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1// Code generated by command: go run gen.go -out ../encodeblock_amd64.s -stubs ../encodeblock_amd64.go -pkg=s2. DO NOT EDIT.
2
3//go:build !appengine && !noasm && gc && !noasm
4
5#include "textflag.h"
6
7// func _dummy_()
8TEXT ·_dummy_(SB), $0
9#ifdef GOAMD64_v4
10#ifndef GOAMD64_v3
11#define GOAMD64_v3
12#endif
13#endif
14 RET
15
16// func encodeBlockAsm(dst []byte, src []byte) int
17// Requires: BMI, SSE2
18TEXT ·encodeBlockAsm(SB), $65560-56
19 MOVQ dst_base+0(FP), AX
20 MOVQ $0x00000200, CX
21 LEAQ 24(SP), DX
22 PXOR X0, X0
23
24zero_loop_encodeBlockAsm:
25 MOVOU X0, (DX)
26 MOVOU X0, 16(DX)
27 MOVOU X0, 32(DX)
28 MOVOU X0, 48(DX)
29 MOVOU X0, 64(DX)
30 MOVOU X0, 80(DX)
31 MOVOU X0, 96(DX)
32 MOVOU X0, 112(DX)
33 ADDQ $0x80, DX
34 DECQ CX
35 JNZ zero_loop_encodeBlockAsm
36 MOVL $0x00000000, 12(SP)
37 MOVQ src_len+32(FP), CX
38 LEAQ -9(CX), DX
39 LEAQ -8(CX), BX
40 MOVL BX, 8(SP)
41 SHRQ $0x05, CX
42 SUBL CX, DX
43 LEAQ (AX)(DX*1), DX
44 MOVQ DX, (SP)
45 MOVL $0x00000001, CX
46 MOVL CX, 16(SP)
47 MOVQ src_base+24(FP), DX
48
49search_loop_encodeBlockAsm:
50 MOVL CX, BX
51 SUBL 12(SP), BX
52 SHRL $0x06, BX
53 LEAL 4(CX)(BX*1), BX
54 CMPL BX, 8(SP)
55 JAE emit_remainder_encodeBlockAsm
56 MOVQ (DX)(CX*1), SI
57 MOVL BX, 20(SP)
58 MOVQ $0x0000cf1bbcdcbf9b, R8
59 MOVQ SI, R9
60 MOVQ SI, R10
61 SHRQ $0x08, R10
62 SHLQ $0x10, R9
63 IMULQ R8, R9
64 SHRQ $0x32, R9
65 SHLQ $0x10, R10
66 IMULQ R8, R10
67 SHRQ $0x32, R10
68 MOVL 24(SP)(R9*4), BX
69 MOVL 24(SP)(R10*4), DI
70 MOVL CX, 24(SP)(R9*4)
71 LEAL 1(CX), R9
72 MOVL R9, 24(SP)(R10*4)
73 MOVQ SI, R9
74 SHRQ $0x10, R9
75 SHLQ $0x10, R9
76 IMULQ R8, R9
77 SHRQ $0x32, R9
78 MOVL CX, R8
79 SUBL 16(SP), R8
80 MOVL 1(DX)(R8*1), R10
81 MOVQ SI, R8
82 SHRQ $0x08, R8
83 CMPL R8, R10
84 JNE no_repeat_found_encodeBlockAsm
85 LEAL 1(CX), SI
86 MOVL 12(SP), DI
87 MOVL SI, BX
88 SUBL 16(SP), BX
89 JZ repeat_extend_back_end_encodeBlockAsm
90
91repeat_extend_back_loop_encodeBlockAsm:
92 CMPL SI, DI
93 JBE repeat_extend_back_end_encodeBlockAsm
94 MOVB -1(DX)(BX*1), R8
95 MOVB -1(DX)(SI*1), R9
96 CMPB R8, R9
97 JNE repeat_extend_back_end_encodeBlockAsm
98 LEAL -1(SI), SI
99 DECL BX
100 JNZ repeat_extend_back_loop_encodeBlockAsm
101
102repeat_extend_back_end_encodeBlockAsm:
103 MOVL 12(SP), BX
104 CMPL BX, SI
105 JEQ emit_literal_done_repeat_emit_encodeBlockAsm
106 MOVL SI, R8
107 MOVL SI, 12(SP)
108 LEAQ (DX)(BX*1), R9
109 SUBL BX, R8
110 LEAL -1(R8), BX
111 CMPL BX, $0x3c
112 JB one_byte_repeat_emit_encodeBlockAsm
113 CMPL BX, $0x00000100
114 JB two_bytes_repeat_emit_encodeBlockAsm
115 CMPL BX, $0x00010000
116 JB three_bytes_repeat_emit_encodeBlockAsm
117 CMPL BX, $0x01000000
118 JB four_bytes_repeat_emit_encodeBlockAsm
119 MOVB $0xfc, (AX)
120 MOVL BX, 1(AX)
121 ADDQ $0x05, AX
122 JMP memmove_long_repeat_emit_encodeBlockAsm
123
124four_bytes_repeat_emit_encodeBlockAsm:
125 MOVL BX, R10
126 SHRL $0x10, R10
127 MOVB $0xf8, (AX)
128 MOVW BX, 1(AX)
129 MOVB R10, 3(AX)
130 ADDQ $0x04, AX
131 JMP memmove_long_repeat_emit_encodeBlockAsm
132
133three_bytes_repeat_emit_encodeBlockAsm:
134 MOVB $0xf4, (AX)
135 MOVW BX, 1(AX)
136 ADDQ $0x03, AX
137 JMP memmove_long_repeat_emit_encodeBlockAsm
138
139two_bytes_repeat_emit_encodeBlockAsm:
140 MOVB $0xf0, (AX)
141 MOVB BL, 1(AX)
142 ADDQ $0x02, AX
143 CMPL BX, $0x40
144 JB memmove_repeat_emit_encodeBlockAsm
145 JMP memmove_long_repeat_emit_encodeBlockAsm
146
147one_byte_repeat_emit_encodeBlockAsm:
148 SHLB $0x02, BL
149 MOVB BL, (AX)
150 ADDQ $0x01, AX
151
152memmove_repeat_emit_encodeBlockAsm:
153 LEAQ (AX)(R8*1), BX
154
155 // genMemMoveShort
156 CMPQ R8, $0x08
157 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_8
158 CMPQ R8, $0x10
159 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_8through16
160 CMPQ R8, $0x20
161 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_17through32
162 JMP emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_33through64
163
164emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_8:
165 MOVQ (R9), R10
166 MOVQ R10, (AX)
167 JMP memmove_end_copy_repeat_emit_encodeBlockAsm
168
169emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_8through16:
170 MOVQ (R9), R10
171 MOVQ -8(R9)(R8*1), R9
172 MOVQ R10, (AX)
173 MOVQ R9, -8(AX)(R8*1)
174 JMP memmove_end_copy_repeat_emit_encodeBlockAsm
175
176emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_17through32:
177 MOVOU (R9), X0
178 MOVOU -16(R9)(R8*1), X1
179 MOVOU X0, (AX)
180 MOVOU X1, -16(AX)(R8*1)
181 JMP memmove_end_copy_repeat_emit_encodeBlockAsm
182
183emit_lit_memmove_repeat_emit_encodeBlockAsm_memmove_move_33through64:
184 MOVOU (R9), X0
185 MOVOU 16(R9), X1
186 MOVOU -32(R9)(R8*1), X2
187 MOVOU -16(R9)(R8*1), X3
188 MOVOU X0, (AX)
189 MOVOU X1, 16(AX)
190 MOVOU X2, -32(AX)(R8*1)
191 MOVOU X3, -16(AX)(R8*1)
192
193memmove_end_copy_repeat_emit_encodeBlockAsm:
194 MOVQ BX, AX
195 JMP emit_literal_done_repeat_emit_encodeBlockAsm
196
197memmove_long_repeat_emit_encodeBlockAsm:
198 LEAQ (AX)(R8*1), BX
199
200 // genMemMoveLong
201 MOVOU (R9), X0
202 MOVOU 16(R9), X1
203 MOVOU -32(R9)(R8*1), X2
204 MOVOU -16(R9)(R8*1), X3
205 MOVQ R8, R11
206 SHRQ $0x05, R11
207 MOVQ AX, R10
208 ANDL $0x0000001f, R10
209 MOVQ $0x00000040, R12
210 SUBQ R10, R12
211 DECQ R11
212 JA emit_lit_memmove_long_repeat_emit_encodeBlockAsmlarge_forward_sse_loop_32
213 LEAQ -32(R9)(R12*1), R10
214 LEAQ -32(AX)(R12*1), R13
215
216emit_lit_memmove_long_repeat_emit_encodeBlockAsmlarge_big_loop_back:
217 MOVOU (R10), X4
218 MOVOU 16(R10), X5
219 MOVOA X4, (R13)
220 MOVOA X5, 16(R13)
221 ADDQ $0x20, R13
222 ADDQ $0x20, R10
223 ADDQ $0x20, R12
224 DECQ R11
225 JNA emit_lit_memmove_long_repeat_emit_encodeBlockAsmlarge_big_loop_back
226
227emit_lit_memmove_long_repeat_emit_encodeBlockAsmlarge_forward_sse_loop_32:
228 MOVOU -32(R9)(R12*1), X4
229 MOVOU -16(R9)(R12*1), X5
230 MOVOA X4, -32(AX)(R12*1)
231 MOVOA X5, -16(AX)(R12*1)
232 ADDQ $0x20, R12
233 CMPQ R8, R12
234 JAE emit_lit_memmove_long_repeat_emit_encodeBlockAsmlarge_forward_sse_loop_32
235 MOVOU X0, (AX)
236 MOVOU X1, 16(AX)
237 MOVOU X2, -32(AX)(R8*1)
238 MOVOU X3, -16(AX)(R8*1)
239 MOVQ BX, AX
240
241emit_literal_done_repeat_emit_encodeBlockAsm:
242 ADDL $0x05, CX
243 MOVL CX, BX
244 SUBL 16(SP), BX
245 MOVQ src_len+32(FP), R8
246 SUBL CX, R8
247 LEAQ (DX)(CX*1), R9
248 LEAQ (DX)(BX*1), BX
249
250 // matchLen
251 XORL R11, R11
252
253matchlen_loopback_16_repeat_extend_encodeBlockAsm:
254 CMPL R8, $0x10
255 JB matchlen_match8_repeat_extend_encodeBlockAsm
256 MOVQ (R9)(R11*1), R10
257 MOVQ 8(R9)(R11*1), R12
258 XORQ (BX)(R11*1), R10
259 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm
260 XORQ 8(BX)(R11*1), R12
261 JNZ matchlen_bsf_16repeat_extend_encodeBlockAsm
262 LEAL -16(R8), R8
263 LEAL 16(R11), R11
264 JMP matchlen_loopback_16_repeat_extend_encodeBlockAsm
265
266matchlen_bsf_16repeat_extend_encodeBlockAsm:
267#ifdef GOAMD64_v3
268 TZCNTQ R12, R12
269
270#else
271 BSFQ R12, R12
272
273#endif
274 SARQ $0x03, R12
275 LEAL 8(R11)(R12*1), R11
276 JMP repeat_extend_forward_end_encodeBlockAsm
277
278matchlen_match8_repeat_extend_encodeBlockAsm:
279 CMPL R8, $0x08
280 JB matchlen_match4_repeat_extend_encodeBlockAsm
281 MOVQ (R9)(R11*1), R10
282 XORQ (BX)(R11*1), R10
283 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm
284 LEAL -8(R8), R8
285 LEAL 8(R11), R11
286 JMP matchlen_match4_repeat_extend_encodeBlockAsm
287
288matchlen_bsf_8_repeat_extend_encodeBlockAsm:
289#ifdef GOAMD64_v3
290 TZCNTQ R10, R10
291
292#else
293 BSFQ R10, R10
294
295#endif
296 SARQ $0x03, R10
297 LEAL (R11)(R10*1), R11
298 JMP repeat_extend_forward_end_encodeBlockAsm
299
300matchlen_match4_repeat_extend_encodeBlockAsm:
301 CMPL R8, $0x04
302 JB matchlen_match2_repeat_extend_encodeBlockAsm
303 MOVL (R9)(R11*1), R10
304 CMPL (BX)(R11*1), R10
305 JNE matchlen_match2_repeat_extend_encodeBlockAsm
306 LEAL -4(R8), R8
307 LEAL 4(R11), R11
308
309matchlen_match2_repeat_extend_encodeBlockAsm:
310 CMPL R8, $0x01
311 JE matchlen_match1_repeat_extend_encodeBlockAsm
312 JB repeat_extend_forward_end_encodeBlockAsm
313 MOVW (R9)(R11*1), R10
314 CMPW (BX)(R11*1), R10
315 JNE matchlen_match1_repeat_extend_encodeBlockAsm
316 LEAL 2(R11), R11
317 SUBL $0x02, R8
318 JZ repeat_extend_forward_end_encodeBlockAsm
319
320matchlen_match1_repeat_extend_encodeBlockAsm:
321 MOVB (R9)(R11*1), R10
322 CMPB (BX)(R11*1), R10
323 JNE repeat_extend_forward_end_encodeBlockAsm
324 LEAL 1(R11), R11
325
326repeat_extend_forward_end_encodeBlockAsm:
327 ADDL R11, CX
328 MOVL CX, BX
329 SUBL SI, BX
330 MOVL 16(SP), SI
331 TESTL DI, DI
332 JZ repeat_as_copy_encodeBlockAsm
333
334 // emitRepeat
335emit_repeat_again_match_repeat_encodeBlockAsm:
336 MOVL BX, DI
337 LEAL -4(BX), BX
338 CMPL DI, $0x08
339 JBE repeat_two_match_repeat_encodeBlockAsm
340 CMPL DI, $0x0c
341 JAE cant_repeat_two_offset_match_repeat_encodeBlockAsm
342 CMPL SI, $0x00000800
343 JB repeat_two_offset_match_repeat_encodeBlockAsm
344
345cant_repeat_two_offset_match_repeat_encodeBlockAsm:
346 CMPL BX, $0x00000104
347 JB repeat_three_match_repeat_encodeBlockAsm
348 CMPL BX, $0x00010100
349 JB repeat_four_match_repeat_encodeBlockAsm
350 CMPL BX, $0x0100ffff
351 JB repeat_five_match_repeat_encodeBlockAsm
352 LEAL -16842747(BX), BX
353 MOVL $0xfffb001d, (AX)
354 MOVB $0xff, 4(AX)
355 ADDQ $0x05, AX
356 JMP emit_repeat_again_match_repeat_encodeBlockAsm
357
358repeat_five_match_repeat_encodeBlockAsm:
359 LEAL -65536(BX), BX
360 MOVL BX, SI
361 MOVW $0x001d, (AX)
362 MOVW BX, 2(AX)
363 SARL $0x10, SI
364 MOVB SI, 4(AX)
365 ADDQ $0x05, AX
366 JMP repeat_end_emit_encodeBlockAsm
367
368repeat_four_match_repeat_encodeBlockAsm:
369 LEAL -256(BX), BX
370 MOVW $0x0019, (AX)
371 MOVW BX, 2(AX)
372 ADDQ $0x04, AX
373 JMP repeat_end_emit_encodeBlockAsm
374
375repeat_three_match_repeat_encodeBlockAsm:
376 LEAL -4(BX), BX
377 MOVW $0x0015, (AX)
378 MOVB BL, 2(AX)
379 ADDQ $0x03, AX
380 JMP repeat_end_emit_encodeBlockAsm
381
382repeat_two_match_repeat_encodeBlockAsm:
383 SHLL $0x02, BX
384 ORL $0x01, BX
385 MOVW BX, (AX)
386 ADDQ $0x02, AX
387 JMP repeat_end_emit_encodeBlockAsm
388
389repeat_two_offset_match_repeat_encodeBlockAsm:
390 XORQ DI, DI
391 LEAL 1(DI)(BX*4), BX
392 MOVB SI, 1(AX)
393 SARL $0x08, SI
394 SHLL $0x05, SI
395 ORL SI, BX
396 MOVB BL, (AX)
397 ADDQ $0x02, AX
398 JMP repeat_end_emit_encodeBlockAsm
399
400repeat_as_copy_encodeBlockAsm:
401 // emitCopy
402 CMPL SI, $0x00010000
403 JB two_byte_offset_repeat_as_copy_encodeBlockAsm
404 CMPL BX, $0x40
405 JBE four_bytes_remain_repeat_as_copy_encodeBlockAsm
406 MOVB $0xff, (AX)
407 MOVL SI, 1(AX)
408 LEAL -64(BX), BX
409 ADDQ $0x05, AX
410 CMPL BX, $0x04
411 JB four_bytes_remain_repeat_as_copy_encodeBlockAsm
412
413 // emitRepeat
414emit_repeat_again_repeat_as_copy_encodeBlockAsm_emit_copy:
415 MOVL BX, DI
416 LEAL -4(BX), BX
417 CMPL DI, $0x08
418 JBE repeat_two_repeat_as_copy_encodeBlockAsm_emit_copy
419 CMPL DI, $0x0c
420 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy
421 CMPL SI, $0x00000800
422 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy
423
424cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy:
425 CMPL BX, $0x00000104
426 JB repeat_three_repeat_as_copy_encodeBlockAsm_emit_copy
427 CMPL BX, $0x00010100
428 JB repeat_four_repeat_as_copy_encodeBlockAsm_emit_copy
429 CMPL BX, $0x0100ffff
430 JB repeat_five_repeat_as_copy_encodeBlockAsm_emit_copy
431 LEAL -16842747(BX), BX
432 MOVL $0xfffb001d, (AX)
433 MOVB $0xff, 4(AX)
434 ADDQ $0x05, AX
435 JMP emit_repeat_again_repeat_as_copy_encodeBlockAsm_emit_copy
436
437repeat_five_repeat_as_copy_encodeBlockAsm_emit_copy:
438 LEAL -65536(BX), BX
439 MOVL BX, SI
440 MOVW $0x001d, (AX)
441 MOVW BX, 2(AX)
442 SARL $0x10, SI
443 MOVB SI, 4(AX)
444 ADDQ $0x05, AX
445 JMP repeat_end_emit_encodeBlockAsm
446
447repeat_four_repeat_as_copy_encodeBlockAsm_emit_copy:
448 LEAL -256(BX), BX
449 MOVW $0x0019, (AX)
450 MOVW BX, 2(AX)
451 ADDQ $0x04, AX
452 JMP repeat_end_emit_encodeBlockAsm
453
454repeat_three_repeat_as_copy_encodeBlockAsm_emit_copy:
455 LEAL -4(BX), BX
456 MOVW $0x0015, (AX)
457 MOVB BL, 2(AX)
458 ADDQ $0x03, AX
459 JMP repeat_end_emit_encodeBlockAsm
460
461repeat_two_repeat_as_copy_encodeBlockAsm_emit_copy:
462 SHLL $0x02, BX
463 ORL $0x01, BX
464 MOVW BX, (AX)
465 ADDQ $0x02, AX
466 JMP repeat_end_emit_encodeBlockAsm
467
468repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy:
469 XORQ DI, DI
470 LEAL 1(DI)(BX*4), BX
471 MOVB SI, 1(AX)
472 SARL $0x08, SI
473 SHLL $0x05, SI
474 ORL SI, BX
475 MOVB BL, (AX)
476 ADDQ $0x02, AX
477 JMP repeat_end_emit_encodeBlockAsm
478
479four_bytes_remain_repeat_as_copy_encodeBlockAsm:
480 TESTL BX, BX
481 JZ repeat_end_emit_encodeBlockAsm
482 XORL DI, DI
483 LEAL -1(DI)(BX*4), BX
484 MOVB BL, (AX)
485 MOVL SI, 1(AX)
486 ADDQ $0x05, AX
487 JMP repeat_end_emit_encodeBlockAsm
488
489two_byte_offset_repeat_as_copy_encodeBlockAsm:
490 CMPL BX, $0x40
491 JBE two_byte_offset_short_repeat_as_copy_encodeBlockAsm
492 CMPL SI, $0x00000800
493 JAE long_offset_short_repeat_as_copy_encodeBlockAsm
494 MOVL $0x00000001, DI
495 LEAL 16(DI), DI
496 MOVB SI, 1(AX)
497 MOVL SI, R8
498 SHRL $0x08, R8
499 SHLL $0x05, R8
500 ORL R8, DI
501 MOVB DI, (AX)
502 ADDQ $0x02, AX
503 SUBL $0x08, BX
504
505 // emitRepeat
506 LEAL -4(BX), BX
507 JMP cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
508
509emit_repeat_again_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b:
510 MOVL BX, DI
511 LEAL -4(BX), BX
512 CMPL DI, $0x08
513 JBE repeat_two_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
514 CMPL DI, $0x0c
515 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
516 CMPL SI, $0x00000800
517 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
518
519cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b:
520 CMPL BX, $0x00000104
521 JB repeat_three_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
522 CMPL BX, $0x00010100
523 JB repeat_four_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
524 CMPL BX, $0x0100ffff
525 JB repeat_five_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
526 LEAL -16842747(BX), BX
527 MOVL $0xfffb001d, (AX)
528 MOVB $0xff, 4(AX)
529 ADDQ $0x05, AX
530 JMP emit_repeat_again_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b
531
532repeat_five_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b:
533 LEAL -65536(BX), BX
534 MOVL BX, SI
535 MOVW $0x001d, (AX)
536 MOVW BX, 2(AX)
537 SARL $0x10, SI
538 MOVB SI, 4(AX)
539 ADDQ $0x05, AX
540 JMP repeat_end_emit_encodeBlockAsm
541
542repeat_four_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b:
543 LEAL -256(BX), BX
544 MOVW $0x0019, (AX)
545 MOVW BX, 2(AX)
546 ADDQ $0x04, AX
547 JMP repeat_end_emit_encodeBlockAsm
548
549repeat_three_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b:
550 LEAL -4(BX), BX
551 MOVW $0x0015, (AX)
552 MOVB BL, 2(AX)
553 ADDQ $0x03, AX
554 JMP repeat_end_emit_encodeBlockAsm
555
556repeat_two_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b:
557 SHLL $0x02, BX
558 ORL $0x01, BX
559 MOVW BX, (AX)
560 ADDQ $0x02, AX
561 JMP repeat_end_emit_encodeBlockAsm
562
563repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short_2b:
564 XORQ DI, DI
565 LEAL 1(DI)(BX*4), BX
566 MOVB SI, 1(AX)
567 SARL $0x08, SI
568 SHLL $0x05, SI
569 ORL SI, BX
570 MOVB BL, (AX)
571 ADDQ $0x02, AX
572 JMP repeat_end_emit_encodeBlockAsm
573
574long_offset_short_repeat_as_copy_encodeBlockAsm:
575 MOVB $0xee, (AX)
576 MOVW SI, 1(AX)
577 LEAL -60(BX), BX
578 ADDQ $0x03, AX
579
580 // emitRepeat
581emit_repeat_again_repeat_as_copy_encodeBlockAsm_emit_copy_short:
582 MOVL BX, DI
583 LEAL -4(BX), BX
584 CMPL DI, $0x08
585 JBE repeat_two_repeat_as_copy_encodeBlockAsm_emit_copy_short
586 CMPL DI, $0x0c
587 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short
588 CMPL SI, $0x00000800
589 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short
590
591cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short:
592 CMPL BX, $0x00000104
593 JB repeat_three_repeat_as_copy_encodeBlockAsm_emit_copy_short
594 CMPL BX, $0x00010100
595 JB repeat_four_repeat_as_copy_encodeBlockAsm_emit_copy_short
596 CMPL BX, $0x0100ffff
597 JB repeat_five_repeat_as_copy_encodeBlockAsm_emit_copy_short
598 LEAL -16842747(BX), BX
599 MOVL $0xfffb001d, (AX)
600 MOVB $0xff, 4(AX)
601 ADDQ $0x05, AX
602 JMP emit_repeat_again_repeat_as_copy_encodeBlockAsm_emit_copy_short
603
604repeat_five_repeat_as_copy_encodeBlockAsm_emit_copy_short:
605 LEAL -65536(BX), BX
606 MOVL BX, SI
607 MOVW $0x001d, (AX)
608 MOVW BX, 2(AX)
609 SARL $0x10, SI
610 MOVB SI, 4(AX)
611 ADDQ $0x05, AX
612 JMP repeat_end_emit_encodeBlockAsm
613
614repeat_four_repeat_as_copy_encodeBlockAsm_emit_copy_short:
615 LEAL -256(BX), BX
616 MOVW $0x0019, (AX)
617 MOVW BX, 2(AX)
618 ADDQ $0x04, AX
619 JMP repeat_end_emit_encodeBlockAsm
620
621repeat_three_repeat_as_copy_encodeBlockAsm_emit_copy_short:
622 LEAL -4(BX), BX
623 MOVW $0x0015, (AX)
624 MOVB BL, 2(AX)
625 ADDQ $0x03, AX
626 JMP repeat_end_emit_encodeBlockAsm
627
628repeat_two_repeat_as_copy_encodeBlockAsm_emit_copy_short:
629 SHLL $0x02, BX
630 ORL $0x01, BX
631 MOVW BX, (AX)
632 ADDQ $0x02, AX
633 JMP repeat_end_emit_encodeBlockAsm
634
635repeat_two_offset_repeat_as_copy_encodeBlockAsm_emit_copy_short:
636 XORQ DI, DI
637 LEAL 1(DI)(BX*4), BX
638 MOVB SI, 1(AX)
639 SARL $0x08, SI
640 SHLL $0x05, SI
641 ORL SI, BX
642 MOVB BL, (AX)
643 ADDQ $0x02, AX
644 JMP repeat_end_emit_encodeBlockAsm
645
646two_byte_offset_short_repeat_as_copy_encodeBlockAsm:
647 MOVL BX, DI
648 SHLL $0x02, DI
649 CMPL BX, $0x0c
650 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm
651 CMPL SI, $0x00000800
652 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm
653 LEAL -15(DI), DI
654 MOVB SI, 1(AX)
655 SHRL $0x08, SI
656 SHLL $0x05, SI
657 ORL SI, DI
658 MOVB DI, (AX)
659 ADDQ $0x02, AX
660 JMP repeat_end_emit_encodeBlockAsm
661
662emit_copy_three_repeat_as_copy_encodeBlockAsm:
663 LEAL -2(DI), DI
664 MOVB DI, (AX)
665 MOVW SI, 1(AX)
666 ADDQ $0x03, AX
667
668repeat_end_emit_encodeBlockAsm:
669 MOVL CX, 12(SP)
670 JMP search_loop_encodeBlockAsm
671
672no_repeat_found_encodeBlockAsm:
673 CMPL (DX)(BX*1), SI
674 JEQ candidate_match_encodeBlockAsm
675 SHRQ $0x08, SI
676 MOVL 24(SP)(R9*4), BX
677 LEAL 2(CX), R8
678 CMPL (DX)(DI*1), SI
679 JEQ candidate2_match_encodeBlockAsm
680 MOVL R8, 24(SP)(R9*4)
681 SHRQ $0x08, SI
682 CMPL (DX)(BX*1), SI
683 JEQ candidate3_match_encodeBlockAsm
684 MOVL 20(SP), CX
685 JMP search_loop_encodeBlockAsm
686
687candidate3_match_encodeBlockAsm:
688 ADDL $0x02, CX
689 JMP candidate_match_encodeBlockAsm
690
691candidate2_match_encodeBlockAsm:
692 MOVL R8, 24(SP)(R9*4)
693 INCL CX
694 MOVL DI, BX
695
696candidate_match_encodeBlockAsm:
697 MOVL 12(SP), SI
698 TESTL BX, BX
699 JZ match_extend_back_end_encodeBlockAsm
700
701match_extend_back_loop_encodeBlockAsm:
702 CMPL CX, SI
703 JBE match_extend_back_end_encodeBlockAsm
704 MOVB -1(DX)(BX*1), DI
705 MOVB -1(DX)(CX*1), R8
706 CMPB DI, R8
707 JNE match_extend_back_end_encodeBlockAsm
708 LEAL -1(CX), CX
709 DECL BX
710 JZ match_extend_back_end_encodeBlockAsm
711 JMP match_extend_back_loop_encodeBlockAsm
712
713match_extend_back_end_encodeBlockAsm:
714 MOVL CX, SI
715 SUBL 12(SP), SI
716 LEAQ 5(AX)(SI*1), SI
717 CMPQ SI, (SP)
718 JB match_dst_size_check_encodeBlockAsm
719 MOVQ $0x00000000, ret+48(FP)
720 RET
721
722match_dst_size_check_encodeBlockAsm:
723 MOVL CX, SI
724 MOVL 12(SP), DI
725 CMPL DI, SI
726 JEQ emit_literal_done_match_emit_encodeBlockAsm
727 MOVL SI, R8
728 MOVL SI, 12(SP)
729 LEAQ (DX)(DI*1), SI
730 SUBL DI, R8
731 LEAL -1(R8), DI
732 CMPL DI, $0x3c
733 JB one_byte_match_emit_encodeBlockAsm
734 CMPL DI, $0x00000100
735 JB two_bytes_match_emit_encodeBlockAsm
736 CMPL DI, $0x00010000
737 JB three_bytes_match_emit_encodeBlockAsm
738 CMPL DI, $0x01000000
739 JB four_bytes_match_emit_encodeBlockAsm
740 MOVB $0xfc, (AX)
741 MOVL DI, 1(AX)
742 ADDQ $0x05, AX
743 JMP memmove_long_match_emit_encodeBlockAsm
744
745four_bytes_match_emit_encodeBlockAsm:
746 MOVL DI, R9
747 SHRL $0x10, R9
748 MOVB $0xf8, (AX)
749 MOVW DI, 1(AX)
750 MOVB R9, 3(AX)
751 ADDQ $0x04, AX
752 JMP memmove_long_match_emit_encodeBlockAsm
753
754three_bytes_match_emit_encodeBlockAsm:
755 MOVB $0xf4, (AX)
756 MOVW DI, 1(AX)
757 ADDQ $0x03, AX
758 JMP memmove_long_match_emit_encodeBlockAsm
759
760two_bytes_match_emit_encodeBlockAsm:
761 MOVB $0xf0, (AX)
762 MOVB DI, 1(AX)
763 ADDQ $0x02, AX
764 CMPL DI, $0x40
765 JB memmove_match_emit_encodeBlockAsm
766 JMP memmove_long_match_emit_encodeBlockAsm
767
768one_byte_match_emit_encodeBlockAsm:
769 SHLB $0x02, DI
770 MOVB DI, (AX)
771 ADDQ $0x01, AX
772
773memmove_match_emit_encodeBlockAsm:
774 LEAQ (AX)(R8*1), DI
775
776 // genMemMoveShort
777 CMPQ R8, $0x08
778 JBE emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_8
779 CMPQ R8, $0x10
780 JBE emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_8through16
781 CMPQ R8, $0x20
782 JBE emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_17through32
783 JMP emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_33through64
784
785emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_8:
786 MOVQ (SI), R9
787 MOVQ R9, (AX)
788 JMP memmove_end_copy_match_emit_encodeBlockAsm
789
790emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_8through16:
791 MOVQ (SI), R9
792 MOVQ -8(SI)(R8*1), SI
793 MOVQ R9, (AX)
794 MOVQ SI, -8(AX)(R8*1)
795 JMP memmove_end_copy_match_emit_encodeBlockAsm
796
797emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_17through32:
798 MOVOU (SI), X0
799 MOVOU -16(SI)(R8*1), X1
800 MOVOU X0, (AX)
801 MOVOU X1, -16(AX)(R8*1)
802 JMP memmove_end_copy_match_emit_encodeBlockAsm
803
804emit_lit_memmove_match_emit_encodeBlockAsm_memmove_move_33through64:
805 MOVOU (SI), X0
806 MOVOU 16(SI), X1
807 MOVOU -32(SI)(R8*1), X2
808 MOVOU -16(SI)(R8*1), X3
809 MOVOU X0, (AX)
810 MOVOU X1, 16(AX)
811 MOVOU X2, -32(AX)(R8*1)
812 MOVOU X3, -16(AX)(R8*1)
813
814memmove_end_copy_match_emit_encodeBlockAsm:
815 MOVQ DI, AX
816 JMP emit_literal_done_match_emit_encodeBlockAsm
817
818memmove_long_match_emit_encodeBlockAsm:
819 LEAQ (AX)(R8*1), DI
820
821 // genMemMoveLong
822 MOVOU (SI), X0
823 MOVOU 16(SI), X1
824 MOVOU -32(SI)(R8*1), X2
825 MOVOU -16(SI)(R8*1), X3
826 MOVQ R8, R10
827 SHRQ $0x05, R10
828 MOVQ AX, R9
829 ANDL $0x0000001f, R9
830 MOVQ $0x00000040, R11
831 SUBQ R9, R11
832 DECQ R10
833 JA emit_lit_memmove_long_match_emit_encodeBlockAsmlarge_forward_sse_loop_32
834 LEAQ -32(SI)(R11*1), R9
835 LEAQ -32(AX)(R11*1), R12
836
837emit_lit_memmove_long_match_emit_encodeBlockAsmlarge_big_loop_back:
838 MOVOU (R9), X4
839 MOVOU 16(R9), X5
840 MOVOA X4, (R12)
841 MOVOA X5, 16(R12)
842 ADDQ $0x20, R12
843 ADDQ $0x20, R9
844 ADDQ $0x20, R11
845 DECQ R10
846 JNA emit_lit_memmove_long_match_emit_encodeBlockAsmlarge_big_loop_back
847
848emit_lit_memmove_long_match_emit_encodeBlockAsmlarge_forward_sse_loop_32:
849 MOVOU -32(SI)(R11*1), X4
850 MOVOU -16(SI)(R11*1), X5
851 MOVOA X4, -32(AX)(R11*1)
852 MOVOA X5, -16(AX)(R11*1)
853 ADDQ $0x20, R11
854 CMPQ R8, R11
855 JAE emit_lit_memmove_long_match_emit_encodeBlockAsmlarge_forward_sse_loop_32
856 MOVOU X0, (AX)
857 MOVOU X1, 16(AX)
858 MOVOU X2, -32(AX)(R8*1)
859 MOVOU X3, -16(AX)(R8*1)
860 MOVQ DI, AX
861
862emit_literal_done_match_emit_encodeBlockAsm:
863match_nolit_loop_encodeBlockAsm:
864 MOVL CX, SI
865 SUBL BX, SI
866 MOVL SI, 16(SP)
867 ADDL $0x04, CX
868 ADDL $0x04, BX
869 MOVQ src_len+32(FP), SI
870 SUBL CX, SI
871 LEAQ (DX)(CX*1), DI
872 LEAQ (DX)(BX*1), BX
873
874 // matchLen
875 XORL R9, R9
876
877matchlen_loopback_16_match_nolit_encodeBlockAsm:
878 CMPL SI, $0x10
879 JB matchlen_match8_match_nolit_encodeBlockAsm
880 MOVQ (DI)(R9*1), R8
881 MOVQ 8(DI)(R9*1), R10
882 XORQ (BX)(R9*1), R8
883 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm
884 XORQ 8(BX)(R9*1), R10
885 JNZ matchlen_bsf_16match_nolit_encodeBlockAsm
886 LEAL -16(SI), SI
887 LEAL 16(R9), R9
888 JMP matchlen_loopback_16_match_nolit_encodeBlockAsm
889
890matchlen_bsf_16match_nolit_encodeBlockAsm:
891#ifdef GOAMD64_v3
892 TZCNTQ R10, R10
893
894#else
895 BSFQ R10, R10
896
897#endif
898 SARQ $0x03, R10
899 LEAL 8(R9)(R10*1), R9
900 JMP match_nolit_end_encodeBlockAsm
901
902matchlen_match8_match_nolit_encodeBlockAsm:
903 CMPL SI, $0x08
904 JB matchlen_match4_match_nolit_encodeBlockAsm
905 MOVQ (DI)(R9*1), R8
906 XORQ (BX)(R9*1), R8
907 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm
908 LEAL -8(SI), SI
909 LEAL 8(R9), R9
910 JMP matchlen_match4_match_nolit_encodeBlockAsm
911
912matchlen_bsf_8_match_nolit_encodeBlockAsm:
913#ifdef GOAMD64_v3
914 TZCNTQ R8, R8
915
916#else
917 BSFQ R8, R8
918
919#endif
920 SARQ $0x03, R8
921 LEAL (R9)(R8*1), R9
922 JMP match_nolit_end_encodeBlockAsm
923
924matchlen_match4_match_nolit_encodeBlockAsm:
925 CMPL SI, $0x04
926 JB matchlen_match2_match_nolit_encodeBlockAsm
927 MOVL (DI)(R9*1), R8
928 CMPL (BX)(R9*1), R8
929 JNE matchlen_match2_match_nolit_encodeBlockAsm
930 LEAL -4(SI), SI
931 LEAL 4(R9), R9
932
933matchlen_match2_match_nolit_encodeBlockAsm:
934 CMPL SI, $0x01
935 JE matchlen_match1_match_nolit_encodeBlockAsm
936 JB match_nolit_end_encodeBlockAsm
937 MOVW (DI)(R9*1), R8
938 CMPW (BX)(R9*1), R8
939 JNE matchlen_match1_match_nolit_encodeBlockAsm
940 LEAL 2(R9), R9
941 SUBL $0x02, SI
942 JZ match_nolit_end_encodeBlockAsm
943
944matchlen_match1_match_nolit_encodeBlockAsm:
945 MOVB (DI)(R9*1), R8
946 CMPB (BX)(R9*1), R8
947 JNE match_nolit_end_encodeBlockAsm
948 LEAL 1(R9), R9
949
950match_nolit_end_encodeBlockAsm:
951 ADDL R9, CX
952 MOVL 16(SP), BX
953 ADDL $0x04, R9
954 MOVL CX, 12(SP)
955
956 // emitCopy
957 CMPL BX, $0x00010000
958 JB two_byte_offset_match_nolit_encodeBlockAsm
959 CMPL R9, $0x40
960 JBE four_bytes_remain_match_nolit_encodeBlockAsm
961 MOVB $0xff, (AX)
962 MOVL BX, 1(AX)
963 LEAL -64(R9), R9
964 ADDQ $0x05, AX
965 CMPL R9, $0x04
966 JB four_bytes_remain_match_nolit_encodeBlockAsm
967
968 // emitRepeat
969emit_repeat_again_match_nolit_encodeBlockAsm_emit_copy:
970 MOVL R9, SI
971 LEAL -4(R9), R9
972 CMPL SI, $0x08
973 JBE repeat_two_match_nolit_encodeBlockAsm_emit_copy
974 CMPL SI, $0x0c
975 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy
976 CMPL BX, $0x00000800
977 JB repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy
978
979cant_repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy:
980 CMPL R9, $0x00000104
981 JB repeat_three_match_nolit_encodeBlockAsm_emit_copy
982 CMPL R9, $0x00010100
983 JB repeat_four_match_nolit_encodeBlockAsm_emit_copy
984 CMPL R9, $0x0100ffff
985 JB repeat_five_match_nolit_encodeBlockAsm_emit_copy
986 LEAL -16842747(R9), R9
987 MOVL $0xfffb001d, (AX)
988 MOVB $0xff, 4(AX)
989 ADDQ $0x05, AX
990 JMP emit_repeat_again_match_nolit_encodeBlockAsm_emit_copy
991
992repeat_five_match_nolit_encodeBlockAsm_emit_copy:
993 LEAL -65536(R9), R9
994 MOVL R9, BX
995 MOVW $0x001d, (AX)
996 MOVW R9, 2(AX)
997 SARL $0x10, BX
998 MOVB BL, 4(AX)
999 ADDQ $0x05, AX
1000 JMP match_nolit_emitcopy_end_encodeBlockAsm
1001
1002repeat_four_match_nolit_encodeBlockAsm_emit_copy:
1003 LEAL -256(R9), R9
1004 MOVW $0x0019, (AX)
1005 MOVW R9, 2(AX)
1006 ADDQ $0x04, AX
1007 JMP match_nolit_emitcopy_end_encodeBlockAsm
1008
1009repeat_three_match_nolit_encodeBlockAsm_emit_copy:
1010 LEAL -4(R9), R9
1011 MOVW $0x0015, (AX)
1012 MOVB R9, 2(AX)
1013 ADDQ $0x03, AX
1014 JMP match_nolit_emitcopy_end_encodeBlockAsm
1015
1016repeat_two_match_nolit_encodeBlockAsm_emit_copy:
1017 SHLL $0x02, R9
1018 ORL $0x01, R9
1019 MOVW R9, (AX)
1020 ADDQ $0x02, AX
1021 JMP match_nolit_emitcopy_end_encodeBlockAsm
1022
1023repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy:
1024 XORQ SI, SI
1025 LEAL 1(SI)(R9*4), R9
1026 MOVB BL, 1(AX)
1027 SARL $0x08, BX
1028 SHLL $0x05, BX
1029 ORL BX, R9
1030 MOVB R9, (AX)
1031 ADDQ $0x02, AX
1032 JMP match_nolit_emitcopy_end_encodeBlockAsm
1033
1034four_bytes_remain_match_nolit_encodeBlockAsm:
1035 TESTL R9, R9
1036 JZ match_nolit_emitcopy_end_encodeBlockAsm
1037 XORL SI, SI
1038 LEAL -1(SI)(R9*4), R9
1039 MOVB R9, (AX)
1040 MOVL BX, 1(AX)
1041 ADDQ $0x05, AX
1042 JMP match_nolit_emitcopy_end_encodeBlockAsm
1043
1044two_byte_offset_match_nolit_encodeBlockAsm:
1045 CMPL R9, $0x40
1046 JBE two_byte_offset_short_match_nolit_encodeBlockAsm
1047 CMPL BX, $0x00000800
1048 JAE long_offset_short_match_nolit_encodeBlockAsm
1049 MOVL $0x00000001, SI
1050 LEAL 16(SI), SI
1051 MOVB BL, 1(AX)
1052 MOVL BX, DI
1053 SHRL $0x08, DI
1054 SHLL $0x05, DI
1055 ORL DI, SI
1056 MOVB SI, (AX)
1057 ADDQ $0x02, AX
1058 SUBL $0x08, R9
1059
1060 // emitRepeat
1061 LEAL -4(R9), R9
1062 JMP cant_repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short_2b
1063
1064emit_repeat_again_match_nolit_encodeBlockAsm_emit_copy_short_2b:
1065 MOVL R9, SI
1066 LEAL -4(R9), R9
1067 CMPL SI, $0x08
1068 JBE repeat_two_match_nolit_encodeBlockAsm_emit_copy_short_2b
1069 CMPL SI, $0x0c
1070 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short_2b
1071 CMPL BX, $0x00000800
1072 JB repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short_2b
1073
1074cant_repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short_2b:
1075 CMPL R9, $0x00000104
1076 JB repeat_three_match_nolit_encodeBlockAsm_emit_copy_short_2b
1077 CMPL R9, $0x00010100
1078 JB repeat_four_match_nolit_encodeBlockAsm_emit_copy_short_2b
1079 CMPL R9, $0x0100ffff
1080 JB repeat_five_match_nolit_encodeBlockAsm_emit_copy_short_2b
1081 LEAL -16842747(R9), R9
1082 MOVL $0xfffb001d, (AX)
1083 MOVB $0xff, 4(AX)
1084 ADDQ $0x05, AX
1085 JMP emit_repeat_again_match_nolit_encodeBlockAsm_emit_copy_short_2b
1086
1087repeat_five_match_nolit_encodeBlockAsm_emit_copy_short_2b:
1088 LEAL -65536(R9), R9
1089 MOVL R9, BX
1090 MOVW $0x001d, (AX)
1091 MOVW R9, 2(AX)
1092 SARL $0x10, BX
1093 MOVB BL, 4(AX)
1094 ADDQ $0x05, AX
1095 JMP match_nolit_emitcopy_end_encodeBlockAsm
1096
1097repeat_four_match_nolit_encodeBlockAsm_emit_copy_short_2b:
1098 LEAL -256(R9), R9
1099 MOVW $0x0019, (AX)
1100 MOVW R9, 2(AX)
1101 ADDQ $0x04, AX
1102 JMP match_nolit_emitcopy_end_encodeBlockAsm
1103
1104repeat_three_match_nolit_encodeBlockAsm_emit_copy_short_2b:
1105 LEAL -4(R9), R9
1106 MOVW $0x0015, (AX)
1107 MOVB R9, 2(AX)
1108 ADDQ $0x03, AX
1109 JMP match_nolit_emitcopy_end_encodeBlockAsm
1110
1111repeat_two_match_nolit_encodeBlockAsm_emit_copy_short_2b:
1112 SHLL $0x02, R9
1113 ORL $0x01, R9
1114 MOVW R9, (AX)
1115 ADDQ $0x02, AX
1116 JMP match_nolit_emitcopy_end_encodeBlockAsm
1117
1118repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short_2b:
1119 XORQ SI, SI
1120 LEAL 1(SI)(R9*4), R9
1121 MOVB BL, 1(AX)
1122 SARL $0x08, BX
1123 SHLL $0x05, BX
1124 ORL BX, R9
1125 MOVB R9, (AX)
1126 ADDQ $0x02, AX
1127 JMP match_nolit_emitcopy_end_encodeBlockAsm
1128
1129long_offset_short_match_nolit_encodeBlockAsm:
1130 MOVB $0xee, (AX)
1131 MOVW BX, 1(AX)
1132 LEAL -60(R9), R9
1133 ADDQ $0x03, AX
1134
1135 // emitRepeat
1136emit_repeat_again_match_nolit_encodeBlockAsm_emit_copy_short:
1137 MOVL R9, SI
1138 LEAL -4(R9), R9
1139 CMPL SI, $0x08
1140 JBE repeat_two_match_nolit_encodeBlockAsm_emit_copy_short
1141 CMPL SI, $0x0c
1142 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short
1143 CMPL BX, $0x00000800
1144 JB repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short
1145
1146cant_repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short:
1147 CMPL R9, $0x00000104
1148 JB repeat_three_match_nolit_encodeBlockAsm_emit_copy_short
1149 CMPL R9, $0x00010100
1150 JB repeat_four_match_nolit_encodeBlockAsm_emit_copy_short
1151 CMPL R9, $0x0100ffff
1152 JB repeat_five_match_nolit_encodeBlockAsm_emit_copy_short
1153 LEAL -16842747(R9), R9
1154 MOVL $0xfffb001d, (AX)
1155 MOVB $0xff, 4(AX)
1156 ADDQ $0x05, AX
1157 JMP emit_repeat_again_match_nolit_encodeBlockAsm_emit_copy_short
1158
1159repeat_five_match_nolit_encodeBlockAsm_emit_copy_short:
1160 LEAL -65536(R9), R9
1161 MOVL R9, BX
1162 MOVW $0x001d, (AX)
1163 MOVW R9, 2(AX)
1164 SARL $0x10, BX
1165 MOVB BL, 4(AX)
1166 ADDQ $0x05, AX
1167 JMP match_nolit_emitcopy_end_encodeBlockAsm
1168
1169repeat_four_match_nolit_encodeBlockAsm_emit_copy_short:
1170 LEAL -256(R9), R9
1171 MOVW $0x0019, (AX)
1172 MOVW R9, 2(AX)
1173 ADDQ $0x04, AX
1174 JMP match_nolit_emitcopy_end_encodeBlockAsm
1175
1176repeat_three_match_nolit_encodeBlockAsm_emit_copy_short:
1177 LEAL -4(R9), R9
1178 MOVW $0x0015, (AX)
1179 MOVB R9, 2(AX)
1180 ADDQ $0x03, AX
1181 JMP match_nolit_emitcopy_end_encodeBlockAsm
1182
1183repeat_two_match_nolit_encodeBlockAsm_emit_copy_short:
1184 SHLL $0x02, R9
1185 ORL $0x01, R9
1186 MOVW R9, (AX)
1187 ADDQ $0x02, AX
1188 JMP match_nolit_emitcopy_end_encodeBlockAsm
1189
1190repeat_two_offset_match_nolit_encodeBlockAsm_emit_copy_short:
1191 XORQ SI, SI
1192 LEAL 1(SI)(R9*4), R9
1193 MOVB BL, 1(AX)
1194 SARL $0x08, BX
1195 SHLL $0x05, BX
1196 ORL BX, R9
1197 MOVB R9, (AX)
1198 ADDQ $0x02, AX
1199 JMP match_nolit_emitcopy_end_encodeBlockAsm
1200
1201two_byte_offset_short_match_nolit_encodeBlockAsm:
1202 MOVL R9, SI
1203 SHLL $0x02, SI
1204 CMPL R9, $0x0c
1205 JAE emit_copy_three_match_nolit_encodeBlockAsm
1206 CMPL BX, $0x00000800
1207 JAE emit_copy_three_match_nolit_encodeBlockAsm
1208 LEAL -15(SI), SI
1209 MOVB BL, 1(AX)
1210 SHRL $0x08, BX
1211 SHLL $0x05, BX
1212 ORL BX, SI
1213 MOVB SI, (AX)
1214 ADDQ $0x02, AX
1215 JMP match_nolit_emitcopy_end_encodeBlockAsm
1216
1217emit_copy_three_match_nolit_encodeBlockAsm:
1218 LEAL -2(SI), SI
1219 MOVB SI, (AX)
1220 MOVW BX, 1(AX)
1221 ADDQ $0x03, AX
1222
1223match_nolit_emitcopy_end_encodeBlockAsm:
1224 CMPL CX, 8(SP)
1225 JAE emit_remainder_encodeBlockAsm
1226 MOVQ -2(DX)(CX*1), SI
1227 CMPQ AX, (SP)
1228 JB match_nolit_dst_ok_encodeBlockAsm
1229 MOVQ $0x00000000, ret+48(FP)
1230 RET
1231
1232match_nolit_dst_ok_encodeBlockAsm:
1233 MOVQ $0x0000cf1bbcdcbf9b, R8
1234 MOVQ SI, DI
1235 SHRQ $0x10, SI
1236 MOVQ SI, BX
1237 SHLQ $0x10, DI
1238 IMULQ R8, DI
1239 SHRQ $0x32, DI
1240 SHLQ $0x10, BX
1241 IMULQ R8, BX
1242 SHRQ $0x32, BX
1243 LEAL -2(CX), R8
1244 LEAQ 24(SP)(BX*4), R9
1245 MOVL (R9), BX
1246 MOVL R8, 24(SP)(DI*4)
1247 MOVL CX, (R9)
1248 CMPL (DX)(BX*1), SI
1249 JEQ match_nolit_loop_encodeBlockAsm
1250 INCL CX
1251 JMP search_loop_encodeBlockAsm
1252
1253emit_remainder_encodeBlockAsm:
1254 MOVQ src_len+32(FP), CX
1255 SUBL 12(SP), CX
1256 LEAQ 5(AX)(CX*1), CX
1257 CMPQ CX, (SP)
1258 JB emit_remainder_ok_encodeBlockAsm
1259 MOVQ $0x00000000, ret+48(FP)
1260 RET
1261
1262emit_remainder_ok_encodeBlockAsm:
1263 MOVQ src_len+32(FP), CX
1264 MOVL 12(SP), BX
1265 CMPL BX, CX
1266 JEQ emit_literal_done_emit_remainder_encodeBlockAsm
1267 MOVL CX, SI
1268 MOVL CX, 12(SP)
1269 LEAQ (DX)(BX*1), CX
1270 SUBL BX, SI
1271 LEAL -1(SI), DX
1272 CMPL DX, $0x3c
1273 JB one_byte_emit_remainder_encodeBlockAsm
1274 CMPL DX, $0x00000100
1275 JB two_bytes_emit_remainder_encodeBlockAsm
1276 CMPL DX, $0x00010000
1277 JB three_bytes_emit_remainder_encodeBlockAsm
1278 CMPL DX, $0x01000000
1279 JB four_bytes_emit_remainder_encodeBlockAsm
1280 MOVB $0xfc, (AX)
1281 MOVL DX, 1(AX)
1282 ADDQ $0x05, AX
1283 JMP memmove_long_emit_remainder_encodeBlockAsm
1284
1285four_bytes_emit_remainder_encodeBlockAsm:
1286 MOVL DX, BX
1287 SHRL $0x10, BX
1288 MOVB $0xf8, (AX)
1289 MOVW DX, 1(AX)
1290 MOVB BL, 3(AX)
1291 ADDQ $0x04, AX
1292 JMP memmove_long_emit_remainder_encodeBlockAsm
1293
1294three_bytes_emit_remainder_encodeBlockAsm:
1295 MOVB $0xf4, (AX)
1296 MOVW DX, 1(AX)
1297 ADDQ $0x03, AX
1298 JMP memmove_long_emit_remainder_encodeBlockAsm
1299
1300two_bytes_emit_remainder_encodeBlockAsm:
1301 MOVB $0xf0, (AX)
1302 MOVB DL, 1(AX)
1303 ADDQ $0x02, AX
1304 CMPL DX, $0x40
1305 JB memmove_emit_remainder_encodeBlockAsm
1306 JMP memmove_long_emit_remainder_encodeBlockAsm
1307
1308one_byte_emit_remainder_encodeBlockAsm:
1309 SHLB $0x02, DL
1310 MOVB DL, (AX)
1311 ADDQ $0x01, AX
1312
1313memmove_emit_remainder_encodeBlockAsm:
1314 LEAQ (AX)(SI*1), DX
1315 MOVL SI, BX
1316
1317 // genMemMoveShort
1318 CMPQ BX, $0x03
1319 JB emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_1or2
1320 JE emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_3
1321 CMPQ BX, $0x08
1322 JB emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_4through7
1323 CMPQ BX, $0x10
1324 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_8through16
1325 CMPQ BX, $0x20
1326 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_17through32
1327 JMP emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_33through64
1328
1329emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_1or2:
1330 MOVB (CX), SI
1331 MOVB -1(CX)(BX*1), CL
1332 MOVB SI, (AX)
1333 MOVB CL, -1(AX)(BX*1)
1334 JMP memmove_end_copy_emit_remainder_encodeBlockAsm
1335
1336emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_3:
1337 MOVW (CX), SI
1338 MOVB 2(CX), CL
1339 MOVW SI, (AX)
1340 MOVB CL, 2(AX)
1341 JMP memmove_end_copy_emit_remainder_encodeBlockAsm
1342
1343emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_4through7:
1344 MOVL (CX), SI
1345 MOVL -4(CX)(BX*1), CX
1346 MOVL SI, (AX)
1347 MOVL CX, -4(AX)(BX*1)
1348 JMP memmove_end_copy_emit_remainder_encodeBlockAsm
1349
1350emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_8through16:
1351 MOVQ (CX), SI
1352 MOVQ -8(CX)(BX*1), CX
1353 MOVQ SI, (AX)
1354 MOVQ CX, -8(AX)(BX*1)
1355 JMP memmove_end_copy_emit_remainder_encodeBlockAsm
1356
1357emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_17through32:
1358 MOVOU (CX), X0
1359 MOVOU -16(CX)(BX*1), X1
1360 MOVOU X0, (AX)
1361 MOVOU X1, -16(AX)(BX*1)
1362 JMP memmove_end_copy_emit_remainder_encodeBlockAsm
1363
1364emit_lit_memmove_emit_remainder_encodeBlockAsm_memmove_move_33through64:
1365 MOVOU (CX), X0
1366 MOVOU 16(CX), X1
1367 MOVOU -32(CX)(BX*1), X2
1368 MOVOU -16(CX)(BX*1), X3
1369 MOVOU X0, (AX)
1370 MOVOU X1, 16(AX)
1371 MOVOU X2, -32(AX)(BX*1)
1372 MOVOU X3, -16(AX)(BX*1)
1373
1374memmove_end_copy_emit_remainder_encodeBlockAsm:
1375 MOVQ DX, AX
1376 JMP emit_literal_done_emit_remainder_encodeBlockAsm
1377
1378memmove_long_emit_remainder_encodeBlockAsm:
1379 LEAQ (AX)(SI*1), DX
1380 MOVL SI, BX
1381
1382 // genMemMoveLong
1383 MOVOU (CX), X0
1384 MOVOU 16(CX), X1
1385 MOVOU -32(CX)(BX*1), X2
1386 MOVOU -16(CX)(BX*1), X3
1387 MOVQ BX, DI
1388 SHRQ $0x05, DI
1389 MOVQ AX, SI
1390 ANDL $0x0000001f, SI
1391 MOVQ $0x00000040, R8
1392 SUBQ SI, R8
1393 DECQ DI
1394 JA emit_lit_memmove_long_emit_remainder_encodeBlockAsmlarge_forward_sse_loop_32
1395 LEAQ -32(CX)(R8*1), SI
1396 LEAQ -32(AX)(R8*1), R9
1397
1398emit_lit_memmove_long_emit_remainder_encodeBlockAsmlarge_big_loop_back:
1399 MOVOU (SI), X4
1400 MOVOU 16(SI), X5
1401 MOVOA X4, (R9)
1402 MOVOA X5, 16(R9)
1403 ADDQ $0x20, R9
1404 ADDQ $0x20, SI
1405 ADDQ $0x20, R8
1406 DECQ DI
1407 JNA emit_lit_memmove_long_emit_remainder_encodeBlockAsmlarge_big_loop_back
1408
1409emit_lit_memmove_long_emit_remainder_encodeBlockAsmlarge_forward_sse_loop_32:
1410 MOVOU -32(CX)(R8*1), X4
1411 MOVOU -16(CX)(R8*1), X5
1412 MOVOA X4, -32(AX)(R8*1)
1413 MOVOA X5, -16(AX)(R8*1)
1414 ADDQ $0x20, R8
1415 CMPQ BX, R8
1416 JAE emit_lit_memmove_long_emit_remainder_encodeBlockAsmlarge_forward_sse_loop_32
1417 MOVOU X0, (AX)
1418 MOVOU X1, 16(AX)
1419 MOVOU X2, -32(AX)(BX*1)
1420 MOVOU X3, -16(AX)(BX*1)
1421 MOVQ DX, AX
1422
1423emit_literal_done_emit_remainder_encodeBlockAsm:
1424 MOVQ dst_base+0(FP), CX
1425 SUBQ CX, AX
1426 MOVQ AX, ret+48(FP)
1427 RET
1428
1429// func encodeBlockAsm4MB(dst []byte, src []byte) int
1430// Requires: BMI, SSE2
1431TEXT ·encodeBlockAsm4MB(SB), $65560-56
1432 MOVQ dst_base+0(FP), AX
1433 MOVQ $0x00000200, CX
1434 LEAQ 24(SP), DX
1435 PXOR X0, X0
1436
1437zero_loop_encodeBlockAsm4MB:
1438 MOVOU X0, (DX)
1439 MOVOU X0, 16(DX)
1440 MOVOU X0, 32(DX)
1441 MOVOU X0, 48(DX)
1442 MOVOU X0, 64(DX)
1443 MOVOU X0, 80(DX)
1444 MOVOU X0, 96(DX)
1445 MOVOU X0, 112(DX)
1446 ADDQ $0x80, DX
1447 DECQ CX
1448 JNZ zero_loop_encodeBlockAsm4MB
1449 MOVL $0x00000000, 12(SP)
1450 MOVQ src_len+32(FP), CX
1451 LEAQ -9(CX), DX
1452 LEAQ -8(CX), BX
1453 MOVL BX, 8(SP)
1454 SHRQ $0x05, CX
1455 SUBL CX, DX
1456 LEAQ (AX)(DX*1), DX
1457 MOVQ DX, (SP)
1458 MOVL $0x00000001, CX
1459 MOVL CX, 16(SP)
1460 MOVQ src_base+24(FP), DX
1461
1462search_loop_encodeBlockAsm4MB:
1463 MOVL CX, BX
1464 SUBL 12(SP), BX
1465 SHRL $0x06, BX
1466 LEAL 4(CX)(BX*1), BX
1467 CMPL BX, 8(SP)
1468 JAE emit_remainder_encodeBlockAsm4MB
1469 MOVQ (DX)(CX*1), SI
1470 MOVL BX, 20(SP)
1471 MOVQ $0x0000cf1bbcdcbf9b, R8
1472 MOVQ SI, R9
1473 MOVQ SI, R10
1474 SHRQ $0x08, R10
1475 SHLQ $0x10, R9
1476 IMULQ R8, R9
1477 SHRQ $0x32, R9
1478 SHLQ $0x10, R10
1479 IMULQ R8, R10
1480 SHRQ $0x32, R10
1481 MOVL 24(SP)(R9*4), BX
1482 MOVL 24(SP)(R10*4), DI
1483 MOVL CX, 24(SP)(R9*4)
1484 LEAL 1(CX), R9
1485 MOVL R9, 24(SP)(R10*4)
1486 MOVQ SI, R9
1487 SHRQ $0x10, R9
1488 SHLQ $0x10, R9
1489 IMULQ R8, R9
1490 SHRQ $0x32, R9
1491 MOVL CX, R8
1492 SUBL 16(SP), R8
1493 MOVL 1(DX)(R8*1), R10
1494 MOVQ SI, R8
1495 SHRQ $0x08, R8
1496 CMPL R8, R10
1497 JNE no_repeat_found_encodeBlockAsm4MB
1498 LEAL 1(CX), SI
1499 MOVL 12(SP), DI
1500 MOVL SI, BX
1501 SUBL 16(SP), BX
1502 JZ repeat_extend_back_end_encodeBlockAsm4MB
1503
1504repeat_extend_back_loop_encodeBlockAsm4MB:
1505 CMPL SI, DI
1506 JBE repeat_extend_back_end_encodeBlockAsm4MB
1507 MOVB -1(DX)(BX*1), R8
1508 MOVB -1(DX)(SI*1), R9
1509 CMPB R8, R9
1510 JNE repeat_extend_back_end_encodeBlockAsm4MB
1511 LEAL -1(SI), SI
1512 DECL BX
1513 JNZ repeat_extend_back_loop_encodeBlockAsm4MB
1514
1515repeat_extend_back_end_encodeBlockAsm4MB:
1516 MOVL 12(SP), BX
1517 CMPL BX, SI
1518 JEQ emit_literal_done_repeat_emit_encodeBlockAsm4MB
1519 MOVL SI, R8
1520 MOVL SI, 12(SP)
1521 LEAQ (DX)(BX*1), R9
1522 SUBL BX, R8
1523 LEAL -1(R8), BX
1524 CMPL BX, $0x3c
1525 JB one_byte_repeat_emit_encodeBlockAsm4MB
1526 CMPL BX, $0x00000100
1527 JB two_bytes_repeat_emit_encodeBlockAsm4MB
1528 CMPL BX, $0x00010000
1529 JB three_bytes_repeat_emit_encodeBlockAsm4MB
1530 MOVL BX, R10
1531 SHRL $0x10, R10
1532 MOVB $0xf8, (AX)
1533 MOVW BX, 1(AX)
1534 MOVB R10, 3(AX)
1535 ADDQ $0x04, AX
1536 JMP memmove_long_repeat_emit_encodeBlockAsm4MB
1537
1538three_bytes_repeat_emit_encodeBlockAsm4MB:
1539 MOVB $0xf4, (AX)
1540 MOVW BX, 1(AX)
1541 ADDQ $0x03, AX
1542 JMP memmove_long_repeat_emit_encodeBlockAsm4MB
1543
1544two_bytes_repeat_emit_encodeBlockAsm4MB:
1545 MOVB $0xf0, (AX)
1546 MOVB BL, 1(AX)
1547 ADDQ $0x02, AX
1548 CMPL BX, $0x40
1549 JB memmove_repeat_emit_encodeBlockAsm4MB
1550 JMP memmove_long_repeat_emit_encodeBlockAsm4MB
1551
1552one_byte_repeat_emit_encodeBlockAsm4MB:
1553 SHLB $0x02, BL
1554 MOVB BL, (AX)
1555 ADDQ $0x01, AX
1556
1557memmove_repeat_emit_encodeBlockAsm4MB:
1558 LEAQ (AX)(R8*1), BX
1559
1560 // genMemMoveShort
1561 CMPQ R8, $0x08
1562 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_8
1563 CMPQ R8, $0x10
1564 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_8through16
1565 CMPQ R8, $0x20
1566 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_17through32
1567 JMP emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_33through64
1568
1569emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_8:
1570 MOVQ (R9), R10
1571 MOVQ R10, (AX)
1572 JMP memmove_end_copy_repeat_emit_encodeBlockAsm4MB
1573
1574emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_8through16:
1575 MOVQ (R9), R10
1576 MOVQ -8(R9)(R8*1), R9
1577 MOVQ R10, (AX)
1578 MOVQ R9, -8(AX)(R8*1)
1579 JMP memmove_end_copy_repeat_emit_encodeBlockAsm4MB
1580
1581emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_17through32:
1582 MOVOU (R9), X0
1583 MOVOU -16(R9)(R8*1), X1
1584 MOVOU X0, (AX)
1585 MOVOU X1, -16(AX)(R8*1)
1586 JMP memmove_end_copy_repeat_emit_encodeBlockAsm4MB
1587
1588emit_lit_memmove_repeat_emit_encodeBlockAsm4MB_memmove_move_33through64:
1589 MOVOU (R9), X0
1590 MOVOU 16(R9), X1
1591 MOVOU -32(R9)(R8*1), X2
1592 MOVOU -16(R9)(R8*1), X3
1593 MOVOU X0, (AX)
1594 MOVOU X1, 16(AX)
1595 MOVOU X2, -32(AX)(R8*1)
1596 MOVOU X3, -16(AX)(R8*1)
1597
1598memmove_end_copy_repeat_emit_encodeBlockAsm4MB:
1599 MOVQ BX, AX
1600 JMP emit_literal_done_repeat_emit_encodeBlockAsm4MB
1601
1602memmove_long_repeat_emit_encodeBlockAsm4MB:
1603 LEAQ (AX)(R8*1), BX
1604
1605 // genMemMoveLong
1606 MOVOU (R9), X0
1607 MOVOU 16(R9), X1
1608 MOVOU -32(R9)(R8*1), X2
1609 MOVOU -16(R9)(R8*1), X3
1610 MOVQ R8, R11
1611 SHRQ $0x05, R11
1612 MOVQ AX, R10
1613 ANDL $0x0000001f, R10
1614 MOVQ $0x00000040, R12
1615 SUBQ R10, R12
1616 DECQ R11
1617 JA emit_lit_memmove_long_repeat_emit_encodeBlockAsm4MBlarge_forward_sse_loop_32
1618 LEAQ -32(R9)(R12*1), R10
1619 LEAQ -32(AX)(R12*1), R13
1620
1621emit_lit_memmove_long_repeat_emit_encodeBlockAsm4MBlarge_big_loop_back:
1622 MOVOU (R10), X4
1623 MOVOU 16(R10), X5
1624 MOVOA X4, (R13)
1625 MOVOA X5, 16(R13)
1626 ADDQ $0x20, R13
1627 ADDQ $0x20, R10
1628 ADDQ $0x20, R12
1629 DECQ R11
1630 JNA emit_lit_memmove_long_repeat_emit_encodeBlockAsm4MBlarge_big_loop_back
1631
1632emit_lit_memmove_long_repeat_emit_encodeBlockAsm4MBlarge_forward_sse_loop_32:
1633 MOVOU -32(R9)(R12*1), X4
1634 MOVOU -16(R9)(R12*1), X5
1635 MOVOA X4, -32(AX)(R12*1)
1636 MOVOA X5, -16(AX)(R12*1)
1637 ADDQ $0x20, R12
1638 CMPQ R8, R12
1639 JAE emit_lit_memmove_long_repeat_emit_encodeBlockAsm4MBlarge_forward_sse_loop_32
1640 MOVOU X0, (AX)
1641 MOVOU X1, 16(AX)
1642 MOVOU X2, -32(AX)(R8*1)
1643 MOVOU X3, -16(AX)(R8*1)
1644 MOVQ BX, AX
1645
1646emit_literal_done_repeat_emit_encodeBlockAsm4MB:
1647 ADDL $0x05, CX
1648 MOVL CX, BX
1649 SUBL 16(SP), BX
1650 MOVQ src_len+32(FP), R8
1651 SUBL CX, R8
1652 LEAQ (DX)(CX*1), R9
1653 LEAQ (DX)(BX*1), BX
1654
1655 // matchLen
1656 XORL R11, R11
1657
1658matchlen_loopback_16_repeat_extend_encodeBlockAsm4MB:
1659 CMPL R8, $0x10
1660 JB matchlen_match8_repeat_extend_encodeBlockAsm4MB
1661 MOVQ (R9)(R11*1), R10
1662 MOVQ 8(R9)(R11*1), R12
1663 XORQ (BX)(R11*1), R10
1664 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm4MB
1665 XORQ 8(BX)(R11*1), R12
1666 JNZ matchlen_bsf_16repeat_extend_encodeBlockAsm4MB
1667 LEAL -16(R8), R8
1668 LEAL 16(R11), R11
1669 JMP matchlen_loopback_16_repeat_extend_encodeBlockAsm4MB
1670
1671matchlen_bsf_16repeat_extend_encodeBlockAsm4MB:
1672#ifdef GOAMD64_v3
1673 TZCNTQ R12, R12
1674
1675#else
1676 BSFQ R12, R12
1677
1678#endif
1679 SARQ $0x03, R12
1680 LEAL 8(R11)(R12*1), R11
1681 JMP repeat_extend_forward_end_encodeBlockAsm4MB
1682
1683matchlen_match8_repeat_extend_encodeBlockAsm4MB:
1684 CMPL R8, $0x08
1685 JB matchlen_match4_repeat_extend_encodeBlockAsm4MB
1686 MOVQ (R9)(R11*1), R10
1687 XORQ (BX)(R11*1), R10
1688 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm4MB
1689 LEAL -8(R8), R8
1690 LEAL 8(R11), R11
1691 JMP matchlen_match4_repeat_extend_encodeBlockAsm4MB
1692
1693matchlen_bsf_8_repeat_extend_encodeBlockAsm4MB:
1694#ifdef GOAMD64_v3
1695 TZCNTQ R10, R10
1696
1697#else
1698 BSFQ R10, R10
1699
1700#endif
1701 SARQ $0x03, R10
1702 LEAL (R11)(R10*1), R11
1703 JMP repeat_extend_forward_end_encodeBlockAsm4MB
1704
1705matchlen_match4_repeat_extend_encodeBlockAsm4MB:
1706 CMPL R8, $0x04
1707 JB matchlen_match2_repeat_extend_encodeBlockAsm4MB
1708 MOVL (R9)(R11*1), R10
1709 CMPL (BX)(R11*1), R10
1710 JNE matchlen_match2_repeat_extend_encodeBlockAsm4MB
1711 LEAL -4(R8), R8
1712 LEAL 4(R11), R11
1713
1714matchlen_match2_repeat_extend_encodeBlockAsm4MB:
1715 CMPL R8, $0x01
1716 JE matchlen_match1_repeat_extend_encodeBlockAsm4MB
1717 JB repeat_extend_forward_end_encodeBlockAsm4MB
1718 MOVW (R9)(R11*1), R10
1719 CMPW (BX)(R11*1), R10
1720 JNE matchlen_match1_repeat_extend_encodeBlockAsm4MB
1721 LEAL 2(R11), R11
1722 SUBL $0x02, R8
1723 JZ repeat_extend_forward_end_encodeBlockAsm4MB
1724
1725matchlen_match1_repeat_extend_encodeBlockAsm4MB:
1726 MOVB (R9)(R11*1), R10
1727 CMPB (BX)(R11*1), R10
1728 JNE repeat_extend_forward_end_encodeBlockAsm4MB
1729 LEAL 1(R11), R11
1730
1731repeat_extend_forward_end_encodeBlockAsm4MB:
1732 ADDL R11, CX
1733 MOVL CX, BX
1734 SUBL SI, BX
1735 MOVL 16(SP), SI
1736 TESTL DI, DI
1737 JZ repeat_as_copy_encodeBlockAsm4MB
1738
1739 // emitRepeat
1740 MOVL BX, DI
1741 LEAL -4(BX), BX
1742 CMPL DI, $0x08
1743 JBE repeat_two_match_repeat_encodeBlockAsm4MB
1744 CMPL DI, $0x0c
1745 JAE cant_repeat_two_offset_match_repeat_encodeBlockAsm4MB
1746 CMPL SI, $0x00000800
1747 JB repeat_two_offset_match_repeat_encodeBlockAsm4MB
1748
1749cant_repeat_two_offset_match_repeat_encodeBlockAsm4MB:
1750 CMPL BX, $0x00000104
1751 JB repeat_three_match_repeat_encodeBlockAsm4MB
1752 CMPL BX, $0x00010100
1753 JB repeat_four_match_repeat_encodeBlockAsm4MB
1754 LEAL -65536(BX), BX
1755 MOVL BX, SI
1756 MOVW $0x001d, (AX)
1757 MOVW BX, 2(AX)
1758 SARL $0x10, SI
1759 MOVB SI, 4(AX)
1760 ADDQ $0x05, AX
1761 JMP repeat_end_emit_encodeBlockAsm4MB
1762
1763repeat_four_match_repeat_encodeBlockAsm4MB:
1764 LEAL -256(BX), BX
1765 MOVW $0x0019, (AX)
1766 MOVW BX, 2(AX)
1767 ADDQ $0x04, AX
1768 JMP repeat_end_emit_encodeBlockAsm4MB
1769
1770repeat_three_match_repeat_encodeBlockAsm4MB:
1771 LEAL -4(BX), BX
1772 MOVW $0x0015, (AX)
1773 MOVB BL, 2(AX)
1774 ADDQ $0x03, AX
1775 JMP repeat_end_emit_encodeBlockAsm4MB
1776
1777repeat_two_match_repeat_encodeBlockAsm4MB:
1778 SHLL $0x02, BX
1779 ORL $0x01, BX
1780 MOVW BX, (AX)
1781 ADDQ $0x02, AX
1782 JMP repeat_end_emit_encodeBlockAsm4MB
1783
1784repeat_two_offset_match_repeat_encodeBlockAsm4MB:
1785 XORQ DI, DI
1786 LEAL 1(DI)(BX*4), BX
1787 MOVB SI, 1(AX)
1788 SARL $0x08, SI
1789 SHLL $0x05, SI
1790 ORL SI, BX
1791 MOVB BL, (AX)
1792 ADDQ $0x02, AX
1793 JMP repeat_end_emit_encodeBlockAsm4MB
1794
1795repeat_as_copy_encodeBlockAsm4MB:
1796 // emitCopy
1797 CMPL SI, $0x00010000
1798 JB two_byte_offset_repeat_as_copy_encodeBlockAsm4MB
1799 CMPL BX, $0x40
1800 JBE four_bytes_remain_repeat_as_copy_encodeBlockAsm4MB
1801 MOVB $0xff, (AX)
1802 MOVL SI, 1(AX)
1803 LEAL -64(BX), BX
1804 ADDQ $0x05, AX
1805 CMPL BX, $0x04
1806 JB four_bytes_remain_repeat_as_copy_encodeBlockAsm4MB
1807
1808 // emitRepeat
1809 MOVL BX, DI
1810 LEAL -4(BX), BX
1811 CMPL DI, $0x08
1812 JBE repeat_two_repeat_as_copy_encodeBlockAsm4MB_emit_copy
1813 CMPL DI, $0x0c
1814 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy
1815 CMPL SI, $0x00000800
1816 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy
1817
1818cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy:
1819 CMPL BX, $0x00000104
1820 JB repeat_three_repeat_as_copy_encodeBlockAsm4MB_emit_copy
1821 CMPL BX, $0x00010100
1822 JB repeat_four_repeat_as_copy_encodeBlockAsm4MB_emit_copy
1823 LEAL -65536(BX), BX
1824 MOVL BX, SI
1825 MOVW $0x001d, (AX)
1826 MOVW BX, 2(AX)
1827 SARL $0x10, SI
1828 MOVB SI, 4(AX)
1829 ADDQ $0x05, AX
1830 JMP repeat_end_emit_encodeBlockAsm4MB
1831
1832repeat_four_repeat_as_copy_encodeBlockAsm4MB_emit_copy:
1833 LEAL -256(BX), BX
1834 MOVW $0x0019, (AX)
1835 MOVW BX, 2(AX)
1836 ADDQ $0x04, AX
1837 JMP repeat_end_emit_encodeBlockAsm4MB
1838
1839repeat_three_repeat_as_copy_encodeBlockAsm4MB_emit_copy:
1840 LEAL -4(BX), BX
1841 MOVW $0x0015, (AX)
1842 MOVB BL, 2(AX)
1843 ADDQ $0x03, AX
1844 JMP repeat_end_emit_encodeBlockAsm4MB
1845
1846repeat_two_repeat_as_copy_encodeBlockAsm4MB_emit_copy:
1847 SHLL $0x02, BX
1848 ORL $0x01, BX
1849 MOVW BX, (AX)
1850 ADDQ $0x02, AX
1851 JMP repeat_end_emit_encodeBlockAsm4MB
1852
1853repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy:
1854 XORQ DI, DI
1855 LEAL 1(DI)(BX*4), BX
1856 MOVB SI, 1(AX)
1857 SARL $0x08, SI
1858 SHLL $0x05, SI
1859 ORL SI, BX
1860 MOVB BL, (AX)
1861 ADDQ $0x02, AX
1862 JMP repeat_end_emit_encodeBlockAsm4MB
1863
1864four_bytes_remain_repeat_as_copy_encodeBlockAsm4MB:
1865 TESTL BX, BX
1866 JZ repeat_end_emit_encodeBlockAsm4MB
1867 XORL DI, DI
1868 LEAL -1(DI)(BX*4), BX
1869 MOVB BL, (AX)
1870 MOVL SI, 1(AX)
1871 ADDQ $0x05, AX
1872 JMP repeat_end_emit_encodeBlockAsm4MB
1873
1874two_byte_offset_repeat_as_copy_encodeBlockAsm4MB:
1875 CMPL BX, $0x40
1876 JBE two_byte_offset_short_repeat_as_copy_encodeBlockAsm4MB
1877 CMPL SI, $0x00000800
1878 JAE long_offset_short_repeat_as_copy_encodeBlockAsm4MB
1879 MOVL $0x00000001, DI
1880 LEAL 16(DI), DI
1881 MOVB SI, 1(AX)
1882 SHRL $0x08, SI
1883 SHLL $0x05, SI
1884 ORL SI, DI
1885 MOVB DI, (AX)
1886 ADDQ $0x02, AX
1887 SUBL $0x08, BX
1888
1889 // emitRepeat
1890 LEAL -4(BX), BX
1891 JMP cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b
1892 MOVL BX, DI
1893 LEAL -4(BX), BX
1894 CMPL DI, $0x08
1895 JBE repeat_two_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b
1896 CMPL DI, $0x0c
1897 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b
1898 CMPL SI, $0x00000800
1899 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b
1900
1901cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b:
1902 CMPL BX, $0x00000104
1903 JB repeat_three_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b
1904 CMPL BX, $0x00010100
1905 JB repeat_four_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b
1906 LEAL -65536(BX), BX
1907 MOVL BX, SI
1908 MOVW $0x001d, (AX)
1909 MOVW BX, 2(AX)
1910 SARL $0x10, SI
1911 MOVB SI, 4(AX)
1912 ADDQ $0x05, AX
1913 JMP repeat_end_emit_encodeBlockAsm4MB
1914
1915repeat_four_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b:
1916 LEAL -256(BX), BX
1917 MOVW $0x0019, (AX)
1918 MOVW BX, 2(AX)
1919 ADDQ $0x04, AX
1920 JMP repeat_end_emit_encodeBlockAsm4MB
1921
1922repeat_three_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b:
1923 LEAL -4(BX), BX
1924 MOVW $0x0015, (AX)
1925 MOVB BL, 2(AX)
1926 ADDQ $0x03, AX
1927 JMP repeat_end_emit_encodeBlockAsm4MB
1928
1929repeat_two_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b:
1930 SHLL $0x02, BX
1931 ORL $0x01, BX
1932 MOVW BX, (AX)
1933 ADDQ $0x02, AX
1934 JMP repeat_end_emit_encodeBlockAsm4MB
1935
1936repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short_2b:
1937 XORQ DI, DI
1938 LEAL 1(DI)(BX*4), BX
1939 MOVB SI, 1(AX)
1940 SARL $0x08, SI
1941 SHLL $0x05, SI
1942 ORL SI, BX
1943 MOVB BL, (AX)
1944 ADDQ $0x02, AX
1945 JMP repeat_end_emit_encodeBlockAsm4MB
1946
1947long_offset_short_repeat_as_copy_encodeBlockAsm4MB:
1948 MOVB $0xee, (AX)
1949 MOVW SI, 1(AX)
1950 LEAL -60(BX), BX
1951 ADDQ $0x03, AX
1952
1953 // emitRepeat
1954 MOVL BX, DI
1955 LEAL -4(BX), BX
1956 CMPL DI, $0x08
1957 JBE repeat_two_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short
1958 CMPL DI, $0x0c
1959 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short
1960 CMPL SI, $0x00000800
1961 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short
1962
1963cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short:
1964 CMPL BX, $0x00000104
1965 JB repeat_three_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short
1966 CMPL BX, $0x00010100
1967 JB repeat_four_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short
1968 LEAL -65536(BX), BX
1969 MOVL BX, SI
1970 MOVW $0x001d, (AX)
1971 MOVW BX, 2(AX)
1972 SARL $0x10, SI
1973 MOVB SI, 4(AX)
1974 ADDQ $0x05, AX
1975 JMP repeat_end_emit_encodeBlockAsm4MB
1976
1977repeat_four_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short:
1978 LEAL -256(BX), BX
1979 MOVW $0x0019, (AX)
1980 MOVW BX, 2(AX)
1981 ADDQ $0x04, AX
1982 JMP repeat_end_emit_encodeBlockAsm4MB
1983
1984repeat_three_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short:
1985 LEAL -4(BX), BX
1986 MOVW $0x0015, (AX)
1987 MOVB BL, 2(AX)
1988 ADDQ $0x03, AX
1989 JMP repeat_end_emit_encodeBlockAsm4MB
1990
1991repeat_two_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short:
1992 SHLL $0x02, BX
1993 ORL $0x01, BX
1994 MOVW BX, (AX)
1995 ADDQ $0x02, AX
1996 JMP repeat_end_emit_encodeBlockAsm4MB
1997
1998repeat_two_offset_repeat_as_copy_encodeBlockAsm4MB_emit_copy_short:
1999 XORQ DI, DI
2000 LEAL 1(DI)(BX*4), BX
2001 MOVB SI, 1(AX)
2002 SARL $0x08, SI
2003 SHLL $0x05, SI
2004 ORL SI, BX
2005 MOVB BL, (AX)
2006 ADDQ $0x02, AX
2007 JMP repeat_end_emit_encodeBlockAsm4MB
2008
2009two_byte_offset_short_repeat_as_copy_encodeBlockAsm4MB:
2010 MOVL BX, DI
2011 SHLL $0x02, DI
2012 CMPL BX, $0x0c
2013 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm4MB
2014 CMPL SI, $0x00000800
2015 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm4MB
2016 LEAL -15(DI), DI
2017 MOVB SI, 1(AX)
2018 SHRL $0x08, SI
2019 SHLL $0x05, SI
2020 ORL SI, DI
2021 MOVB DI, (AX)
2022 ADDQ $0x02, AX
2023 JMP repeat_end_emit_encodeBlockAsm4MB
2024
2025emit_copy_three_repeat_as_copy_encodeBlockAsm4MB:
2026 LEAL -2(DI), DI
2027 MOVB DI, (AX)
2028 MOVW SI, 1(AX)
2029 ADDQ $0x03, AX
2030
2031repeat_end_emit_encodeBlockAsm4MB:
2032 MOVL CX, 12(SP)
2033 JMP search_loop_encodeBlockAsm4MB
2034
2035no_repeat_found_encodeBlockAsm4MB:
2036 CMPL (DX)(BX*1), SI
2037 JEQ candidate_match_encodeBlockAsm4MB
2038 SHRQ $0x08, SI
2039 MOVL 24(SP)(R9*4), BX
2040 LEAL 2(CX), R8
2041 CMPL (DX)(DI*1), SI
2042 JEQ candidate2_match_encodeBlockAsm4MB
2043 MOVL R8, 24(SP)(R9*4)
2044 SHRQ $0x08, SI
2045 CMPL (DX)(BX*1), SI
2046 JEQ candidate3_match_encodeBlockAsm4MB
2047 MOVL 20(SP), CX
2048 JMP search_loop_encodeBlockAsm4MB
2049
2050candidate3_match_encodeBlockAsm4MB:
2051 ADDL $0x02, CX
2052 JMP candidate_match_encodeBlockAsm4MB
2053
2054candidate2_match_encodeBlockAsm4MB:
2055 MOVL R8, 24(SP)(R9*4)
2056 INCL CX
2057 MOVL DI, BX
2058
2059candidate_match_encodeBlockAsm4MB:
2060 MOVL 12(SP), SI
2061 TESTL BX, BX
2062 JZ match_extend_back_end_encodeBlockAsm4MB
2063
2064match_extend_back_loop_encodeBlockAsm4MB:
2065 CMPL CX, SI
2066 JBE match_extend_back_end_encodeBlockAsm4MB
2067 MOVB -1(DX)(BX*1), DI
2068 MOVB -1(DX)(CX*1), R8
2069 CMPB DI, R8
2070 JNE match_extend_back_end_encodeBlockAsm4MB
2071 LEAL -1(CX), CX
2072 DECL BX
2073 JZ match_extend_back_end_encodeBlockAsm4MB
2074 JMP match_extend_back_loop_encodeBlockAsm4MB
2075
2076match_extend_back_end_encodeBlockAsm4MB:
2077 MOVL CX, SI
2078 SUBL 12(SP), SI
2079 LEAQ 4(AX)(SI*1), SI
2080 CMPQ SI, (SP)
2081 JB match_dst_size_check_encodeBlockAsm4MB
2082 MOVQ $0x00000000, ret+48(FP)
2083 RET
2084
2085match_dst_size_check_encodeBlockAsm4MB:
2086 MOVL CX, SI
2087 MOVL 12(SP), DI
2088 CMPL DI, SI
2089 JEQ emit_literal_done_match_emit_encodeBlockAsm4MB
2090 MOVL SI, R8
2091 MOVL SI, 12(SP)
2092 LEAQ (DX)(DI*1), SI
2093 SUBL DI, R8
2094 LEAL -1(R8), DI
2095 CMPL DI, $0x3c
2096 JB one_byte_match_emit_encodeBlockAsm4MB
2097 CMPL DI, $0x00000100
2098 JB two_bytes_match_emit_encodeBlockAsm4MB
2099 CMPL DI, $0x00010000
2100 JB three_bytes_match_emit_encodeBlockAsm4MB
2101 MOVL DI, R9
2102 SHRL $0x10, R9
2103 MOVB $0xf8, (AX)
2104 MOVW DI, 1(AX)
2105 MOVB R9, 3(AX)
2106 ADDQ $0x04, AX
2107 JMP memmove_long_match_emit_encodeBlockAsm4MB
2108
2109three_bytes_match_emit_encodeBlockAsm4MB:
2110 MOVB $0xf4, (AX)
2111 MOVW DI, 1(AX)
2112 ADDQ $0x03, AX
2113 JMP memmove_long_match_emit_encodeBlockAsm4MB
2114
2115two_bytes_match_emit_encodeBlockAsm4MB:
2116 MOVB $0xf0, (AX)
2117 MOVB DI, 1(AX)
2118 ADDQ $0x02, AX
2119 CMPL DI, $0x40
2120 JB memmove_match_emit_encodeBlockAsm4MB
2121 JMP memmove_long_match_emit_encodeBlockAsm4MB
2122
2123one_byte_match_emit_encodeBlockAsm4MB:
2124 SHLB $0x02, DI
2125 MOVB DI, (AX)
2126 ADDQ $0x01, AX
2127
2128memmove_match_emit_encodeBlockAsm4MB:
2129 LEAQ (AX)(R8*1), DI
2130
2131 // genMemMoveShort
2132 CMPQ R8, $0x08
2133 JBE emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_8
2134 CMPQ R8, $0x10
2135 JBE emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_8through16
2136 CMPQ R8, $0x20
2137 JBE emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_17through32
2138 JMP emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_33through64
2139
2140emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_8:
2141 MOVQ (SI), R9
2142 MOVQ R9, (AX)
2143 JMP memmove_end_copy_match_emit_encodeBlockAsm4MB
2144
2145emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_8through16:
2146 MOVQ (SI), R9
2147 MOVQ -8(SI)(R8*1), SI
2148 MOVQ R9, (AX)
2149 MOVQ SI, -8(AX)(R8*1)
2150 JMP memmove_end_copy_match_emit_encodeBlockAsm4MB
2151
2152emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_17through32:
2153 MOVOU (SI), X0
2154 MOVOU -16(SI)(R8*1), X1
2155 MOVOU X0, (AX)
2156 MOVOU X1, -16(AX)(R8*1)
2157 JMP memmove_end_copy_match_emit_encodeBlockAsm4MB
2158
2159emit_lit_memmove_match_emit_encodeBlockAsm4MB_memmove_move_33through64:
2160 MOVOU (SI), X0
2161 MOVOU 16(SI), X1
2162 MOVOU -32(SI)(R8*1), X2
2163 MOVOU -16(SI)(R8*1), X3
2164 MOVOU X0, (AX)
2165 MOVOU X1, 16(AX)
2166 MOVOU X2, -32(AX)(R8*1)
2167 MOVOU X3, -16(AX)(R8*1)
2168
2169memmove_end_copy_match_emit_encodeBlockAsm4MB:
2170 MOVQ DI, AX
2171 JMP emit_literal_done_match_emit_encodeBlockAsm4MB
2172
2173memmove_long_match_emit_encodeBlockAsm4MB:
2174 LEAQ (AX)(R8*1), DI
2175
2176 // genMemMoveLong
2177 MOVOU (SI), X0
2178 MOVOU 16(SI), X1
2179 MOVOU -32(SI)(R8*1), X2
2180 MOVOU -16(SI)(R8*1), X3
2181 MOVQ R8, R10
2182 SHRQ $0x05, R10
2183 MOVQ AX, R9
2184 ANDL $0x0000001f, R9
2185 MOVQ $0x00000040, R11
2186 SUBQ R9, R11
2187 DECQ R10
2188 JA emit_lit_memmove_long_match_emit_encodeBlockAsm4MBlarge_forward_sse_loop_32
2189 LEAQ -32(SI)(R11*1), R9
2190 LEAQ -32(AX)(R11*1), R12
2191
2192emit_lit_memmove_long_match_emit_encodeBlockAsm4MBlarge_big_loop_back:
2193 MOVOU (R9), X4
2194 MOVOU 16(R9), X5
2195 MOVOA X4, (R12)
2196 MOVOA X5, 16(R12)
2197 ADDQ $0x20, R12
2198 ADDQ $0x20, R9
2199 ADDQ $0x20, R11
2200 DECQ R10
2201 JNA emit_lit_memmove_long_match_emit_encodeBlockAsm4MBlarge_big_loop_back
2202
2203emit_lit_memmove_long_match_emit_encodeBlockAsm4MBlarge_forward_sse_loop_32:
2204 MOVOU -32(SI)(R11*1), X4
2205 MOVOU -16(SI)(R11*1), X5
2206 MOVOA X4, -32(AX)(R11*1)
2207 MOVOA X5, -16(AX)(R11*1)
2208 ADDQ $0x20, R11
2209 CMPQ R8, R11
2210 JAE emit_lit_memmove_long_match_emit_encodeBlockAsm4MBlarge_forward_sse_loop_32
2211 MOVOU X0, (AX)
2212 MOVOU X1, 16(AX)
2213 MOVOU X2, -32(AX)(R8*1)
2214 MOVOU X3, -16(AX)(R8*1)
2215 MOVQ DI, AX
2216
2217emit_literal_done_match_emit_encodeBlockAsm4MB:
2218match_nolit_loop_encodeBlockAsm4MB:
2219 MOVL CX, SI
2220 SUBL BX, SI
2221 MOVL SI, 16(SP)
2222 ADDL $0x04, CX
2223 ADDL $0x04, BX
2224 MOVQ src_len+32(FP), SI
2225 SUBL CX, SI
2226 LEAQ (DX)(CX*1), DI
2227 LEAQ (DX)(BX*1), BX
2228
2229 // matchLen
2230 XORL R9, R9
2231
2232matchlen_loopback_16_match_nolit_encodeBlockAsm4MB:
2233 CMPL SI, $0x10
2234 JB matchlen_match8_match_nolit_encodeBlockAsm4MB
2235 MOVQ (DI)(R9*1), R8
2236 MOVQ 8(DI)(R9*1), R10
2237 XORQ (BX)(R9*1), R8
2238 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm4MB
2239 XORQ 8(BX)(R9*1), R10
2240 JNZ matchlen_bsf_16match_nolit_encodeBlockAsm4MB
2241 LEAL -16(SI), SI
2242 LEAL 16(R9), R9
2243 JMP matchlen_loopback_16_match_nolit_encodeBlockAsm4MB
2244
2245matchlen_bsf_16match_nolit_encodeBlockAsm4MB:
2246#ifdef GOAMD64_v3
2247 TZCNTQ R10, R10
2248
2249#else
2250 BSFQ R10, R10
2251
2252#endif
2253 SARQ $0x03, R10
2254 LEAL 8(R9)(R10*1), R9
2255 JMP match_nolit_end_encodeBlockAsm4MB
2256
2257matchlen_match8_match_nolit_encodeBlockAsm4MB:
2258 CMPL SI, $0x08
2259 JB matchlen_match4_match_nolit_encodeBlockAsm4MB
2260 MOVQ (DI)(R9*1), R8
2261 XORQ (BX)(R9*1), R8
2262 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm4MB
2263 LEAL -8(SI), SI
2264 LEAL 8(R9), R9
2265 JMP matchlen_match4_match_nolit_encodeBlockAsm4MB
2266
2267matchlen_bsf_8_match_nolit_encodeBlockAsm4MB:
2268#ifdef GOAMD64_v3
2269 TZCNTQ R8, R8
2270
2271#else
2272 BSFQ R8, R8
2273
2274#endif
2275 SARQ $0x03, R8
2276 LEAL (R9)(R8*1), R9
2277 JMP match_nolit_end_encodeBlockAsm4MB
2278
2279matchlen_match4_match_nolit_encodeBlockAsm4MB:
2280 CMPL SI, $0x04
2281 JB matchlen_match2_match_nolit_encodeBlockAsm4MB
2282 MOVL (DI)(R9*1), R8
2283 CMPL (BX)(R9*1), R8
2284 JNE matchlen_match2_match_nolit_encodeBlockAsm4MB
2285 LEAL -4(SI), SI
2286 LEAL 4(R9), R9
2287
2288matchlen_match2_match_nolit_encodeBlockAsm4MB:
2289 CMPL SI, $0x01
2290 JE matchlen_match1_match_nolit_encodeBlockAsm4MB
2291 JB match_nolit_end_encodeBlockAsm4MB
2292 MOVW (DI)(R9*1), R8
2293 CMPW (BX)(R9*1), R8
2294 JNE matchlen_match1_match_nolit_encodeBlockAsm4MB
2295 LEAL 2(R9), R9
2296 SUBL $0x02, SI
2297 JZ match_nolit_end_encodeBlockAsm4MB
2298
2299matchlen_match1_match_nolit_encodeBlockAsm4MB:
2300 MOVB (DI)(R9*1), R8
2301 CMPB (BX)(R9*1), R8
2302 JNE match_nolit_end_encodeBlockAsm4MB
2303 LEAL 1(R9), R9
2304
2305match_nolit_end_encodeBlockAsm4MB:
2306 ADDL R9, CX
2307 MOVL 16(SP), BX
2308 ADDL $0x04, R9
2309 MOVL CX, 12(SP)
2310
2311 // emitCopy
2312 CMPL BX, $0x00010000
2313 JB two_byte_offset_match_nolit_encodeBlockAsm4MB
2314 CMPL R9, $0x40
2315 JBE four_bytes_remain_match_nolit_encodeBlockAsm4MB
2316 MOVB $0xff, (AX)
2317 MOVL BX, 1(AX)
2318 LEAL -64(R9), R9
2319 ADDQ $0x05, AX
2320 CMPL R9, $0x04
2321 JB four_bytes_remain_match_nolit_encodeBlockAsm4MB
2322
2323 // emitRepeat
2324 MOVL R9, SI
2325 LEAL -4(R9), R9
2326 CMPL SI, $0x08
2327 JBE repeat_two_match_nolit_encodeBlockAsm4MB_emit_copy
2328 CMPL SI, $0x0c
2329 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy
2330 CMPL BX, $0x00000800
2331 JB repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy
2332
2333cant_repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy:
2334 CMPL R9, $0x00000104
2335 JB repeat_three_match_nolit_encodeBlockAsm4MB_emit_copy
2336 CMPL R9, $0x00010100
2337 JB repeat_four_match_nolit_encodeBlockAsm4MB_emit_copy
2338 LEAL -65536(R9), R9
2339 MOVL R9, BX
2340 MOVW $0x001d, (AX)
2341 MOVW R9, 2(AX)
2342 SARL $0x10, BX
2343 MOVB BL, 4(AX)
2344 ADDQ $0x05, AX
2345 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2346
2347repeat_four_match_nolit_encodeBlockAsm4MB_emit_copy:
2348 LEAL -256(R9), R9
2349 MOVW $0x0019, (AX)
2350 MOVW R9, 2(AX)
2351 ADDQ $0x04, AX
2352 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2353
2354repeat_three_match_nolit_encodeBlockAsm4MB_emit_copy:
2355 LEAL -4(R9), R9
2356 MOVW $0x0015, (AX)
2357 MOVB R9, 2(AX)
2358 ADDQ $0x03, AX
2359 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2360
2361repeat_two_match_nolit_encodeBlockAsm4MB_emit_copy:
2362 SHLL $0x02, R9
2363 ORL $0x01, R9
2364 MOVW R9, (AX)
2365 ADDQ $0x02, AX
2366 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2367
2368repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy:
2369 XORQ SI, SI
2370 LEAL 1(SI)(R9*4), R9
2371 MOVB BL, 1(AX)
2372 SARL $0x08, BX
2373 SHLL $0x05, BX
2374 ORL BX, R9
2375 MOVB R9, (AX)
2376 ADDQ $0x02, AX
2377 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2378
2379four_bytes_remain_match_nolit_encodeBlockAsm4MB:
2380 TESTL R9, R9
2381 JZ match_nolit_emitcopy_end_encodeBlockAsm4MB
2382 XORL SI, SI
2383 LEAL -1(SI)(R9*4), R9
2384 MOVB R9, (AX)
2385 MOVL BX, 1(AX)
2386 ADDQ $0x05, AX
2387 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2388
2389two_byte_offset_match_nolit_encodeBlockAsm4MB:
2390 CMPL R9, $0x40
2391 JBE two_byte_offset_short_match_nolit_encodeBlockAsm4MB
2392 CMPL BX, $0x00000800
2393 JAE long_offset_short_match_nolit_encodeBlockAsm4MB
2394 MOVL $0x00000001, SI
2395 LEAL 16(SI), SI
2396 MOVB BL, 1(AX)
2397 SHRL $0x08, BX
2398 SHLL $0x05, BX
2399 ORL BX, SI
2400 MOVB SI, (AX)
2401 ADDQ $0x02, AX
2402 SUBL $0x08, R9
2403
2404 // emitRepeat
2405 LEAL -4(R9), R9
2406 JMP cant_repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b
2407 MOVL R9, SI
2408 LEAL -4(R9), R9
2409 CMPL SI, $0x08
2410 JBE repeat_two_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b
2411 CMPL SI, $0x0c
2412 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b
2413 CMPL BX, $0x00000800
2414 JB repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b
2415
2416cant_repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b:
2417 CMPL R9, $0x00000104
2418 JB repeat_three_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b
2419 CMPL R9, $0x00010100
2420 JB repeat_four_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b
2421 LEAL -65536(R9), R9
2422 MOVL R9, BX
2423 MOVW $0x001d, (AX)
2424 MOVW R9, 2(AX)
2425 SARL $0x10, BX
2426 MOVB BL, 4(AX)
2427 ADDQ $0x05, AX
2428 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2429
2430repeat_four_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b:
2431 LEAL -256(R9), R9
2432 MOVW $0x0019, (AX)
2433 MOVW R9, 2(AX)
2434 ADDQ $0x04, AX
2435 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2436
2437repeat_three_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b:
2438 LEAL -4(R9), R9
2439 MOVW $0x0015, (AX)
2440 MOVB R9, 2(AX)
2441 ADDQ $0x03, AX
2442 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2443
2444repeat_two_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b:
2445 SHLL $0x02, R9
2446 ORL $0x01, R9
2447 MOVW R9, (AX)
2448 ADDQ $0x02, AX
2449 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2450
2451repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short_2b:
2452 XORQ SI, SI
2453 LEAL 1(SI)(R9*4), R9
2454 MOVB BL, 1(AX)
2455 SARL $0x08, BX
2456 SHLL $0x05, BX
2457 ORL BX, R9
2458 MOVB R9, (AX)
2459 ADDQ $0x02, AX
2460 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2461
2462long_offset_short_match_nolit_encodeBlockAsm4MB:
2463 MOVB $0xee, (AX)
2464 MOVW BX, 1(AX)
2465 LEAL -60(R9), R9
2466 ADDQ $0x03, AX
2467
2468 // emitRepeat
2469 MOVL R9, SI
2470 LEAL -4(R9), R9
2471 CMPL SI, $0x08
2472 JBE repeat_two_match_nolit_encodeBlockAsm4MB_emit_copy_short
2473 CMPL SI, $0x0c
2474 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short
2475 CMPL BX, $0x00000800
2476 JB repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short
2477
2478cant_repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short:
2479 CMPL R9, $0x00000104
2480 JB repeat_three_match_nolit_encodeBlockAsm4MB_emit_copy_short
2481 CMPL R9, $0x00010100
2482 JB repeat_four_match_nolit_encodeBlockAsm4MB_emit_copy_short
2483 LEAL -65536(R9), R9
2484 MOVL R9, BX
2485 MOVW $0x001d, (AX)
2486 MOVW R9, 2(AX)
2487 SARL $0x10, BX
2488 MOVB BL, 4(AX)
2489 ADDQ $0x05, AX
2490 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2491
2492repeat_four_match_nolit_encodeBlockAsm4MB_emit_copy_short:
2493 LEAL -256(R9), R9
2494 MOVW $0x0019, (AX)
2495 MOVW R9, 2(AX)
2496 ADDQ $0x04, AX
2497 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2498
2499repeat_three_match_nolit_encodeBlockAsm4MB_emit_copy_short:
2500 LEAL -4(R9), R9
2501 MOVW $0x0015, (AX)
2502 MOVB R9, 2(AX)
2503 ADDQ $0x03, AX
2504 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2505
2506repeat_two_match_nolit_encodeBlockAsm4MB_emit_copy_short:
2507 SHLL $0x02, R9
2508 ORL $0x01, R9
2509 MOVW R9, (AX)
2510 ADDQ $0x02, AX
2511 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2512
2513repeat_two_offset_match_nolit_encodeBlockAsm4MB_emit_copy_short:
2514 XORQ SI, SI
2515 LEAL 1(SI)(R9*4), R9
2516 MOVB BL, 1(AX)
2517 SARL $0x08, BX
2518 SHLL $0x05, BX
2519 ORL BX, R9
2520 MOVB R9, (AX)
2521 ADDQ $0x02, AX
2522 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2523
2524two_byte_offset_short_match_nolit_encodeBlockAsm4MB:
2525 MOVL R9, SI
2526 SHLL $0x02, SI
2527 CMPL R9, $0x0c
2528 JAE emit_copy_three_match_nolit_encodeBlockAsm4MB
2529 CMPL BX, $0x00000800
2530 JAE emit_copy_three_match_nolit_encodeBlockAsm4MB
2531 LEAL -15(SI), SI
2532 MOVB BL, 1(AX)
2533 SHRL $0x08, BX
2534 SHLL $0x05, BX
2535 ORL BX, SI
2536 MOVB SI, (AX)
2537 ADDQ $0x02, AX
2538 JMP match_nolit_emitcopy_end_encodeBlockAsm4MB
2539
2540emit_copy_three_match_nolit_encodeBlockAsm4MB:
2541 LEAL -2(SI), SI
2542 MOVB SI, (AX)
2543 MOVW BX, 1(AX)
2544 ADDQ $0x03, AX
2545
2546match_nolit_emitcopy_end_encodeBlockAsm4MB:
2547 CMPL CX, 8(SP)
2548 JAE emit_remainder_encodeBlockAsm4MB
2549 MOVQ -2(DX)(CX*1), SI
2550 CMPQ AX, (SP)
2551 JB match_nolit_dst_ok_encodeBlockAsm4MB
2552 MOVQ $0x00000000, ret+48(FP)
2553 RET
2554
2555match_nolit_dst_ok_encodeBlockAsm4MB:
2556 MOVQ $0x0000cf1bbcdcbf9b, R8
2557 MOVQ SI, DI
2558 SHRQ $0x10, SI
2559 MOVQ SI, BX
2560 SHLQ $0x10, DI
2561 IMULQ R8, DI
2562 SHRQ $0x32, DI
2563 SHLQ $0x10, BX
2564 IMULQ R8, BX
2565 SHRQ $0x32, BX
2566 LEAL -2(CX), R8
2567 LEAQ 24(SP)(BX*4), R9
2568 MOVL (R9), BX
2569 MOVL R8, 24(SP)(DI*4)
2570 MOVL CX, (R9)
2571 CMPL (DX)(BX*1), SI
2572 JEQ match_nolit_loop_encodeBlockAsm4MB
2573 INCL CX
2574 JMP search_loop_encodeBlockAsm4MB
2575
2576emit_remainder_encodeBlockAsm4MB:
2577 MOVQ src_len+32(FP), CX
2578 SUBL 12(SP), CX
2579 LEAQ 4(AX)(CX*1), CX
2580 CMPQ CX, (SP)
2581 JB emit_remainder_ok_encodeBlockAsm4MB
2582 MOVQ $0x00000000, ret+48(FP)
2583 RET
2584
2585emit_remainder_ok_encodeBlockAsm4MB:
2586 MOVQ src_len+32(FP), CX
2587 MOVL 12(SP), BX
2588 CMPL BX, CX
2589 JEQ emit_literal_done_emit_remainder_encodeBlockAsm4MB
2590 MOVL CX, SI
2591 MOVL CX, 12(SP)
2592 LEAQ (DX)(BX*1), CX
2593 SUBL BX, SI
2594 LEAL -1(SI), DX
2595 CMPL DX, $0x3c
2596 JB one_byte_emit_remainder_encodeBlockAsm4MB
2597 CMPL DX, $0x00000100
2598 JB two_bytes_emit_remainder_encodeBlockAsm4MB
2599 CMPL DX, $0x00010000
2600 JB three_bytes_emit_remainder_encodeBlockAsm4MB
2601 MOVL DX, BX
2602 SHRL $0x10, BX
2603 MOVB $0xf8, (AX)
2604 MOVW DX, 1(AX)
2605 MOVB BL, 3(AX)
2606 ADDQ $0x04, AX
2607 JMP memmove_long_emit_remainder_encodeBlockAsm4MB
2608
2609three_bytes_emit_remainder_encodeBlockAsm4MB:
2610 MOVB $0xf4, (AX)
2611 MOVW DX, 1(AX)
2612 ADDQ $0x03, AX
2613 JMP memmove_long_emit_remainder_encodeBlockAsm4MB
2614
2615two_bytes_emit_remainder_encodeBlockAsm4MB:
2616 MOVB $0xf0, (AX)
2617 MOVB DL, 1(AX)
2618 ADDQ $0x02, AX
2619 CMPL DX, $0x40
2620 JB memmove_emit_remainder_encodeBlockAsm4MB
2621 JMP memmove_long_emit_remainder_encodeBlockAsm4MB
2622
2623one_byte_emit_remainder_encodeBlockAsm4MB:
2624 SHLB $0x02, DL
2625 MOVB DL, (AX)
2626 ADDQ $0x01, AX
2627
2628memmove_emit_remainder_encodeBlockAsm4MB:
2629 LEAQ (AX)(SI*1), DX
2630 MOVL SI, BX
2631
2632 // genMemMoveShort
2633 CMPQ BX, $0x03
2634 JB emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_1or2
2635 JE emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_3
2636 CMPQ BX, $0x08
2637 JB emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_4through7
2638 CMPQ BX, $0x10
2639 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_8through16
2640 CMPQ BX, $0x20
2641 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_17through32
2642 JMP emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_33through64
2643
2644emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_1or2:
2645 MOVB (CX), SI
2646 MOVB -1(CX)(BX*1), CL
2647 MOVB SI, (AX)
2648 MOVB CL, -1(AX)(BX*1)
2649 JMP memmove_end_copy_emit_remainder_encodeBlockAsm4MB
2650
2651emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_3:
2652 MOVW (CX), SI
2653 MOVB 2(CX), CL
2654 MOVW SI, (AX)
2655 MOVB CL, 2(AX)
2656 JMP memmove_end_copy_emit_remainder_encodeBlockAsm4MB
2657
2658emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_4through7:
2659 MOVL (CX), SI
2660 MOVL -4(CX)(BX*1), CX
2661 MOVL SI, (AX)
2662 MOVL CX, -4(AX)(BX*1)
2663 JMP memmove_end_copy_emit_remainder_encodeBlockAsm4MB
2664
2665emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_8through16:
2666 MOVQ (CX), SI
2667 MOVQ -8(CX)(BX*1), CX
2668 MOVQ SI, (AX)
2669 MOVQ CX, -8(AX)(BX*1)
2670 JMP memmove_end_copy_emit_remainder_encodeBlockAsm4MB
2671
2672emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_17through32:
2673 MOVOU (CX), X0
2674 MOVOU -16(CX)(BX*1), X1
2675 MOVOU X0, (AX)
2676 MOVOU X1, -16(AX)(BX*1)
2677 JMP memmove_end_copy_emit_remainder_encodeBlockAsm4MB
2678
2679emit_lit_memmove_emit_remainder_encodeBlockAsm4MB_memmove_move_33through64:
2680 MOVOU (CX), X0
2681 MOVOU 16(CX), X1
2682 MOVOU -32(CX)(BX*1), X2
2683 MOVOU -16(CX)(BX*1), X3
2684 MOVOU X0, (AX)
2685 MOVOU X1, 16(AX)
2686 MOVOU X2, -32(AX)(BX*1)
2687 MOVOU X3, -16(AX)(BX*1)
2688
2689memmove_end_copy_emit_remainder_encodeBlockAsm4MB:
2690 MOVQ DX, AX
2691 JMP emit_literal_done_emit_remainder_encodeBlockAsm4MB
2692
2693memmove_long_emit_remainder_encodeBlockAsm4MB:
2694 LEAQ (AX)(SI*1), DX
2695 MOVL SI, BX
2696
2697 // genMemMoveLong
2698 MOVOU (CX), X0
2699 MOVOU 16(CX), X1
2700 MOVOU -32(CX)(BX*1), X2
2701 MOVOU -16(CX)(BX*1), X3
2702 MOVQ BX, DI
2703 SHRQ $0x05, DI
2704 MOVQ AX, SI
2705 ANDL $0x0000001f, SI
2706 MOVQ $0x00000040, R8
2707 SUBQ SI, R8
2708 DECQ DI
2709 JA emit_lit_memmove_long_emit_remainder_encodeBlockAsm4MBlarge_forward_sse_loop_32
2710 LEAQ -32(CX)(R8*1), SI
2711 LEAQ -32(AX)(R8*1), R9
2712
2713emit_lit_memmove_long_emit_remainder_encodeBlockAsm4MBlarge_big_loop_back:
2714 MOVOU (SI), X4
2715 MOVOU 16(SI), X5
2716 MOVOA X4, (R9)
2717 MOVOA X5, 16(R9)
2718 ADDQ $0x20, R9
2719 ADDQ $0x20, SI
2720 ADDQ $0x20, R8
2721 DECQ DI
2722 JNA emit_lit_memmove_long_emit_remainder_encodeBlockAsm4MBlarge_big_loop_back
2723
2724emit_lit_memmove_long_emit_remainder_encodeBlockAsm4MBlarge_forward_sse_loop_32:
2725 MOVOU -32(CX)(R8*1), X4
2726 MOVOU -16(CX)(R8*1), X5
2727 MOVOA X4, -32(AX)(R8*1)
2728 MOVOA X5, -16(AX)(R8*1)
2729 ADDQ $0x20, R8
2730 CMPQ BX, R8
2731 JAE emit_lit_memmove_long_emit_remainder_encodeBlockAsm4MBlarge_forward_sse_loop_32
2732 MOVOU X0, (AX)
2733 MOVOU X1, 16(AX)
2734 MOVOU X2, -32(AX)(BX*1)
2735 MOVOU X3, -16(AX)(BX*1)
2736 MOVQ DX, AX
2737
2738emit_literal_done_emit_remainder_encodeBlockAsm4MB:
2739 MOVQ dst_base+0(FP), CX
2740 SUBQ CX, AX
2741 MOVQ AX, ret+48(FP)
2742 RET
2743
2744// func encodeBlockAsm12B(dst []byte, src []byte) int
2745// Requires: BMI, SSE2
2746TEXT ·encodeBlockAsm12B(SB), $16408-56
2747 MOVQ dst_base+0(FP), AX
2748 MOVQ $0x00000080, CX
2749 LEAQ 24(SP), DX
2750 PXOR X0, X0
2751
2752zero_loop_encodeBlockAsm12B:
2753 MOVOU X0, (DX)
2754 MOVOU X0, 16(DX)
2755 MOVOU X0, 32(DX)
2756 MOVOU X0, 48(DX)
2757 MOVOU X0, 64(DX)
2758 MOVOU X0, 80(DX)
2759 MOVOU X0, 96(DX)
2760 MOVOU X0, 112(DX)
2761 ADDQ $0x80, DX
2762 DECQ CX
2763 JNZ zero_loop_encodeBlockAsm12B
2764 MOVL $0x00000000, 12(SP)
2765 MOVQ src_len+32(FP), CX
2766 LEAQ -9(CX), DX
2767 LEAQ -8(CX), BX
2768 MOVL BX, 8(SP)
2769 SHRQ $0x05, CX
2770 SUBL CX, DX
2771 LEAQ (AX)(DX*1), DX
2772 MOVQ DX, (SP)
2773 MOVL $0x00000001, CX
2774 MOVL CX, 16(SP)
2775 MOVQ src_base+24(FP), DX
2776
2777search_loop_encodeBlockAsm12B:
2778 MOVL CX, BX
2779 SUBL 12(SP), BX
2780 SHRL $0x05, BX
2781 LEAL 4(CX)(BX*1), BX
2782 CMPL BX, 8(SP)
2783 JAE emit_remainder_encodeBlockAsm12B
2784 MOVQ (DX)(CX*1), SI
2785 MOVL BX, 20(SP)
2786 MOVQ $0x000000cf1bbcdcbb, R8
2787 MOVQ SI, R9
2788 MOVQ SI, R10
2789 SHRQ $0x08, R10
2790 SHLQ $0x18, R9
2791 IMULQ R8, R9
2792 SHRQ $0x34, R9
2793 SHLQ $0x18, R10
2794 IMULQ R8, R10
2795 SHRQ $0x34, R10
2796 MOVL 24(SP)(R9*4), BX
2797 MOVL 24(SP)(R10*4), DI
2798 MOVL CX, 24(SP)(R9*4)
2799 LEAL 1(CX), R9
2800 MOVL R9, 24(SP)(R10*4)
2801 MOVQ SI, R9
2802 SHRQ $0x10, R9
2803 SHLQ $0x18, R9
2804 IMULQ R8, R9
2805 SHRQ $0x34, R9
2806 MOVL CX, R8
2807 SUBL 16(SP), R8
2808 MOVL 1(DX)(R8*1), R10
2809 MOVQ SI, R8
2810 SHRQ $0x08, R8
2811 CMPL R8, R10
2812 JNE no_repeat_found_encodeBlockAsm12B
2813 LEAL 1(CX), SI
2814 MOVL 12(SP), DI
2815 MOVL SI, BX
2816 SUBL 16(SP), BX
2817 JZ repeat_extend_back_end_encodeBlockAsm12B
2818
2819repeat_extend_back_loop_encodeBlockAsm12B:
2820 CMPL SI, DI
2821 JBE repeat_extend_back_end_encodeBlockAsm12B
2822 MOVB -1(DX)(BX*1), R8
2823 MOVB -1(DX)(SI*1), R9
2824 CMPB R8, R9
2825 JNE repeat_extend_back_end_encodeBlockAsm12B
2826 LEAL -1(SI), SI
2827 DECL BX
2828 JNZ repeat_extend_back_loop_encodeBlockAsm12B
2829
2830repeat_extend_back_end_encodeBlockAsm12B:
2831 MOVL 12(SP), BX
2832 CMPL BX, SI
2833 JEQ emit_literal_done_repeat_emit_encodeBlockAsm12B
2834 MOVL SI, R8
2835 MOVL SI, 12(SP)
2836 LEAQ (DX)(BX*1), R9
2837 SUBL BX, R8
2838 LEAL -1(R8), BX
2839 CMPL BX, $0x3c
2840 JB one_byte_repeat_emit_encodeBlockAsm12B
2841 CMPL BX, $0x00000100
2842 JB two_bytes_repeat_emit_encodeBlockAsm12B
2843 JB three_bytes_repeat_emit_encodeBlockAsm12B
2844
2845three_bytes_repeat_emit_encodeBlockAsm12B:
2846 MOVB $0xf4, (AX)
2847 MOVW BX, 1(AX)
2848 ADDQ $0x03, AX
2849 JMP memmove_long_repeat_emit_encodeBlockAsm12B
2850
2851two_bytes_repeat_emit_encodeBlockAsm12B:
2852 MOVB $0xf0, (AX)
2853 MOVB BL, 1(AX)
2854 ADDQ $0x02, AX
2855 CMPL BX, $0x40
2856 JB memmove_repeat_emit_encodeBlockAsm12B
2857 JMP memmove_long_repeat_emit_encodeBlockAsm12B
2858
2859one_byte_repeat_emit_encodeBlockAsm12B:
2860 SHLB $0x02, BL
2861 MOVB BL, (AX)
2862 ADDQ $0x01, AX
2863
2864memmove_repeat_emit_encodeBlockAsm12B:
2865 LEAQ (AX)(R8*1), BX
2866
2867 // genMemMoveShort
2868 CMPQ R8, $0x08
2869 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_8
2870 CMPQ R8, $0x10
2871 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_8through16
2872 CMPQ R8, $0x20
2873 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_17through32
2874 JMP emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_33through64
2875
2876emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_8:
2877 MOVQ (R9), R10
2878 MOVQ R10, (AX)
2879 JMP memmove_end_copy_repeat_emit_encodeBlockAsm12B
2880
2881emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_8through16:
2882 MOVQ (R9), R10
2883 MOVQ -8(R9)(R8*1), R9
2884 MOVQ R10, (AX)
2885 MOVQ R9, -8(AX)(R8*1)
2886 JMP memmove_end_copy_repeat_emit_encodeBlockAsm12B
2887
2888emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_17through32:
2889 MOVOU (R9), X0
2890 MOVOU -16(R9)(R8*1), X1
2891 MOVOU X0, (AX)
2892 MOVOU X1, -16(AX)(R8*1)
2893 JMP memmove_end_copy_repeat_emit_encodeBlockAsm12B
2894
2895emit_lit_memmove_repeat_emit_encodeBlockAsm12B_memmove_move_33through64:
2896 MOVOU (R9), X0
2897 MOVOU 16(R9), X1
2898 MOVOU -32(R9)(R8*1), X2
2899 MOVOU -16(R9)(R8*1), X3
2900 MOVOU X0, (AX)
2901 MOVOU X1, 16(AX)
2902 MOVOU X2, -32(AX)(R8*1)
2903 MOVOU X3, -16(AX)(R8*1)
2904
2905memmove_end_copy_repeat_emit_encodeBlockAsm12B:
2906 MOVQ BX, AX
2907 JMP emit_literal_done_repeat_emit_encodeBlockAsm12B
2908
2909memmove_long_repeat_emit_encodeBlockAsm12B:
2910 LEAQ (AX)(R8*1), BX
2911
2912 // genMemMoveLong
2913 MOVOU (R9), X0
2914 MOVOU 16(R9), X1
2915 MOVOU -32(R9)(R8*1), X2
2916 MOVOU -16(R9)(R8*1), X3
2917 MOVQ R8, R11
2918 SHRQ $0x05, R11
2919 MOVQ AX, R10
2920 ANDL $0x0000001f, R10
2921 MOVQ $0x00000040, R12
2922 SUBQ R10, R12
2923 DECQ R11
2924 JA emit_lit_memmove_long_repeat_emit_encodeBlockAsm12Blarge_forward_sse_loop_32
2925 LEAQ -32(R9)(R12*1), R10
2926 LEAQ -32(AX)(R12*1), R13
2927
2928emit_lit_memmove_long_repeat_emit_encodeBlockAsm12Blarge_big_loop_back:
2929 MOVOU (R10), X4
2930 MOVOU 16(R10), X5
2931 MOVOA X4, (R13)
2932 MOVOA X5, 16(R13)
2933 ADDQ $0x20, R13
2934 ADDQ $0x20, R10
2935 ADDQ $0x20, R12
2936 DECQ R11
2937 JNA emit_lit_memmove_long_repeat_emit_encodeBlockAsm12Blarge_big_loop_back
2938
2939emit_lit_memmove_long_repeat_emit_encodeBlockAsm12Blarge_forward_sse_loop_32:
2940 MOVOU -32(R9)(R12*1), X4
2941 MOVOU -16(R9)(R12*1), X5
2942 MOVOA X4, -32(AX)(R12*1)
2943 MOVOA X5, -16(AX)(R12*1)
2944 ADDQ $0x20, R12
2945 CMPQ R8, R12
2946 JAE emit_lit_memmove_long_repeat_emit_encodeBlockAsm12Blarge_forward_sse_loop_32
2947 MOVOU X0, (AX)
2948 MOVOU X1, 16(AX)
2949 MOVOU X2, -32(AX)(R8*1)
2950 MOVOU X3, -16(AX)(R8*1)
2951 MOVQ BX, AX
2952
2953emit_literal_done_repeat_emit_encodeBlockAsm12B:
2954 ADDL $0x05, CX
2955 MOVL CX, BX
2956 SUBL 16(SP), BX
2957 MOVQ src_len+32(FP), R8
2958 SUBL CX, R8
2959 LEAQ (DX)(CX*1), R9
2960 LEAQ (DX)(BX*1), BX
2961
2962 // matchLen
2963 XORL R11, R11
2964
2965matchlen_loopback_16_repeat_extend_encodeBlockAsm12B:
2966 CMPL R8, $0x10
2967 JB matchlen_match8_repeat_extend_encodeBlockAsm12B
2968 MOVQ (R9)(R11*1), R10
2969 MOVQ 8(R9)(R11*1), R12
2970 XORQ (BX)(R11*1), R10
2971 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm12B
2972 XORQ 8(BX)(R11*1), R12
2973 JNZ matchlen_bsf_16repeat_extend_encodeBlockAsm12B
2974 LEAL -16(R8), R8
2975 LEAL 16(R11), R11
2976 JMP matchlen_loopback_16_repeat_extend_encodeBlockAsm12B
2977
2978matchlen_bsf_16repeat_extend_encodeBlockAsm12B:
2979#ifdef GOAMD64_v3
2980 TZCNTQ R12, R12
2981
2982#else
2983 BSFQ R12, R12
2984
2985#endif
2986 SARQ $0x03, R12
2987 LEAL 8(R11)(R12*1), R11
2988 JMP repeat_extend_forward_end_encodeBlockAsm12B
2989
2990matchlen_match8_repeat_extend_encodeBlockAsm12B:
2991 CMPL R8, $0x08
2992 JB matchlen_match4_repeat_extend_encodeBlockAsm12B
2993 MOVQ (R9)(R11*1), R10
2994 XORQ (BX)(R11*1), R10
2995 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm12B
2996 LEAL -8(R8), R8
2997 LEAL 8(R11), R11
2998 JMP matchlen_match4_repeat_extend_encodeBlockAsm12B
2999
3000matchlen_bsf_8_repeat_extend_encodeBlockAsm12B:
3001#ifdef GOAMD64_v3
3002 TZCNTQ R10, R10
3003
3004#else
3005 BSFQ R10, R10
3006
3007#endif
3008 SARQ $0x03, R10
3009 LEAL (R11)(R10*1), R11
3010 JMP repeat_extend_forward_end_encodeBlockAsm12B
3011
3012matchlen_match4_repeat_extend_encodeBlockAsm12B:
3013 CMPL R8, $0x04
3014 JB matchlen_match2_repeat_extend_encodeBlockAsm12B
3015 MOVL (R9)(R11*1), R10
3016 CMPL (BX)(R11*1), R10
3017 JNE matchlen_match2_repeat_extend_encodeBlockAsm12B
3018 LEAL -4(R8), R8
3019 LEAL 4(R11), R11
3020
3021matchlen_match2_repeat_extend_encodeBlockAsm12B:
3022 CMPL R8, $0x01
3023 JE matchlen_match1_repeat_extend_encodeBlockAsm12B
3024 JB repeat_extend_forward_end_encodeBlockAsm12B
3025 MOVW (R9)(R11*1), R10
3026 CMPW (BX)(R11*1), R10
3027 JNE matchlen_match1_repeat_extend_encodeBlockAsm12B
3028 LEAL 2(R11), R11
3029 SUBL $0x02, R8
3030 JZ repeat_extend_forward_end_encodeBlockAsm12B
3031
3032matchlen_match1_repeat_extend_encodeBlockAsm12B:
3033 MOVB (R9)(R11*1), R10
3034 CMPB (BX)(R11*1), R10
3035 JNE repeat_extend_forward_end_encodeBlockAsm12B
3036 LEAL 1(R11), R11
3037
3038repeat_extend_forward_end_encodeBlockAsm12B:
3039 ADDL R11, CX
3040 MOVL CX, BX
3041 SUBL SI, BX
3042 MOVL 16(SP), SI
3043 TESTL DI, DI
3044 JZ repeat_as_copy_encodeBlockAsm12B
3045
3046 // emitRepeat
3047 MOVL BX, DI
3048 LEAL -4(BX), BX
3049 CMPL DI, $0x08
3050 JBE repeat_two_match_repeat_encodeBlockAsm12B
3051 CMPL DI, $0x0c
3052 JAE cant_repeat_two_offset_match_repeat_encodeBlockAsm12B
3053 CMPL SI, $0x00000800
3054 JB repeat_two_offset_match_repeat_encodeBlockAsm12B
3055
3056cant_repeat_two_offset_match_repeat_encodeBlockAsm12B:
3057 CMPL BX, $0x00000104
3058 JB repeat_three_match_repeat_encodeBlockAsm12B
3059 LEAL -256(BX), BX
3060 MOVW $0x0019, (AX)
3061 MOVW BX, 2(AX)
3062 ADDQ $0x04, AX
3063 JMP repeat_end_emit_encodeBlockAsm12B
3064
3065repeat_three_match_repeat_encodeBlockAsm12B:
3066 LEAL -4(BX), BX
3067 MOVW $0x0015, (AX)
3068 MOVB BL, 2(AX)
3069 ADDQ $0x03, AX
3070 JMP repeat_end_emit_encodeBlockAsm12B
3071
3072repeat_two_match_repeat_encodeBlockAsm12B:
3073 SHLL $0x02, BX
3074 ORL $0x01, BX
3075 MOVW BX, (AX)
3076 ADDQ $0x02, AX
3077 JMP repeat_end_emit_encodeBlockAsm12B
3078
3079repeat_two_offset_match_repeat_encodeBlockAsm12B:
3080 XORQ DI, DI
3081 LEAL 1(DI)(BX*4), BX
3082 MOVB SI, 1(AX)
3083 SARL $0x08, SI
3084 SHLL $0x05, SI
3085 ORL SI, BX
3086 MOVB BL, (AX)
3087 ADDQ $0x02, AX
3088 JMP repeat_end_emit_encodeBlockAsm12B
3089
3090repeat_as_copy_encodeBlockAsm12B:
3091 // emitCopy
3092 CMPL BX, $0x40
3093 JBE two_byte_offset_short_repeat_as_copy_encodeBlockAsm12B
3094 CMPL SI, $0x00000800
3095 JAE long_offset_short_repeat_as_copy_encodeBlockAsm12B
3096 MOVL $0x00000001, DI
3097 LEAL 16(DI), DI
3098 MOVB SI, 1(AX)
3099 SHRL $0x08, SI
3100 SHLL $0x05, SI
3101 ORL SI, DI
3102 MOVB DI, (AX)
3103 ADDQ $0x02, AX
3104 SUBL $0x08, BX
3105
3106 // emitRepeat
3107 LEAL -4(BX), BX
3108 JMP cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b
3109 MOVL BX, DI
3110 LEAL -4(BX), BX
3111 CMPL DI, $0x08
3112 JBE repeat_two_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b
3113 CMPL DI, $0x0c
3114 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b
3115 CMPL SI, $0x00000800
3116 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b
3117
3118cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b:
3119 CMPL BX, $0x00000104
3120 JB repeat_three_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b
3121 LEAL -256(BX), BX
3122 MOVW $0x0019, (AX)
3123 MOVW BX, 2(AX)
3124 ADDQ $0x04, AX
3125 JMP repeat_end_emit_encodeBlockAsm12B
3126
3127repeat_three_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b:
3128 LEAL -4(BX), BX
3129 MOVW $0x0015, (AX)
3130 MOVB BL, 2(AX)
3131 ADDQ $0x03, AX
3132 JMP repeat_end_emit_encodeBlockAsm12B
3133
3134repeat_two_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b:
3135 SHLL $0x02, BX
3136 ORL $0x01, BX
3137 MOVW BX, (AX)
3138 ADDQ $0x02, AX
3139 JMP repeat_end_emit_encodeBlockAsm12B
3140
3141repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short_2b:
3142 XORQ DI, DI
3143 LEAL 1(DI)(BX*4), BX
3144 MOVB SI, 1(AX)
3145 SARL $0x08, SI
3146 SHLL $0x05, SI
3147 ORL SI, BX
3148 MOVB BL, (AX)
3149 ADDQ $0x02, AX
3150 JMP repeat_end_emit_encodeBlockAsm12B
3151
3152long_offset_short_repeat_as_copy_encodeBlockAsm12B:
3153 MOVB $0xee, (AX)
3154 MOVW SI, 1(AX)
3155 LEAL -60(BX), BX
3156 ADDQ $0x03, AX
3157
3158 // emitRepeat
3159 MOVL BX, DI
3160 LEAL -4(BX), BX
3161 CMPL DI, $0x08
3162 JBE repeat_two_repeat_as_copy_encodeBlockAsm12B_emit_copy_short
3163 CMPL DI, $0x0c
3164 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short
3165 CMPL SI, $0x00000800
3166 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short
3167
3168cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short:
3169 CMPL BX, $0x00000104
3170 JB repeat_three_repeat_as_copy_encodeBlockAsm12B_emit_copy_short
3171 LEAL -256(BX), BX
3172 MOVW $0x0019, (AX)
3173 MOVW BX, 2(AX)
3174 ADDQ $0x04, AX
3175 JMP repeat_end_emit_encodeBlockAsm12B
3176
3177repeat_three_repeat_as_copy_encodeBlockAsm12B_emit_copy_short:
3178 LEAL -4(BX), BX
3179 MOVW $0x0015, (AX)
3180 MOVB BL, 2(AX)
3181 ADDQ $0x03, AX
3182 JMP repeat_end_emit_encodeBlockAsm12B
3183
3184repeat_two_repeat_as_copy_encodeBlockAsm12B_emit_copy_short:
3185 SHLL $0x02, BX
3186 ORL $0x01, BX
3187 MOVW BX, (AX)
3188 ADDQ $0x02, AX
3189 JMP repeat_end_emit_encodeBlockAsm12B
3190
3191repeat_two_offset_repeat_as_copy_encodeBlockAsm12B_emit_copy_short:
3192 XORQ DI, DI
3193 LEAL 1(DI)(BX*4), BX
3194 MOVB SI, 1(AX)
3195 SARL $0x08, SI
3196 SHLL $0x05, SI
3197 ORL SI, BX
3198 MOVB BL, (AX)
3199 ADDQ $0x02, AX
3200 JMP repeat_end_emit_encodeBlockAsm12B
3201
3202two_byte_offset_short_repeat_as_copy_encodeBlockAsm12B:
3203 MOVL BX, DI
3204 SHLL $0x02, DI
3205 CMPL BX, $0x0c
3206 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm12B
3207 CMPL SI, $0x00000800
3208 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm12B
3209 LEAL -15(DI), DI
3210 MOVB SI, 1(AX)
3211 SHRL $0x08, SI
3212 SHLL $0x05, SI
3213 ORL SI, DI
3214 MOVB DI, (AX)
3215 ADDQ $0x02, AX
3216 JMP repeat_end_emit_encodeBlockAsm12B
3217
3218emit_copy_three_repeat_as_copy_encodeBlockAsm12B:
3219 LEAL -2(DI), DI
3220 MOVB DI, (AX)
3221 MOVW SI, 1(AX)
3222 ADDQ $0x03, AX
3223
3224repeat_end_emit_encodeBlockAsm12B:
3225 MOVL CX, 12(SP)
3226 JMP search_loop_encodeBlockAsm12B
3227
3228no_repeat_found_encodeBlockAsm12B:
3229 CMPL (DX)(BX*1), SI
3230 JEQ candidate_match_encodeBlockAsm12B
3231 SHRQ $0x08, SI
3232 MOVL 24(SP)(R9*4), BX
3233 LEAL 2(CX), R8
3234 CMPL (DX)(DI*1), SI
3235 JEQ candidate2_match_encodeBlockAsm12B
3236 MOVL R8, 24(SP)(R9*4)
3237 SHRQ $0x08, SI
3238 CMPL (DX)(BX*1), SI
3239 JEQ candidate3_match_encodeBlockAsm12B
3240 MOVL 20(SP), CX
3241 JMP search_loop_encodeBlockAsm12B
3242
3243candidate3_match_encodeBlockAsm12B:
3244 ADDL $0x02, CX
3245 JMP candidate_match_encodeBlockAsm12B
3246
3247candidate2_match_encodeBlockAsm12B:
3248 MOVL R8, 24(SP)(R9*4)
3249 INCL CX
3250 MOVL DI, BX
3251
3252candidate_match_encodeBlockAsm12B:
3253 MOVL 12(SP), SI
3254 TESTL BX, BX
3255 JZ match_extend_back_end_encodeBlockAsm12B
3256
3257match_extend_back_loop_encodeBlockAsm12B:
3258 CMPL CX, SI
3259 JBE match_extend_back_end_encodeBlockAsm12B
3260 MOVB -1(DX)(BX*1), DI
3261 MOVB -1(DX)(CX*1), R8
3262 CMPB DI, R8
3263 JNE match_extend_back_end_encodeBlockAsm12B
3264 LEAL -1(CX), CX
3265 DECL BX
3266 JZ match_extend_back_end_encodeBlockAsm12B
3267 JMP match_extend_back_loop_encodeBlockAsm12B
3268
3269match_extend_back_end_encodeBlockAsm12B:
3270 MOVL CX, SI
3271 SUBL 12(SP), SI
3272 LEAQ 3(AX)(SI*1), SI
3273 CMPQ SI, (SP)
3274 JB match_dst_size_check_encodeBlockAsm12B
3275 MOVQ $0x00000000, ret+48(FP)
3276 RET
3277
3278match_dst_size_check_encodeBlockAsm12B:
3279 MOVL CX, SI
3280 MOVL 12(SP), DI
3281 CMPL DI, SI
3282 JEQ emit_literal_done_match_emit_encodeBlockAsm12B
3283 MOVL SI, R8
3284 MOVL SI, 12(SP)
3285 LEAQ (DX)(DI*1), SI
3286 SUBL DI, R8
3287 LEAL -1(R8), DI
3288 CMPL DI, $0x3c
3289 JB one_byte_match_emit_encodeBlockAsm12B
3290 CMPL DI, $0x00000100
3291 JB two_bytes_match_emit_encodeBlockAsm12B
3292 JB three_bytes_match_emit_encodeBlockAsm12B
3293
3294three_bytes_match_emit_encodeBlockAsm12B:
3295 MOVB $0xf4, (AX)
3296 MOVW DI, 1(AX)
3297 ADDQ $0x03, AX
3298 JMP memmove_long_match_emit_encodeBlockAsm12B
3299
3300two_bytes_match_emit_encodeBlockAsm12B:
3301 MOVB $0xf0, (AX)
3302 MOVB DI, 1(AX)
3303 ADDQ $0x02, AX
3304 CMPL DI, $0x40
3305 JB memmove_match_emit_encodeBlockAsm12B
3306 JMP memmove_long_match_emit_encodeBlockAsm12B
3307
3308one_byte_match_emit_encodeBlockAsm12B:
3309 SHLB $0x02, DI
3310 MOVB DI, (AX)
3311 ADDQ $0x01, AX
3312
3313memmove_match_emit_encodeBlockAsm12B:
3314 LEAQ (AX)(R8*1), DI
3315
3316 // genMemMoveShort
3317 CMPQ R8, $0x08
3318 JBE emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_8
3319 CMPQ R8, $0x10
3320 JBE emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_8through16
3321 CMPQ R8, $0x20
3322 JBE emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_17through32
3323 JMP emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_33through64
3324
3325emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_8:
3326 MOVQ (SI), R9
3327 MOVQ R9, (AX)
3328 JMP memmove_end_copy_match_emit_encodeBlockAsm12B
3329
3330emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_8through16:
3331 MOVQ (SI), R9
3332 MOVQ -8(SI)(R8*1), SI
3333 MOVQ R9, (AX)
3334 MOVQ SI, -8(AX)(R8*1)
3335 JMP memmove_end_copy_match_emit_encodeBlockAsm12B
3336
3337emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_17through32:
3338 MOVOU (SI), X0
3339 MOVOU -16(SI)(R8*1), X1
3340 MOVOU X0, (AX)
3341 MOVOU X1, -16(AX)(R8*1)
3342 JMP memmove_end_copy_match_emit_encodeBlockAsm12B
3343
3344emit_lit_memmove_match_emit_encodeBlockAsm12B_memmove_move_33through64:
3345 MOVOU (SI), X0
3346 MOVOU 16(SI), X1
3347 MOVOU -32(SI)(R8*1), X2
3348 MOVOU -16(SI)(R8*1), X3
3349 MOVOU X0, (AX)
3350 MOVOU X1, 16(AX)
3351 MOVOU X2, -32(AX)(R8*1)
3352 MOVOU X3, -16(AX)(R8*1)
3353
3354memmove_end_copy_match_emit_encodeBlockAsm12B:
3355 MOVQ DI, AX
3356 JMP emit_literal_done_match_emit_encodeBlockAsm12B
3357
3358memmove_long_match_emit_encodeBlockAsm12B:
3359 LEAQ (AX)(R8*1), DI
3360
3361 // genMemMoveLong
3362 MOVOU (SI), X0
3363 MOVOU 16(SI), X1
3364 MOVOU -32(SI)(R8*1), X2
3365 MOVOU -16(SI)(R8*1), X3
3366 MOVQ R8, R10
3367 SHRQ $0x05, R10
3368 MOVQ AX, R9
3369 ANDL $0x0000001f, R9
3370 MOVQ $0x00000040, R11
3371 SUBQ R9, R11
3372 DECQ R10
3373 JA emit_lit_memmove_long_match_emit_encodeBlockAsm12Blarge_forward_sse_loop_32
3374 LEAQ -32(SI)(R11*1), R9
3375 LEAQ -32(AX)(R11*1), R12
3376
3377emit_lit_memmove_long_match_emit_encodeBlockAsm12Blarge_big_loop_back:
3378 MOVOU (R9), X4
3379 MOVOU 16(R9), X5
3380 MOVOA X4, (R12)
3381 MOVOA X5, 16(R12)
3382 ADDQ $0x20, R12
3383 ADDQ $0x20, R9
3384 ADDQ $0x20, R11
3385 DECQ R10
3386 JNA emit_lit_memmove_long_match_emit_encodeBlockAsm12Blarge_big_loop_back
3387
3388emit_lit_memmove_long_match_emit_encodeBlockAsm12Blarge_forward_sse_loop_32:
3389 MOVOU -32(SI)(R11*1), X4
3390 MOVOU -16(SI)(R11*1), X5
3391 MOVOA X4, -32(AX)(R11*1)
3392 MOVOA X5, -16(AX)(R11*1)
3393 ADDQ $0x20, R11
3394 CMPQ R8, R11
3395 JAE emit_lit_memmove_long_match_emit_encodeBlockAsm12Blarge_forward_sse_loop_32
3396 MOVOU X0, (AX)
3397 MOVOU X1, 16(AX)
3398 MOVOU X2, -32(AX)(R8*1)
3399 MOVOU X3, -16(AX)(R8*1)
3400 MOVQ DI, AX
3401
3402emit_literal_done_match_emit_encodeBlockAsm12B:
3403match_nolit_loop_encodeBlockAsm12B:
3404 MOVL CX, SI
3405 SUBL BX, SI
3406 MOVL SI, 16(SP)
3407 ADDL $0x04, CX
3408 ADDL $0x04, BX
3409 MOVQ src_len+32(FP), SI
3410 SUBL CX, SI
3411 LEAQ (DX)(CX*1), DI
3412 LEAQ (DX)(BX*1), BX
3413
3414 // matchLen
3415 XORL R9, R9
3416
3417matchlen_loopback_16_match_nolit_encodeBlockAsm12B:
3418 CMPL SI, $0x10
3419 JB matchlen_match8_match_nolit_encodeBlockAsm12B
3420 MOVQ (DI)(R9*1), R8
3421 MOVQ 8(DI)(R9*1), R10
3422 XORQ (BX)(R9*1), R8
3423 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm12B
3424 XORQ 8(BX)(R9*1), R10
3425 JNZ matchlen_bsf_16match_nolit_encodeBlockAsm12B
3426 LEAL -16(SI), SI
3427 LEAL 16(R9), R9
3428 JMP matchlen_loopback_16_match_nolit_encodeBlockAsm12B
3429
3430matchlen_bsf_16match_nolit_encodeBlockAsm12B:
3431#ifdef GOAMD64_v3
3432 TZCNTQ R10, R10
3433
3434#else
3435 BSFQ R10, R10
3436
3437#endif
3438 SARQ $0x03, R10
3439 LEAL 8(R9)(R10*1), R9
3440 JMP match_nolit_end_encodeBlockAsm12B
3441
3442matchlen_match8_match_nolit_encodeBlockAsm12B:
3443 CMPL SI, $0x08
3444 JB matchlen_match4_match_nolit_encodeBlockAsm12B
3445 MOVQ (DI)(R9*1), R8
3446 XORQ (BX)(R9*1), R8
3447 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm12B
3448 LEAL -8(SI), SI
3449 LEAL 8(R9), R9
3450 JMP matchlen_match4_match_nolit_encodeBlockAsm12B
3451
3452matchlen_bsf_8_match_nolit_encodeBlockAsm12B:
3453#ifdef GOAMD64_v3
3454 TZCNTQ R8, R8
3455
3456#else
3457 BSFQ R8, R8
3458
3459#endif
3460 SARQ $0x03, R8
3461 LEAL (R9)(R8*1), R9
3462 JMP match_nolit_end_encodeBlockAsm12B
3463
3464matchlen_match4_match_nolit_encodeBlockAsm12B:
3465 CMPL SI, $0x04
3466 JB matchlen_match2_match_nolit_encodeBlockAsm12B
3467 MOVL (DI)(R9*1), R8
3468 CMPL (BX)(R9*1), R8
3469 JNE matchlen_match2_match_nolit_encodeBlockAsm12B
3470 LEAL -4(SI), SI
3471 LEAL 4(R9), R9
3472
3473matchlen_match2_match_nolit_encodeBlockAsm12B:
3474 CMPL SI, $0x01
3475 JE matchlen_match1_match_nolit_encodeBlockAsm12B
3476 JB match_nolit_end_encodeBlockAsm12B
3477 MOVW (DI)(R9*1), R8
3478 CMPW (BX)(R9*1), R8
3479 JNE matchlen_match1_match_nolit_encodeBlockAsm12B
3480 LEAL 2(R9), R9
3481 SUBL $0x02, SI
3482 JZ match_nolit_end_encodeBlockAsm12B
3483
3484matchlen_match1_match_nolit_encodeBlockAsm12B:
3485 MOVB (DI)(R9*1), R8
3486 CMPB (BX)(R9*1), R8
3487 JNE match_nolit_end_encodeBlockAsm12B
3488 LEAL 1(R9), R9
3489
3490match_nolit_end_encodeBlockAsm12B:
3491 ADDL R9, CX
3492 MOVL 16(SP), BX
3493 ADDL $0x04, R9
3494 MOVL CX, 12(SP)
3495
3496 // emitCopy
3497 CMPL R9, $0x40
3498 JBE two_byte_offset_short_match_nolit_encodeBlockAsm12B
3499 CMPL BX, $0x00000800
3500 JAE long_offset_short_match_nolit_encodeBlockAsm12B
3501 MOVL $0x00000001, SI
3502 LEAL 16(SI), SI
3503 MOVB BL, 1(AX)
3504 SHRL $0x08, BX
3505 SHLL $0x05, BX
3506 ORL BX, SI
3507 MOVB SI, (AX)
3508 ADDQ $0x02, AX
3509 SUBL $0x08, R9
3510
3511 // emitRepeat
3512 LEAL -4(R9), R9
3513 JMP cant_repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short_2b
3514 MOVL R9, SI
3515 LEAL -4(R9), R9
3516 CMPL SI, $0x08
3517 JBE repeat_two_match_nolit_encodeBlockAsm12B_emit_copy_short_2b
3518 CMPL SI, $0x0c
3519 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short_2b
3520 CMPL BX, $0x00000800
3521 JB repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short_2b
3522
3523cant_repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short_2b:
3524 CMPL R9, $0x00000104
3525 JB repeat_three_match_nolit_encodeBlockAsm12B_emit_copy_short_2b
3526 LEAL -256(R9), R9
3527 MOVW $0x0019, (AX)
3528 MOVW R9, 2(AX)
3529 ADDQ $0x04, AX
3530 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3531
3532repeat_three_match_nolit_encodeBlockAsm12B_emit_copy_short_2b:
3533 LEAL -4(R9), R9
3534 MOVW $0x0015, (AX)
3535 MOVB R9, 2(AX)
3536 ADDQ $0x03, AX
3537 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3538
3539repeat_two_match_nolit_encodeBlockAsm12B_emit_copy_short_2b:
3540 SHLL $0x02, R9
3541 ORL $0x01, R9
3542 MOVW R9, (AX)
3543 ADDQ $0x02, AX
3544 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3545
3546repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short_2b:
3547 XORQ SI, SI
3548 LEAL 1(SI)(R9*4), R9
3549 MOVB BL, 1(AX)
3550 SARL $0x08, BX
3551 SHLL $0x05, BX
3552 ORL BX, R9
3553 MOVB R9, (AX)
3554 ADDQ $0x02, AX
3555 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3556
3557long_offset_short_match_nolit_encodeBlockAsm12B:
3558 MOVB $0xee, (AX)
3559 MOVW BX, 1(AX)
3560 LEAL -60(R9), R9
3561 ADDQ $0x03, AX
3562
3563 // emitRepeat
3564 MOVL R9, SI
3565 LEAL -4(R9), R9
3566 CMPL SI, $0x08
3567 JBE repeat_two_match_nolit_encodeBlockAsm12B_emit_copy_short
3568 CMPL SI, $0x0c
3569 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short
3570 CMPL BX, $0x00000800
3571 JB repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short
3572
3573cant_repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short:
3574 CMPL R9, $0x00000104
3575 JB repeat_three_match_nolit_encodeBlockAsm12B_emit_copy_short
3576 LEAL -256(R9), R9
3577 MOVW $0x0019, (AX)
3578 MOVW R9, 2(AX)
3579 ADDQ $0x04, AX
3580 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3581
3582repeat_three_match_nolit_encodeBlockAsm12B_emit_copy_short:
3583 LEAL -4(R9), R9
3584 MOVW $0x0015, (AX)
3585 MOVB R9, 2(AX)
3586 ADDQ $0x03, AX
3587 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3588
3589repeat_two_match_nolit_encodeBlockAsm12B_emit_copy_short:
3590 SHLL $0x02, R9
3591 ORL $0x01, R9
3592 MOVW R9, (AX)
3593 ADDQ $0x02, AX
3594 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3595
3596repeat_two_offset_match_nolit_encodeBlockAsm12B_emit_copy_short:
3597 XORQ SI, SI
3598 LEAL 1(SI)(R9*4), R9
3599 MOVB BL, 1(AX)
3600 SARL $0x08, BX
3601 SHLL $0x05, BX
3602 ORL BX, R9
3603 MOVB R9, (AX)
3604 ADDQ $0x02, AX
3605 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3606
3607two_byte_offset_short_match_nolit_encodeBlockAsm12B:
3608 MOVL R9, SI
3609 SHLL $0x02, SI
3610 CMPL R9, $0x0c
3611 JAE emit_copy_three_match_nolit_encodeBlockAsm12B
3612 CMPL BX, $0x00000800
3613 JAE emit_copy_three_match_nolit_encodeBlockAsm12B
3614 LEAL -15(SI), SI
3615 MOVB BL, 1(AX)
3616 SHRL $0x08, BX
3617 SHLL $0x05, BX
3618 ORL BX, SI
3619 MOVB SI, (AX)
3620 ADDQ $0x02, AX
3621 JMP match_nolit_emitcopy_end_encodeBlockAsm12B
3622
3623emit_copy_three_match_nolit_encodeBlockAsm12B:
3624 LEAL -2(SI), SI
3625 MOVB SI, (AX)
3626 MOVW BX, 1(AX)
3627 ADDQ $0x03, AX
3628
3629match_nolit_emitcopy_end_encodeBlockAsm12B:
3630 CMPL CX, 8(SP)
3631 JAE emit_remainder_encodeBlockAsm12B
3632 MOVQ -2(DX)(CX*1), SI
3633 CMPQ AX, (SP)
3634 JB match_nolit_dst_ok_encodeBlockAsm12B
3635 MOVQ $0x00000000, ret+48(FP)
3636 RET
3637
3638match_nolit_dst_ok_encodeBlockAsm12B:
3639 MOVQ $0x000000cf1bbcdcbb, R8
3640 MOVQ SI, DI
3641 SHRQ $0x10, SI
3642 MOVQ SI, BX
3643 SHLQ $0x18, DI
3644 IMULQ R8, DI
3645 SHRQ $0x34, DI
3646 SHLQ $0x18, BX
3647 IMULQ R8, BX
3648 SHRQ $0x34, BX
3649 LEAL -2(CX), R8
3650 LEAQ 24(SP)(BX*4), R9
3651 MOVL (R9), BX
3652 MOVL R8, 24(SP)(DI*4)
3653 MOVL CX, (R9)
3654 CMPL (DX)(BX*1), SI
3655 JEQ match_nolit_loop_encodeBlockAsm12B
3656 INCL CX
3657 JMP search_loop_encodeBlockAsm12B
3658
3659emit_remainder_encodeBlockAsm12B:
3660 MOVQ src_len+32(FP), CX
3661 SUBL 12(SP), CX
3662 LEAQ 3(AX)(CX*1), CX
3663 CMPQ CX, (SP)
3664 JB emit_remainder_ok_encodeBlockAsm12B
3665 MOVQ $0x00000000, ret+48(FP)
3666 RET
3667
3668emit_remainder_ok_encodeBlockAsm12B:
3669 MOVQ src_len+32(FP), CX
3670 MOVL 12(SP), BX
3671 CMPL BX, CX
3672 JEQ emit_literal_done_emit_remainder_encodeBlockAsm12B
3673 MOVL CX, SI
3674 MOVL CX, 12(SP)
3675 LEAQ (DX)(BX*1), CX
3676 SUBL BX, SI
3677 LEAL -1(SI), DX
3678 CMPL DX, $0x3c
3679 JB one_byte_emit_remainder_encodeBlockAsm12B
3680 CMPL DX, $0x00000100
3681 JB two_bytes_emit_remainder_encodeBlockAsm12B
3682 JB three_bytes_emit_remainder_encodeBlockAsm12B
3683
3684three_bytes_emit_remainder_encodeBlockAsm12B:
3685 MOVB $0xf4, (AX)
3686 MOVW DX, 1(AX)
3687 ADDQ $0x03, AX
3688 JMP memmove_long_emit_remainder_encodeBlockAsm12B
3689
3690two_bytes_emit_remainder_encodeBlockAsm12B:
3691 MOVB $0xf0, (AX)
3692 MOVB DL, 1(AX)
3693 ADDQ $0x02, AX
3694 CMPL DX, $0x40
3695 JB memmove_emit_remainder_encodeBlockAsm12B
3696 JMP memmove_long_emit_remainder_encodeBlockAsm12B
3697
3698one_byte_emit_remainder_encodeBlockAsm12B:
3699 SHLB $0x02, DL
3700 MOVB DL, (AX)
3701 ADDQ $0x01, AX
3702
3703memmove_emit_remainder_encodeBlockAsm12B:
3704 LEAQ (AX)(SI*1), DX
3705 MOVL SI, BX
3706
3707 // genMemMoveShort
3708 CMPQ BX, $0x03
3709 JB emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_1or2
3710 JE emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_3
3711 CMPQ BX, $0x08
3712 JB emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_4through7
3713 CMPQ BX, $0x10
3714 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_8through16
3715 CMPQ BX, $0x20
3716 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_17through32
3717 JMP emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_33through64
3718
3719emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_1or2:
3720 MOVB (CX), SI
3721 MOVB -1(CX)(BX*1), CL
3722 MOVB SI, (AX)
3723 MOVB CL, -1(AX)(BX*1)
3724 JMP memmove_end_copy_emit_remainder_encodeBlockAsm12B
3725
3726emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_3:
3727 MOVW (CX), SI
3728 MOVB 2(CX), CL
3729 MOVW SI, (AX)
3730 MOVB CL, 2(AX)
3731 JMP memmove_end_copy_emit_remainder_encodeBlockAsm12B
3732
3733emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_4through7:
3734 MOVL (CX), SI
3735 MOVL -4(CX)(BX*1), CX
3736 MOVL SI, (AX)
3737 MOVL CX, -4(AX)(BX*1)
3738 JMP memmove_end_copy_emit_remainder_encodeBlockAsm12B
3739
3740emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_8through16:
3741 MOVQ (CX), SI
3742 MOVQ -8(CX)(BX*1), CX
3743 MOVQ SI, (AX)
3744 MOVQ CX, -8(AX)(BX*1)
3745 JMP memmove_end_copy_emit_remainder_encodeBlockAsm12B
3746
3747emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_17through32:
3748 MOVOU (CX), X0
3749 MOVOU -16(CX)(BX*1), X1
3750 MOVOU X0, (AX)
3751 MOVOU X1, -16(AX)(BX*1)
3752 JMP memmove_end_copy_emit_remainder_encodeBlockAsm12B
3753
3754emit_lit_memmove_emit_remainder_encodeBlockAsm12B_memmove_move_33through64:
3755 MOVOU (CX), X0
3756 MOVOU 16(CX), X1
3757 MOVOU -32(CX)(BX*1), X2
3758 MOVOU -16(CX)(BX*1), X3
3759 MOVOU X0, (AX)
3760 MOVOU X1, 16(AX)
3761 MOVOU X2, -32(AX)(BX*1)
3762 MOVOU X3, -16(AX)(BX*1)
3763
3764memmove_end_copy_emit_remainder_encodeBlockAsm12B:
3765 MOVQ DX, AX
3766 JMP emit_literal_done_emit_remainder_encodeBlockAsm12B
3767
3768memmove_long_emit_remainder_encodeBlockAsm12B:
3769 LEAQ (AX)(SI*1), DX
3770 MOVL SI, BX
3771
3772 // genMemMoveLong
3773 MOVOU (CX), X0
3774 MOVOU 16(CX), X1
3775 MOVOU -32(CX)(BX*1), X2
3776 MOVOU -16(CX)(BX*1), X3
3777 MOVQ BX, DI
3778 SHRQ $0x05, DI
3779 MOVQ AX, SI
3780 ANDL $0x0000001f, SI
3781 MOVQ $0x00000040, R8
3782 SUBQ SI, R8
3783 DECQ DI
3784 JA emit_lit_memmove_long_emit_remainder_encodeBlockAsm12Blarge_forward_sse_loop_32
3785 LEAQ -32(CX)(R8*1), SI
3786 LEAQ -32(AX)(R8*1), R9
3787
3788emit_lit_memmove_long_emit_remainder_encodeBlockAsm12Blarge_big_loop_back:
3789 MOVOU (SI), X4
3790 MOVOU 16(SI), X5
3791 MOVOA X4, (R9)
3792 MOVOA X5, 16(R9)
3793 ADDQ $0x20, R9
3794 ADDQ $0x20, SI
3795 ADDQ $0x20, R8
3796 DECQ DI
3797 JNA emit_lit_memmove_long_emit_remainder_encodeBlockAsm12Blarge_big_loop_back
3798
3799emit_lit_memmove_long_emit_remainder_encodeBlockAsm12Blarge_forward_sse_loop_32:
3800 MOVOU -32(CX)(R8*1), X4
3801 MOVOU -16(CX)(R8*1), X5
3802 MOVOA X4, -32(AX)(R8*1)
3803 MOVOA X5, -16(AX)(R8*1)
3804 ADDQ $0x20, R8
3805 CMPQ BX, R8
3806 JAE emit_lit_memmove_long_emit_remainder_encodeBlockAsm12Blarge_forward_sse_loop_32
3807 MOVOU X0, (AX)
3808 MOVOU X1, 16(AX)
3809 MOVOU X2, -32(AX)(BX*1)
3810 MOVOU X3, -16(AX)(BX*1)
3811 MOVQ DX, AX
3812
3813emit_literal_done_emit_remainder_encodeBlockAsm12B:
3814 MOVQ dst_base+0(FP), CX
3815 SUBQ CX, AX
3816 MOVQ AX, ret+48(FP)
3817 RET
3818
3819// func encodeBlockAsm10B(dst []byte, src []byte) int
3820// Requires: BMI, SSE2
3821TEXT ·encodeBlockAsm10B(SB), $4120-56
3822 MOVQ dst_base+0(FP), AX
3823 MOVQ $0x00000020, CX
3824 LEAQ 24(SP), DX
3825 PXOR X0, X0
3826
3827zero_loop_encodeBlockAsm10B:
3828 MOVOU X0, (DX)
3829 MOVOU X0, 16(DX)
3830 MOVOU X0, 32(DX)
3831 MOVOU X0, 48(DX)
3832 MOVOU X0, 64(DX)
3833 MOVOU X0, 80(DX)
3834 MOVOU X0, 96(DX)
3835 MOVOU X0, 112(DX)
3836 ADDQ $0x80, DX
3837 DECQ CX
3838 JNZ zero_loop_encodeBlockAsm10B
3839 MOVL $0x00000000, 12(SP)
3840 MOVQ src_len+32(FP), CX
3841 LEAQ -9(CX), DX
3842 LEAQ -8(CX), BX
3843 MOVL BX, 8(SP)
3844 SHRQ $0x05, CX
3845 SUBL CX, DX
3846 LEAQ (AX)(DX*1), DX
3847 MOVQ DX, (SP)
3848 MOVL $0x00000001, CX
3849 MOVL CX, 16(SP)
3850 MOVQ src_base+24(FP), DX
3851
3852search_loop_encodeBlockAsm10B:
3853 MOVL CX, BX
3854 SUBL 12(SP), BX
3855 SHRL $0x05, BX
3856 LEAL 4(CX)(BX*1), BX
3857 CMPL BX, 8(SP)
3858 JAE emit_remainder_encodeBlockAsm10B
3859 MOVQ (DX)(CX*1), SI
3860 MOVL BX, 20(SP)
3861 MOVQ $0x9e3779b1, R8
3862 MOVQ SI, R9
3863 MOVQ SI, R10
3864 SHRQ $0x08, R10
3865 SHLQ $0x20, R9
3866 IMULQ R8, R9
3867 SHRQ $0x36, R9
3868 SHLQ $0x20, R10
3869 IMULQ R8, R10
3870 SHRQ $0x36, R10
3871 MOVL 24(SP)(R9*4), BX
3872 MOVL 24(SP)(R10*4), DI
3873 MOVL CX, 24(SP)(R9*4)
3874 LEAL 1(CX), R9
3875 MOVL R9, 24(SP)(R10*4)
3876 MOVQ SI, R9
3877 SHRQ $0x10, R9
3878 SHLQ $0x20, R9
3879 IMULQ R8, R9
3880 SHRQ $0x36, R9
3881 MOVL CX, R8
3882 SUBL 16(SP), R8
3883 MOVL 1(DX)(R8*1), R10
3884 MOVQ SI, R8
3885 SHRQ $0x08, R8
3886 CMPL R8, R10
3887 JNE no_repeat_found_encodeBlockAsm10B
3888 LEAL 1(CX), SI
3889 MOVL 12(SP), DI
3890 MOVL SI, BX
3891 SUBL 16(SP), BX
3892 JZ repeat_extend_back_end_encodeBlockAsm10B
3893
3894repeat_extend_back_loop_encodeBlockAsm10B:
3895 CMPL SI, DI
3896 JBE repeat_extend_back_end_encodeBlockAsm10B
3897 MOVB -1(DX)(BX*1), R8
3898 MOVB -1(DX)(SI*1), R9
3899 CMPB R8, R9
3900 JNE repeat_extend_back_end_encodeBlockAsm10B
3901 LEAL -1(SI), SI
3902 DECL BX
3903 JNZ repeat_extend_back_loop_encodeBlockAsm10B
3904
3905repeat_extend_back_end_encodeBlockAsm10B:
3906 MOVL 12(SP), BX
3907 CMPL BX, SI
3908 JEQ emit_literal_done_repeat_emit_encodeBlockAsm10B
3909 MOVL SI, R8
3910 MOVL SI, 12(SP)
3911 LEAQ (DX)(BX*1), R9
3912 SUBL BX, R8
3913 LEAL -1(R8), BX
3914 CMPL BX, $0x3c
3915 JB one_byte_repeat_emit_encodeBlockAsm10B
3916 CMPL BX, $0x00000100
3917 JB two_bytes_repeat_emit_encodeBlockAsm10B
3918 JB three_bytes_repeat_emit_encodeBlockAsm10B
3919
3920three_bytes_repeat_emit_encodeBlockAsm10B:
3921 MOVB $0xf4, (AX)
3922 MOVW BX, 1(AX)
3923 ADDQ $0x03, AX
3924 JMP memmove_long_repeat_emit_encodeBlockAsm10B
3925
3926two_bytes_repeat_emit_encodeBlockAsm10B:
3927 MOVB $0xf0, (AX)
3928 MOVB BL, 1(AX)
3929 ADDQ $0x02, AX
3930 CMPL BX, $0x40
3931 JB memmove_repeat_emit_encodeBlockAsm10B
3932 JMP memmove_long_repeat_emit_encodeBlockAsm10B
3933
3934one_byte_repeat_emit_encodeBlockAsm10B:
3935 SHLB $0x02, BL
3936 MOVB BL, (AX)
3937 ADDQ $0x01, AX
3938
3939memmove_repeat_emit_encodeBlockAsm10B:
3940 LEAQ (AX)(R8*1), BX
3941
3942 // genMemMoveShort
3943 CMPQ R8, $0x08
3944 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_8
3945 CMPQ R8, $0x10
3946 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_8through16
3947 CMPQ R8, $0x20
3948 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_17through32
3949 JMP emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_33through64
3950
3951emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_8:
3952 MOVQ (R9), R10
3953 MOVQ R10, (AX)
3954 JMP memmove_end_copy_repeat_emit_encodeBlockAsm10B
3955
3956emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_8through16:
3957 MOVQ (R9), R10
3958 MOVQ -8(R9)(R8*1), R9
3959 MOVQ R10, (AX)
3960 MOVQ R9, -8(AX)(R8*1)
3961 JMP memmove_end_copy_repeat_emit_encodeBlockAsm10B
3962
3963emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_17through32:
3964 MOVOU (R9), X0
3965 MOVOU -16(R9)(R8*1), X1
3966 MOVOU X0, (AX)
3967 MOVOU X1, -16(AX)(R8*1)
3968 JMP memmove_end_copy_repeat_emit_encodeBlockAsm10B
3969
3970emit_lit_memmove_repeat_emit_encodeBlockAsm10B_memmove_move_33through64:
3971 MOVOU (R9), X0
3972 MOVOU 16(R9), X1
3973 MOVOU -32(R9)(R8*1), X2
3974 MOVOU -16(R9)(R8*1), X3
3975 MOVOU X0, (AX)
3976 MOVOU X1, 16(AX)
3977 MOVOU X2, -32(AX)(R8*1)
3978 MOVOU X3, -16(AX)(R8*1)
3979
3980memmove_end_copy_repeat_emit_encodeBlockAsm10B:
3981 MOVQ BX, AX
3982 JMP emit_literal_done_repeat_emit_encodeBlockAsm10B
3983
3984memmove_long_repeat_emit_encodeBlockAsm10B:
3985 LEAQ (AX)(R8*1), BX
3986
3987 // genMemMoveLong
3988 MOVOU (R9), X0
3989 MOVOU 16(R9), X1
3990 MOVOU -32(R9)(R8*1), X2
3991 MOVOU -16(R9)(R8*1), X3
3992 MOVQ R8, R11
3993 SHRQ $0x05, R11
3994 MOVQ AX, R10
3995 ANDL $0x0000001f, R10
3996 MOVQ $0x00000040, R12
3997 SUBQ R10, R12
3998 DECQ R11
3999 JA emit_lit_memmove_long_repeat_emit_encodeBlockAsm10Blarge_forward_sse_loop_32
4000 LEAQ -32(R9)(R12*1), R10
4001 LEAQ -32(AX)(R12*1), R13
4002
4003emit_lit_memmove_long_repeat_emit_encodeBlockAsm10Blarge_big_loop_back:
4004 MOVOU (R10), X4
4005 MOVOU 16(R10), X5
4006 MOVOA X4, (R13)
4007 MOVOA X5, 16(R13)
4008 ADDQ $0x20, R13
4009 ADDQ $0x20, R10
4010 ADDQ $0x20, R12
4011 DECQ R11
4012 JNA emit_lit_memmove_long_repeat_emit_encodeBlockAsm10Blarge_big_loop_back
4013
4014emit_lit_memmove_long_repeat_emit_encodeBlockAsm10Blarge_forward_sse_loop_32:
4015 MOVOU -32(R9)(R12*1), X4
4016 MOVOU -16(R9)(R12*1), X5
4017 MOVOA X4, -32(AX)(R12*1)
4018 MOVOA X5, -16(AX)(R12*1)
4019 ADDQ $0x20, R12
4020 CMPQ R8, R12
4021 JAE emit_lit_memmove_long_repeat_emit_encodeBlockAsm10Blarge_forward_sse_loop_32
4022 MOVOU X0, (AX)
4023 MOVOU X1, 16(AX)
4024 MOVOU X2, -32(AX)(R8*1)
4025 MOVOU X3, -16(AX)(R8*1)
4026 MOVQ BX, AX
4027
4028emit_literal_done_repeat_emit_encodeBlockAsm10B:
4029 ADDL $0x05, CX
4030 MOVL CX, BX
4031 SUBL 16(SP), BX
4032 MOVQ src_len+32(FP), R8
4033 SUBL CX, R8
4034 LEAQ (DX)(CX*1), R9
4035 LEAQ (DX)(BX*1), BX
4036
4037 // matchLen
4038 XORL R11, R11
4039
4040matchlen_loopback_16_repeat_extend_encodeBlockAsm10B:
4041 CMPL R8, $0x10
4042 JB matchlen_match8_repeat_extend_encodeBlockAsm10B
4043 MOVQ (R9)(R11*1), R10
4044 MOVQ 8(R9)(R11*1), R12
4045 XORQ (BX)(R11*1), R10
4046 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm10B
4047 XORQ 8(BX)(R11*1), R12
4048 JNZ matchlen_bsf_16repeat_extend_encodeBlockAsm10B
4049 LEAL -16(R8), R8
4050 LEAL 16(R11), R11
4051 JMP matchlen_loopback_16_repeat_extend_encodeBlockAsm10B
4052
4053matchlen_bsf_16repeat_extend_encodeBlockAsm10B:
4054#ifdef GOAMD64_v3
4055 TZCNTQ R12, R12
4056
4057#else
4058 BSFQ R12, R12
4059
4060#endif
4061 SARQ $0x03, R12
4062 LEAL 8(R11)(R12*1), R11
4063 JMP repeat_extend_forward_end_encodeBlockAsm10B
4064
4065matchlen_match8_repeat_extend_encodeBlockAsm10B:
4066 CMPL R8, $0x08
4067 JB matchlen_match4_repeat_extend_encodeBlockAsm10B
4068 MOVQ (R9)(R11*1), R10
4069 XORQ (BX)(R11*1), R10
4070 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm10B
4071 LEAL -8(R8), R8
4072 LEAL 8(R11), R11
4073 JMP matchlen_match4_repeat_extend_encodeBlockAsm10B
4074
4075matchlen_bsf_8_repeat_extend_encodeBlockAsm10B:
4076#ifdef GOAMD64_v3
4077 TZCNTQ R10, R10
4078
4079#else
4080 BSFQ R10, R10
4081
4082#endif
4083 SARQ $0x03, R10
4084 LEAL (R11)(R10*1), R11
4085 JMP repeat_extend_forward_end_encodeBlockAsm10B
4086
4087matchlen_match4_repeat_extend_encodeBlockAsm10B:
4088 CMPL R8, $0x04
4089 JB matchlen_match2_repeat_extend_encodeBlockAsm10B
4090 MOVL (R9)(R11*1), R10
4091 CMPL (BX)(R11*1), R10
4092 JNE matchlen_match2_repeat_extend_encodeBlockAsm10B
4093 LEAL -4(R8), R8
4094 LEAL 4(R11), R11
4095
4096matchlen_match2_repeat_extend_encodeBlockAsm10B:
4097 CMPL R8, $0x01
4098 JE matchlen_match1_repeat_extend_encodeBlockAsm10B
4099 JB repeat_extend_forward_end_encodeBlockAsm10B
4100 MOVW (R9)(R11*1), R10
4101 CMPW (BX)(R11*1), R10
4102 JNE matchlen_match1_repeat_extend_encodeBlockAsm10B
4103 LEAL 2(R11), R11
4104 SUBL $0x02, R8
4105 JZ repeat_extend_forward_end_encodeBlockAsm10B
4106
4107matchlen_match1_repeat_extend_encodeBlockAsm10B:
4108 MOVB (R9)(R11*1), R10
4109 CMPB (BX)(R11*1), R10
4110 JNE repeat_extend_forward_end_encodeBlockAsm10B
4111 LEAL 1(R11), R11
4112
4113repeat_extend_forward_end_encodeBlockAsm10B:
4114 ADDL R11, CX
4115 MOVL CX, BX
4116 SUBL SI, BX
4117 MOVL 16(SP), SI
4118 TESTL DI, DI
4119 JZ repeat_as_copy_encodeBlockAsm10B
4120
4121 // emitRepeat
4122 MOVL BX, DI
4123 LEAL -4(BX), BX
4124 CMPL DI, $0x08
4125 JBE repeat_two_match_repeat_encodeBlockAsm10B
4126 CMPL DI, $0x0c
4127 JAE cant_repeat_two_offset_match_repeat_encodeBlockAsm10B
4128 CMPL SI, $0x00000800
4129 JB repeat_two_offset_match_repeat_encodeBlockAsm10B
4130
4131cant_repeat_two_offset_match_repeat_encodeBlockAsm10B:
4132 CMPL BX, $0x00000104
4133 JB repeat_three_match_repeat_encodeBlockAsm10B
4134 LEAL -256(BX), BX
4135 MOVW $0x0019, (AX)
4136 MOVW BX, 2(AX)
4137 ADDQ $0x04, AX
4138 JMP repeat_end_emit_encodeBlockAsm10B
4139
4140repeat_three_match_repeat_encodeBlockAsm10B:
4141 LEAL -4(BX), BX
4142 MOVW $0x0015, (AX)
4143 MOVB BL, 2(AX)
4144 ADDQ $0x03, AX
4145 JMP repeat_end_emit_encodeBlockAsm10B
4146
4147repeat_two_match_repeat_encodeBlockAsm10B:
4148 SHLL $0x02, BX
4149 ORL $0x01, BX
4150 MOVW BX, (AX)
4151 ADDQ $0x02, AX
4152 JMP repeat_end_emit_encodeBlockAsm10B
4153
4154repeat_two_offset_match_repeat_encodeBlockAsm10B:
4155 XORQ DI, DI
4156 LEAL 1(DI)(BX*4), BX
4157 MOVB SI, 1(AX)
4158 SARL $0x08, SI
4159 SHLL $0x05, SI
4160 ORL SI, BX
4161 MOVB BL, (AX)
4162 ADDQ $0x02, AX
4163 JMP repeat_end_emit_encodeBlockAsm10B
4164
4165repeat_as_copy_encodeBlockAsm10B:
4166 // emitCopy
4167 CMPL BX, $0x40
4168 JBE two_byte_offset_short_repeat_as_copy_encodeBlockAsm10B
4169 CMPL SI, $0x00000800
4170 JAE long_offset_short_repeat_as_copy_encodeBlockAsm10B
4171 MOVL $0x00000001, DI
4172 LEAL 16(DI), DI
4173 MOVB SI, 1(AX)
4174 SHRL $0x08, SI
4175 SHLL $0x05, SI
4176 ORL SI, DI
4177 MOVB DI, (AX)
4178 ADDQ $0x02, AX
4179 SUBL $0x08, BX
4180
4181 // emitRepeat
4182 LEAL -4(BX), BX
4183 JMP cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b
4184 MOVL BX, DI
4185 LEAL -4(BX), BX
4186 CMPL DI, $0x08
4187 JBE repeat_two_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b
4188 CMPL DI, $0x0c
4189 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b
4190 CMPL SI, $0x00000800
4191 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b
4192
4193cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b:
4194 CMPL BX, $0x00000104
4195 JB repeat_three_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b
4196 LEAL -256(BX), BX
4197 MOVW $0x0019, (AX)
4198 MOVW BX, 2(AX)
4199 ADDQ $0x04, AX
4200 JMP repeat_end_emit_encodeBlockAsm10B
4201
4202repeat_three_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b:
4203 LEAL -4(BX), BX
4204 MOVW $0x0015, (AX)
4205 MOVB BL, 2(AX)
4206 ADDQ $0x03, AX
4207 JMP repeat_end_emit_encodeBlockAsm10B
4208
4209repeat_two_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b:
4210 SHLL $0x02, BX
4211 ORL $0x01, BX
4212 MOVW BX, (AX)
4213 ADDQ $0x02, AX
4214 JMP repeat_end_emit_encodeBlockAsm10B
4215
4216repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short_2b:
4217 XORQ DI, DI
4218 LEAL 1(DI)(BX*4), BX
4219 MOVB SI, 1(AX)
4220 SARL $0x08, SI
4221 SHLL $0x05, SI
4222 ORL SI, BX
4223 MOVB BL, (AX)
4224 ADDQ $0x02, AX
4225 JMP repeat_end_emit_encodeBlockAsm10B
4226
4227long_offset_short_repeat_as_copy_encodeBlockAsm10B:
4228 MOVB $0xee, (AX)
4229 MOVW SI, 1(AX)
4230 LEAL -60(BX), BX
4231 ADDQ $0x03, AX
4232
4233 // emitRepeat
4234 MOVL BX, DI
4235 LEAL -4(BX), BX
4236 CMPL DI, $0x08
4237 JBE repeat_two_repeat_as_copy_encodeBlockAsm10B_emit_copy_short
4238 CMPL DI, $0x0c
4239 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short
4240 CMPL SI, $0x00000800
4241 JB repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short
4242
4243cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short:
4244 CMPL BX, $0x00000104
4245 JB repeat_three_repeat_as_copy_encodeBlockAsm10B_emit_copy_short
4246 LEAL -256(BX), BX
4247 MOVW $0x0019, (AX)
4248 MOVW BX, 2(AX)
4249 ADDQ $0x04, AX
4250 JMP repeat_end_emit_encodeBlockAsm10B
4251
4252repeat_three_repeat_as_copy_encodeBlockAsm10B_emit_copy_short:
4253 LEAL -4(BX), BX
4254 MOVW $0x0015, (AX)
4255 MOVB BL, 2(AX)
4256 ADDQ $0x03, AX
4257 JMP repeat_end_emit_encodeBlockAsm10B
4258
4259repeat_two_repeat_as_copy_encodeBlockAsm10B_emit_copy_short:
4260 SHLL $0x02, BX
4261 ORL $0x01, BX
4262 MOVW BX, (AX)
4263 ADDQ $0x02, AX
4264 JMP repeat_end_emit_encodeBlockAsm10B
4265
4266repeat_two_offset_repeat_as_copy_encodeBlockAsm10B_emit_copy_short:
4267 XORQ DI, DI
4268 LEAL 1(DI)(BX*4), BX
4269 MOVB SI, 1(AX)
4270 SARL $0x08, SI
4271 SHLL $0x05, SI
4272 ORL SI, BX
4273 MOVB BL, (AX)
4274 ADDQ $0x02, AX
4275 JMP repeat_end_emit_encodeBlockAsm10B
4276
4277two_byte_offset_short_repeat_as_copy_encodeBlockAsm10B:
4278 MOVL BX, DI
4279 SHLL $0x02, DI
4280 CMPL BX, $0x0c
4281 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm10B
4282 CMPL SI, $0x00000800
4283 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm10B
4284 LEAL -15(DI), DI
4285 MOVB SI, 1(AX)
4286 SHRL $0x08, SI
4287 SHLL $0x05, SI
4288 ORL SI, DI
4289 MOVB DI, (AX)
4290 ADDQ $0x02, AX
4291 JMP repeat_end_emit_encodeBlockAsm10B
4292
4293emit_copy_three_repeat_as_copy_encodeBlockAsm10B:
4294 LEAL -2(DI), DI
4295 MOVB DI, (AX)
4296 MOVW SI, 1(AX)
4297 ADDQ $0x03, AX
4298
4299repeat_end_emit_encodeBlockAsm10B:
4300 MOVL CX, 12(SP)
4301 JMP search_loop_encodeBlockAsm10B
4302
4303no_repeat_found_encodeBlockAsm10B:
4304 CMPL (DX)(BX*1), SI
4305 JEQ candidate_match_encodeBlockAsm10B
4306 SHRQ $0x08, SI
4307 MOVL 24(SP)(R9*4), BX
4308 LEAL 2(CX), R8
4309 CMPL (DX)(DI*1), SI
4310 JEQ candidate2_match_encodeBlockAsm10B
4311 MOVL R8, 24(SP)(R9*4)
4312 SHRQ $0x08, SI
4313 CMPL (DX)(BX*1), SI
4314 JEQ candidate3_match_encodeBlockAsm10B
4315 MOVL 20(SP), CX
4316 JMP search_loop_encodeBlockAsm10B
4317
4318candidate3_match_encodeBlockAsm10B:
4319 ADDL $0x02, CX
4320 JMP candidate_match_encodeBlockAsm10B
4321
4322candidate2_match_encodeBlockAsm10B:
4323 MOVL R8, 24(SP)(R9*4)
4324 INCL CX
4325 MOVL DI, BX
4326
4327candidate_match_encodeBlockAsm10B:
4328 MOVL 12(SP), SI
4329 TESTL BX, BX
4330 JZ match_extend_back_end_encodeBlockAsm10B
4331
4332match_extend_back_loop_encodeBlockAsm10B:
4333 CMPL CX, SI
4334 JBE match_extend_back_end_encodeBlockAsm10B
4335 MOVB -1(DX)(BX*1), DI
4336 MOVB -1(DX)(CX*1), R8
4337 CMPB DI, R8
4338 JNE match_extend_back_end_encodeBlockAsm10B
4339 LEAL -1(CX), CX
4340 DECL BX
4341 JZ match_extend_back_end_encodeBlockAsm10B
4342 JMP match_extend_back_loop_encodeBlockAsm10B
4343
4344match_extend_back_end_encodeBlockAsm10B:
4345 MOVL CX, SI
4346 SUBL 12(SP), SI
4347 LEAQ 3(AX)(SI*1), SI
4348 CMPQ SI, (SP)
4349 JB match_dst_size_check_encodeBlockAsm10B
4350 MOVQ $0x00000000, ret+48(FP)
4351 RET
4352
4353match_dst_size_check_encodeBlockAsm10B:
4354 MOVL CX, SI
4355 MOVL 12(SP), DI
4356 CMPL DI, SI
4357 JEQ emit_literal_done_match_emit_encodeBlockAsm10B
4358 MOVL SI, R8
4359 MOVL SI, 12(SP)
4360 LEAQ (DX)(DI*1), SI
4361 SUBL DI, R8
4362 LEAL -1(R8), DI
4363 CMPL DI, $0x3c
4364 JB one_byte_match_emit_encodeBlockAsm10B
4365 CMPL DI, $0x00000100
4366 JB two_bytes_match_emit_encodeBlockAsm10B
4367 JB three_bytes_match_emit_encodeBlockAsm10B
4368
4369three_bytes_match_emit_encodeBlockAsm10B:
4370 MOVB $0xf4, (AX)
4371 MOVW DI, 1(AX)
4372 ADDQ $0x03, AX
4373 JMP memmove_long_match_emit_encodeBlockAsm10B
4374
4375two_bytes_match_emit_encodeBlockAsm10B:
4376 MOVB $0xf0, (AX)
4377 MOVB DI, 1(AX)
4378 ADDQ $0x02, AX
4379 CMPL DI, $0x40
4380 JB memmove_match_emit_encodeBlockAsm10B
4381 JMP memmove_long_match_emit_encodeBlockAsm10B
4382
4383one_byte_match_emit_encodeBlockAsm10B:
4384 SHLB $0x02, DI
4385 MOVB DI, (AX)
4386 ADDQ $0x01, AX
4387
4388memmove_match_emit_encodeBlockAsm10B:
4389 LEAQ (AX)(R8*1), DI
4390
4391 // genMemMoveShort
4392 CMPQ R8, $0x08
4393 JBE emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_8
4394 CMPQ R8, $0x10
4395 JBE emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_8through16
4396 CMPQ R8, $0x20
4397 JBE emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_17through32
4398 JMP emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_33through64
4399
4400emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_8:
4401 MOVQ (SI), R9
4402 MOVQ R9, (AX)
4403 JMP memmove_end_copy_match_emit_encodeBlockAsm10B
4404
4405emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_8through16:
4406 MOVQ (SI), R9
4407 MOVQ -8(SI)(R8*1), SI
4408 MOVQ R9, (AX)
4409 MOVQ SI, -8(AX)(R8*1)
4410 JMP memmove_end_copy_match_emit_encodeBlockAsm10B
4411
4412emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_17through32:
4413 MOVOU (SI), X0
4414 MOVOU -16(SI)(R8*1), X1
4415 MOVOU X0, (AX)
4416 MOVOU X1, -16(AX)(R8*1)
4417 JMP memmove_end_copy_match_emit_encodeBlockAsm10B
4418
4419emit_lit_memmove_match_emit_encodeBlockAsm10B_memmove_move_33through64:
4420 MOVOU (SI), X0
4421 MOVOU 16(SI), X1
4422 MOVOU -32(SI)(R8*1), X2
4423 MOVOU -16(SI)(R8*1), X3
4424 MOVOU X0, (AX)
4425 MOVOU X1, 16(AX)
4426 MOVOU X2, -32(AX)(R8*1)
4427 MOVOU X3, -16(AX)(R8*1)
4428
4429memmove_end_copy_match_emit_encodeBlockAsm10B:
4430 MOVQ DI, AX
4431 JMP emit_literal_done_match_emit_encodeBlockAsm10B
4432
4433memmove_long_match_emit_encodeBlockAsm10B:
4434 LEAQ (AX)(R8*1), DI
4435
4436 // genMemMoveLong
4437 MOVOU (SI), X0
4438 MOVOU 16(SI), X1
4439 MOVOU -32(SI)(R8*1), X2
4440 MOVOU -16(SI)(R8*1), X3
4441 MOVQ R8, R10
4442 SHRQ $0x05, R10
4443 MOVQ AX, R9
4444 ANDL $0x0000001f, R9
4445 MOVQ $0x00000040, R11
4446 SUBQ R9, R11
4447 DECQ R10
4448 JA emit_lit_memmove_long_match_emit_encodeBlockAsm10Blarge_forward_sse_loop_32
4449 LEAQ -32(SI)(R11*1), R9
4450 LEAQ -32(AX)(R11*1), R12
4451
4452emit_lit_memmove_long_match_emit_encodeBlockAsm10Blarge_big_loop_back:
4453 MOVOU (R9), X4
4454 MOVOU 16(R9), X5
4455 MOVOA X4, (R12)
4456 MOVOA X5, 16(R12)
4457 ADDQ $0x20, R12
4458 ADDQ $0x20, R9
4459 ADDQ $0x20, R11
4460 DECQ R10
4461 JNA emit_lit_memmove_long_match_emit_encodeBlockAsm10Blarge_big_loop_back
4462
4463emit_lit_memmove_long_match_emit_encodeBlockAsm10Blarge_forward_sse_loop_32:
4464 MOVOU -32(SI)(R11*1), X4
4465 MOVOU -16(SI)(R11*1), X5
4466 MOVOA X4, -32(AX)(R11*1)
4467 MOVOA X5, -16(AX)(R11*1)
4468 ADDQ $0x20, R11
4469 CMPQ R8, R11
4470 JAE emit_lit_memmove_long_match_emit_encodeBlockAsm10Blarge_forward_sse_loop_32
4471 MOVOU X0, (AX)
4472 MOVOU X1, 16(AX)
4473 MOVOU X2, -32(AX)(R8*1)
4474 MOVOU X3, -16(AX)(R8*1)
4475 MOVQ DI, AX
4476
4477emit_literal_done_match_emit_encodeBlockAsm10B:
4478match_nolit_loop_encodeBlockAsm10B:
4479 MOVL CX, SI
4480 SUBL BX, SI
4481 MOVL SI, 16(SP)
4482 ADDL $0x04, CX
4483 ADDL $0x04, BX
4484 MOVQ src_len+32(FP), SI
4485 SUBL CX, SI
4486 LEAQ (DX)(CX*1), DI
4487 LEAQ (DX)(BX*1), BX
4488
4489 // matchLen
4490 XORL R9, R9
4491
4492matchlen_loopback_16_match_nolit_encodeBlockAsm10B:
4493 CMPL SI, $0x10
4494 JB matchlen_match8_match_nolit_encodeBlockAsm10B
4495 MOVQ (DI)(R9*1), R8
4496 MOVQ 8(DI)(R9*1), R10
4497 XORQ (BX)(R9*1), R8
4498 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm10B
4499 XORQ 8(BX)(R9*1), R10
4500 JNZ matchlen_bsf_16match_nolit_encodeBlockAsm10B
4501 LEAL -16(SI), SI
4502 LEAL 16(R9), R9
4503 JMP matchlen_loopback_16_match_nolit_encodeBlockAsm10B
4504
4505matchlen_bsf_16match_nolit_encodeBlockAsm10B:
4506#ifdef GOAMD64_v3
4507 TZCNTQ R10, R10
4508
4509#else
4510 BSFQ R10, R10
4511
4512#endif
4513 SARQ $0x03, R10
4514 LEAL 8(R9)(R10*1), R9
4515 JMP match_nolit_end_encodeBlockAsm10B
4516
4517matchlen_match8_match_nolit_encodeBlockAsm10B:
4518 CMPL SI, $0x08
4519 JB matchlen_match4_match_nolit_encodeBlockAsm10B
4520 MOVQ (DI)(R9*1), R8
4521 XORQ (BX)(R9*1), R8
4522 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm10B
4523 LEAL -8(SI), SI
4524 LEAL 8(R9), R9
4525 JMP matchlen_match4_match_nolit_encodeBlockAsm10B
4526
4527matchlen_bsf_8_match_nolit_encodeBlockAsm10B:
4528#ifdef GOAMD64_v3
4529 TZCNTQ R8, R8
4530
4531#else
4532 BSFQ R8, R8
4533
4534#endif
4535 SARQ $0x03, R8
4536 LEAL (R9)(R8*1), R9
4537 JMP match_nolit_end_encodeBlockAsm10B
4538
4539matchlen_match4_match_nolit_encodeBlockAsm10B:
4540 CMPL SI, $0x04
4541 JB matchlen_match2_match_nolit_encodeBlockAsm10B
4542 MOVL (DI)(R9*1), R8
4543 CMPL (BX)(R9*1), R8
4544 JNE matchlen_match2_match_nolit_encodeBlockAsm10B
4545 LEAL -4(SI), SI
4546 LEAL 4(R9), R9
4547
4548matchlen_match2_match_nolit_encodeBlockAsm10B:
4549 CMPL SI, $0x01
4550 JE matchlen_match1_match_nolit_encodeBlockAsm10B
4551 JB match_nolit_end_encodeBlockAsm10B
4552 MOVW (DI)(R9*1), R8
4553 CMPW (BX)(R9*1), R8
4554 JNE matchlen_match1_match_nolit_encodeBlockAsm10B
4555 LEAL 2(R9), R9
4556 SUBL $0x02, SI
4557 JZ match_nolit_end_encodeBlockAsm10B
4558
4559matchlen_match1_match_nolit_encodeBlockAsm10B:
4560 MOVB (DI)(R9*1), R8
4561 CMPB (BX)(R9*1), R8
4562 JNE match_nolit_end_encodeBlockAsm10B
4563 LEAL 1(R9), R9
4564
4565match_nolit_end_encodeBlockAsm10B:
4566 ADDL R9, CX
4567 MOVL 16(SP), BX
4568 ADDL $0x04, R9
4569 MOVL CX, 12(SP)
4570
4571 // emitCopy
4572 CMPL R9, $0x40
4573 JBE two_byte_offset_short_match_nolit_encodeBlockAsm10B
4574 CMPL BX, $0x00000800
4575 JAE long_offset_short_match_nolit_encodeBlockAsm10B
4576 MOVL $0x00000001, SI
4577 LEAL 16(SI), SI
4578 MOVB BL, 1(AX)
4579 SHRL $0x08, BX
4580 SHLL $0x05, BX
4581 ORL BX, SI
4582 MOVB SI, (AX)
4583 ADDQ $0x02, AX
4584 SUBL $0x08, R9
4585
4586 // emitRepeat
4587 LEAL -4(R9), R9
4588 JMP cant_repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short_2b
4589 MOVL R9, SI
4590 LEAL -4(R9), R9
4591 CMPL SI, $0x08
4592 JBE repeat_two_match_nolit_encodeBlockAsm10B_emit_copy_short_2b
4593 CMPL SI, $0x0c
4594 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short_2b
4595 CMPL BX, $0x00000800
4596 JB repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short_2b
4597
4598cant_repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short_2b:
4599 CMPL R9, $0x00000104
4600 JB repeat_three_match_nolit_encodeBlockAsm10B_emit_copy_short_2b
4601 LEAL -256(R9), R9
4602 MOVW $0x0019, (AX)
4603 MOVW R9, 2(AX)
4604 ADDQ $0x04, AX
4605 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4606
4607repeat_three_match_nolit_encodeBlockAsm10B_emit_copy_short_2b:
4608 LEAL -4(R9), R9
4609 MOVW $0x0015, (AX)
4610 MOVB R9, 2(AX)
4611 ADDQ $0x03, AX
4612 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4613
4614repeat_two_match_nolit_encodeBlockAsm10B_emit_copy_short_2b:
4615 SHLL $0x02, R9
4616 ORL $0x01, R9
4617 MOVW R9, (AX)
4618 ADDQ $0x02, AX
4619 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4620
4621repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short_2b:
4622 XORQ SI, SI
4623 LEAL 1(SI)(R9*4), R9
4624 MOVB BL, 1(AX)
4625 SARL $0x08, BX
4626 SHLL $0x05, BX
4627 ORL BX, R9
4628 MOVB R9, (AX)
4629 ADDQ $0x02, AX
4630 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4631
4632long_offset_short_match_nolit_encodeBlockAsm10B:
4633 MOVB $0xee, (AX)
4634 MOVW BX, 1(AX)
4635 LEAL -60(R9), R9
4636 ADDQ $0x03, AX
4637
4638 // emitRepeat
4639 MOVL R9, SI
4640 LEAL -4(R9), R9
4641 CMPL SI, $0x08
4642 JBE repeat_two_match_nolit_encodeBlockAsm10B_emit_copy_short
4643 CMPL SI, $0x0c
4644 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short
4645 CMPL BX, $0x00000800
4646 JB repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short
4647
4648cant_repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short:
4649 CMPL R9, $0x00000104
4650 JB repeat_three_match_nolit_encodeBlockAsm10B_emit_copy_short
4651 LEAL -256(R9), R9
4652 MOVW $0x0019, (AX)
4653 MOVW R9, 2(AX)
4654 ADDQ $0x04, AX
4655 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4656
4657repeat_three_match_nolit_encodeBlockAsm10B_emit_copy_short:
4658 LEAL -4(R9), R9
4659 MOVW $0x0015, (AX)
4660 MOVB R9, 2(AX)
4661 ADDQ $0x03, AX
4662 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4663
4664repeat_two_match_nolit_encodeBlockAsm10B_emit_copy_short:
4665 SHLL $0x02, R9
4666 ORL $0x01, R9
4667 MOVW R9, (AX)
4668 ADDQ $0x02, AX
4669 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4670
4671repeat_two_offset_match_nolit_encodeBlockAsm10B_emit_copy_short:
4672 XORQ SI, SI
4673 LEAL 1(SI)(R9*4), R9
4674 MOVB BL, 1(AX)
4675 SARL $0x08, BX
4676 SHLL $0x05, BX
4677 ORL BX, R9
4678 MOVB R9, (AX)
4679 ADDQ $0x02, AX
4680 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4681
4682two_byte_offset_short_match_nolit_encodeBlockAsm10B:
4683 MOVL R9, SI
4684 SHLL $0x02, SI
4685 CMPL R9, $0x0c
4686 JAE emit_copy_three_match_nolit_encodeBlockAsm10B
4687 CMPL BX, $0x00000800
4688 JAE emit_copy_three_match_nolit_encodeBlockAsm10B
4689 LEAL -15(SI), SI
4690 MOVB BL, 1(AX)
4691 SHRL $0x08, BX
4692 SHLL $0x05, BX
4693 ORL BX, SI
4694 MOVB SI, (AX)
4695 ADDQ $0x02, AX
4696 JMP match_nolit_emitcopy_end_encodeBlockAsm10B
4697
4698emit_copy_three_match_nolit_encodeBlockAsm10B:
4699 LEAL -2(SI), SI
4700 MOVB SI, (AX)
4701 MOVW BX, 1(AX)
4702 ADDQ $0x03, AX
4703
4704match_nolit_emitcopy_end_encodeBlockAsm10B:
4705 CMPL CX, 8(SP)
4706 JAE emit_remainder_encodeBlockAsm10B
4707 MOVQ -2(DX)(CX*1), SI
4708 CMPQ AX, (SP)
4709 JB match_nolit_dst_ok_encodeBlockAsm10B
4710 MOVQ $0x00000000, ret+48(FP)
4711 RET
4712
4713match_nolit_dst_ok_encodeBlockAsm10B:
4714 MOVQ $0x9e3779b1, R8
4715 MOVQ SI, DI
4716 SHRQ $0x10, SI
4717 MOVQ SI, BX
4718 SHLQ $0x20, DI
4719 IMULQ R8, DI
4720 SHRQ $0x36, DI
4721 SHLQ $0x20, BX
4722 IMULQ R8, BX
4723 SHRQ $0x36, BX
4724 LEAL -2(CX), R8
4725 LEAQ 24(SP)(BX*4), R9
4726 MOVL (R9), BX
4727 MOVL R8, 24(SP)(DI*4)
4728 MOVL CX, (R9)
4729 CMPL (DX)(BX*1), SI
4730 JEQ match_nolit_loop_encodeBlockAsm10B
4731 INCL CX
4732 JMP search_loop_encodeBlockAsm10B
4733
4734emit_remainder_encodeBlockAsm10B:
4735 MOVQ src_len+32(FP), CX
4736 SUBL 12(SP), CX
4737 LEAQ 3(AX)(CX*1), CX
4738 CMPQ CX, (SP)
4739 JB emit_remainder_ok_encodeBlockAsm10B
4740 MOVQ $0x00000000, ret+48(FP)
4741 RET
4742
4743emit_remainder_ok_encodeBlockAsm10B:
4744 MOVQ src_len+32(FP), CX
4745 MOVL 12(SP), BX
4746 CMPL BX, CX
4747 JEQ emit_literal_done_emit_remainder_encodeBlockAsm10B
4748 MOVL CX, SI
4749 MOVL CX, 12(SP)
4750 LEAQ (DX)(BX*1), CX
4751 SUBL BX, SI
4752 LEAL -1(SI), DX
4753 CMPL DX, $0x3c
4754 JB one_byte_emit_remainder_encodeBlockAsm10B
4755 CMPL DX, $0x00000100
4756 JB two_bytes_emit_remainder_encodeBlockAsm10B
4757 JB three_bytes_emit_remainder_encodeBlockAsm10B
4758
4759three_bytes_emit_remainder_encodeBlockAsm10B:
4760 MOVB $0xf4, (AX)
4761 MOVW DX, 1(AX)
4762 ADDQ $0x03, AX
4763 JMP memmove_long_emit_remainder_encodeBlockAsm10B
4764
4765two_bytes_emit_remainder_encodeBlockAsm10B:
4766 MOVB $0xf0, (AX)
4767 MOVB DL, 1(AX)
4768 ADDQ $0x02, AX
4769 CMPL DX, $0x40
4770 JB memmove_emit_remainder_encodeBlockAsm10B
4771 JMP memmove_long_emit_remainder_encodeBlockAsm10B
4772
4773one_byte_emit_remainder_encodeBlockAsm10B:
4774 SHLB $0x02, DL
4775 MOVB DL, (AX)
4776 ADDQ $0x01, AX
4777
4778memmove_emit_remainder_encodeBlockAsm10B:
4779 LEAQ (AX)(SI*1), DX
4780 MOVL SI, BX
4781
4782 // genMemMoveShort
4783 CMPQ BX, $0x03
4784 JB emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_1or2
4785 JE emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_3
4786 CMPQ BX, $0x08
4787 JB emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_4through7
4788 CMPQ BX, $0x10
4789 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_8through16
4790 CMPQ BX, $0x20
4791 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_17through32
4792 JMP emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_33through64
4793
4794emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_1or2:
4795 MOVB (CX), SI
4796 MOVB -1(CX)(BX*1), CL
4797 MOVB SI, (AX)
4798 MOVB CL, -1(AX)(BX*1)
4799 JMP memmove_end_copy_emit_remainder_encodeBlockAsm10B
4800
4801emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_3:
4802 MOVW (CX), SI
4803 MOVB 2(CX), CL
4804 MOVW SI, (AX)
4805 MOVB CL, 2(AX)
4806 JMP memmove_end_copy_emit_remainder_encodeBlockAsm10B
4807
4808emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_4through7:
4809 MOVL (CX), SI
4810 MOVL -4(CX)(BX*1), CX
4811 MOVL SI, (AX)
4812 MOVL CX, -4(AX)(BX*1)
4813 JMP memmove_end_copy_emit_remainder_encodeBlockAsm10B
4814
4815emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_8through16:
4816 MOVQ (CX), SI
4817 MOVQ -8(CX)(BX*1), CX
4818 MOVQ SI, (AX)
4819 MOVQ CX, -8(AX)(BX*1)
4820 JMP memmove_end_copy_emit_remainder_encodeBlockAsm10B
4821
4822emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_17through32:
4823 MOVOU (CX), X0
4824 MOVOU -16(CX)(BX*1), X1
4825 MOVOU X0, (AX)
4826 MOVOU X1, -16(AX)(BX*1)
4827 JMP memmove_end_copy_emit_remainder_encodeBlockAsm10B
4828
4829emit_lit_memmove_emit_remainder_encodeBlockAsm10B_memmove_move_33through64:
4830 MOVOU (CX), X0
4831 MOVOU 16(CX), X1
4832 MOVOU -32(CX)(BX*1), X2
4833 MOVOU -16(CX)(BX*1), X3
4834 MOVOU X0, (AX)
4835 MOVOU X1, 16(AX)
4836 MOVOU X2, -32(AX)(BX*1)
4837 MOVOU X3, -16(AX)(BX*1)
4838
4839memmove_end_copy_emit_remainder_encodeBlockAsm10B:
4840 MOVQ DX, AX
4841 JMP emit_literal_done_emit_remainder_encodeBlockAsm10B
4842
4843memmove_long_emit_remainder_encodeBlockAsm10B:
4844 LEAQ (AX)(SI*1), DX
4845 MOVL SI, BX
4846
4847 // genMemMoveLong
4848 MOVOU (CX), X0
4849 MOVOU 16(CX), X1
4850 MOVOU -32(CX)(BX*1), X2
4851 MOVOU -16(CX)(BX*1), X3
4852 MOVQ BX, DI
4853 SHRQ $0x05, DI
4854 MOVQ AX, SI
4855 ANDL $0x0000001f, SI
4856 MOVQ $0x00000040, R8
4857 SUBQ SI, R8
4858 DECQ DI
4859 JA emit_lit_memmove_long_emit_remainder_encodeBlockAsm10Blarge_forward_sse_loop_32
4860 LEAQ -32(CX)(R8*1), SI
4861 LEAQ -32(AX)(R8*1), R9
4862
4863emit_lit_memmove_long_emit_remainder_encodeBlockAsm10Blarge_big_loop_back:
4864 MOVOU (SI), X4
4865 MOVOU 16(SI), X5
4866 MOVOA X4, (R9)
4867 MOVOA X5, 16(R9)
4868 ADDQ $0x20, R9
4869 ADDQ $0x20, SI
4870 ADDQ $0x20, R8
4871 DECQ DI
4872 JNA emit_lit_memmove_long_emit_remainder_encodeBlockAsm10Blarge_big_loop_back
4873
4874emit_lit_memmove_long_emit_remainder_encodeBlockAsm10Blarge_forward_sse_loop_32:
4875 MOVOU -32(CX)(R8*1), X4
4876 MOVOU -16(CX)(R8*1), X5
4877 MOVOA X4, -32(AX)(R8*1)
4878 MOVOA X5, -16(AX)(R8*1)
4879 ADDQ $0x20, R8
4880 CMPQ BX, R8
4881 JAE emit_lit_memmove_long_emit_remainder_encodeBlockAsm10Blarge_forward_sse_loop_32
4882 MOVOU X0, (AX)
4883 MOVOU X1, 16(AX)
4884 MOVOU X2, -32(AX)(BX*1)
4885 MOVOU X3, -16(AX)(BX*1)
4886 MOVQ DX, AX
4887
4888emit_literal_done_emit_remainder_encodeBlockAsm10B:
4889 MOVQ dst_base+0(FP), CX
4890 SUBQ CX, AX
4891 MOVQ AX, ret+48(FP)
4892 RET
4893
4894// func encodeBlockAsm8B(dst []byte, src []byte) int
4895// Requires: BMI, SSE2
4896TEXT ·encodeBlockAsm8B(SB), $1048-56
4897 MOVQ dst_base+0(FP), AX
4898 MOVQ $0x00000008, CX
4899 LEAQ 24(SP), DX
4900 PXOR X0, X0
4901
4902zero_loop_encodeBlockAsm8B:
4903 MOVOU X0, (DX)
4904 MOVOU X0, 16(DX)
4905 MOVOU X0, 32(DX)
4906 MOVOU X0, 48(DX)
4907 MOVOU X0, 64(DX)
4908 MOVOU X0, 80(DX)
4909 MOVOU X0, 96(DX)
4910 MOVOU X0, 112(DX)
4911 ADDQ $0x80, DX
4912 DECQ CX
4913 JNZ zero_loop_encodeBlockAsm8B
4914 MOVL $0x00000000, 12(SP)
4915 MOVQ src_len+32(FP), CX
4916 LEAQ -9(CX), DX
4917 LEAQ -8(CX), BX
4918 MOVL BX, 8(SP)
4919 SHRQ $0x05, CX
4920 SUBL CX, DX
4921 LEAQ (AX)(DX*1), DX
4922 MOVQ DX, (SP)
4923 MOVL $0x00000001, CX
4924 MOVL CX, 16(SP)
4925 MOVQ src_base+24(FP), DX
4926
4927search_loop_encodeBlockAsm8B:
4928 MOVL CX, BX
4929 SUBL 12(SP), BX
4930 SHRL $0x04, BX
4931 LEAL 4(CX)(BX*1), BX
4932 CMPL BX, 8(SP)
4933 JAE emit_remainder_encodeBlockAsm8B
4934 MOVQ (DX)(CX*1), SI
4935 MOVL BX, 20(SP)
4936 MOVQ $0x9e3779b1, R8
4937 MOVQ SI, R9
4938 MOVQ SI, R10
4939 SHRQ $0x08, R10
4940 SHLQ $0x20, R9
4941 IMULQ R8, R9
4942 SHRQ $0x38, R9
4943 SHLQ $0x20, R10
4944 IMULQ R8, R10
4945 SHRQ $0x38, R10
4946 MOVL 24(SP)(R9*4), BX
4947 MOVL 24(SP)(R10*4), DI
4948 MOVL CX, 24(SP)(R9*4)
4949 LEAL 1(CX), R9
4950 MOVL R9, 24(SP)(R10*4)
4951 MOVQ SI, R9
4952 SHRQ $0x10, R9
4953 SHLQ $0x20, R9
4954 IMULQ R8, R9
4955 SHRQ $0x38, R9
4956 MOVL CX, R8
4957 SUBL 16(SP), R8
4958 MOVL 1(DX)(R8*1), R10
4959 MOVQ SI, R8
4960 SHRQ $0x08, R8
4961 CMPL R8, R10
4962 JNE no_repeat_found_encodeBlockAsm8B
4963 LEAL 1(CX), SI
4964 MOVL 12(SP), DI
4965 MOVL SI, BX
4966 SUBL 16(SP), BX
4967 JZ repeat_extend_back_end_encodeBlockAsm8B
4968
4969repeat_extend_back_loop_encodeBlockAsm8B:
4970 CMPL SI, DI
4971 JBE repeat_extend_back_end_encodeBlockAsm8B
4972 MOVB -1(DX)(BX*1), R8
4973 MOVB -1(DX)(SI*1), R9
4974 CMPB R8, R9
4975 JNE repeat_extend_back_end_encodeBlockAsm8B
4976 LEAL -1(SI), SI
4977 DECL BX
4978 JNZ repeat_extend_back_loop_encodeBlockAsm8B
4979
4980repeat_extend_back_end_encodeBlockAsm8B:
4981 MOVL 12(SP), BX
4982 CMPL BX, SI
4983 JEQ emit_literal_done_repeat_emit_encodeBlockAsm8B
4984 MOVL SI, R8
4985 MOVL SI, 12(SP)
4986 LEAQ (DX)(BX*1), R9
4987 SUBL BX, R8
4988 LEAL -1(R8), BX
4989 CMPL BX, $0x3c
4990 JB one_byte_repeat_emit_encodeBlockAsm8B
4991 CMPL BX, $0x00000100
4992 JB two_bytes_repeat_emit_encodeBlockAsm8B
4993 JB three_bytes_repeat_emit_encodeBlockAsm8B
4994
4995three_bytes_repeat_emit_encodeBlockAsm8B:
4996 MOVB $0xf4, (AX)
4997 MOVW BX, 1(AX)
4998 ADDQ $0x03, AX
4999 JMP memmove_long_repeat_emit_encodeBlockAsm8B
5000
5001two_bytes_repeat_emit_encodeBlockAsm8B:
5002 MOVB $0xf0, (AX)
5003 MOVB BL, 1(AX)
5004 ADDQ $0x02, AX
5005 CMPL BX, $0x40
5006 JB memmove_repeat_emit_encodeBlockAsm8B
5007 JMP memmove_long_repeat_emit_encodeBlockAsm8B
5008
5009one_byte_repeat_emit_encodeBlockAsm8B:
5010 SHLB $0x02, BL
5011 MOVB BL, (AX)
5012 ADDQ $0x01, AX
5013
5014memmove_repeat_emit_encodeBlockAsm8B:
5015 LEAQ (AX)(R8*1), BX
5016
5017 // genMemMoveShort
5018 CMPQ R8, $0x08
5019 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_8
5020 CMPQ R8, $0x10
5021 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_8through16
5022 CMPQ R8, $0x20
5023 JBE emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_17through32
5024 JMP emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_33through64
5025
5026emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_8:
5027 MOVQ (R9), R10
5028 MOVQ R10, (AX)
5029 JMP memmove_end_copy_repeat_emit_encodeBlockAsm8B
5030
5031emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_8through16:
5032 MOVQ (R9), R10
5033 MOVQ -8(R9)(R8*1), R9
5034 MOVQ R10, (AX)
5035 MOVQ R9, -8(AX)(R8*1)
5036 JMP memmove_end_copy_repeat_emit_encodeBlockAsm8B
5037
5038emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_17through32:
5039 MOVOU (R9), X0
5040 MOVOU -16(R9)(R8*1), X1
5041 MOVOU X0, (AX)
5042 MOVOU X1, -16(AX)(R8*1)
5043 JMP memmove_end_copy_repeat_emit_encodeBlockAsm8B
5044
5045emit_lit_memmove_repeat_emit_encodeBlockAsm8B_memmove_move_33through64:
5046 MOVOU (R9), X0
5047 MOVOU 16(R9), X1
5048 MOVOU -32(R9)(R8*1), X2
5049 MOVOU -16(R9)(R8*1), X3
5050 MOVOU X0, (AX)
5051 MOVOU X1, 16(AX)
5052 MOVOU X2, -32(AX)(R8*1)
5053 MOVOU X3, -16(AX)(R8*1)
5054
5055memmove_end_copy_repeat_emit_encodeBlockAsm8B:
5056 MOVQ BX, AX
5057 JMP emit_literal_done_repeat_emit_encodeBlockAsm8B
5058
5059memmove_long_repeat_emit_encodeBlockAsm8B:
5060 LEAQ (AX)(R8*1), BX
5061
5062 // genMemMoveLong
5063 MOVOU (R9), X0
5064 MOVOU 16(R9), X1
5065 MOVOU -32(R9)(R8*1), X2
5066 MOVOU -16(R9)(R8*1), X3
5067 MOVQ R8, R11
5068 SHRQ $0x05, R11
5069 MOVQ AX, R10
5070 ANDL $0x0000001f, R10
5071 MOVQ $0x00000040, R12
5072 SUBQ R10, R12
5073 DECQ R11
5074 JA emit_lit_memmove_long_repeat_emit_encodeBlockAsm8Blarge_forward_sse_loop_32
5075 LEAQ -32(R9)(R12*1), R10
5076 LEAQ -32(AX)(R12*1), R13
5077
5078emit_lit_memmove_long_repeat_emit_encodeBlockAsm8Blarge_big_loop_back:
5079 MOVOU (R10), X4
5080 MOVOU 16(R10), X5
5081 MOVOA X4, (R13)
5082 MOVOA X5, 16(R13)
5083 ADDQ $0x20, R13
5084 ADDQ $0x20, R10
5085 ADDQ $0x20, R12
5086 DECQ R11
5087 JNA emit_lit_memmove_long_repeat_emit_encodeBlockAsm8Blarge_big_loop_back
5088
5089emit_lit_memmove_long_repeat_emit_encodeBlockAsm8Blarge_forward_sse_loop_32:
5090 MOVOU -32(R9)(R12*1), X4
5091 MOVOU -16(R9)(R12*1), X5
5092 MOVOA X4, -32(AX)(R12*1)
5093 MOVOA X5, -16(AX)(R12*1)
5094 ADDQ $0x20, R12
5095 CMPQ R8, R12
5096 JAE emit_lit_memmove_long_repeat_emit_encodeBlockAsm8Blarge_forward_sse_loop_32
5097 MOVOU X0, (AX)
5098 MOVOU X1, 16(AX)
5099 MOVOU X2, -32(AX)(R8*1)
5100 MOVOU X3, -16(AX)(R8*1)
5101 MOVQ BX, AX
5102
5103emit_literal_done_repeat_emit_encodeBlockAsm8B:
5104 ADDL $0x05, CX
5105 MOVL CX, BX
5106 SUBL 16(SP), BX
5107 MOVQ src_len+32(FP), R8
5108 SUBL CX, R8
5109 LEAQ (DX)(CX*1), R9
5110 LEAQ (DX)(BX*1), BX
5111
5112 // matchLen
5113 XORL R11, R11
5114
5115matchlen_loopback_16_repeat_extend_encodeBlockAsm8B:
5116 CMPL R8, $0x10
5117 JB matchlen_match8_repeat_extend_encodeBlockAsm8B
5118 MOVQ (R9)(R11*1), R10
5119 MOVQ 8(R9)(R11*1), R12
5120 XORQ (BX)(R11*1), R10
5121 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm8B
5122 XORQ 8(BX)(R11*1), R12
5123 JNZ matchlen_bsf_16repeat_extend_encodeBlockAsm8B
5124 LEAL -16(R8), R8
5125 LEAL 16(R11), R11
5126 JMP matchlen_loopback_16_repeat_extend_encodeBlockAsm8B
5127
5128matchlen_bsf_16repeat_extend_encodeBlockAsm8B:
5129#ifdef GOAMD64_v3
5130 TZCNTQ R12, R12
5131
5132#else
5133 BSFQ R12, R12
5134
5135#endif
5136 SARQ $0x03, R12
5137 LEAL 8(R11)(R12*1), R11
5138 JMP repeat_extend_forward_end_encodeBlockAsm8B
5139
5140matchlen_match8_repeat_extend_encodeBlockAsm8B:
5141 CMPL R8, $0x08
5142 JB matchlen_match4_repeat_extend_encodeBlockAsm8B
5143 MOVQ (R9)(R11*1), R10
5144 XORQ (BX)(R11*1), R10
5145 JNZ matchlen_bsf_8_repeat_extend_encodeBlockAsm8B
5146 LEAL -8(R8), R8
5147 LEAL 8(R11), R11
5148 JMP matchlen_match4_repeat_extend_encodeBlockAsm8B
5149
5150matchlen_bsf_8_repeat_extend_encodeBlockAsm8B:
5151#ifdef GOAMD64_v3
5152 TZCNTQ R10, R10
5153
5154#else
5155 BSFQ R10, R10
5156
5157#endif
5158 SARQ $0x03, R10
5159 LEAL (R11)(R10*1), R11
5160 JMP repeat_extend_forward_end_encodeBlockAsm8B
5161
5162matchlen_match4_repeat_extend_encodeBlockAsm8B:
5163 CMPL R8, $0x04
5164 JB matchlen_match2_repeat_extend_encodeBlockAsm8B
5165 MOVL (R9)(R11*1), R10
5166 CMPL (BX)(R11*1), R10
5167 JNE matchlen_match2_repeat_extend_encodeBlockAsm8B
5168 LEAL -4(R8), R8
5169 LEAL 4(R11), R11
5170
5171matchlen_match2_repeat_extend_encodeBlockAsm8B:
5172 CMPL R8, $0x01
5173 JE matchlen_match1_repeat_extend_encodeBlockAsm8B
5174 JB repeat_extend_forward_end_encodeBlockAsm8B
5175 MOVW (R9)(R11*1), R10
5176 CMPW (BX)(R11*1), R10
5177 JNE matchlen_match1_repeat_extend_encodeBlockAsm8B
5178 LEAL 2(R11), R11
5179 SUBL $0x02, R8
5180 JZ repeat_extend_forward_end_encodeBlockAsm8B
5181
5182matchlen_match1_repeat_extend_encodeBlockAsm8B:
5183 MOVB (R9)(R11*1), R10
5184 CMPB (BX)(R11*1), R10
5185 JNE repeat_extend_forward_end_encodeBlockAsm8B
5186 LEAL 1(R11), R11
5187
5188repeat_extend_forward_end_encodeBlockAsm8B:
5189 ADDL R11, CX
5190 MOVL CX, BX
5191 SUBL SI, BX
5192 MOVL 16(SP), SI
5193 TESTL DI, DI
5194 JZ repeat_as_copy_encodeBlockAsm8B
5195
5196 // emitRepeat
5197 MOVL BX, SI
5198 LEAL -4(BX), BX
5199 CMPL SI, $0x08
5200 JBE repeat_two_match_repeat_encodeBlockAsm8B
5201 CMPL SI, $0x0c
5202 JAE cant_repeat_two_offset_match_repeat_encodeBlockAsm8B
5203
5204cant_repeat_two_offset_match_repeat_encodeBlockAsm8B:
5205 CMPL BX, $0x00000104
5206 JB repeat_three_match_repeat_encodeBlockAsm8B
5207 LEAL -256(BX), BX
5208 MOVW $0x0019, (AX)
5209 MOVW BX, 2(AX)
5210 ADDQ $0x04, AX
5211 JMP repeat_end_emit_encodeBlockAsm8B
5212
5213repeat_three_match_repeat_encodeBlockAsm8B:
5214 LEAL -4(BX), BX
5215 MOVW $0x0015, (AX)
5216 MOVB BL, 2(AX)
5217 ADDQ $0x03, AX
5218 JMP repeat_end_emit_encodeBlockAsm8B
5219
5220repeat_two_match_repeat_encodeBlockAsm8B:
5221 SHLL $0x02, BX
5222 ORL $0x01, BX
5223 MOVW BX, (AX)
5224 ADDQ $0x02, AX
5225 JMP repeat_end_emit_encodeBlockAsm8B
5226 XORQ DI, DI
5227 LEAL 1(DI)(BX*4), BX
5228 MOVB SI, 1(AX)
5229 SARL $0x08, SI
5230 SHLL $0x05, SI
5231 ORL SI, BX
5232 MOVB BL, (AX)
5233 ADDQ $0x02, AX
5234 JMP repeat_end_emit_encodeBlockAsm8B
5235
5236repeat_as_copy_encodeBlockAsm8B:
5237 // emitCopy
5238 CMPL BX, $0x40
5239 JBE two_byte_offset_short_repeat_as_copy_encodeBlockAsm8B
5240 CMPL SI, $0x00000800
5241 JAE long_offset_short_repeat_as_copy_encodeBlockAsm8B
5242 MOVL $0x00000001, DI
5243 LEAL 16(DI), DI
5244 MOVB SI, 1(AX)
5245 SHRL $0x08, SI
5246 SHLL $0x05, SI
5247 ORL SI, DI
5248 MOVB DI, (AX)
5249 ADDQ $0x02, AX
5250 SUBL $0x08, BX
5251
5252 // emitRepeat
5253 LEAL -4(BX), BX
5254 JMP cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm8B_emit_copy_short_2b
5255 MOVL BX, SI
5256 LEAL -4(BX), BX
5257 CMPL SI, $0x08
5258 JBE repeat_two_repeat_as_copy_encodeBlockAsm8B_emit_copy_short_2b
5259 CMPL SI, $0x0c
5260 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm8B_emit_copy_short_2b
5261
5262cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm8B_emit_copy_short_2b:
5263 CMPL BX, $0x00000104
5264 JB repeat_three_repeat_as_copy_encodeBlockAsm8B_emit_copy_short_2b
5265 LEAL -256(BX), BX
5266 MOVW $0x0019, (AX)
5267 MOVW BX, 2(AX)
5268 ADDQ $0x04, AX
5269 JMP repeat_end_emit_encodeBlockAsm8B
5270
5271repeat_three_repeat_as_copy_encodeBlockAsm8B_emit_copy_short_2b:
5272 LEAL -4(BX), BX
5273 MOVW $0x0015, (AX)
5274 MOVB BL, 2(AX)
5275 ADDQ $0x03, AX
5276 JMP repeat_end_emit_encodeBlockAsm8B
5277
5278repeat_two_repeat_as_copy_encodeBlockAsm8B_emit_copy_short_2b:
5279 SHLL $0x02, BX
5280 ORL $0x01, BX
5281 MOVW BX, (AX)
5282 ADDQ $0x02, AX
5283 JMP repeat_end_emit_encodeBlockAsm8B
5284 XORQ DI, DI
5285 LEAL 1(DI)(BX*4), BX
5286 MOVB SI, 1(AX)
5287 SARL $0x08, SI
5288 SHLL $0x05, SI
5289 ORL SI, BX
5290 MOVB BL, (AX)
5291 ADDQ $0x02, AX
5292 JMP repeat_end_emit_encodeBlockAsm8B
5293
5294long_offset_short_repeat_as_copy_encodeBlockAsm8B:
5295 MOVB $0xee, (AX)
5296 MOVW SI, 1(AX)
5297 LEAL -60(BX), BX
5298 ADDQ $0x03, AX
5299
5300 // emitRepeat
5301 MOVL BX, SI
5302 LEAL -4(BX), BX
5303 CMPL SI, $0x08
5304 JBE repeat_two_repeat_as_copy_encodeBlockAsm8B_emit_copy_short
5305 CMPL SI, $0x0c
5306 JAE cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm8B_emit_copy_short
5307
5308cant_repeat_two_offset_repeat_as_copy_encodeBlockAsm8B_emit_copy_short:
5309 CMPL BX, $0x00000104
5310 JB repeat_three_repeat_as_copy_encodeBlockAsm8B_emit_copy_short
5311 LEAL -256(BX), BX
5312 MOVW $0x0019, (AX)
5313 MOVW BX, 2(AX)
5314 ADDQ $0x04, AX
5315 JMP repeat_end_emit_encodeBlockAsm8B
5316
5317repeat_three_repeat_as_copy_encodeBlockAsm8B_emit_copy_short:
5318 LEAL -4(BX), BX
5319 MOVW $0x0015, (AX)
5320 MOVB BL, 2(AX)
5321 ADDQ $0x03, AX
5322 JMP repeat_end_emit_encodeBlockAsm8B
5323
5324repeat_two_repeat_as_copy_encodeBlockAsm8B_emit_copy_short:
5325 SHLL $0x02, BX
5326 ORL $0x01, BX
5327 MOVW BX, (AX)
5328 ADDQ $0x02, AX
5329 JMP repeat_end_emit_encodeBlockAsm8B
5330 XORQ DI, DI
5331 LEAL 1(DI)(BX*4), BX
5332 MOVB SI, 1(AX)
5333 SARL $0x08, SI
5334 SHLL $0x05, SI
5335 ORL SI, BX
5336 MOVB BL, (AX)
5337 ADDQ $0x02, AX
5338 JMP repeat_end_emit_encodeBlockAsm8B
5339
5340two_byte_offset_short_repeat_as_copy_encodeBlockAsm8B:
5341 MOVL BX, DI
5342 SHLL $0x02, DI
5343 CMPL BX, $0x0c
5344 JAE emit_copy_three_repeat_as_copy_encodeBlockAsm8B
5345 LEAL -15(DI), DI
5346 MOVB SI, 1(AX)
5347 SHRL $0x08, SI
5348 SHLL $0x05, SI
5349 ORL SI, DI
5350 MOVB DI, (AX)
5351 ADDQ $0x02, AX
5352 JMP repeat_end_emit_encodeBlockAsm8B
5353
5354emit_copy_three_repeat_as_copy_encodeBlockAsm8B:
5355 LEAL -2(DI), DI
5356 MOVB DI, (AX)
5357 MOVW SI, 1(AX)
5358 ADDQ $0x03, AX
5359
5360repeat_end_emit_encodeBlockAsm8B:
5361 MOVL CX, 12(SP)
5362 JMP search_loop_encodeBlockAsm8B
5363
5364no_repeat_found_encodeBlockAsm8B:
5365 CMPL (DX)(BX*1), SI
5366 JEQ candidate_match_encodeBlockAsm8B
5367 SHRQ $0x08, SI
5368 MOVL 24(SP)(R9*4), BX
5369 LEAL 2(CX), R8
5370 CMPL (DX)(DI*1), SI
5371 JEQ candidate2_match_encodeBlockAsm8B
5372 MOVL R8, 24(SP)(R9*4)
5373 SHRQ $0x08, SI
5374 CMPL (DX)(BX*1), SI
5375 JEQ candidate3_match_encodeBlockAsm8B
5376 MOVL 20(SP), CX
5377 JMP search_loop_encodeBlockAsm8B
5378
5379candidate3_match_encodeBlockAsm8B:
5380 ADDL $0x02, CX
5381 JMP candidate_match_encodeBlockAsm8B
5382
5383candidate2_match_encodeBlockAsm8B:
5384 MOVL R8, 24(SP)(R9*4)
5385 INCL CX
5386 MOVL DI, BX
5387
5388candidate_match_encodeBlockAsm8B:
5389 MOVL 12(SP), SI
5390 TESTL BX, BX
5391 JZ match_extend_back_end_encodeBlockAsm8B
5392
5393match_extend_back_loop_encodeBlockAsm8B:
5394 CMPL CX, SI
5395 JBE match_extend_back_end_encodeBlockAsm8B
5396 MOVB -1(DX)(BX*1), DI
5397 MOVB -1(DX)(CX*1), R8
5398 CMPB DI, R8
5399 JNE match_extend_back_end_encodeBlockAsm8B
5400 LEAL -1(CX), CX
5401 DECL BX
5402 JZ match_extend_back_end_encodeBlockAsm8B
5403 JMP match_extend_back_loop_encodeBlockAsm8B
5404
5405match_extend_back_end_encodeBlockAsm8B:
5406 MOVL CX, SI
5407 SUBL 12(SP), SI
5408 LEAQ 3(AX)(SI*1), SI
5409 CMPQ SI, (SP)
5410 JB match_dst_size_check_encodeBlockAsm8B
5411 MOVQ $0x00000000, ret+48(FP)
5412 RET
5413
5414match_dst_size_check_encodeBlockAsm8B:
5415 MOVL CX, SI
5416 MOVL 12(SP), DI
5417 CMPL DI, SI
5418 JEQ emit_literal_done_match_emit_encodeBlockAsm8B
5419 MOVL SI, R8
5420 MOVL SI, 12(SP)
5421 LEAQ (DX)(DI*1), SI
5422 SUBL DI, R8
5423 LEAL -1(R8), DI
5424 CMPL DI, $0x3c
5425 JB one_byte_match_emit_encodeBlockAsm8B
5426 CMPL DI, $0x00000100
5427 JB two_bytes_match_emit_encodeBlockAsm8B
5428 JB three_bytes_match_emit_encodeBlockAsm8B
5429
5430three_bytes_match_emit_encodeBlockAsm8B:
5431 MOVB $0xf4, (AX)
5432 MOVW DI, 1(AX)
5433 ADDQ $0x03, AX
5434 JMP memmove_long_match_emit_encodeBlockAsm8B
5435
5436two_bytes_match_emit_encodeBlockAsm8B:
5437 MOVB $0xf0, (AX)
5438 MOVB DI, 1(AX)
5439 ADDQ $0x02, AX
5440 CMPL DI, $0x40
5441 JB memmove_match_emit_encodeBlockAsm8B
5442 JMP memmove_long_match_emit_encodeBlockAsm8B
5443
5444one_byte_match_emit_encodeBlockAsm8B:
5445 SHLB $0x02, DI
5446 MOVB DI, (AX)
5447 ADDQ $0x01, AX
5448
5449memmove_match_emit_encodeBlockAsm8B:
5450 LEAQ (AX)(R8*1), DI
5451
5452 // genMemMoveShort
5453 CMPQ R8, $0x08
5454 JBE emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_8
5455 CMPQ R8, $0x10
5456 JBE emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_8through16
5457 CMPQ R8, $0x20
5458 JBE emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_17through32
5459 JMP emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_33through64
5460
5461emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_8:
5462 MOVQ (SI), R9
5463 MOVQ R9, (AX)
5464 JMP memmove_end_copy_match_emit_encodeBlockAsm8B
5465
5466emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_8through16:
5467 MOVQ (SI), R9
5468 MOVQ -8(SI)(R8*1), SI
5469 MOVQ R9, (AX)
5470 MOVQ SI, -8(AX)(R8*1)
5471 JMP memmove_end_copy_match_emit_encodeBlockAsm8B
5472
5473emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_17through32:
5474 MOVOU (SI), X0
5475 MOVOU -16(SI)(R8*1), X1
5476 MOVOU X0, (AX)
5477 MOVOU X1, -16(AX)(R8*1)
5478 JMP memmove_end_copy_match_emit_encodeBlockAsm8B
5479
5480emit_lit_memmove_match_emit_encodeBlockAsm8B_memmove_move_33through64:
5481 MOVOU (SI), X0
5482 MOVOU 16(SI), X1
5483 MOVOU -32(SI)(R8*1), X2
5484 MOVOU -16(SI)(R8*1), X3
5485 MOVOU X0, (AX)
5486 MOVOU X1, 16(AX)
5487 MOVOU X2, -32(AX)(R8*1)
5488 MOVOU X3, -16(AX)(R8*1)
5489
5490memmove_end_copy_match_emit_encodeBlockAsm8B:
5491 MOVQ DI, AX
5492 JMP emit_literal_done_match_emit_encodeBlockAsm8B
5493
5494memmove_long_match_emit_encodeBlockAsm8B:
5495 LEAQ (AX)(R8*1), DI
5496
5497 // genMemMoveLong
5498 MOVOU (SI), X0
5499 MOVOU 16(SI), X1
5500 MOVOU -32(SI)(R8*1), X2
5501 MOVOU -16(SI)(R8*1), X3
5502 MOVQ R8, R10
5503 SHRQ $0x05, R10
5504 MOVQ AX, R9
5505 ANDL $0x0000001f, R9
5506 MOVQ $0x00000040, R11
5507 SUBQ R9, R11
5508 DECQ R10
5509 JA emit_lit_memmove_long_match_emit_encodeBlockAsm8Blarge_forward_sse_loop_32
5510 LEAQ -32(SI)(R11*1), R9
5511 LEAQ -32(AX)(R11*1), R12
5512
5513emit_lit_memmove_long_match_emit_encodeBlockAsm8Blarge_big_loop_back:
5514 MOVOU (R9), X4
5515 MOVOU 16(R9), X5
5516 MOVOA X4, (R12)
5517 MOVOA X5, 16(R12)
5518 ADDQ $0x20, R12
5519 ADDQ $0x20, R9
5520 ADDQ $0x20, R11
5521 DECQ R10
5522 JNA emit_lit_memmove_long_match_emit_encodeBlockAsm8Blarge_big_loop_back
5523
5524emit_lit_memmove_long_match_emit_encodeBlockAsm8Blarge_forward_sse_loop_32:
5525 MOVOU -32(SI)(R11*1), X4
5526 MOVOU -16(SI)(R11*1), X5
5527 MOVOA X4, -32(AX)(R11*1)
5528 MOVOA X5, -16(AX)(R11*1)
5529 ADDQ $0x20, R11
5530 CMPQ R8, R11
5531 JAE emit_lit_memmove_long_match_emit_encodeBlockAsm8Blarge_forward_sse_loop_32
5532 MOVOU X0, (AX)
5533 MOVOU X1, 16(AX)
5534 MOVOU X2, -32(AX)(R8*1)
5535 MOVOU X3, -16(AX)(R8*1)
5536 MOVQ DI, AX
5537
5538emit_literal_done_match_emit_encodeBlockAsm8B:
5539match_nolit_loop_encodeBlockAsm8B:
5540 MOVL CX, SI
5541 SUBL BX, SI
5542 MOVL SI, 16(SP)
5543 ADDL $0x04, CX
5544 ADDL $0x04, BX
5545 MOVQ src_len+32(FP), SI
5546 SUBL CX, SI
5547 LEAQ (DX)(CX*1), DI
5548 LEAQ (DX)(BX*1), BX
5549
5550 // matchLen
5551 XORL R9, R9
5552
5553matchlen_loopback_16_match_nolit_encodeBlockAsm8B:
5554 CMPL SI, $0x10
5555 JB matchlen_match8_match_nolit_encodeBlockAsm8B
5556 MOVQ (DI)(R9*1), R8
5557 MOVQ 8(DI)(R9*1), R10
5558 XORQ (BX)(R9*1), R8
5559 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm8B
5560 XORQ 8(BX)(R9*1), R10
5561 JNZ matchlen_bsf_16match_nolit_encodeBlockAsm8B
5562 LEAL -16(SI), SI
5563 LEAL 16(R9), R9
5564 JMP matchlen_loopback_16_match_nolit_encodeBlockAsm8B
5565
5566matchlen_bsf_16match_nolit_encodeBlockAsm8B:
5567#ifdef GOAMD64_v3
5568 TZCNTQ R10, R10
5569
5570#else
5571 BSFQ R10, R10
5572
5573#endif
5574 SARQ $0x03, R10
5575 LEAL 8(R9)(R10*1), R9
5576 JMP match_nolit_end_encodeBlockAsm8B
5577
5578matchlen_match8_match_nolit_encodeBlockAsm8B:
5579 CMPL SI, $0x08
5580 JB matchlen_match4_match_nolit_encodeBlockAsm8B
5581 MOVQ (DI)(R9*1), R8
5582 XORQ (BX)(R9*1), R8
5583 JNZ matchlen_bsf_8_match_nolit_encodeBlockAsm8B
5584 LEAL -8(SI), SI
5585 LEAL 8(R9), R9
5586 JMP matchlen_match4_match_nolit_encodeBlockAsm8B
5587
5588matchlen_bsf_8_match_nolit_encodeBlockAsm8B:
5589#ifdef GOAMD64_v3
5590 TZCNTQ R8, R8
5591
5592#else
5593 BSFQ R8, R8
5594
5595#endif
5596 SARQ $0x03, R8
5597 LEAL (R9)(R8*1), R9
5598 JMP match_nolit_end_encodeBlockAsm8B
5599
5600matchlen_match4_match_nolit_encodeBlockAsm8B:
5601 CMPL SI, $0x04
5602 JB matchlen_match2_match_nolit_encodeBlockAsm8B
5603 MOVL (DI)(R9*1), R8
5604 CMPL (BX)(R9*1), R8
5605 JNE matchlen_match2_match_nolit_encodeBlockAsm8B
5606 LEAL -4(SI), SI
5607 LEAL 4(R9), R9
5608
5609matchlen_match2_match_nolit_encodeBlockAsm8B:
5610 CMPL SI, $0x01
5611 JE matchlen_match1_match_nolit_encodeBlockAsm8B
5612 JB match_nolit_end_encodeBlockAsm8B
5613 MOVW (DI)(R9*1), R8
5614 CMPW (BX)(R9*1), R8
5615 JNE matchlen_match1_match_nolit_encodeBlockAsm8B
5616 LEAL 2(R9), R9
5617 SUBL $0x02, SI
5618 JZ match_nolit_end_encodeBlockAsm8B
5619
5620matchlen_match1_match_nolit_encodeBlockAsm8B:
5621 MOVB (DI)(R9*1), R8
5622 CMPB (BX)(R9*1), R8
5623 JNE match_nolit_end_encodeBlockAsm8B
5624 LEAL 1(R9), R9
5625
5626match_nolit_end_encodeBlockAsm8B:
5627 ADDL R9, CX
5628 MOVL 16(SP), BX
5629 ADDL $0x04, R9
5630 MOVL CX, 12(SP)
5631
5632 // emitCopy
5633 CMPL R9, $0x40
5634 JBE two_byte_offset_short_match_nolit_encodeBlockAsm8B
5635 CMPL BX, $0x00000800
5636 JAE long_offset_short_match_nolit_encodeBlockAsm8B
5637 MOVL $0x00000001, SI
5638 LEAL 16(SI), SI
5639 MOVB BL, 1(AX)
5640 SHRL $0x08, BX
5641 SHLL $0x05, BX
5642 ORL BX, SI
5643 MOVB SI, (AX)
5644 ADDQ $0x02, AX
5645 SUBL $0x08, R9
5646
5647 // emitRepeat
5648 LEAL -4(R9), R9
5649 JMP cant_repeat_two_offset_match_nolit_encodeBlockAsm8B_emit_copy_short_2b
5650 MOVL R9, BX
5651 LEAL -4(R9), R9
5652 CMPL BX, $0x08
5653 JBE repeat_two_match_nolit_encodeBlockAsm8B_emit_copy_short_2b
5654 CMPL BX, $0x0c
5655 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm8B_emit_copy_short_2b
5656
5657cant_repeat_two_offset_match_nolit_encodeBlockAsm8B_emit_copy_short_2b:
5658 CMPL R9, $0x00000104
5659 JB repeat_three_match_nolit_encodeBlockAsm8B_emit_copy_short_2b
5660 LEAL -256(R9), R9
5661 MOVW $0x0019, (AX)
5662 MOVW R9, 2(AX)
5663 ADDQ $0x04, AX
5664 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5665
5666repeat_three_match_nolit_encodeBlockAsm8B_emit_copy_short_2b:
5667 LEAL -4(R9), R9
5668 MOVW $0x0015, (AX)
5669 MOVB R9, 2(AX)
5670 ADDQ $0x03, AX
5671 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5672
5673repeat_two_match_nolit_encodeBlockAsm8B_emit_copy_short_2b:
5674 SHLL $0x02, R9
5675 ORL $0x01, R9
5676 MOVW R9, (AX)
5677 ADDQ $0x02, AX
5678 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5679 XORQ SI, SI
5680 LEAL 1(SI)(R9*4), R9
5681 MOVB BL, 1(AX)
5682 SARL $0x08, BX
5683 SHLL $0x05, BX
5684 ORL BX, R9
5685 MOVB R9, (AX)
5686 ADDQ $0x02, AX
5687 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5688
5689long_offset_short_match_nolit_encodeBlockAsm8B:
5690 MOVB $0xee, (AX)
5691 MOVW BX, 1(AX)
5692 LEAL -60(R9), R9
5693 ADDQ $0x03, AX
5694
5695 // emitRepeat
5696 MOVL R9, BX
5697 LEAL -4(R9), R9
5698 CMPL BX, $0x08
5699 JBE repeat_two_match_nolit_encodeBlockAsm8B_emit_copy_short
5700 CMPL BX, $0x0c
5701 JAE cant_repeat_two_offset_match_nolit_encodeBlockAsm8B_emit_copy_short
5702
5703cant_repeat_two_offset_match_nolit_encodeBlockAsm8B_emit_copy_short:
5704 CMPL R9, $0x00000104
5705 JB repeat_three_match_nolit_encodeBlockAsm8B_emit_copy_short
5706 LEAL -256(R9), R9
5707 MOVW $0x0019, (AX)
5708 MOVW R9, 2(AX)
5709 ADDQ $0x04, AX
5710 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5711
5712repeat_three_match_nolit_encodeBlockAsm8B_emit_copy_short:
5713 LEAL -4(R9), R9
5714 MOVW $0x0015, (AX)
5715 MOVB R9, 2(AX)
5716 ADDQ $0x03, AX
5717 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5718
5719repeat_two_match_nolit_encodeBlockAsm8B_emit_copy_short:
5720 SHLL $0x02, R9
5721 ORL $0x01, R9
5722 MOVW R9, (AX)
5723 ADDQ $0x02, AX
5724 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5725 XORQ SI, SI
5726 LEAL 1(SI)(R9*4), R9
5727 MOVB BL, 1(AX)
5728 SARL $0x08, BX
5729 SHLL $0x05, BX
5730 ORL BX, R9
5731 MOVB R9, (AX)
5732 ADDQ $0x02, AX
5733 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5734
5735two_byte_offset_short_match_nolit_encodeBlockAsm8B:
5736 MOVL R9, SI
5737 SHLL $0x02, SI
5738 CMPL R9, $0x0c
5739 JAE emit_copy_three_match_nolit_encodeBlockAsm8B
5740 LEAL -15(SI), SI
5741 MOVB BL, 1(AX)
5742 SHRL $0x08, BX
5743 SHLL $0x05, BX
5744 ORL BX, SI
5745 MOVB SI, (AX)
5746 ADDQ $0x02, AX
5747 JMP match_nolit_emitcopy_end_encodeBlockAsm8B
5748
5749emit_copy_three_match_nolit_encodeBlockAsm8B:
5750 LEAL -2(SI), SI
5751 MOVB SI, (AX)
5752 MOVW BX, 1(AX)
5753 ADDQ $0x03, AX
5754
5755match_nolit_emitcopy_end_encodeBlockAsm8B:
5756 CMPL CX, 8(SP)
5757 JAE emit_remainder_encodeBlockAsm8B
5758 MOVQ -2(DX)(CX*1), SI
5759 CMPQ AX, (SP)
5760 JB match_nolit_dst_ok_encodeBlockAsm8B
5761 MOVQ $0x00000000, ret+48(FP)
5762 RET
5763
5764match_nolit_dst_ok_encodeBlockAsm8B:
5765 MOVQ $0x9e3779b1, R8
5766 MOVQ SI, DI
5767 SHRQ $0x10, SI
5768 MOVQ SI, BX
5769 SHLQ $0x20, DI
5770 IMULQ R8, DI
5771 SHRQ $0x38, DI
5772 SHLQ $0x20, BX
5773 IMULQ R8, BX
5774 SHRQ $0x38, BX
5775 LEAL -2(CX), R8
5776 LEAQ 24(SP)(BX*4), R9
5777 MOVL (R9), BX
5778 MOVL R8, 24(SP)(DI*4)
5779 MOVL CX, (R9)
5780 CMPL (DX)(BX*1), SI
5781 JEQ match_nolit_loop_encodeBlockAsm8B
5782 INCL CX
5783 JMP search_loop_encodeBlockAsm8B
5784
5785emit_remainder_encodeBlockAsm8B:
5786 MOVQ src_len+32(FP), CX
5787 SUBL 12(SP), CX
5788 LEAQ 3(AX)(CX*1), CX
5789 CMPQ CX, (SP)
5790 JB emit_remainder_ok_encodeBlockAsm8B
5791 MOVQ $0x00000000, ret+48(FP)
5792 RET
5793
5794emit_remainder_ok_encodeBlockAsm8B:
5795 MOVQ src_len+32(FP), CX
5796 MOVL 12(SP), BX
5797 CMPL BX, CX
5798 JEQ emit_literal_done_emit_remainder_encodeBlockAsm8B
5799 MOVL CX, SI
5800 MOVL CX, 12(SP)
5801 LEAQ (DX)(BX*1), CX
5802 SUBL BX, SI
5803 LEAL -1(SI), DX
5804 CMPL DX, $0x3c
5805 JB one_byte_emit_remainder_encodeBlockAsm8B
5806 CMPL DX, $0x00000100
5807 JB two_bytes_emit_remainder_encodeBlockAsm8B
5808 JB three_bytes_emit_remainder_encodeBlockAsm8B
5809
5810three_bytes_emit_remainder_encodeBlockAsm8B:
5811 MOVB $0xf4, (AX)
5812 MOVW DX, 1(AX)
5813 ADDQ $0x03, AX
5814 JMP memmove_long_emit_remainder_encodeBlockAsm8B
5815
5816two_bytes_emit_remainder_encodeBlockAsm8B:
5817 MOVB $0xf0, (AX)
5818 MOVB DL, 1(AX)
5819 ADDQ $0x02, AX
5820 CMPL DX, $0x40
5821 JB memmove_emit_remainder_encodeBlockAsm8B
5822 JMP memmove_long_emit_remainder_encodeBlockAsm8B
5823
5824one_byte_emit_remainder_encodeBlockAsm8B:
5825 SHLB $0x02, DL
5826 MOVB DL, (AX)
5827 ADDQ $0x01, AX
5828
5829memmove_emit_remainder_encodeBlockAsm8B:
5830 LEAQ (AX)(SI*1), DX
5831 MOVL SI, BX
5832
5833 // genMemMoveShort
5834 CMPQ BX, $0x03
5835 JB emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_1or2
5836 JE emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_3
5837 CMPQ BX, $0x08
5838 JB emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_4through7
5839 CMPQ BX, $0x10
5840 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_8through16
5841 CMPQ BX, $0x20
5842 JBE emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_17through32
5843 JMP emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_33through64
5844
5845emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_1or2:
5846 MOVB (CX), SI
5847 MOVB -1(CX)(BX*1), CL
5848 MOVB SI, (AX)
5849 MOVB CL, -1(AX)(BX*1)
5850 JMP memmove_end_copy_emit_remainder_encodeBlockAsm8B
5851
5852emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_3:
5853 MOVW (CX), SI
5854 MOVB 2(CX), CL
5855 MOVW SI, (AX)
5856 MOVB CL, 2(AX)
5857 JMP memmove_end_copy_emit_remainder_encodeBlockAsm8B
5858
5859emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_4through7:
5860 MOVL (CX), SI
5861 MOVL -4(CX)(BX*1), CX
5862 MOVL SI, (AX)
5863 MOVL CX, -4(AX)(BX*1)
5864 JMP memmove_end_copy_emit_remainder_encodeBlockAsm8B
5865
5866emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_8through16:
5867 MOVQ (CX), SI
5868 MOVQ -8(CX)(BX*1), CX
5869 MOVQ SI, (AX)
5870 MOVQ CX, -8(AX)(BX*1)
5871 JMP memmove_end_copy_emit_remainder_encodeBlockAsm8B
5872
5873emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_17through32:
5874 MOVOU (CX), X0
5875 MOVOU -16(CX)(BX*1), X1
5876 MOVOU X0, (AX)
5877 MOVOU X1, -16(AX)(BX*1)
5878 JMP memmove_end_copy_emit_remainder_encodeBlockAsm8B
5879
5880emit_lit_memmove_emit_remainder_encodeBlockAsm8B_memmove_move_33through64:
5881 MOVOU (CX), X0
5882 MOVOU 16(CX), X1
5883 MOVOU -32(CX)(BX*1), X2
5884 MOVOU -16(CX)(BX*1), X3
5885 MOVOU X0, (AX)
5886 MOVOU X1, 16(AX)
5887 MOVOU X2, -32(AX)(BX*1)
5888 MOVOU X3, -16(AX)(BX*1)
5889
5890memmove_end_copy_emit_remainder_encodeBlockAsm8B:
5891 MOVQ DX, AX
5892 JMP emit_literal_done_emit_remainder_encodeBlockAsm8B
5893
5894memmove_long_emit_remainder_encodeBlockAsm8B:
5895 LEAQ (AX)(SI*1), DX
5896 MOVL SI, BX
5897
5898 // genMemMoveLong
5899 MOVOU (CX), X0
5900 MOVOU 16(CX), X1
5901 MOVOU -32(CX)(BX*1), X2
5902 MOVOU -16(CX)(BX*1), X3
5903 MOVQ BX, DI
5904 SHRQ $0x05, DI
5905 MOVQ AX, SI
5906 ANDL $0x0000001f, SI
5907 MOVQ $0x00000040, R8
5908 SUBQ SI, R8
5909 DECQ DI
5910 JA emit_lit_memmove_long_emit_remainder_encodeBlockAsm8Blarge_forward_sse_loop_32
5911 LEAQ -32(CX)(R8*1), SI
5912 LEAQ -32(AX)(R8*1), R9
5913
5914emit_lit_memmove_long_emit_remainder_encodeBlockAsm8Blarge_big_loop_back:
5915 MOVOU (SI), X4
5916 MOVOU 16(SI), X5
5917 MOVOA X4, (R9)
5918 MOVOA X5, 16(R9)
5919 ADDQ $0x20, R9
5920 ADDQ $0x20, SI
5921 ADDQ $0x20, R8
5922 DECQ DI
5923 JNA emit_lit_memmove_long_emit_remainder_encodeBlockAsm8Blarge_big_loop_back
5924
5925emit_lit_memmove_long_emit_remainder_encodeBlockAsm8Blarge_forward_sse_loop_32:
5926 MOVOU -32(CX)(R8*1), X4
5927 MOVOU -16(CX)(R8*1), X5
5928 MOVOA X4, -32(AX)(R8*1)
5929 MOVOA X5, -16(AX)(R8*1)
5930 ADDQ $0x20, R8
5931 CMPQ BX, R8
5932 JAE emit_lit_memmove_long_emit_remainder_encodeBlockAsm8Blarge_forward_sse_loop_32
5933 MOVOU X0, (AX)
5934 MOVOU X1, 16(AX)
5935 MOVOU X2, -32(AX)(BX*1)
5936 MOVOU X3, -16(AX)(BX*1)
5937 MOVQ DX, AX
5938
5939emit_literal_done_emit_remainder_encodeBlockAsm8B:
5940 MOVQ dst_base+0(FP), CX
5941 SUBQ CX, AX
5942 MOVQ AX, ret+48(FP)
5943 RET
5944
5945// func encodeBetterBlockAsm(dst []byte, src []byte) int
5946// Requires: BMI, SSE2
5947TEXT ·encodeBetterBlockAsm(SB), $589848-56
5948 MOVQ dst_base+0(FP), AX
5949 MOVQ $0x00001200, CX
5950 LEAQ 24(SP), DX
5951 PXOR X0, X0
5952
5953zero_loop_encodeBetterBlockAsm:
5954 MOVOU X0, (DX)
5955 MOVOU X0, 16(DX)
5956 MOVOU X0, 32(DX)
5957 MOVOU X0, 48(DX)
5958 MOVOU X0, 64(DX)
5959 MOVOU X0, 80(DX)
5960 MOVOU X0, 96(DX)
5961 MOVOU X0, 112(DX)
5962 ADDQ $0x80, DX
5963 DECQ CX
5964 JNZ zero_loop_encodeBetterBlockAsm
5965 MOVL $0x00000000, 12(SP)
5966 MOVQ src_len+32(FP), CX
5967 LEAQ -6(CX), DX
5968 LEAQ -8(CX), BX
5969 MOVL BX, 8(SP)
5970 SHRQ $0x05, CX
5971 SUBL CX, DX
5972 LEAQ (AX)(DX*1), DX
5973 MOVQ DX, (SP)
5974 MOVL $0x00000001, CX
5975 MOVL $0x00000000, 16(SP)
5976 MOVQ src_base+24(FP), DX
5977
5978search_loop_encodeBetterBlockAsm:
5979 MOVL CX, BX
5980 SUBL 12(SP), BX
5981 SHRL $0x07, BX
5982 CMPL BX, $0x63
5983 JBE check_maxskip_ok_encodeBetterBlockAsm
5984 LEAL 100(CX), BX
5985 JMP check_maxskip_cont_encodeBetterBlockAsm
5986
5987check_maxskip_ok_encodeBetterBlockAsm:
5988 LEAL 1(CX)(BX*1), BX
5989
5990check_maxskip_cont_encodeBetterBlockAsm:
5991 CMPL BX, 8(SP)
5992 JAE emit_remainder_encodeBetterBlockAsm
5993 MOVQ (DX)(CX*1), SI
5994 MOVL BX, 20(SP)
5995 MOVQ $0x00cf1bbcdcbfa563, R8
5996 MOVQ $0x9e3779b1, BX
5997 MOVQ SI, R9
5998 MOVQ SI, R10
5999 SHLQ $0x08, R9
6000 IMULQ R8, R9
6001 SHRQ $0x2f, R9
6002 SHLQ $0x20, R10
6003 IMULQ BX, R10
6004 SHRQ $0x32, R10
6005 MOVL 24(SP)(R9*4), BX
6006 MOVL 524312(SP)(R10*4), DI
6007 MOVL CX, 24(SP)(R9*4)
6008 MOVL CX, 524312(SP)(R10*4)
6009 MOVQ (DX)(BX*1), R9
6010 MOVQ (DX)(DI*1), R10
6011 CMPQ R9, SI
6012 JEQ candidate_match_encodeBetterBlockAsm
6013 CMPQ R10, SI
6014 JNE no_short_found_encodeBetterBlockAsm
6015 MOVL DI, BX
6016 JMP candidate_match_encodeBetterBlockAsm
6017
6018no_short_found_encodeBetterBlockAsm:
6019 CMPL R9, SI
6020 JEQ candidate_match_encodeBetterBlockAsm
6021 CMPL R10, SI
6022 JEQ candidateS_match_encodeBetterBlockAsm
6023 MOVL 20(SP), CX
6024 JMP search_loop_encodeBetterBlockAsm
6025
6026candidateS_match_encodeBetterBlockAsm:
6027 SHRQ $0x08, SI
6028 MOVQ SI, R9
6029 SHLQ $0x08, R9
6030 IMULQ R8, R9
6031 SHRQ $0x2f, R9
6032 MOVL 24(SP)(R9*4), BX
6033 INCL CX
6034 MOVL CX, 24(SP)(R9*4)
6035 CMPL (DX)(BX*1), SI
6036 JEQ candidate_match_encodeBetterBlockAsm
6037 DECL CX
6038 MOVL DI, BX
6039
6040candidate_match_encodeBetterBlockAsm:
6041 MOVL 12(SP), SI
6042 TESTL BX, BX
6043 JZ match_extend_back_end_encodeBetterBlockAsm
6044
6045match_extend_back_loop_encodeBetterBlockAsm:
6046 CMPL CX, SI
6047 JBE match_extend_back_end_encodeBetterBlockAsm
6048 MOVB -1(DX)(BX*1), DI
6049 MOVB -1(DX)(CX*1), R8
6050 CMPB DI, R8
6051 JNE match_extend_back_end_encodeBetterBlockAsm
6052 LEAL -1(CX), CX
6053 DECL BX
6054 JZ match_extend_back_end_encodeBetterBlockAsm
6055 JMP match_extend_back_loop_encodeBetterBlockAsm
6056
6057match_extend_back_end_encodeBetterBlockAsm:
6058 MOVL CX, SI
6059 SUBL 12(SP), SI
6060 LEAQ 5(AX)(SI*1), SI
6061 CMPQ SI, (SP)
6062 JB match_dst_size_check_encodeBetterBlockAsm
6063 MOVQ $0x00000000, ret+48(FP)
6064 RET
6065
6066match_dst_size_check_encodeBetterBlockAsm:
6067 MOVL CX, SI
6068 ADDL $0x04, CX
6069 ADDL $0x04, BX
6070 MOVQ src_len+32(FP), DI
6071 SUBL CX, DI
6072 LEAQ (DX)(CX*1), R8
6073 LEAQ (DX)(BX*1), R9
6074
6075 // matchLen
6076 XORL R11, R11
6077
6078matchlen_loopback_16_match_nolit_encodeBetterBlockAsm:
6079 CMPL DI, $0x10
6080 JB matchlen_match8_match_nolit_encodeBetterBlockAsm
6081 MOVQ (R8)(R11*1), R10
6082 MOVQ 8(R8)(R11*1), R12
6083 XORQ (R9)(R11*1), R10
6084 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm
6085 XORQ 8(R9)(R11*1), R12
6086 JNZ matchlen_bsf_16match_nolit_encodeBetterBlockAsm
6087 LEAL -16(DI), DI
6088 LEAL 16(R11), R11
6089 JMP matchlen_loopback_16_match_nolit_encodeBetterBlockAsm
6090
6091matchlen_bsf_16match_nolit_encodeBetterBlockAsm:
6092#ifdef GOAMD64_v3
6093 TZCNTQ R12, R12
6094
6095#else
6096 BSFQ R12, R12
6097
6098#endif
6099 SARQ $0x03, R12
6100 LEAL 8(R11)(R12*1), R11
6101 JMP match_nolit_end_encodeBetterBlockAsm
6102
6103matchlen_match8_match_nolit_encodeBetterBlockAsm:
6104 CMPL DI, $0x08
6105 JB matchlen_match4_match_nolit_encodeBetterBlockAsm
6106 MOVQ (R8)(R11*1), R10
6107 XORQ (R9)(R11*1), R10
6108 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm
6109 LEAL -8(DI), DI
6110 LEAL 8(R11), R11
6111 JMP matchlen_match4_match_nolit_encodeBetterBlockAsm
6112
6113matchlen_bsf_8_match_nolit_encodeBetterBlockAsm:
6114#ifdef GOAMD64_v3
6115 TZCNTQ R10, R10
6116
6117#else
6118 BSFQ R10, R10
6119
6120#endif
6121 SARQ $0x03, R10
6122 LEAL (R11)(R10*1), R11
6123 JMP match_nolit_end_encodeBetterBlockAsm
6124
6125matchlen_match4_match_nolit_encodeBetterBlockAsm:
6126 CMPL DI, $0x04
6127 JB matchlen_match2_match_nolit_encodeBetterBlockAsm
6128 MOVL (R8)(R11*1), R10
6129 CMPL (R9)(R11*1), R10
6130 JNE matchlen_match2_match_nolit_encodeBetterBlockAsm
6131 LEAL -4(DI), DI
6132 LEAL 4(R11), R11
6133
6134matchlen_match2_match_nolit_encodeBetterBlockAsm:
6135 CMPL DI, $0x01
6136 JE matchlen_match1_match_nolit_encodeBetterBlockAsm
6137 JB match_nolit_end_encodeBetterBlockAsm
6138 MOVW (R8)(R11*1), R10
6139 CMPW (R9)(R11*1), R10
6140 JNE matchlen_match1_match_nolit_encodeBetterBlockAsm
6141 LEAL 2(R11), R11
6142 SUBL $0x02, DI
6143 JZ match_nolit_end_encodeBetterBlockAsm
6144
6145matchlen_match1_match_nolit_encodeBetterBlockAsm:
6146 MOVB (R8)(R11*1), R10
6147 CMPB (R9)(R11*1), R10
6148 JNE match_nolit_end_encodeBetterBlockAsm
6149 LEAL 1(R11), R11
6150
6151match_nolit_end_encodeBetterBlockAsm:
6152 MOVL CX, DI
6153 SUBL BX, DI
6154
6155 // Check if repeat
6156 CMPL 16(SP), DI
6157 JEQ match_is_repeat_encodeBetterBlockAsm
6158 CMPL R11, $0x01
6159 JA match_length_ok_encodeBetterBlockAsm
6160 CMPL DI, $0x0000ffff
6161 JBE match_length_ok_encodeBetterBlockAsm
6162 MOVL 20(SP), CX
6163 INCL CX
6164 JMP search_loop_encodeBetterBlockAsm
6165
6166match_length_ok_encodeBetterBlockAsm:
6167 MOVL DI, 16(SP)
6168 MOVL 12(SP), BX
6169 CMPL BX, SI
6170 JEQ emit_literal_done_match_emit_encodeBetterBlockAsm
6171 MOVL SI, R8
6172 MOVL SI, 12(SP)
6173 LEAQ (DX)(BX*1), R9
6174 SUBL BX, R8
6175 LEAL -1(R8), BX
6176 CMPL BX, $0x3c
6177 JB one_byte_match_emit_encodeBetterBlockAsm
6178 CMPL BX, $0x00000100
6179 JB two_bytes_match_emit_encodeBetterBlockAsm
6180 CMPL BX, $0x00010000
6181 JB three_bytes_match_emit_encodeBetterBlockAsm
6182 CMPL BX, $0x01000000
6183 JB four_bytes_match_emit_encodeBetterBlockAsm
6184 MOVB $0xfc, (AX)
6185 MOVL BX, 1(AX)
6186 ADDQ $0x05, AX
6187 JMP memmove_long_match_emit_encodeBetterBlockAsm
6188
6189four_bytes_match_emit_encodeBetterBlockAsm:
6190 MOVL BX, R10
6191 SHRL $0x10, R10
6192 MOVB $0xf8, (AX)
6193 MOVW BX, 1(AX)
6194 MOVB R10, 3(AX)
6195 ADDQ $0x04, AX
6196 JMP memmove_long_match_emit_encodeBetterBlockAsm
6197
6198three_bytes_match_emit_encodeBetterBlockAsm:
6199 MOVB $0xf4, (AX)
6200 MOVW BX, 1(AX)
6201 ADDQ $0x03, AX
6202 JMP memmove_long_match_emit_encodeBetterBlockAsm
6203
6204two_bytes_match_emit_encodeBetterBlockAsm:
6205 MOVB $0xf0, (AX)
6206 MOVB BL, 1(AX)
6207 ADDQ $0x02, AX
6208 CMPL BX, $0x40
6209 JB memmove_match_emit_encodeBetterBlockAsm
6210 JMP memmove_long_match_emit_encodeBetterBlockAsm
6211
6212one_byte_match_emit_encodeBetterBlockAsm:
6213 SHLB $0x02, BL
6214 MOVB BL, (AX)
6215 ADDQ $0x01, AX
6216
6217memmove_match_emit_encodeBetterBlockAsm:
6218 LEAQ (AX)(R8*1), BX
6219
6220 // genMemMoveShort
6221 CMPQ R8, $0x04
6222 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_4
6223 CMPQ R8, $0x08
6224 JB emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_4through7
6225 CMPQ R8, $0x10
6226 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_8through16
6227 CMPQ R8, $0x20
6228 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_17through32
6229 JMP emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_33through64
6230
6231emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_4:
6232 MOVL (R9), R10
6233 MOVL R10, (AX)
6234 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm
6235
6236emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_4through7:
6237 MOVL (R9), R10
6238 MOVL -4(R9)(R8*1), R9
6239 MOVL R10, (AX)
6240 MOVL R9, -4(AX)(R8*1)
6241 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm
6242
6243emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_8through16:
6244 MOVQ (R9), R10
6245 MOVQ -8(R9)(R8*1), R9
6246 MOVQ R10, (AX)
6247 MOVQ R9, -8(AX)(R8*1)
6248 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm
6249
6250emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_17through32:
6251 MOVOU (R9), X0
6252 MOVOU -16(R9)(R8*1), X1
6253 MOVOU X0, (AX)
6254 MOVOU X1, -16(AX)(R8*1)
6255 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm
6256
6257emit_lit_memmove_match_emit_encodeBetterBlockAsm_memmove_move_33through64:
6258 MOVOU (R9), X0
6259 MOVOU 16(R9), X1
6260 MOVOU -32(R9)(R8*1), X2
6261 MOVOU -16(R9)(R8*1), X3
6262 MOVOU X0, (AX)
6263 MOVOU X1, 16(AX)
6264 MOVOU X2, -32(AX)(R8*1)
6265 MOVOU X3, -16(AX)(R8*1)
6266
6267memmove_end_copy_match_emit_encodeBetterBlockAsm:
6268 MOVQ BX, AX
6269 JMP emit_literal_done_match_emit_encodeBetterBlockAsm
6270
6271memmove_long_match_emit_encodeBetterBlockAsm:
6272 LEAQ (AX)(R8*1), BX
6273
6274 // genMemMoveLong
6275 MOVOU (R9), X0
6276 MOVOU 16(R9), X1
6277 MOVOU -32(R9)(R8*1), X2
6278 MOVOU -16(R9)(R8*1), X3
6279 MOVQ R8, R12
6280 SHRQ $0x05, R12
6281 MOVQ AX, R10
6282 ANDL $0x0000001f, R10
6283 MOVQ $0x00000040, R13
6284 SUBQ R10, R13
6285 DECQ R12
6286 JA emit_lit_memmove_long_match_emit_encodeBetterBlockAsmlarge_forward_sse_loop_32
6287 LEAQ -32(R9)(R13*1), R10
6288 LEAQ -32(AX)(R13*1), R14
6289
6290emit_lit_memmove_long_match_emit_encodeBetterBlockAsmlarge_big_loop_back:
6291 MOVOU (R10), X4
6292 MOVOU 16(R10), X5
6293 MOVOA X4, (R14)
6294 MOVOA X5, 16(R14)
6295 ADDQ $0x20, R14
6296 ADDQ $0x20, R10
6297 ADDQ $0x20, R13
6298 DECQ R12
6299 JNA emit_lit_memmove_long_match_emit_encodeBetterBlockAsmlarge_big_loop_back
6300
6301emit_lit_memmove_long_match_emit_encodeBetterBlockAsmlarge_forward_sse_loop_32:
6302 MOVOU -32(R9)(R13*1), X4
6303 MOVOU -16(R9)(R13*1), X5
6304 MOVOA X4, -32(AX)(R13*1)
6305 MOVOA X5, -16(AX)(R13*1)
6306 ADDQ $0x20, R13
6307 CMPQ R8, R13
6308 JAE emit_lit_memmove_long_match_emit_encodeBetterBlockAsmlarge_forward_sse_loop_32
6309 MOVOU X0, (AX)
6310 MOVOU X1, 16(AX)
6311 MOVOU X2, -32(AX)(R8*1)
6312 MOVOU X3, -16(AX)(R8*1)
6313 MOVQ BX, AX
6314
6315emit_literal_done_match_emit_encodeBetterBlockAsm:
6316 ADDL R11, CX
6317 ADDL $0x04, R11
6318 MOVL CX, 12(SP)
6319
6320 // emitCopy
6321 CMPL DI, $0x00010000
6322 JB two_byte_offset_match_nolit_encodeBetterBlockAsm
6323 CMPL R11, $0x40
6324 JBE four_bytes_remain_match_nolit_encodeBetterBlockAsm
6325 MOVB $0xff, (AX)
6326 MOVL DI, 1(AX)
6327 LEAL -64(R11), R11
6328 ADDQ $0x05, AX
6329 CMPL R11, $0x04
6330 JB four_bytes_remain_match_nolit_encodeBetterBlockAsm
6331
6332 // emitRepeat
6333emit_repeat_again_match_nolit_encodeBetterBlockAsm_emit_copy:
6334 MOVL R11, BX
6335 LEAL -4(R11), R11
6336 CMPL BX, $0x08
6337 JBE repeat_two_match_nolit_encodeBetterBlockAsm_emit_copy
6338 CMPL BX, $0x0c
6339 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy
6340 CMPL DI, $0x00000800
6341 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy
6342
6343cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy:
6344 CMPL R11, $0x00000104
6345 JB repeat_three_match_nolit_encodeBetterBlockAsm_emit_copy
6346 CMPL R11, $0x00010100
6347 JB repeat_four_match_nolit_encodeBetterBlockAsm_emit_copy
6348 CMPL R11, $0x0100ffff
6349 JB repeat_five_match_nolit_encodeBetterBlockAsm_emit_copy
6350 LEAL -16842747(R11), R11
6351 MOVL $0xfffb001d, (AX)
6352 MOVB $0xff, 4(AX)
6353 ADDQ $0x05, AX
6354 JMP emit_repeat_again_match_nolit_encodeBetterBlockAsm_emit_copy
6355
6356repeat_five_match_nolit_encodeBetterBlockAsm_emit_copy:
6357 LEAL -65536(R11), R11
6358 MOVL R11, DI
6359 MOVW $0x001d, (AX)
6360 MOVW R11, 2(AX)
6361 SARL $0x10, DI
6362 MOVB DI, 4(AX)
6363 ADDQ $0x05, AX
6364 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6365
6366repeat_four_match_nolit_encodeBetterBlockAsm_emit_copy:
6367 LEAL -256(R11), R11
6368 MOVW $0x0019, (AX)
6369 MOVW R11, 2(AX)
6370 ADDQ $0x04, AX
6371 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6372
6373repeat_three_match_nolit_encodeBetterBlockAsm_emit_copy:
6374 LEAL -4(R11), R11
6375 MOVW $0x0015, (AX)
6376 MOVB R11, 2(AX)
6377 ADDQ $0x03, AX
6378 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6379
6380repeat_two_match_nolit_encodeBetterBlockAsm_emit_copy:
6381 SHLL $0x02, R11
6382 ORL $0x01, R11
6383 MOVW R11, (AX)
6384 ADDQ $0x02, AX
6385 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6386
6387repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy:
6388 XORQ BX, BX
6389 LEAL 1(BX)(R11*4), R11
6390 MOVB DI, 1(AX)
6391 SARL $0x08, DI
6392 SHLL $0x05, DI
6393 ORL DI, R11
6394 MOVB R11, (AX)
6395 ADDQ $0x02, AX
6396 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6397
6398four_bytes_remain_match_nolit_encodeBetterBlockAsm:
6399 TESTL R11, R11
6400 JZ match_nolit_emitcopy_end_encodeBetterBlockAsm
6401 XORL BX, BX
6402 LEAL -1(BX)(R11*4), R11
6403 MOVB R11, (AX)
6404 MOVL DI, 1(AX)
6405 ADDQ $0x05, AX
6406 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6407
6408two_byte_offset_match_nolit_encodeBetterBlockAsm:
6409 CMPL R11, $0x40
6410 JBE two_byte_offset_short_match_nolit_encodeBetterBlockAsm
6411 CMPL DI, $0x00000800
6412 JAE long_offset_short_match_nolit_encodeBetterBlockAsm
6413 MOVL $0x00000001, BX
6414 LEAL 16(BX), BX
6415 MOVB DI, 1(AX)
6416 MOVL DI, R8
6417 SHRL $0x08, R8
6418 SHLL $0x05, R8
6419 ORL R8, BX
6420 MOVB BL, (AX)
6421 ADDQ $0x02, AX
6422 SUBL $0x08, R11
6423
6424 // emitRepeat
6425 LEAL -4(R11), R11
6426 JMP cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6427
6428emit_repeat_again_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b:
6429 MOVL R11, BX
6430 LEAL -4(R11), R11
6431 CMPL BX, $0x08
6432 JBE repeat_two_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6433 CMPL BX, $0x0c
6434 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6435 CMPL DI, $0x00000800
6436 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6437
6438cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b:
6439 CMPL R11, $0x00000104
6440 JB repeat_three_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6441 CMPL R11, $0x00010100
6442 JB repeat_four_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6443 CMPL R11, $0x0100ffff
6444 JB repeat_five_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6445 LEAL -16842747(R11), R11
6446 MOVL $0xfffb001d, (AX)
6447 MOVB $0xff, 4(AX)
6448 ADDQ $0x05, AX
6449 JMP emit_repeat_again_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b
6450
6451repeat_five_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b:
6452 LEAL -65536(R11), R11
6453 MOVL R11, DI
6454 MOVW $0x001d, (AX)
6455 MOVW R11, 2(AX)
6456 SARL $0x10, DI
6457 MOVB DI, 4(AX)
6458 ADDQ $0x05, AX
6459 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6460
6461repeat_four_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b:
6462 LEAL -256(R11), R11
6463 MOVW $0x0019, (AX)
6464 MOVW R11, 2(AX)
6465 ADDQ $0x04, AX
6466 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6467
6468repeat_three_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b:
6469 LEAL -4(R11), R11
6470 MOVW $0x0015, (AX)
6471 MOVB R11, 2(AX)
6472 ADDQ $0x03, AX
6473 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6474
6475repeat_two_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b:
6476 SHLL $0x02, R11
6477 ORL $0x01, R11
6478 MOVW R11, (AX)
6479 ADDQ $0x02, AX
6480 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6481
6482repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short_2b:
6483 XORQ BX, BX
6484 LEAL 1(BX)(R11*4), R11
6485 MOVB DI, 1(AX)
6486 SARL $0x08, DI
6487 SHLL $0x05, DI
6488 ORL DI, R11
6489 MOVB R11, (AX)
6490 ADDQ $0x02, AX
6491 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6492
6493long_offset_short_match_nolit_encodeBetterBlockAsm:
6494 MOVB $0xee, (AX)
6495 MOVW DI, 1(AX)
6496 LEAL -60(R11), R11
6497 ADDQ $0x03, AX
6498
6499 // emitRepeat
6500emit_repeat_again_match_nolit_encodeBetterBlockAsm_emit_copy_short:
6501 MOVL R11, BX
6502 LEAL -4(R11), R11
6503 CMPL BX, $0x08
6504 JBE repeat_two_match_nolit_encodeBetterBlockAsm_emit_copy_short
6505 CMPL BX, $0x0c
6506 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short
6507 CMPL DI, $0x00000800
6508 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short
6509
6510cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short:
6511 CMPL R11, $0x00000104
6512 JB repeat_three_match_nolit_encodeBetterBlockAsm_emit_copy_short
6513 CMPL R11, $0x00010100
6514 JB repeat_four_match_nolit_encodeBetterBlockAsm_emit_copy_short
6515 CMPL R11, $0x0100ffff
6516 JB repeat_five_match_nolit_encodeBetterBlockAsm_emit_copy_short
6517 LEAL -16842747(R11), R11
6518 MOVL $0xfffb001d, (AX)
6519 MOVB $0xff, 4(AX)
6520 ADDQ $0x05, AX
6521 JMP emit_repeat_again_match_nolit_encodeBetterBlockAsm_emit_copy_short
6522
6523repeat_five_match_nolit_encodeBetterBlockAsm_emit_copy_short:
6524 LEAL -65536(R11), R11
6525 MOVL R11, DI
6526 MOVW $0x001d, (AX)
6527 MOVW R11, 2(AX)
6528 SARL $0x10, DI
6529 MOVB DI, 4(AX)
6530 ADDQ $0x05, AX
6531 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6532
6533repeat_four_match_nolit_encodeBetterBlockAsm_emit_copy_short:
6534 LEAL -256(R11), R11
6535 MOVW $0x0019, (AX)
6536 MOVW R11, 2(AX)
6537 ADDQ $0x04, AX
6538 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6539
6540repeat_three_match_nolit_encodeBetterBlockAsm_emit_copy_short:
6541 LEAL -4(R11), R11
6542 MOVW $0x0015, (AX)
6543 MOVB R11, 2(AX)
6544 ADDQ $0x03, AX
6545 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6546
6547repeat_two_match_nolit_encodeBetterBlockAsm_emit_copy_short:
6548 SHLL $0x02, R11
6549 ORL $0x01, R11
6550 MOVW R11, (AX)
6551 ADDQ $0x02, AX
6552 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6553
6554repeat_two_offset_match_nolit_encodeBetterBlockAsm_emit_copy_short:
6555 XORQ BX, BX
6556 LEAL 1(BX)(R11*4), R11
6557 MOVB DI, 1(AX)
6558 SARL $0x08, DI
6559 SHLL $0x05, DI
6560 ORL DI, R11
6561 MOVB R11, (AX)
6562 ADDQ $0x02, AX
6563 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6564
6565two_byte_offset_short_match_nolit_encodeBetterBlockAsm:
6566 MOVL R11, BX
6567 SHLL $0x02, BX
6568 CMPL R11, $0x0c
6569 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm
6570 CMPL DI, $0x00000800
6571 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm
6572 LEAL -15(BX), BX
6573 MOVB DI, 1(AX)
6574 SHRL $0x08, DI
6575 SHLL $0x05, DI
6576 ORL DI, BX
6577 MOVB BL, (AX)
6578 ADDQ $0x02, AX
6579 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6580
6581emit_copy_three_match_nolit_encodeBetterBlockAsm:
6582 LEAL -2(BX), BX
6583 MOVB BL, (AX)
6584 MOVW DI, 1(AX)
6585 ADDQ $0x03, AX
6586 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6587
6588match_is_repeat_encodeBetterBlockAsm:
6589 MOVL 12(SP), BX
6590 CMPL BX, SI
6591 JEQ emit_literal_done_match_emit_repeat_encodeBetterBlockAsm
6592 MOVL SI, R8
6593 MOVL SI, 12(SP)
6594 LEAQ (DX)(BX*1), R9
6595 SUBL BX, R8
6596 LEAL -1(R8), BX
6597 CMPL BX, $0x3c
6598 JB one_byte_match_emit_repeat_encodeBetterBlockAsm
6599 CMPL BX, $0x00000100
6600 JB two_bytes_match_emit_repeat_encodeBetterBlockAsm
6601 CMPL BX, $0x00010000
6602 JB three_bytes_match_emit_repeat_encodeBetterBlockAsm
6603 CMPL BX, $0x01000000
6604 JB four_bytes_match_emit_repeat_encodeBetterBlockAsm
6605 MOVB $0xfc, (AX)
6606 MOVL BX, 1(AX)
6607 ADDQ $0x05, AX
6608 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm
6609
6610four_bytes_match_emit_repeat_encodeBetterBlockAsm:
6611 MOVL BX, R10
6612 SHRL $0x10, R10
6613 MOVB $0xf8, (AX)
6614 MOVW BX, 1(AX)
6615 MOVB R10, 3(AX)
6616 ADDQ $0x04, AX
6617 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm
6618
6619three_bytes_match_emit_repeat_encodeBetterBlockAsm:
6620 MOVB $0xf4, (AX)
6621 MOVW BX, 1(AX)
6622 ADDQ $0x03, AX
6623 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm
6624
6625two_bytes_match_emit_repeat_encodeBetterBlockAsm:
6626 MOVB $0xf0, (AX)
6627 MOVB BL, 1(AX)
6628 ADDQ $0x02, AX
6629 CMPL BX, $0x40
6630 JB memmove_match_emit_repeat_encodeBetterBlockAsm
6631 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm
6632
6633one_byte_match_emit_repeat_encodeBetterBlockAsm:
6634 SHLB $0x02, BL
6635 MOVB BL, (AX)
6636 ADDQ $0x01, AX
6637
6638memmove_match_emit_repeat_encodeBetterBlockAsm:
6639 LEAQ (AX)(R8*1), BX
6640
6641 // genMemMoveShort
6642 CMPQ R8, $0x04
6643 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_4
6644 CMPQ R8, $0x08
6645 JB emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_4through7
6646 CMPQ R8, $0x10
6647 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_8through16
6648 CMPQ R8, $0x20
6649 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_17through32
6650 JMP emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_33through64
6651
6652emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_4:
6653 MOVL (R9), R10
6654 MOVL R10, (AX)
6655 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm
6656
6657emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_4through7:
6658 MOVL (R9), R10
6659 MOVL -4(R9)(R8*1), R9
6660 MOVL R10, (AX)
6661 MOVL R9, -4(AX)(R8*1)
6662 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm
6663
6664emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_8through16:
6665 MOVQ (R9), R10
6666 MOVQ -8(R9)(R8*1), R9
6667 MOVQ R10, (AX)
6668 MOVQ R9, -8(AX)(R8*1)
6669 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm
6670
6671emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_17through32:
6672 MOVOU (R9), X0
6673 MOVOU -16(R9)(R8*1), X1
6674 MOVOU X0, (AX)
6675 MOVOU X1, -16(AX)(R8*1)
6676 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm
6677
6678emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm_memmove_move_33through64:
6679 MOVOU (R9), X0
6680 MOVOU 16(R9), X1
6681 MOVOU -32(R9)(R8*1), X2
6682 MOVOU -16(R9)(R8*1), X3
6683 MOVOU X0, (AX)
6684 MOVOU X1, 16(AX)
6685 MOVOU X2, -32(AX)(R8*1)
6686 MOVOU X3, -16(AX)(R8*1)
6687
6688memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm:
6689 MOVQ BX, AX
6690 JMP emit_literal_done_match_emit_repeat_encodeBetterBlockAsm
6691
6692memmove_long_match_emit_repeat_encodeBetterBlockAsm:
6693 LEAQ (AX)(R8*1), BX
6694
6695 // genMemMoveLong
6696 MOVOU (R9), X0
6697 MOVOU 16(R9), X1
6698 MOVOU -32(R9)(R8*1), X2
6699 MOVOU -16(R9)(R8*1), X3
6700 MOVQ R8, R12
6701 SHRQ $0x05, R12
6702 MOVQ AX, R10
6703 ANDL $0x0000001f, R10
6704 MOVQ $0x00000040, R13
6705 SUBQ R10, R13
6706 DECQ R12
6707 JA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsmlarge_forward_sse_loop_32
6708 LEAQ -32(R9)(R13*1), R10
6709 LEAQ -32(AX)(R13*1), R14
6710
6711emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsmlarge_big_loop_back:
6712 MOVOU (R10), X4
6713 MOVOU 16(R10), X5
6714 MOVOA X4, (R14)
6715 MOVOA X5, 16(R14)
6716 ADDQ $0x20, R14
6717 ADDQ $0x20, R10
6718 ADDQ $0x20, R13
6719 DECQ R12
6720 JNA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsmlarge_big_loop_back
6721
6722emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsmlarge_forward_sse_loop_32:
6723 MOVOU -32(R9)(R13*1), X4
6724 MOVOU -16(R9)(R13*1), X5
6725 MOVOA X4, -32(AX)(R13*1)
6726 MOVOA X5, -16(AX)(R13*1)
6727 ADDQ $0x20, R13
6728 CMPQ R8, R13
6729 JAE emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsmlarge_forward_sse_loop_32
6730 MOVOU X0, (AX)
6731 MOVOU X1, 16(AX)
6732 MOVOU X2, -32(AX)(R8*1)
6733 MOVOU X3, -16(AX)(R8*1)
6734 MOVQ BX, AX
6735
6736emit_literal_done_match_emit_repeat_encodeBetterBlockAsm:
6737 ADDL R11, CX
6738 ADDL $0x04, R11
6739 MOVL CX, 12(SP)
6740
6741 // emitRepeat
6742emit_repeat_again_match_nolit_repeat_encodeBetterBlockAsm:
6743 MOVL R11, BX
6744 LEAL -4(R11), R11
6745 CMPL BX, $0x08
6746 JBE repeat_two_match_nolit_repeat_encodeBetterBlockAsm
6747 CMPL BX, $0x0c
6748 JAE cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm
6749 CMPL DI, $0x00000800
6750 JB repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm
6751
6752cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm:
6753 CMPL R11, $0x00000104
6754 JB repeat_three_match_nolit_repeat_encodeBetterBlockAsm
6755 CMPL R11, $0x00010100
6756 JB repeat_four_match_nolit_repeat_encodeBetterBlockAsm
6757 CMPL R11, $0x0100ffff
6758 JB repeat_five_match_nolit_repeat_encodeBetterBlockAsm
6759 LEAL -16842747(R11), R11
6760 MOVL $0xfffb001d, (AX)
6761 MOVB $0xff, 4(AX)
6762 ADDQ $0x05, AX
6763 JMP emit_repeat_again_match_nolit_repeat_encodeBetterBlockAsm
6764
6765repeat_five_match_nolit_repeat_encodeBetterBlockAsm:
6766 LEAL -65536(R11), R11
6767 MOVL R11, DI
6768 MOVW $0x001d, (AX)
6769 MOVW R11, 2(AX)
6770 SARL $0x10, DI
6771 MOVB DI, 4(AX)
6772 ADDQ $0x05, AX
6773 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6774
6775repeat_four_match_nolit_repeat_encodeBetterBlockAsm:
6776 LEAL -256(R11), R11
6777 MOVW $0x0019, (AX)
6778 MOVW R11, 2(AX)
6779 ADDQ $0x04, AX
6780 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6781
6782repeat_three_match_nolit_repeat_encodeBetterBlockAsm:
6783 LEAL -4(R11), R11
6784 MOVW $0x0015, (AX)
6785 MOVB R11, 2(AX)
6786 ADDQ $0x03, AX
6787 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6788
6789repeat_two_match_nolit_repeat_encodeBetterBlockAsm:
6790 SHLL $0x02, R11
6791 ORL $0x01, R11
6792 MOVW R11, (AX)
6793 ADDQ $0x02, AX
6794 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm
6795
6796repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm:
6797 XORQ BX, BX
6798 LEAL 1(BX)(R11*4), R11
6799 MOVB DI, 1(AX)
6800 SARL $0x08, DI
6801 SHLL $0x05, DI
6802 ORL DI, R11
6803 MOVB R11, (AX)
6804 ADDQ $0x02, AX
6805
6806match_nolit_emitcopy_end_encodeBetterBlockAsm:
6807 CMPL CX, 8(SP)
6808 JAE emit_remainder_encodeBetterBlockAsm
6809 CMPQ AX, (SP)
6810 JB match_nolit_dst_ok_encodeBetterBlockAsm
6811 MOVQ $0x00000000, ret+48(FP)
6812 RET
6813
6814match_nolit_dst_ok_encodeBetterBlockAsm:
6815 MOVQ $0x00cf1bbcdcbfa563, BX
6816 MOVQ $0x9e3779b1, DI
6817 LEAQ 1(SI), SI
6818 LEAQ -2(CX), R8
6819 MOVQ (DX)(SI*1), R9
6820 MOVQ 1(DX)(SI*1), R10
6821 MOVQ (DX)(R8*1), R11
6822 MOVQ 1(DX)(R8*1), R12
6823 SHLQ $0x08, R9
6824 IMULQ BX, R9
6825 SHRQ $0x2f, R9
6826 SHLQ $0x20, R10
6827 IMULQ DI, R10
6828 SHRQ $0x32, R10
6829 SHLQ $0x08, R11
6830 IMULQ BX, R11
6831 SHRQ $0x2f, R11
6832 SHLQ $0x20, R12
6833 IMULQ DI, R12
6834 SHRQ $0x32, R12
6835 LEAQ 1(SI), DI
6836 LEAQ 1(R8), R13
6837 MOVL SI, 24(SP)(R9*4)
6838 MOVL R8, 24(SP)(R11*4)
6839 MOVL DI, 524312(SP)(R10*4)
6840 MOVL R13, 524312(SP)(R12*4)
6841 LEAQ 1(R8)(SI*1), DI
6842 SHRQ $0x01, DI
6843 ADDQ $0x01, SI
6844 SUBQ $0x01, R8
6845
6846index_loop_encodeBetterBlockAsm:
6847 CMPQ DI, R8
6848 JAE search_loop_encodeBetterBlockAsm
6849 MOVQ (DX)(SI*1), R9
6850 MOVQ (DX)(DI*1), R10
6851 SHLQ $0x08, R9
6852 IMULQ BX, R9
6853 SHRQ $0x2f, R9
6854 SHLQ $0x08, R10
6855 IMULQ BX, R10
6856 SHRQ $0x2f, R10
6857 MOVL SI, 24(SP)(R9*4)
6858 MOVL DI, 24(SP)(R10*4)
6859 ADDQ $0x02, SI
6860 ADDQ $0x02, DI
6861 JMP index_loop_encodeBetterBlockAsm
6862
6863emit_remainder_encodeBetterBlockAsm:
6864 MOVQ src_len+32(FP), CX
6865 SUBL 12(SP), CX
6866 LEAQ 5(AX)(CX*1), CX
6867 CMPQ CX, (SP)
6868 JB emit_remainder_ok_encodeBetterBlockAsm
6869 MOVQ $0x00000000, ret+48(FP)
6870 RET
6871
6872emit_remainder_ok_encodeBetterBlockAsm:
6873 MOVQ src_len+32(FP), CX
6874 MOVL 12(SP), BX
6875 CMPL BX, CX
6876 JEQ emit_literal_done_emit_remainder_encodeBetterBlockAsm
6877 MOVL CX, SI
6878 MOVL CX, 12(SP)
6879 LEAQ (DX)(BX*1), CX
6880 SUBL BX, SI
6881 LEAL -1(SI), DX
6882 CMPL DX, $0x3c
6883 JB one_byte_emit_remainder_encodeBetterBlockAsm
6884 CMPL DX, $0x00000100
6885 JB two_bytes_emit_remainder_encodeBetterBlockAsm
6886 CMPL DX, $0x00010000
6887 JB three_bytes_emit_remainder_encodeBetterBlockAsm
6888 CMPL DX, $0x01000000
6889 JB four_bytes_emit_remainder_encodeBetterBlockAsm
6890 MOVB $0xfc, (AX)
6891 MOVL DX, 1(AX)
6892 ADDQ $0x05, AX
6893 JMP memmove_long_emit_remainder_encodeBetterBlockAsm
6894
6895four_bytes_emit_remainder_encodeBetterBlockAsm:
6896 MOVL DX, BX
6897 SHRL $0x10, BX
6898 MOVB $0xf8, (AX)
6899 MOVW DX, 1(AX)
6900 MOVB BL, 3(AX)
6901 ADDQ $0x04, AX
6902 JMP memmove_long_emit_remainder_encodeBetterBlockAsm
6903
6904three_bytes_emit_remainder_encodeBetterBlockAsm:
6905 MOVB $0xf4, (AX)
6906 MOVW DX, 1(AX)
6907 ADDQ $0x03, AX
6908 JMP memmove_long_emit_remainder_encodeBetterBlockAsm
6909
6910two_bytes_emit_remainder_encodeBetterBlockAsm:
6911 MOVB $0xf0, (AX)
6912 MOVB DL, 1(AX)
6913 ADDQ $0x02, AX
6914 CMPL DX, $0x40
6915 JB memmove_emit_remainder_encodeBetterBlockAsm
6916 JMP memmove_long_emit_remainder_encodeBetterBlockAsm
6917
6918one_byte_emit_remainder_encodeBetterBlockAsm:
6919 SHLB $0x02, DL
6920 MOVB DL, (AX)
6921 ADDQ $0x01, AX
6922
6923memmove_emit_remainder_encodeBetterBlockAsm:
6924 LEAQ (AX)(SI*1), DX
6925 MOVL SI, BX
6926
6927 // genMemMoveShort
6928 CMPQ BX, $0x03
6929 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_1or2
6930 JE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_3
6931 CMPQ BX, $0x08
6932 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_4through7
6933 CMPQ BX, $0x10
6934 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_8through16
6935 CMPQ BX, $0x20
6936 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_17through32
6937 JMP emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_33through64
6938
6939emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_1or2:
6940 MOVB (CX), SI
6941 MOVB -1(CX)(BX*1), CL
6942 MOVB SI, (AX)
6943 MOVB CL, -1(AX)(BX*1)
6944 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm
6945
6946emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_3:
6947 MOVW (CX), SI
6948 MOVB 2(CX), CL
6949 MOVW SI, (AX)
6950 MOVB CL, 2(AX)
6951 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm
6952
6953emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_4through7:
6954 MOVL (CX), SI
6955 MOVL -4(CX)(BX*1), CX
6956 MOVL SI, (AX)
6957 MOVL CX, -4(AX)(BX*1)
6958 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm
6959
6960emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_8through16:
6961 MOVQ (CX), SI
6962 MOVQ -8(CX)(BX*1), CX
6963 MOVQ SI, (AX)
6964 MOVQ CX, -8(AX)(BX*1)
6965 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm
6966
6967emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_17through32:
6968 MOVOU (CX), X0
6969 MOVOU -16(CX)(BX*1), X1
6970 MOVOU X0, (AX)
6971 MOVOU X1, -16(AX)(BX*1)
6972 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm
6973
6974emit_lit_memmove_emit_remainder_encodeBetterBlockAsm_memmove_move_33through64:
6975 MOVOU (CX), X0
6976 MOVOU 16(CX), X1
6977 MOVOU -32(CX)(BX*1), X2
6978 MOVOU -16(CX)(BX*1), X3
6979 MOVOU X0, (AX)
6980 MOVOU X1, 16(AX)
6981 MOVOU X2, -32(AX)(BX*1)
6982 MOVOU X3, -16(AX)(BX*1)
6983
6984memmove_end_copy_emit_remainder_encodeBetterBlockAsm:
6985 MOVQ DX, AX
6986 JMP emit_literal_done_emit_remainder_encodeBetterBlockAsm
6987
6988memmove_long_emit_remainder_encodeBetterBlockAsm:
6989 LEAQ (AX)(SI*1), DX
6990 MOVL SI, BX
6991
6992 // genMemMoveLong
6993 MOVOU (CX), X0
6994 MOVOU 16(CX), X1
6995 MOVOU -32(CX)(BX*1), X2
6996 MOVOU -16(CX)(BX*1), X3
6997 MOVQ BX, DI
6998 SHRQ $0x05, DI
6999 MOVQ AX, SI
7000 ANDL $0x0000001f, SI
7001 MOVQ $0x00000040, R8
7002 SUBQ SI, R8
7003 DECQ DI
7004 JA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsmlarge_forward_sse_loop_32
7005 LEAQ -32(CX)(R8*1), SI
7006 LEAQ -32(AX)(R8*1), R9
7007
7008emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsmlarge_big_loop_back:
7009 MOVOU (SI), X4
7010 MOVOU 16(SI), X5
7011 MOVOA X4, (R9)
7012 MOVOA X5, 16(R9)
7013 ADDQ $0x20, R9
7014 ADDQ $0x20, SI
7015 ADDQ $0x20, R8
7016 DECQ DI
7017 JNA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsmlarge_big_loop_back
7018
7019emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsmlarge_forward_sse_loop_32:
7020 MOVOU -32(CX)(R8*1), X4
7021 MOVOU -16(CX)(R8*1), X5
7022 MOVOA X4, -32(AX)(R8*1)
7023 MOVOA X5, -16(AX)(R8*1)
7024 ADDQ $0x20, R8
7025 CMPQ BX, R8
7026 JAE emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsmlarge_forward_sse_loop_32
7027 MOVOU X0, (AX)
7028 MOVOU X1, 16(AX)
7029 MOVOU X2, -32(AX)(BX*1)
7030 MOVOU X3, -16(AX)(BX*1)
7031 MOVQ DX, AX
7032
7033emit_literal_done_emit_remainder_encodeBetterBlockAsm:
7034 MOVQ dst_base+0(FP), CX
7035 SUBQ CX, AX
7036 MOVQ AX, ret+48(FP)
7037 RET
7038
7039// func encodeBetterBlockAsm4MB(dst []byte, src []byte) int
7040// Requires: BMI, SSE2
7041TEXT ·encodeBetterBlockAsm4MB(SB), $589848-56
7042 MOVQ dst_base+0(FP), AX
7043 MOVQ $0x00001200, CX
7044 LEAQ 24(SP), DX
7045 PXOR X0, X0
7046
7047zero_loop_encodeBetterBlockAsm4MB:
7048 MOVOU X0, (DX)
7049 MOVOU X0, 16(DX)
7050 MOVOU X0, 32(DX)
7051 MOVOU X0, 48(DX)
7052 MOVOU X0, 64(DX)
7053 MOVOU X0, 80(DX)
7054 MOVOU X0, 96(DX)
7055 MOVOU X0, 112(DX)
7056 ADDQ $0x80, DX
7057 DECQ CX
7058 JNZ zero_loop_encodeBetterBlockAsm4MB
7059 MOVL $0x00000000, 12(SP)
7060 MOVQ src_len+32(FP), CX
7061 LEAQ -6(CX), DX
7062 LEAQ -8(CX), BX
7063 MOVL BX, 8(SP)
7064 SHRQ $0x05, CX
7065 SUBL CX, DX
7066 LEAQ (AX)(DX*1), DX
7067 MOVQ DX, (SP)
7068 MOVL $0x00000001, CX
7069 MOVL $0x00000000, 16(SP)
7070 MOVQ src_base+24(FP), DX
7071
7072search_loop_encodeBetterBlockAsm4MB:
7073 MOVL CX, BX
7074 SUBL 12(SP), BX
7075 SHRL $0x07, BX
7076 CMPL BX, $0x63
7077 JBE check_maxskip_ok_encodeBetterBlockAsm4MB
7078 LEAL 100(CX), BX
7079 JMP check_maxskip_cont_encodeBetterBlockAsm4MB
7080
7081check_maxskip_ok_encodeBetterBlockAsm4MB:
7082 LEAL 1(CX)(BX*1), BX
7083
7084check_maxskip_cont_encodeBetterBlockAsm4MB:
7085 CMPL BX, 8(SP)
7086 JAE emit_remainder_encodeBetterBlockAsm4MB
7087 MOVQ (DX)(CX*1), SI
7088 MOVL BX, 20(SP)
7089 MOVQ $0x00cf1bbcdcbfa563, R8
7090 MOVQ $0x9e3779b1, BX
7091 MOVQ SI, R9
7092 MOVQ SI, R10
7093 SHLQ $0x08, R9
7094 IMULQ R8, R9
7095 SHRQ $0x2f, R9
7096 SHLQ $0x20, R10
7097 IMULQ BX, R10
7098 SHRQ $0x32, R10
7099 MOVL 24(SP)(R9*4), BX
7100 MOVL 524312(SP)(R10*4), DI
7101 MOVL CX, 24(SP)(R9*4)
7102 MOVL CX, 524312(SP)(R10*4)
7103 MOVQ (DX)(BX*1), R9
7104 MOVQ (DX)(DI*1), R10
7105 CMPQ R9, SI
7106 JEQ candidate_match_encodeBetterBlockAsm4MB
7107 CMPQ R10, SI
7108 JNE no_short_found_encodeBetterBlockAsm4MB
7109 MOVL DI, BX
7110 JMP candidate_match_encodeBetterBlockAsm4MB
7111
7112no_short_found_encodeBetterBlockAsm4MB:
7113 CMPL R9, SI
7114 JEQ candidate_match_encodeBetterBlockAsm4MB
7115 CMPL R10, SI
7116 JEQ candidateS_match_encodeBetterBlockAsm4MB
7117 MOVL 20(SP), CX
7118 JMP search_loop_encodeBetterBlockAsm4MB
7119
7120candidateS_match_encodeBetterBlockAsm4MB:
7121 SHRQ $0x08, SI
7122 MOVQ SI, R9
7123 SHLQ $0x08, R9
7124 IMULQ R8, R9
7125 SHRQ $0x2f, R9
7126 MOVL 24(SP)(R9*4), BX
7127 INCL CX
7128 MOVL CX, 24(SP)(R9*4)
7129 CMPL (DX)(BX*1), SI
7130 JEQ candidate_match_encodeBetterBlockAsm4MB
7131 DECL CX
7132 MOVL DI, BX
7133
7134candidate_match_encodeBetterBlockAsm4MB:
7135 MOVL 12(SP), SI
7136 TESTL BX, BX
7137 JZ match_extend_back_end_encodeBetterBlockAsm4MB
7138
7139match_extend_back_loop_encodeBetterBlockAsm4MB:
7140 CMPL CX, SI
7141 JBE match_extend_back_end_encodeBetterBlockAsm4MB
7142 MOVB -1(DX)(BX*1), DI
7143 MOVB -1(DX)(CX*1), R8
7144 CMPB DI, R8
7145 JNE match_extend_back_end_encodeBetterBlockAsm4MB
7146 LEAL -1(CX), CX
7147 DECL BX
7148 JZ match_extend_back_end_encodeBetterBlockAsm4MB
7149 JMP match_extend_back_loop_encodeBetterBlockAsm4MB
7150
7151match_extend_back_end_encodeBetterBlockAsm4MB:
7152 MOVL CX, SI
7153 SUBL 12(SP), SI
7154 LEAQ 4(AX)(SI*1), SI
7155 CMPQ SI, (SP)
7156 JB match_dst_size_check_encodeBetterBlockAsm4MB
7157 MOVQ $0x00000000, ret+48(FP)
7158 RET
7159
7160match_dst_size_check_encodeBetterBlockAsm4MB:
7161 MOVL CX, SI
7162 ADDL $0x04, CX
7163 ADDL $0x04, BX
7164 MOVQ src_len+32(FP), DI
7165 SUBL CX, DI
7166 LEAQ (DX)(CX*1), R8
7167 LEAQ (DX)(BX*1), R9
7168
7169 // matchLen
7170 XORL R11, R11
7171
7172matchlen_loopback_16_match_nolit_encodeBetterBlockAsm4MB:
7173 CMPL DI, $0x10
7174 JB matchlen_match8_match_nolit_encodeBetterBlockAsm4MB
7175 MOVQ (R8)(R11*1), R10
7176 MOVQ 8(R8)(R11*1), R12
7177 XORQ (R9)(R11*1), R10
7178 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm4MB
7179 XORQ 8(R9)(R11*1), R12
7180 JNZ matchlen_bsf_16match_nolit_encodeBetterBlockAsm4MB
7181 LEAL -16(DI), DI
7182 LEAL 16(R11), R11
7183 JMP matchlen_loopback_16_match_nolit_encodeBetterBlockAsm4MB
7184
7185matchlen_bsf_16match_nolit_encodeBetterBlockAsm4MB:
7186#ifdef GOAMD64_v3
7187 TZCNTQ R12, R12
7188
7189#else
7190 BSFQ R12, R12
7191
7192#endif
7193 SARQ $0x03, R12
7194 LEAL 8(R11)(R12*1), R11
7195 JMP match_nolit_end_encodeBetterBlockAsm4MB
7196
7197matchlen_match8_match_nolit_encodeBetterBlockAsm4MB:
7198 CMPL DI, $0x08
7199 JB matchlen_match4_match_nolit_encodeBetterBlockAsm4MB
7200 MOVQ (R8)(R11*1), R10
7201 XORQ (R9)(R11*1), R10
7202 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm4MB
7203 LEAL -8(DI), DI
7204 LEAL 8(R11), R11
7205 JMP matchlen_match4_match_nolit_encodeBetterBlockAsm4MB
7206
7207matchlen_bsf_8_match_nolit_encodeBetterBlockAsm4MB:
7208#ifdef GOAMD64_v3
7209 TZCNTQ R10, R10
7210
7211#else
7212 BSFQ R10, R10
7213
7214#endif
7215 SARQ $0x03, R10
7216 LEAL (R11)(R10*1), R11
7217 JMP match_nolit_end_encodeBetterBlockAsm4MB
7218
7219matchlen_match4_match_nolit_encodeBetterBlockAsm4MB:
7220 CMPL DI, $0x04
7221 JB matchlen_match2_match_nolit_encodeBetterBlockAsm4MB
7222 MOVL (R8)(R11*1), R10
7223 CMPL (R9)(R11*1), R10
7224 JNE matchlen_match2_match_nolit_encodeBetterBlockAsm4MB
7225 LEAL -4(DI), DI
7226 LEAL 4(R11), R11
7227
7228matchlen_match2_match_nolit_encodeBetterBlockAsm4MB:
7229 CMPL DI, $0x01
7230 JE matchlen_match1_match_nolit_encodeBetterBlockAsm4MB
7231 JB match_nolit_end_encodeBetterBlockAsm4MB
7232 MOVW (R8)(R11*1), R10
7233 CMPW (R9)(R11*1), R10
7234 JNE matchlen_match1_match_nolit_encodeBetterBlockAsm4MB
7235 LEAL 2(R11), R11
7236 SUBL $0x02, DI
7237 JZ match_nolit_end_encodeBetterBlockAsm4MB
7238
7239matchlen_match1_match_nolit_encodeBetterBlockAsm4MB:
7240 MOVB (R8)(R11*1), R10
7241 CMPB (R9)(R11*1), R10
7242 JNE match_nolit_end_encodeBetterBlockAsm4MB
7243 LEAL 1(R11), R11
7244
7245match_nolit_end_encodeBetterBlockAsm4MB:
7246 MOVL CX, DI
7247 SUBL BX, DI
7248
7249 // Check if repeat
7250 CMPL 16(SP), DI
7251 JEQ match_is_repeat_encodeBetterBlockAsm4MB
7252 CMPL R11, $0x01
7253 JA match_length_ok_encodeBetterBlockAsm4MB
7254 CMPL DI, $0x0000ffff
7255 JBE match_length_ok_encodeBetterBlockAsm4MB
7256 MOVL 20(SP), CX
7257 INCL CX
7258 JMP search_loop_encodeBetterBlockAsm4MB
7259
7260match_length_ok_encodeBetterBlockAsm4MB:
7261 MOVL DI, 16(SP)
7262 MOVL 12(SP), BX
7263 CMPL BX, SI
7264 JEQ emit_literal_done_match_emit_encodeBetterBlockAsm4MB
7265 MOVL SI, R8
7266 MOVL SI, 12(SP)
7267 LEAQ (DX)(BX*1), R9
7268 SUBL BX, R8
7269 LEAL -1(R8), BX
7270 CMPL BX, $0x3c
7271 JB one_byte_match_emit_encodeBetterBlockAsm4MB
7272 CMPL BX, $0x00000100
7273 JB two_bytes_match_emit_encodeBetterBlockAsm4MB
7274 CMPL BX, $0x00010000
7275 JB three_bytes_match_emit_encodeBetterBlockAsm4MB
7276 MOVL BX, R10
7277 SHRL $0x10, R10
7278 MOVB $0xf8, (AX)
7279 MOVW BX, 1(AX)
7280 MOVB R10, 3(AX)
7281 ADDQ $0x04, AX
7282 JMP memmove_long_match_emit_encodeBetterBlockAsm4MB
7283
7284three_bytes_match_emit_encodeBetterBlockAsm4MB:
7285 MOVB $0xf4, (AX)
7286 MOVW BX, 1(AX)
7287 ADDQ $0x03, AX
7288 JMP memmove_long_match_emit_encodeBetterBlockAsm4MB
7289
7290two_bytes_match_emit_encodeBetterBlockAsm4MB:
7291 MOVB $0xf0, (AX)
7292 MOVB BL, 1(AX)
7293 ADDQ $0x02, AX
7294 CMPL BX, $0x40
7295 JB memmove_match_emit_encodeBetterBlockAsm4MB
7296 JMP memmove_long_match_emit_encodeBetterBlockAsm4MB
7297
7298one_byte_match_emit_encodeBetterBlockAsm4MB:
7299 SHLB $0x02, BL
7300 MOVB BL, (AX)
7301 ADDQ $0x01, AX
7302
7303memmove_match_emit_encodeBetterBlockAsm4MB:
7304 LEAQ (AX)(R8*1), BX
7305
7306 // genMemMoveShort
7307 CMPQ R8, $0x04
7308 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_4
7309 CMPQ R8, $0x08
7310 JB emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_4through7
7311 CMPQ R8, $0x10
7312 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_8through16
7313 CMPQ R8, $0x20
7314 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_17through32
7315 JMP emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_33through64
7316
7317emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_4:
7318 MOVL (R9), R10
7319 MOVL R10, (AX)
7320 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm4MB
7321
7322emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_4through7:
7323 MOVL (R9), R10
7324 MOVL -4(R9)(R8*1), R9
7325 MOVL R10, (AX)
7326 MOVL R9, -4(AX)(R8*1)
7327 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm4MB
7328
7329emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_8through16:
7330 MOVQ (R9), R10
7331 MOVQ -8(R9)(R8*1), R9
7332 MOVQ R10, (AX)
7333 MOVQ R9, -8(AX)(R8*1)
7334 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm4MB
7335
7336emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_17through32:
7337 MOVOU (R9), X0
7338 MOVOU -16(R9)(R8*1), X1
7339 MOVOU X0, (AX)
7340 MOVOU X1, -16(AX)(R8*1)
7341 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm4MB
7342
7343emit_lit_memmove_match_emit_encodeBetterBlockAsm4MB_memmove_move_33through64:
7344 MOVOU (R9), X0
7345 MOVOU 16(R9), X1
7346 MOVOU -32(R9)(R8*1), X2
7347 MOVOU -16(R9)(R8*1), X3
7348 MOVOU X0, (AX)
7349 MOVOU X1, 16(AX)
7350 MOVOU X2, -32(AX)(R8*1)
7351 MOVOU X3, -16(AX)(R8*1)
7352
7353memmove_end_copy_match_emit_encodeBetterBlockAsm4MB:
7354 MOVQ BX, AX
7355 JMP emit_literal_done_match_emit_encodeBetterBlockAsm4MB
7356
7357memmove_long_match_emit_encodeBetterBlockAsm4MB:
7358 LEAQ (AX)(R8*1), BX
7359
7360 // genMemMoveLong
7361 MOVOU (R9), X0
7362 MOVOU 16(R9), X1
7363 MOVOU -32(R9)(R8*1), X2
7364 MOVOU -16(R9)(R8*1), X3
7365 MOVQ R8, R12
7366 SHRQ $0x05, R12
7367 MOVQ AX, R10
7368 ANDL $0x0000001f, R10
7369 MOVQ $0x00000040, R13
7370 SUBQ R10, R13
7371 DECQ R12
7372 JA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32
7373 LEAQ -32(R9)(R13*1), R10
7374 LEAQ -32(AX)(R13*1), R14
7375
7376emit_lit_memmove_long_match_emit_encodeBetterBlockAsm4MBlarge_big_loop_back:
7377 MOVOU (R10), X4
7378 MOVOU 16(R10), X5
7379 MOVOA X4, (R14)
7380 MOVOA X5, 16(R14)
7381 ADDQ $0x20, R14
7382 ADDQ $0x20, R10
7383 ADDQ $0x20, R13
7384 DECQ R12
7385 JNA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm4MBlarge_big_loop_back
7386
7387emit_lit_memmove_long_match_emit_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32:
7388 MOVOU -32(R9)(R13*1), X4
7389 MOVOU -16(R9)(R13*1), X5
7390 MOVOA X4, -32(AX)(R13*1)
7391 MOVOA X5, -16(AX)(R13*1)
7392 ADDQ $0x20, R13
7393 CMPQ R8, R13
7394 JAE emit_lit_memmove_long_match_emit_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32
7395 MOVOU X0, (AX)
7396 MOVOU X1, 16(AX)
7397 MOVOU X2, -32(AX)(R8*1)
7398 MOVOU X3, -16(AX)(R8*1)
7399 MOVQ BX, AX
7400
7401emit_literal_done_match_emit_encodeBetterBlockAsm4MB:
7402 ADDL R11, CX
7403 ADDL $0x04, R11
7404 MOVL CX, 12(SP)
7405
7406 // emitCopy
7407 CMPL DI, $0x00010000
7408 JB two_byte_offset_match_nolit_encodeBetterBlockAsm4MB
7409 CMPL R11, $0x40
7410 JBE four_bytes_remain_match_nolit_encodeBetterBlockAsm4MB
7411 MOVB $0xff, (AX)
7412 MOVL DI, 1(AX)
7413 LEAL -64(R11), R11
7414 ADDQ $0x05, AX
7415 CMPL R11, $0x04
7416 JB four_bytes_remain_match_nolit_encodeBetterBlockAsm4MB
7417
7418 // emitRepeat
7419 MOVL R11, BX
7420 LEAL -4(R11), R11
7421 CMPL BX, $0x08
7422 JBE repeat_two_match_nolit_encodeBetterBlockAsm4MB_emit_copy
7423 CMPL BX, $0x0c
7424 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy
7425 CMPL DI, $0x00000800
7426 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy
7427
7428cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy:
7429 CMPL R11, $0x00000104
7430 JB repeat_three_match_nolit_encodeBetterBlockAsm4MB_emit_copy
7431 CMPL R11, $0x00010100
7432 JB repeat_four_match_nolit_encodeBetterBlockAsm4MB_emit_copy
7433 LEAL -65536(R11), R11
7434 MOVL R11, DI
7435 MOVW $0x001d, (AX)
7436 MOVW R11, 2(AX)
7437 SARL $0x10, DI
7438 MOVB DI, 4(AX)
7439 ADDQ $0x05, AX
7440 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7441
7442repeat_four_match_nolit_encodeBetterBlockAsm4MB_emit_copy:
7443 LEAL -256(R11), R11
7444 MOVW $0x0019, (AX)
7445 MOVW R11, 2(AX)
7446 ADDQ $0x04, AX
7447 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7448
7449repeat_three_match_nolit_encodeBetterBlockAsm4MB_emit_copy:
7450 LEAL -4(R11), R11
7451 MOVW $0x0015, (AX)
7452 MOVB R11, 2(AX)
7453 ADDQ $0x03, AX
7454 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7455
7456repeat_two_match_nolit_encodeBetterBlockAsm4MB_emit_copy:
7457 SHLL $0x02, R11
7458 ORL $0x01, R11
7459 MOVW R11, (AX)
7460 ADDQ $0x02, AX
7461 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7462
7463repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy:
7464 XORQ BX, BX
7465 LEAL 1(BX)(R11*4), R11
7466 MOVB DI, 1(AX)
7467 SARL $0x08, DI
7468 SHLL $0x05, DI
7469 ORL DI, R11
7470 MOVB R11, (AX)
7471 ADDQ $0x02, AX
7472 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7473
7474four_bytes_remain_match_nolit_encodeBetterBlockAsm4MB:
7475 TESTL R11, R11
7476 JZ match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7477 XORL BX, BX
7478 LEAL -1(BX)(R11*4), R11
7479 MOVB R11, (AX)
7480 MOVL DI, 1(AX)
7481 ADDQ $0x05, AX
7482 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7483
7484two_byte_offset_match_nolit_encodeBetterBlockAsm4MB:
7485 CMPL R11, $0x40
7486 JBE two_byte_offset_short_match_nolit_encodeBetterBlockAsm4MB
7487 CMPL DI, $0x00000800
7488 JAE long_offset_short_match_nolit_encodeBetterBlockAsm4MB
7489 MOVL $0x00000001, BX
7490 LEAL 16(BX), BX
7491 MOVB DI, 1(AX)
7492 SHRL $0x08, DI
7493 SHLL $0x05, DI
7494 ORL DI, BX
7495 MOVB BL, (AX)
7496 ADDQ $0x02, AX
7497 SUBL $0x08, R11
7498
7499 // emitRepeat
7500 LEAL -4(R11), R11
7501 JMP cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b
7502 MOVL R11, BX
7503 LEAL -4(R11), R11
7504 CMPL BX, $0x08
7505 JBE repeat_two_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b
7506 CMPL BX, $0x0c
7507 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b
7508 CMPL DI, $0x00000800
7509 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b
7510
7511cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b:
7512 CMPL R11, $0x00000104
7513 JB repeat_three_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b
7514 CMPL R11, $0x00010100
7515 JB repeat_four_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b
7516 LEAL -65536(R11), R11
7517 MOVL R11, DI
7518 MOVW $0x001d, (AX)
7519 MOVW R11, 2(AX)
7520 SARL $0x10, DI
7521 MOVB DI, 4(AX)
7522 ADDQ $0x05, AX
7523 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7524
7525repeat_four_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b:
7526 LEAL -256(R11), R11
7527 MOVW $0x0019, (AX)
7528 MOVW R11, 2(AX)
7529 ADDQ $0x04, AX
7530 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7531
7532repeat_three_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b:
7533 LEAL -4(R11), R11
7534 MOVW $0x0015, (AX)
7535 MOVB R11, 2(AX)
7536 ADDQ $0x03, AX
7537 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7538
7539repeat_two_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b:
7540 SHLL $0x02, R11
7541 ORL $0x01, R11
7542 MOVW R11, (AX)
7543 ADDQ $0x02, AX
7544 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7545
7546repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short_2b:
7547 XORQ BX, BX
7548 LEAL 1(BX)(R11*4), R11
7549 MOVB DI, 1(AX)
7550 SARL $0x08, DI
7551 SHLL $0x05, DI
7552 ORL DI, R11
7553 MOVB R11, (AX)
7554 ADDQ $0x02, AX
7555 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7556
7557long_offset_short_match_nolit_encodeBetterBlockAsm4MB:
7558 MOVB $0xee, (AX)
7559 MOVW DI, 1(AX)
7560 LEAL -60(R11), R11
7561 ADDQ $0x03, AX
7562
7563 // emitRepeat
7564 MOVL R11, BX
7565 LEAL -4(R11), R11
7566 CMPL BX, $0x08
7567 JBE repeat_two_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short
7568 CMPL BX, $0x0c
7569 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short
7570 CMPL DI, $0x00000800
7571 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short
7572
7573cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short:
7574 CMPL R11, $0x00000104
7575 JB repeat_three_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short
7576 CMPL R11, $0x00010100
7577 JB repeat_four_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short
7578 LEAL -65536(R11), R11
7579 MOVL R11, DI
7580 MOVW $0x001d, (AX)
7581 MOVW R11, 2(AX)
7582 SARL $0x10, DI
7583 MOVB DI, 4(AX)
7584 ADDQ $0x05, AX
7585 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7586
7587repeat_four_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short:
7588 LEAL -256(R11), R11
7589 MOVW $0x0019, (AX)
7590 MOVW R11, 2(AX)
7591 ADDQ $0x04, AX
7592 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7593
7594repeat_three_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short:
7595 LEAL -4(R11), R11
7596 MOVW $0x0015, (AX)
7597 MOVB R11, 2(AX)
7598 ADDQ $0x03, AX
7599 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7600
7601repeat_two_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short:
7602 SHLL $0x02, R11
7603 ORL $0x01, R11
7604 MOVW R11, (AX)
7605 ADDQ $0x02, AX
7606 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7607
7608repeat_two_offset_match_nolit_encodeBetterBlockAsm4MB_emit_copy_short:
7609 XORQ BX, BX
7610 LEAL 1(BX)(R11*4), R11
7611 MOVB DI, 1(AX)
7612 SARL $0x08, DI
7613 SHLL $0x05, DI
7614 ORL DI, R11
7615 MOVB R11, (AX)
7616 ADDQ $0x02, AX
7617 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7618
7619two_byte_offset_short_match_nolit_encodeBetterBlockAsm4MB:
7620 MOVL R11, BX
7621 SHLL $0x02, BX
7622 CMPL R11, $0x0c
7623 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm4MB
7624 CMPL DI, $0x00000800
7625 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm4MB
7626 LEAL -15(BX), BX
7627 MOVB DI, 1(AX)
7628 SHRL $0x08, DI
7629 SHLL $0x05, DI
7630 ORL DI, BX
7631 MOVB BL, (AX)
7632 ADDQ $0x02, AX
7633 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7634
7635emit_copy_three_match_nolit_encodeBetterBlockAsm4MB:
7636 LEAL -2(BX), BX
7637 MOVB BL, (AX)
7638 MOVW DI, 1(AX)
7639 ADDQ $0x03, AX
7640 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7641
7642match_is_repeat_encodeBetterBlockAsm4MB:
7643 MOVL 12(SP), BX
7644 CMPL BX, SI
7645 JEQ emit_literal_done_match_emit_repeat_encodeBetterBlockAsm4MB
7646 MOVL SI, R8
7647 MOVL SI, 12(SP)
7648 LEAQ (DX)(BX*1), R9
7649 SUBL BX, R8
7650 LEAL -1(R8), BX
7651 CMPL BX, $0x3c
7652 JB one_byte_match_emit_repeat_encodeBetterBlockAsm4MB
7653 CMPL BX, $0x00000100
7654 JB two_bytes_match_emit_repeat_encodeBetterBlockAsm4MB
7655 CMPL BX, $0x00010000
7656 JB three_bytes_match_emit_repeat_encodeBetterBlockAsm4MB
7657 MOVL BX, R10
7658 SHRL $0x10, R10
7659 MOVB $0xf8, (AX)
7660 MOVW BX, 1(AX)
7661 MOVB R10, 3(AX)
7662 ADDQ $0x04, AX
7663 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm4MB
7664
7665three_bytes_match_emit_repeat_encodeBetterBlockAsm4MB:
7666 MOVB $0xf4, (AX)
7667 MOVW BX, 1(AX)
7668 ADDQ $0x03, AX
7669 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm4MB
7670
7671two_bytes_match_emit_repeat_encodeBetterBlockAsm4MB:
7672 MOVB $0xf0, (AX)
7673 MOVB BL, 1(AX)
7674 ADDQ $0x02, AX
7675 CMPL BX, $0x40
7676 JB memmove_match_emit_repeat_encodeBetterBlockAsm4MB
7677 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm4MB
7678
7679one_byte_match_emit_repeat_encodeBetterBlockAsm4MB:
7680 SHLB $0x02, BL
7681 MOVB BL, (AX)
7682 ADDQ $0x01, AX
7683
7684memmove_match_emit_repeat_encodeBetterBlockAsm4MB:
7685 LEAQ (AX)(R8*1), BX
7686
7687 // genMemMoveShort
7688 CMPQ R8, $0x04
7689 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_4
7690 CMPQ R8, $0x08
7691 JB emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_4through7
7692 CMPQ R8, $0x10
7693 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_8through16
7694 CMPQ R8, $0x20
7695 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_17through32
7696 JMP emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_33through64
7697
7698emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_4:
7699 MOVL (R9), R10
7700 MOVL R10, (AX)
7701 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm4MB
7702
7703emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_4through7:
7704 MOVL (R9), R10
7705 MOVL -4(R9)(R8*1), R9
7706 MOVL R10, (AX)
7707 MOVL R9, -4(AX)(R8*1)
7708 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm4MB
7709
7710emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_8through16:
7711 MOVQ (R9), R10
7712 MOVQ -8(R9)(R8*1), R9
7713 MOVQ R10, (AX)
7714 MOVQ R9, -8(AX)(R8*1)
7715 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm4MB
7716
7717emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_17through32:
7718 MOVOU (R9), X0
7719 MOVOU -16(R9)(R8*1), X1
7720 MOVOU X0, (AX)
7721 MOVOU X1, -16(AX)(R8*1)
7722 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm4MB
7723
7724emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm4MB_memmove_move_33through64:
7725 MOVOU (R9), X0
7726 MOVOU 16(R9), X1
7727 MOVOU -32(R9)(R8*1), X2
7728 MOVOU -16(R9)(R8*1), X3
7729 MOVOU X0, (AX)
7730 MOVOU X1, 16(AX)
7731 MOVOU X2, -32(AX)(R8*1)
7732 MOVOU X3, -16(AX)(R8*1)
7733
7734memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm4MB:
7735 MOVQ BX, AX
7736 JMP emit_literal_done_match_emit_repeat_encodeBetterBlockAsm4MB
7737
7738memmove_long_match_emit_repeat_encodeBetterBlockAsm4MB:
7739 LEAQ (AX)(R8*1), BX
7740
7741 // genMemMoveLong
7742 MOVOU (R9), X0
7743 MOVOU 16(R9), X1
7744 MOVOU -32(R9)(R8*1), X2
7745 MOVOU -16(R9)(R8*1), X3
7746 MOVQ R8, R12
7747 SHRQ $0x05, R12
7748 MOVQ AX, R10
7749 ANDL $0x0000001f, R10
7750 MOVQ $0x00000040, R13
7751 SUBQ R10, R13
7752 DECQ R12
7753 JA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32
7754 LEAQ -32(R9)(R13*1), R10
7755 LEAQ -32(AX)(R13*1), R14
7756
7757emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm4MBlarge_big_loop_back:
7758 MOVOU (R10), X4
7759 MOVOU 16(R10), X5
7760 MOVOA X4, (R14)
7761 MOVOA X5, 16(R14)
7762 ADDQ $0x20, R14
7763 ADDQ $0x20, R10
7764 ADDQ $0x20, R13
7765 DECQ R12
7766 JNA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm4MBlarge_big_loop_back
7767
7768emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32:
7769 MOVOU -32(R9)(R13*1), X4
7770 MOVOU -16(R9)(R13*1), X5
7771 MOVOA X4, -32(AX)(R13*1)
7772 MOVOA X5, -16(AX)(R13*1)
7773 ADDQ $0x20, R13
7774 CMPQ R8, R13
7775 JAE emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32
7776 MOVOU X0, (AX)
7777 MOVOU X1, 16(AX)
7778 MOVOU X2, -32(AX)(R8*1)
7779 MOVOU X3, -16(AX)(R8*1)
7780 MOVQ BX, AX
7781
7782emit_literal_done_match_emit_repeat_encodeBetterBlockAsm4MB:
7783 ADDL R11, CX
7784 ADDL $0x04, R11
7785 MOVL CX, 12(SP)
7786
7787 // emitRepeat
7788 MOVL R11, BX
7789 LEAL -4(R11), R11
7790 CMPL BX, $0x08
7791 JBE repeat_two_match_nolit_repeat_encodeBetterBlockAsm4MB
7792 CMPL BX, $0x0c
7793 JAE cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm4MB
7794 CMPL DI, $0x00000800
7795 JB repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm4MB
7796
7797cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm4MB:
7798 CMPL R11, $0x00000104
7799 JB repeat_three_match_nolit_repeat_encodeBetterBlockAsm4MB
7800 CMPL R11, $0x00010100
7801 JB repeat_four_match_nolit_repeat_encodeBetterBlockAsm4MB
7802 LEAL -65536(R11), R11
7803 MOVL R11, DI
7804 MOVW $0x001d, (AX)
7805 MOVW R11, 2(AX)
7806 SARL $0x10, DI
7807 MOVB DI, 4(AX)
7808 ADDQ $0x05, AX
7809 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7810
7811repeat_four_match_nolit_repeat_encodeBetterBlockAsm4MB:
7812 LEAL -256(R11), R11
7813 MOVW $0x0019, (AX)
7814 MOVW R11, 2(AX)
7815 ADDQ $0x04, AX
7816 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7817
7818repeat_three_match_nolit_repeat_encodeBetterBlockAsm4MB:
7819 LEAL -4(R11), R11
7820 MOVW $0x0015, (AX)
7821 MOVB R11, 2(AX)
7822 ADDQ $0x03, AX
7823 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7824
7825repeat_two_match_nolit_repeat_encodeBetterBlockAsm4MB:
7826 SHLL $0x02, R11
7827 ORL $0x01, R11
7828 MOVW R11, (AX)
7829 ADDQ $0x02, AX
7830 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm4MB
7831
7832repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm4MB:
7833 XORQ BX, BX
7834 LEAL 1(BX)(R11*4), R11
7835 MOVB DI, 1(AX)
7836 SARL $0x08, DI
7837 SHLL $0x05, DI
7838 ORL DI, R11
7839 MOVB R11, (AX)
7840 ADDQ $0x02, AX
7841
7842match_nolit_emitcopy_end_encodeBetterBlockAsm4MB:
7843 CMPL CX, 8(SP)
7844 JAE emit_remainder_encodeBetterBlockAsm4MB
7845 CMPQ AX, (SP)
7846 JB match_nolit_dst_ok_encodeBetterBlockAsm4MB
7847 MOVQ $0x00000000, ret+48(FP)
7848 RET
7849
7850match_nolit_dst_ok_encodeBetterBlockAsm4MB:
7851 MOVQ $0x00cf1bbcdcbfa563, BX
7852 MOVQ $0x9e3779b1, DI
7853 LEAQ 1(SI), SI
7854 LEAQ -2(CX), R8
7855 MOVQ (DX)(SI*1), R9
7856 MOVQ 1(DX)(SI*1), R10
7857 MOVQ (DX)(R8*1), R11
7858 MOVQ 1(DX)(R8*1), R12
7859 SHLQ $0x08, R9
7860 IMULQ BX, R9
7861 SHRQ $0x2f, R9
7862 SHLQ $0x20, R10
7863 IMULQ DI, R10
7864 SHRQ $0x32, R10
7865 SHLQ $0x08, R11
7866 IMULQ BX, R11
7867 SHRQ $0x2f, R11
7868 SHLQ $0x20, R12
7869 IMULQ DI, R12
7870 SHRQ $0x32, R12
7871 LEAQ 1(SI), DI
7872 LEAQ 1(R8), R13
7873 MOVL SI, 24(SP)(R9*4)
7874 MOVL R8, 24(SP)(R11*4)
7875 MOVL DI, 524312(SP)(R10*4)
7876 MOVL R13, 524312(SP)(R12*4)
7877 LEAQ 1(R8)(SI*1), DI
7878 SHRQ $0x01, DI
7879 ADDQ $0x01, SI
7880 SUBQ $0x01, R8
7881
7882index_loop_encodeBetterBlockAsm4MB:
7883 CMPQ DI, R8
7884 JAE search_loop_encodeBetterBlockAsm4MB
7885 MOVQ (DX)(SI*1), R9
7886 MOVQ (DX)(DI*1), R10
7887 SHLQ $0x08, R9
7888 IMULQ BX, R9
7889 SHRQ $0x2f, R9
7890 SHLQ $0x08, R10
7891 IMULQ BX, R10
7892 SHRQ $0x2f, R10
7893 MOVL SI, 24(SP)(R9*4)
7894 MOVL DI, 24(SP)(R10*4)
7895 ADDQ $0x02, SI
7896 ADDQ $0x02, DI
7897 JMP index_loop_encodeBetterBlockAsm4MB
7898
7899emit_remainder_encodeBetterBlockAsm4MB:
7900 MOVQ src_len+32(FP), CX
7901 SUBL 12(SP), CX
7902 LEAQ 4(AX)(CX*1), CX
7903 CMPQ CX, (SP)
7904 JB emit_remainder_ok_encodeBetterBlockAsm4MB
7905 MOVQ $0x00000000, ret+48(FP)
7906 RET
7907
7908emit_remainder_ok_encodeBetterBlockAsm4MB:
7909 MOVQ src_len+32(FP), CX
7910 MOVL 12(SP), BX
7911 CMPL BX, CX
7912 JEQ emit_literal_done_emit_remainder_encodeBetterBlockAsm4MB
7913 MOVL CX, SI
7914 MOVL CX, 12(SP)
7915 LEAQ (DX)(BX*1), CX
7916 SUBL BX, SI
7917 LEAL -1(SI), DX
7918 CMPL DX, $0x3c
7919 JB one_byte_emit_remainder_encodeBetterBlockAsm4MB
7920 CMPL DX, $0x00000100
7921 JB two_bytes_emit_remainder_encodeBetterBlockAsm4MB
7922 CMPL DX, $0x00010000
7923 JB three_bytes_emit_remainder_encodeBetterBlockAsm4MB
7924 MOVL DX, BX
7925 SHRL $0x10, BX
7926 MOVB $0xf8, (AX)
7927 MOVW DX, 1(AX)
7928 MOVB BL, 3(AX)
7929 ADDQ $0x04, AX
7930 JMP memmove_long_emit_remainder_encodeBetterBlockAsm4MB
7931
7932three_bytes_emit_remainder_encodeBetterBlockAsm4MB:
7933 MOVB $0xf4, (AX)
7934 MOVW DX, 1(AX)
7935 ADDQ $0x03, AX
7936 JMP memmove_long_emit_remainder_encodeBetterBlockAsm4MB
7937
7938two_bytes_emit_remainder_encodeBetterBlockAsm4MB:
7939 MOVB $0xf0, (AX)
7940 MOVB DL, 1(AX)
7941 ADDQ $0x02, AX
7942 CMPL DX, $0x40
7943 JB memmove_emit_remainder_encodeBetterBlockAsm4MB
7944 JMP memmove_long_emit_remainder_encodeBetterBlockAsm4MB
7945
7946one_byte_emit_remainder_encodeBetterBlockAsm4MB:
7947 SHLB $0x02, DL
7948 MOVB DL, (AX)
7949 ADDQ $0x01, AX
7950
7951memmove_emit_remainder_encodeBetterBlockAsm4MB:
7952 LEAQ (AX)(SI*1), DX
7953 MOVL SI, BX
7954
7955 // genMemMoveShort
7956 CMPQ BX, $0x03
7957 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_1or2
7958 JE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_3
7959 CMPQ BX, $0x08
7960 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_4through7
7961 CMPQ BX, $0x10
7962 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_8through16
7963 CMPQ BX, $0x20
7964 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_17through32
7965 JMP emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_33through64
7966
7967emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_1or2:
7968 MOVB (CX), SI
7969 MOVB -1(CX)(BX*1), CL
7970 MOVB SI, (AX)
7971 MOVB CL, -1(AX)(BX*1)
7972 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm4MB
7973
7974emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_3:
7975 MOVW (CX), SI
7976 MOVB 2(CX), CL
7977 MOVW SI, (AX)
7978 MOVB CL, 2(AX)
7979 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm4MB
7980
7981emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_4through7:
7982 MOVL (CX), SI
7983 MOVL -4(CX)(BX*1), CX
7984 MOVL SI, (AX)
7985 MOVL CX, -4(AX)(BX*1)
7986 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm4MB
7987
7988emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_8through16:
7989 MOVQ (CX), SI
7990 MOVQ -8(CX)(BX*1), CX
7991 MOVQ SI, (AX)
7992 MOVQ CX, -8(AX)(BX*1)
7993 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm4MB
7994
7995emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_17through32:
7996 MOVOU (CX), X0
7997 MOVOU -16(CX)(BX*1), X1
7998 MOVOU X0, (AX)
7999 MOVOU X1, -16(AX)(BX*1)
8000 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm4MB
8001
8002emit_lit_memmove_emit_remainder_encodeBetterBlockAsm4MB_memmove_move_33through64:
8003 MOVOU (CX), X0
8004 MOVOU 16(CX), X1
8005 MOVOU -32(CX)(BX*1), X2
8006 MOVOU -16(CX)(BX*1), X3
8007 MOVOU X0, (AX)
8008 MOVOU X1, 16(AX)
8009 MOVOU X2, -32(AX)(BX*1)
8010 MOVOU X3, -16(AX)(BX*1)
8011
8012memmove_end_copy_emit_remainder_encodeBetterBlockAsm4MB:
8013 MOVQ DX, AX
8014 JMP emit_literal_done_emit_remainder_encodeBetterBlockAsm4MB
8015
8016memmove_long_emit_remainder_encodeBetterBlockAsm4MB:
8017 LEAQ (AX)(SI*1), DX
8018 MOVL SI, BX
8019
8020 // genMemMoveLong
8021 MOVOU (CX), X0
8022 MOVOU 16(CX), X1
8023 MOVOU -32(CX)(BX*1), X2
8024 MOVOU -16(CX)(BX*1), X3
8025 MOVQ BX, DI
8026 SHRQ $0x05, DI
8027 MOVQ AX, SI
8028 ANDL $0x0000001f, SI
8029 MOVQ $0x00000040, R8
8030 SUBQ SI, R8
8031 DECQ DI
8032 JA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32
8033 LEAQ -32(CX)(R8*1), SI
8034 LEAQ -32(AX)(R8*1), R9
8035
8036emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm4MBlarge_big_loop_back:
8037 MOVOU (SI), X4
8038 MOVOU 16(SI), X5
8039 MOVOA X4, (R9)
8040 MOVOA X5, 16(R9)
8041 ADDQ $0x20, R9
8042 ADDQ $0x20, SI
8043 ADDQ $0x20, R8
8044 DECQ DI
8045 JNA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm4MBlarge_big_loop_back
8046
8047emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32:
8048 MOVOU -32(CX)(R8*1), X4
8049 MOVOU -16(CX)(R8*1), X5
8050 MOVOA X4, -32(AX)(R8*1)
8051 MOVOA X5, -16(AX)(R8*1)
8052 ADDQ $0x20, R8
8053 CMPQ BX, R8
8054 JAE emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm4MBlarge_forward_sse_loop_32
8055 MOVOU X0, (AX)
8056 MOVOU X1, 16(AX)
8057 MOVOU X2, -32(AX)(BX*1)
8058 MOVOU X3, -16(AX)(BX*1)
8059 MOVQ DX, AX
8060
8061emit_literal_done_emit_remainder_encodeBetterBlockAsm4MB:
8062 MOVQ dst_base+0(FP), CX
8063 SUBQ CX, AX
8064 MOVQ AX, ret+48(FP)
8065 RET
8066
8067// func encodeBetterBlockAsm12B(dst []byte, src []byte) int
8068// Requires: BMI, SSE2
8069TEXT ·encodeBetterBlockAsm12B(SB), $81944-56
8070 MOVQ dst_base+0(FP), AX
8071 MOVQ $0x00000280, CX
8072 LEAQ 24(SP), DX
8073 PXOR X0, X0
8074
8075zero_loop_encodeBetterBlockAsm12B:
8076 MOVOU X0, (DX)
8077 MOVOU X0, 16(DX)
8078 MOVOU X0, 32(DX)
8079 MOVOU X0, 48(DX)
8080 MOVOU X0, 64(DX)
8081 MOVOU X0, 80(DX)
8082 MOVOU X0, 96(DX)
8083 MOVOU X0, 112(DX)
8084 ADDQ $0x80, DX
8085 DECQ CX
8086 JNZ zero_loop_encodeBetterBlockAsm12B
8087 MOVL $0x00000000, 12(SP)
8088 MOVQ src_len+32(FP), CX
8089 LEAQ -6(CX), DX
8090 LEAQ -8(CX), BX
8091 MOVL BX, 8(SP)
8092 SHRQ $0x05, CX
8093 SUBL CX, DX
8094 LEAQ (AX)(DX*1), DX
8095 MOVQ DX, (SP)
8096 MOVL $0x00000001, CX
8097 MOVL $0x00000000, 16(SP)
8098 MOVQ src_base+24(FP), DX
8099
8100search_loop_encodeBetterBlockAsm12B:
8101 MOVL CX, BX
8102 SUBL 12(SP), BX
8103 SHRL $0x06, BX
8104 LEAL 1(CX)(BX*1), BX
8105 CMPL BX, 8(SP)
8106 JAE emit_remainder_encodeBetterBlockAsm12B
8107 MOVQ (DX)(CX*1), SI
8108 MOVL BX, 20(SP)
8109 MOVQ $0x0000cf1bbcdcbf9b, R8
8110 MOVQ $0x9e3779b1, BX
8111 MOVQ SI, R9
8112 MOVQ SI, R10
8113 SHLQ $0x10, R9
8114 IMULQ R8, R9
8115 SHRQ $0x32, R9
8116 SHLQ $0x20, R10
8117 IMULQ BX, R10
8118 SHRQ $0x34, R10
8119 MOVL 24(SP)(R9*4), BX
8120 MOVL 65560(SP)(R10*4), DI
8121 MOVL CX, 24(SP)(R9*4)
8122 MOVL CX, 65560(SP)(R10*4)
8123 MOVQ (DX)(BX*1), R9
8124 MOVQ (DX)(DI*1), R10
8125 CMPQ R9, SI
8126 JEQ candidate_match_encodeBetterBlockAsm12B
8127 CMPQ R10, SI
8128 JNE no_short_found_encodeBetterBlockAsm12B
8129 MOVL DI, BX
8130 JMP candidate_match_encodeBetterBlockAsm12B
8131
8132no_short_found_encodeBetterBlockAsm12B:
8133 CMPL R9, SI
8134 JEQ candidate_match_encodeBetterBlockAsm12B
8135 CMPL R10, SI
8136 JEQ candidateS_match_encodeBetterBlockAsm12B
8137 MOVL 20(SP), CX
8138 JMP search_loop_encodeBetterBlockAsm12B
8139
8140candidateS_match_encodeBetterBlockAsm12B:
8141 SHRQ $0x08, SI
8142 MOVQ SI, R9
8143 SHLQ $0x10, R9
8144 IMULQ R8, R9
8145 SHRQ $0x32, R9
8146 MOVL 24(SP)(R9*4), BX
8147 INCL CX
8148 MOVL CX, 24(SP)(R9*4)
8149 CMPL (DX)(BX*1), SI
8150 JEQ candidate_match_encodeBetterBlockAsm12B
8151 DECL CX
8152 MOVL DI, BX
8153
8154candidate_match_encodeBetterBlockAsm12B:
8155 MOVL 12(SP), SI
8156 TESTL BX, BX
8157 JZ match_extend_back_end_encodeBetterBlockAsm12B
8158
8159match_extend_back_loop_encodeBetterBlockAsm12B:
8160 CMPL CX, SI
8161 JBE match_extend_back_end_encodeBetterBlockAsm12B
8162 MOVB -1(DX)(BX*1), DI
8163 MOVB -1(DX)(CX*1), R8
8164 CMPB DI, R8
8165 JNE match_extend_back_end_encodeBetterBlockAsm12B
8166 LEAL -1(CX), CX
8167 DECL BX
8168 JZ match_extend_back_end_encodeBetterBlockAsm12B
8169 JMP match_extend_back_loop_encodeBetterBlockAsm12B
8170
8171match_extend_back_end_encodeBetterBlockAsm12B:
8172 MOVL CX, SI
8173 SUBL 12(SP), SI
8174 LEAQ 3(AX)(SI*1), SI
8175 CMPQ SI, (SP)
8176 JB match_dst_size_check_encodeBetterBlockAsm12B
8177 MOVQ $0x00000000, ret+48(FP)
8178 RET
8179
8180match_dst_size_check_encodeBetterBlockAsm12B:
8181 MOVL CX, SI
8182 ADDL $0x04, CX
8183 ADDL $0x04, BX
8184 MOVQ src_len+32(FP), DI
8185 SUBL CX, DI
8186 LEAQ (DX)(CX*1), R8
8187 LEAQ (DX)(BX*1), R9
8188
8189 // matchLen
8190 XORL R11, R11
8191
8192matchlen_loopback_16_match_nolit_encodeBetterBlockAsm12B:
8193 CMPL DI, $0x10
8194 JB matchlen_match8_match_nolit_encodeBetterBlockAsm12B
8195 MOVQ (R8)(R11*1), R10
8196 MOVQ 8(R8)(R11*1), R12
8197 XORQ (R9)(R11*1), R10
8198 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm12B
8199 XORQ 8(R9)(R11*1), R12
8200 JNZ matchlen_bsf_16match_nolit_encodeBetterBlockAsm12B
8201 LEAL -16(DI), DI
8202 LEAL 16(R11), R11
8203 JMP matchlen_loopback_16_match_nolit_encodeBetterBlockAsm12B
8204
8205matchlen_bsf_16match_nolit_encodeBetterBlockAsm12B:
8206#ifdef GOAMD64_v3
8207 TZCNTQ R12, R12
8208
8209#else
8210 BSFQ R12, R12
8211
8212#endif
8213 SARQ $0x03, R12
8214 LEAL 8(R11)(R12*1), R11
8215 JMP match_nolit_end_encodeBetterBlockAsm12B
8216
8217matchlen_match8_match_nolit_encodeBetterBlockAsm12B:
8218 CMPL DI, $0x08
8219 JB matchlen_match4_match_nolit_encodeBetterBlockAsm12B
8220 MOVQ (R8)(R11*1), R10
8221 XORQ (R9)(R11*1), R10
8222 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm12B
8223 LEAL -8(DI), DI
8224 LEAL 8(R11), R11
8225 JMP matchlen_match4_match_nolit_encodeBetterBlockAsm12B
8226
8227matchlen_bsf_8_match_nolit_encodeBetterBlockAsm12B:
8228#ifdef GOAMD64_v3
8229 TZCNTQ R10, R10
8230
8231#else
8232 BSFQ R10, R10
8233
8234#endif
8235 SARQ $0x03, R10
8236 LEAL (R11)(R10*1), R11
8237 JMP match_nolit_end_encodeBetterBlockAsm12B
8238
8239matchlen_match4_match_nolit_encodeBetterBlockAsm12B:
8240 CMPL DI, $0x04
8241 JB matchlen_match2_match_nolit_encodeBetterBlockAsm12B
8242 MOVL (R8)(R11*1), R10
8243 CMPL (R9)(R11*1), R10
8244 JNE matchlen_match2_match_nolit_encodeBetterBlockAsm12B
8245 LEAL -4(DI), DI
8246 LEAL 4(R11), R11
8247
8248matchlen_match2_match_nolit_encodeBetterBlockAsm12B:
8249 CMPL DI, $0x01
8250 JE matchlen_match1_match_nolit_encodeBetterBlockAsm12B
8251 JB match_nolit_end_encodeBetterBlockAsm12B
8252 MOVW (R8)(R11*1), R10
8253 CMPW (R9)(R11*1), R10
8254 JNE matchlen_match1_match_nolit_encodeBetterBlockAsm12B
8255 LEAL 2(R11), R11
8256 SUBL $0x02, DI
8257 JZ match_nolit_end_encodeBetterBlockAsm12B
8258
8259matchlen_match1_match_nolit_encodeBetterBlockAsm12B:
8260 MOVB (R8)(R11*1), R10
8261 CMPB (R9)(R11*1), R10
8262 JNE match_nolit_end_encodeBetterBlockAsm12B
8263 LEAL 1(R11), R11
8264
8265match_nolit_end_encodeBetterBlockAsm12B:
8266 MOVL CX, DI
8267 SUBL BX, DI
8268
8269 // Check if repeat
8270 CMPL 16(SP), DI
8271 JEQ match_is_repeat_encodeBetterBlockAsm12B
8272 MOVL DI, 16(SP)
8273 MOVL 12(SP), BX
8274 CMPL BX, SI
8275 JEQ emit_literal_done_match_emit_encodeBetterBlockAsm12B
8276 MOVL SI, R8
8277 MOVL SI, 12(SP)
8278 LEAQ (DX)(BX*1), R9
8279 SUBL BX, R8
8280 LEAL -1(R8), BX
8281 CMPL BX, $0x3c
8282 JB one_byte_match_emit_encodeBetterBlockAsm12B
8283 CMPL BX, $0x00000100
8284 JB two_bytes_match_emit_encodeBetterBlockAsm12B
8285 JB three_bytes_match_emit_encodeBetterBlockAsm12B
8286
8287three_bytes_match_emit_encodeBetterBlockAsm12B:
8288 MOVB $0xf4, (AX)
8289 MOVW BX, 1(AX)
8290 ADDQ $0x03, AX
8291 JMP memmove_long_match_emit_encodeBetterBlockAsm12B
8292
8293two_bytes_match_emit_encodeBetterBlockAsm12B:
8294 MOVB $0xf0, (AX)
8295 MOVB BL, 1(AX)
8296 ADDQ $0x02, AX
8297 CMPL BX, $0x40
8298 JB memmove_match_emit_encodeBetterBlockAsm12B
8299 JMP memmove_long_match_emit_encodeBetterBlockAsm12B
8300
8301one_byte_match_emit_encodeBetterBlockAsm12B:
8302 SHLB $0x02, BL
8303 MOVB BL, (AX)
8304 ADDQ $0x01, AX
8305
8306memmove_match_emit_encodeBetterBlockAsm12B:
8307 LEAQ (AX)(R8*1), BX
8308
8309 // genMemMoveShort
8310 CMPQ R8, $0x04
8311 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_4
8312 CMPQ R8, $0x08
8313 JB emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_4through7
8314 CMPQ R8, $0x10
8315 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_8through16
8316 CMPQ R8, $0x20
8317 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_17through32
8318 JMP emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_33through64
8319
8320emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_4:
8321 MOVL (R9), R10
8322 MOVL R10, (AX)
8323 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm12B
8324
8325emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_4through7:
8326 MOVL (R9), R10
8327 MOVL -4(R9)(R8*1), R9
8328 MOVL R10, (AX)
8329 MOVL R9, -4(AX)(R8*1)
8330 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm12B
8331
8332emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_8through16:
8333 MOVQ (R9), R10
8334 MOVQ -8(R9)(R8*1), R9
8335 MOVQ R10, (AX)
8336 MOVQ R9, -8(AX)(R8*1)
8337 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm12B
8338
8339emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_17through32:
8340 MOVOU (R9), X0
8341 MOVOU -16(R9)(R8*1), X1
8342 MOVOU X0, (AX)
8343 MOVOU X1, -16(AX)(R8*1)
8344 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm12B
8345
8346emit_lit_memmove_match_emit_encodeBetterBlockAsm12B_memmove_move_33through64:
8347 MOVOU (R9), X0
8348 MOVOU 16(R9), X1
8349 MOVOU -32(R9)(R8*1), X2
8350 MOVOU -16(R9)(R8*1), X3
8351 MOVOU X0, (AX)
8352 MOVOU X1, 16(AX)
8353 MOVOU X2, -32(AX)(R8*1)
8354 MOVOU X3, -16(AX)(R8*1)
8355
8356memmove_end_copy_match_emit_encodeBetterBlockAsm12B:
8357 MOVQ BX, AX
8358 JMP emit_literal_done_match_emit_encodeBetterBlockAsm12B
8359
8360memmove_long_match_emit_encodeBetterBlockAsm12B:
8361 LEAQ (AX)(R8*1), BX
8362
8363 // genMemMoveLong
8364 MOVOU (R9), X0
8365 MOVOU 16(R9), X1
8366 MOVOU -32(R9)(R8*1), X2
8367 MOVOU -16(R9)(R8*1), X3
8368 MOVQ R8, R12
8369 SHRQ $0x05, R12
8370 MOVQ AX, R10
8371 ANDL $0x0000001f, R10
8372 MOVQ $0x00000040, R13
8373 SUBQ R10, R13
8374 DECQ R12
8375 JA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm12Blarge_forward_sse_loop_32
8376 LEAQ -32(R9)(R13*1), R10
8377 LEAQ -32(AX)(R13*1), R14
8378
8379emit_lit_memmove_long_match_emit_encodeBetterBlockAsm12Blarge_big_loop_back:
8380 MOVOU (R10), X4
8381 MOVOU 16(R10), X5
8382 MOVOA X4, (R14)
8383 MOVOA X5, 16(R14)
8384 ADDQ $0x20, R14
8385 ADDQ $0x20, R10
8386 ADDQ $0x20, R13
8387 DECQ R12
8388 JNA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm12Blarge_big_loop_back
8389
8390emit_lit_memmove_long_match_emit_encodeBetterBlockAsm12Blarge_forward_sse_loop_32:
8391 MOVOU -32(R9)(R13*1), X4
8392 MOVOU -16(R9)(R13*1), X5
8393 MOVOA X4, -32(AX)(R13*1)
8394 MOVOA X5, -16(AX)(R13*1)
8395 ADDQ $0x20, R13
8396 CMPQ R8, R13
8397 JAE emit_lit_memmove_long_match_emit_encodeBetterBlockAsm12Blarge_forward_sse_loop_32
8398 MOVOU X0, (AX)
8399 MOVOU X1, 16(AX)
8400 MOVOU X2, -32(AX)(R8*1)
8401 MOVOU X3, -16(AX)(R8*1)
8402 MOVQ BX, AX
8403
8404emit_literal_done_match_emit_encodeBetterBlockAsm12B:
8405 ADDL R11, CX
8406 ADDL $0x04, R11
8407 MOVL CX, 12(SP)
8408
8409 // emitCopy
8410 CMPL R11, $0x40
8411 JBE two_byte_offset_short_match_nolit_encodeBetterBlockAsm12B
8412 CMPL DI, $0x00000800
8413 JAE long_offset_short_match_nolit_encodeBetterBlockAsm12B
8414 MOVL $0x00000001, BX
8415 LEAL 16(BX), BX
8416 MOVB DI, 1(AX)
8417 SHRL $0x08, DI
8418 SHLL $0x05, DI
8419 ORL DI, BX
8420 MOVB BL, (AX)
8421 ADDQ $0x02, AX
8422 SUBL $0x08, R11
8423
8424 // emitRepeat
8425 LEAL -4(R11), R11
8426 JMP cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b
8427 MOVL R11, BX
8428 LEAL -4(R11), R11
8429 CMPL BX, $0x08
8430 JBE repeat_two_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b
8431 CMPL BX, $0x0c
8432 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b
8433 CMPL DI, $0x00000800
8434 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b
8435
8436cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b:
8437 CMPL R11, $0x00000104
8438 JB repeat_three_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b
8439 LEAL -256(R11), R11
8440 MOVW $0x0019, (AX)
8441 MOVW R11, 2(AX)
8442 ADDQ $0x04, AX
8443 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8444
8445repeat_three_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b:
8446 LEAL -4(R11), R11
8447 MOVW $0x0015, (AX)
8448 MOVB R11, 2(AX)
8449 ADDQ $0x03, AX
8450 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8451
8452repeat_two_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b:
8453 SHLL $0x02, R11
8454 ORL $0x01, R11
8455 MOVW R11, (AX)
8456 ADDQ $0x02, AX
8457 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8458
8459repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short_2b:
8460 XORQ BX, BX
8461 LEAL 1(BX)(R11*4), R11
8462 MOVB DI, 1(AX)
8463 SARL $0x08, DI
8464 SHLL $0x05, DI
8465 ORL DI, R11
8466 MOVB R11, (AX)
8467 ADDQ $0x02, AX
8468 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8469
8470long_offset_short_match_nolit_encodeBetterBlockAsm12B:
8471 MOVB $0xee, (AX)
8472 MOVW DI, 1(AX)
8473 LEAL -60(R11), R11
8474 ADDQ $0x03, AX
8475
8476 // emitRepeat
8477 MOVL R11, BX
8478 LEAL -4(R11), R11
8479 CMPL BX, $0x08
8480 JBE repeat_two_match_nolit_encodeBetterBlockAsm12B_emit_copy_short
8481 CMPL BX, $0x0c
8482 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short
8483 CMPL DI, $0x00000800
8484 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short
8485
8486cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short:
8487 CMPL R11, $0x00000104
8488 JB repeat_three_match_nolit_encodeBetterBlockAsm12B_emit_copy_short
8489 LEAL -256(R11), R11
8490 MOVW $0x0019, (AX)
8491 MOVW R11, 2(AX)
8492 ADDQ $0x04, AX
8493 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8494
8495repeat_three_match_nolit_encodeBetterBlockAsm12B_emit_copy_short:
8496 LEAL -4(R11), R11
8497 MOVW $0x0015, (AX)
8498 MOVB R11, 2(AX)
8499 ADDQ $0x03, AX
8500 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8501
8502repeat_two_match_nolit_encodeBetterBlockAsm12B_emit_copy_short:
8503 SHLL $0x02, R11
8504 ORL $0x01, R11
8505 MOVW R11, (AX)
8506 ADDQ $0x02, AX
8507 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8508
8509repeat_two_offset_match_nolit_encodeBetterBlockAsm12B_emit_copy_short:
8510 XORQ BX, BX
8511 LEAL 1(BX)(R11*4), R11
8512 MOVB DI, 1(AX)
8513 SARL $0x08, DI
8514 SHLL $0x05, DI
8515 ORL DI, R11
8516 MOVB R11, (AX)
8517 ADDQ $0x02, AX
8518 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8519
8520two_byte_offset_short_match_nolit_encodeBetterBlockAsm12B:
8521 MOVL R11, BX
8522 SHLL $0x02, BX
8523 CMPL R11, $0x0c
8524 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm12B
8525 CMPL DI, $0x00000800
8526 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm12B
8527 LEAL -15(BX), BX
8528 MOVB DI, 1(AX)
8529 SHRL $0x08, DI
8530 SHLL $0x05, DI
8531 ORL DI, BX
8532 MOVB BL, (AX)
8533 ADDQ $0x02, AX
8534 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8535
8536emit_copy_three_match_nolit_encodeBetterBlockAsm12B:
8537 LEAL -2(BX), BX
8538 MOVB BL, (AX)
8539 MOVW DI, 1(AX)
8540 ADDQ $0x03, AX
8541 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8542
8543match_is_repeat_encodeBetterBlockAsm12B:
8544 MOVL 12(SP), BX
8545 CMPL BX, SI
8546 JEQ emit_literal_done_match_emit_repeat_encodeBetterBlockAsm12B
8547 MOVL SI, R8
8548 MOVL SI, 12(SP)
8549 LEAQ (DX)(BX*1), R9
8550 SUBL BX, R8
8551 LEAL -1(R8), BX
8552 CMPL BX, $0x3c
8553 JB one_byte_match_emit_repeat_encodeBetterBlockAsm12B
8554 CMPL BX, $0x00000100
8555 JB two_bytes_match_emit_repeat_encodeBetterBlockAsm12B
8556 JB three_bytes_match_emit_repeat_encodeBetterBlockAsm12B
8557
8558three_bytes_match_emit_repeat_encodeBetterBlockAsm12B:
8559 MOVB $0xf4, (AX)
8560 MOVW BX, 1(AX)
8561 ADDQ $0x03, AX
8562 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm12B
8563
8564two_bytes_match_emit_repeat_encodeBetterBlockAsm12B:
8565 MOVB $0xf0, (AX)
8566 MOVB BL, 1(AX)
8567 ADDQ $0x02, AX
8568 CMPL BX, $0x40
8569 JB memmove_match_emit_repeat_encodeBetterBlockAsm12B
8570 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm12B
8571
8572one_byte_match_emit_repeat_encodeBetterBlockAsm12B:
8573 SHLB $0x02, BL
8574 MOVB BL, (AX)
8575 ADDQ $0x01, AX
8576
8577memmove_match_emit_repeat_encodeBetterBlockAsm12B:
8578 LEAQ (AX)(R8*1), BX
8579
8580 // genMemMoveShort
8581 CMPQ R8, $0x04
8582 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_4
8583 CMPQ R8, $0x08
8584 JB emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_4through7
8585 CMPQ R8, $0x10
8586 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_8through16
8587 CMPQ R8, $0x20
8588 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_17through32
8589 JMP emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_33through64
8590
8591emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_4:
8592 MOVL (R9), R10
8593 MOVL R10, (AX)
8594 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm12B
8595
8596emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_4through7:
8597 MOVL (R9), R10
8598 MOVL -4(R9)(R8*1), R9
8599 MOVL R10, (AX)
8600 MOVL R9, -4(AX)(R8*1)
8601 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm12B
8602
8603emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_8through16:
8604 MOVQ (R9), R10
8605 MOVQ -8(R9)(R8*1), R9
8606 MOVQ R10, (AX)
8607 MOVQ R9, -8(AX)(R8*1)
8608 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm12B
8609
8610emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_17through32:
8611 MOVOU (R9), X0
8612 MOVOU -16(R9)(R8*1), X1
8613 MOVOU X0, (AX)
8614 MOVOU X1, -16(AX)(R8*1)
8615 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm12B
8616
8617emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm12B_memmove_move_33through64:
8618 MOVOU (R9), X0
8619 MOVOU 16(R9), X1
8620 MOVOU -32(R9)(R8*1), X2
8621 MOVOU -16(R9)(R8*1), X3
8622 MOVOU X0, (AX)
8623 MOVOU X1, 16(AX)
8624 MOVOU X2, -32(AX)(R8*1)
8625 MOVOU X3, -16(AX)(R8*1)
8626
8627memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm12B:
8628 MOVQ BX, AX
8629 JMP emit_literal_done_match_emit_repeat_encodeBetterBlockAsm12B
8630
8631memmove_long_match_emit_repeat_encodeBetterBlockAsm12B:
8632 LEAQ (AX)(R8*1), BX
8633
8634 // genMemMoveLong
8635 MOVOU (R9), X0
8636 MOVOU 16(R9), X1
8637 MOVOU -32(R9)(R8*1), X2
8638 MOVOU -16(R9)(R8*1), X3
8639 MOVQ R8, R12
8640 SHRQ $0x05, R12
8641 MOVQ AX, R10
8642 ANDL $0x0000001f, R10
8643 MOVQ $0x00000040, R13
8644 SUBQ R10, R13
8645 DECQ R12
8646 JA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm12Blarge_forward_sse_loop_32
8647 LEAQ -32(R9)(R13*1), R10
8648 LEAQ -32(AX)(R13*1), R14
8649
8650emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm12Blarge_big_loop_back:
8651 MOVOU (R10), X4
8652 MOVOU 16(R10), X5
8653 MOVOA X4, (R14)
8654 MOVOA X5, 16(R14)
8655 ADDQ $0x20, R14
8656 ADDQ $0x20, R10
8657 ADDQ $0x20, R13
8658 DECQ R12
8659 JNA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm12Blarge_big_loop_back
8660
8661emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm12Blarge_forward_sse_loop_32:
8662 MOVOU -32(R9)(R13*1), X4
8663 MOVOU -16(R9)(R13*1), X5
8664 MOVOA X4, -32(AX)(R13*1)
8665 MOVOA X5, -16(AX)(R13*1)
8666 ADDQ $0x20, R13
8667 CMPQ R8, R13
8668 JAE emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm12Blarge_forward_sse_loop_32
8669 MOVOU X0, (AX)
8670 MOVOU X1, 16(AX)
8671 MOVOU X2, -32(AX)(R8*1)
8672 MOVOU X3, -16(AX)(R8*1)
8673 MOVQ BX, AX
8674
8675emit_literal_done_match_emit_repeat_encodeBetterBlockAsm12B:
8676 ADDL R11, CX
8677 ADDL $0x04, R11
8678 MOVL CX, 12(SP)
8679
8680 // emitRepeat
8681 MOVL R11, BX
8682 LEAL -4(R11), R11
8683 CMPL BX, $0x08
8684 JBE repeat_two_match_nolit_repeat_encodeBetterBlockAsm12B
8685 CMPL BX, $0x0c
8686 JAE cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm12B
8687 CMPL DI, $0x00000800
8688 JB repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm12B
8689
8690cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm12B:
8691 CMPL R11, $0x00000104
8692 JB repeat_three_match_nolit_repeat_encodeBetterBlockAsm12B
8693 LEAL -256(R11), R11
8694 MOVW $0x0019, (AX)
8695 MOVW R11, 2(AX)
8696 ADDQ $0x04, AX
8697 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8698
8699repeat_three_match_nolit_repeat_encodeBetterBlockAsm12B:
8700 LEAL -4(R11), R11
8701 MOVW $0x0015, (AX)
8702 MOVB R11, 2(AX)
8703 ADDQ $0x03, AX
8704 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8705
8706repeat_two_match_nolit_repeat_encodeBetterBlockAsm12B:
8707 SHLL $0x02, R11
8708 ORL $0x01, R11
8709 MOVW R11, (AX)
8710 ADDQ $0x02, AX
8711 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm12B
8712
8713repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm12B:
8714 XORQ BX, BX
8715 LEAL 1(BX)(R11*4), R11
8716 MOVB DI, 1(AX)
8717 SARL $0x08, DI
8718 SHLL $0x05, DI
8719 ORL DI, R11
8720 MOVB R11, (AX)
8721 ADDQ $0x02, AX
8722
8723match_nolit_emitcopy_end_encodeBetterBlockAsm12B:
8724 CMPL CX, 8(SP)
8725 JAE emit_remainder_encodeBetterBlockAsm12B
8726 CMPQ AX, (SP)
8727 JB match_nolit_dst_ok_encodeBetterBlockAsm12B
8728 MOVQ $0x00000000, ret+48(FP)
8729 RET
8730
8731match_nolit_dst_ok_encodeBetterBlockAsm12B:
8732 MOVQ $0x0000cf1bbcdcbf9b, BX
8733 MOVQ $0x9e3779b1, DI
8734 LEAQ 1(SI), SI
8735 LEAQ -2(CX), R8
8736 MOVQ (DX)(SI*1), R9
8737 MOVQ 1(DX)(SI*1), R10
8738 MOVQ (DX)(R8*1), R11
8739 MOVQ 1(DX)(R8*1), R12
8740 SHLQ $0x10, R9
8741 IMULQ BX, R9
8742 SHRQ $0x32, R9
8743 SHLQ $0x20, R10
8744 IMULQ DI, R10
8745 SHRQ $0x34, R10
8746 SHLQ $0x10, R11
8747 IMULQ BX, R11
8748 SHRQ $0x32, R11
8749 SHLQ $0x20, R12
8750 IMULQ DI, R12
8751 SHRQ $0x34, R12
8752 LEAQ 1(SI), DI
8753 LEAQ 1(R8), R13
8754 MOVL SI, 24(SP)(R9*4)
8755 MOVL R8, 24(SP)(R11*4)
8756 MOVL DI, 65560(SP)(R10*4)
8757 MOVL R13, 65560(SP)(R12*4)
8758 LEAQ 1(R8)(SI*1), DI
8759 SHRQ $0x01, DI
8760 ADDQ $0x01, SI
8761 SUBQ $0x01, R8
8762
8763index_loop_encodeBetterBlockAsm12B:
8764 CMPQ DI, R8
8765 JAE search_loop_encodeBetterBlockAsm12B
8766 MOVQ (DX)(SI*1), R9
8767 MOVQ (DX)(DI*1), R10
8768 SHLQ $0x10, R9
8769 IMULQ BX, R9
8770 SHRQ $0x32, R9
8771 SHLQ $0x10, R10
8772 IMULQ BX, R10
8773 SHRQ $0x32, R10
8774 MOVL SI, 24(SP)(R9*4)
8775 MOVL DI, 24(SP)(R10*4)
8776 ADDQ $0x02, SI
8777 ADDQ $0x02, DI
8778 JMP index_loop_encodeBetterBlockAsm12B
8779
8780emit_remainder_encodeBetterBlockAsm12B:
8781 MOVQ src_len+32(FP), CX
8782 SUBL 12(SP), CX
8783 LEAQ 3(AX)(CX*1), CX
8784 CMPQ CX, (SP)
8785 JB emit_remainder_ok_encodeBetterBlockAsm12B
8786 MOVQ $0x00000000, ret+48(FP)
8787 RET
8788
8789emit_remainder_ok_encodeBetterBlockAsm12B:
8790 MOVQ src_len+32(FP), CX
8791 MOVL 12(SP), BX
8792 CMPL BX, CX
8793 JEQ emit_literal_done_emit_remainder_encodeBetterBlockAsm12B
8794 MOVL CX, SI
8795 MOVL CX, 12(SP)
8796 LEAQ (DX)(BX*1), CX
8797 SUBL BX, SI
8798 LEAL -1(SI), DX
8799 CMPL DX, $0x3c
8800 JB one_byte_emit_remainder_encodeBetterBlockAsm12B
8801 CMPL DX, $0x00000100
8802 JB two_bytes_emit_remainder_encodeBetterBlockAsm12B
8803 JB three_bytes_emit_remainder_encodeBetterBlockAsm12B
8804
8805three_bytes_emit_remainder_encodeBetterBlockAsm12B:
8806 MOVB $0xf4, (AX)
8807 MOVW DX, 1(AX)
8808 ADDQ $0x03, AX
8809 JMP memmove_long_emit_remainder_encodeBetterBlockAsm12B
8810
8811two_bytes_emit_remainder_encodeBetterBlockAsm12B:
8812 MOVB $0xf0, (AX)
8813 MOVB DL, 1(AX)
8814 ADDQ $0x02, AX
8815 CMPL DX, $0x40
8816 JB memmove_emit_remainder_encodeBetterBlockAsm12B
8817 JMP memmove_long_emit_remainder_encodeBetterBlockAsm12B
8818
8819one_byte_emit_remainder_encodeBetterBlockAsm12B:
8820 SHLB $0x02, DL
8821 MOVB DL, (AX)
8822 ADDQ $0x01, AX
8823
8824memmove_emit_remainder_encodeBetterBlockAsm12B:
8825 LEAQ (AX)(SI*1), DX
8826 MOVL SI, BX
8827
8828 // genMemMoveShort
8829 CMPQ BX, $0x03
8830 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_1or2
8831 JE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_3
8832 CMPQ BX, $0x08
8833 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_4through7
8834 CMPQ BX, $0x10
8835 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_8through16
8836 CMPQ BX, $0x20
8837 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_17through32
8838 JMP emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_33through64
8839
8840emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_1or2:
8841 MOVB (CX), SI
8842 MOVB -1(CX)(BX*1), CL
8843 MOVB SI, (AX)
8844 MOVB CL, -1(AX)(BX*1)
8845 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm12B
8846
8847emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_3:
8848 MOVW (CX), SI
8849 MOVB 2(CX), CL
8850 MOVW SI, (AX)
8851 MOVB CL, 2(AX)
8852 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm12B
8853
8854emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_4through7:
8855 MOVL (CX), SI
8856 MOVL -4(CX)(BX*1), CX
8857 MOVL SI, (AX)
8858 MOVL CX, -4(AX)(BX*1)
8859 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm12B
8860
8861emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_8through16:
8862 MOVQ (CX), SI
8863 MOVQ -8(CX)(BX*1), CX
8864 MOVQ SI, (AX)
8865 MOVQ CX, -8(AX)(BX*1)
8866 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm12B
8867
8868emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_17through32:
8869 MOVOU (CX), X0
8870 MOVOU -16(CX)(BX*1), X1
8871 MOVOU X0, (AX)
8872 MOVOU X1, -16(AX)(BX*1)
8873 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm12B
8874
8875emit_lit_memmove_emit_remainder_encodeBetterBlockAsm12B_memmove_move_33through64:
8876 MOVOU (CX), X0
8877 MOVOU 16(CX), X1
8878 MOVOU -32(CX)(BX*1), X2
8879 MOVOU -16(CX)(BX*1), X3
8880 MOVOU X0, (AX)
8881 MOVOU X1, 16(AX)
8882 MOVOU X2, -32(AX)(BX*1)
8883 MOVOU X3, -16(AX)(BX*1)
8884
8885memmove_end_copy_emit_remainder_encodeBetterBlockAsm12B:
8886 MOVQ DX, AX
8887 JMP emit_literal_done_emit_remainder_encodeBetterBlockAsm12B
8888
8889memmove_long_emit_remainder_encodeBetterBlockAsm12B:
8890 LEAQ (AX)(SI*1), DX
8891 MOVL SI, BX
8892
8893 // genMemMoveLong
8894 MOVOU (CX), X0
8895 MOVOU 16(CX), X1
8896 MOVOU -32(CX)(BX*1), X2
8897 MOVOU -16(CX)(BX*1), X3
8898 MOVQ BX, DI
8899 SHRQ $0x05, DI
8900 MOVQ AX, SI
8901 ANDL $0x0000001f, SI
8902 MOVQ $0x00000040, R8
8903 SUBQ SI, R8
8904 DECQ DI
8905 JA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm12Blarge_forward_sse_loop_32
8906 LEAQ -32(CX)(R8*1), SI
8907 LEAQ -32(AX)(R8*1), R9
8908
8909emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm12Blarge_big_loop_back:
8910 MOVOU (SI), X4
8911 MOVOU 16(SI), X5
8912 MOVOA X4, (R9)
8913 MOVOA X5, 16(R9)
8914 ADDQ $0x20, R9
8915 ADDQ $0x20, SI
8916 ADDQ $0x20, R8
8917 DECQ DI
8918 JNA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm12Blarge_big_loop_back
8919
8920emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm12Blarge_forward_sse_loop_32:
8921 MOVOU -32(CX)(R8*1), X4
8922 MOVOU -16(CX)(R8*1), X5
8923 MOVOA X4, -32(AX)(R8*1)
8924 MOVOA X5, -16(AX)(R8*1)
8925 ADDQ $0x20, R8
8926 CMPQ BX, R8
8927 JAE emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm12Blarge_forward_sse_loop_32
8928 MOVOU X0, (AX)
8929 MOVOU X1, 16(AX)
8930 MOVOU X2, -32(AX)(BX*1)
8931 MOVOU X3, -16(AX)(BX*1)
8932 MOVQ DX, AX
8933
8934emit_literal_done_emit_remainder_encodeBetterBlockAsm12B:
8935 MOVQ dst_base+0(FP), CX
8936 SUBQ CX, AX
8937 MOVQ AX, ret+48(FP)
8938 RET
8939
8940// func encodeBetterBlockAsm10B(dst []byte, src []byte) int
8941// Requires: BMI, SSE2
8942TEXT ·encodeBetterBlockAsm10B(SB), $20504-56
8943 MOVQ dst_base+0(FP), AX
8944 MOVQ $0x000000a0, CX
8945 LEAQ 24(SP), DX
8946 PXOR X0, X0
8947
8948zero_loop_encodeBetterBlockAsm10B:
8949 MOVOU X0, (DX)
8950 MOVOU X0, 16(DX)
8951 MOVOU X0, 32(DX)
8952 MOVOU X0, 48(DX)
8953 MOVOU X0, 64(DX)
8954 MOVOU X0, 80(DX)
8955 MOVOU X0, 96(DX)
8956 MOVOU X0, 112(DX)
8957 ADDQ $0x80, DX
8958 DECQ CX
8959 JNZ zero_loop_encodeBetterBlockAsm10B
8960 MOVL $0x00000000, 12(SP)
8961 MOVQ src_len+32(FP), CX
8962 LEAQ -6(CX), DX
8963 LEAQ -8(CX), BX
8964 MOVL BX, 8(SP)
8965 SHRQ $0x05, CX
8966 SUBL CX, DX
8967 LEAQ (AX)(DX*1), DX
8968 MOVQ DX, (SP)
8969 MOVL $0x00000001, CX
8970 MOVL $0x00000000, 16(SP)
8971 MOVQ src_base+24(FP), DX
8972
8973search_loop_encodeBetterBlockAsm10B:
8974 MOVL CX, BX
8975 SUBL 12(SP), BX
8976 SHRL $0x05, BX
8977 LEAL 1(CX)(BX*1), BX
8978 CMPL BX, 8(SP)
8979 JAE emit_remainder_encodeBetterBlockAsm10B
8980 MOVQ (DX)(CX*1), SI
8981 MOVL BX, 20(SP)
8982 MOVQ $0x0000cf1bbcdcbf9b, R8
8983 MOVQ $0x9e3779b1, BX
8984 MOVQ SI, R9
8985 MOVQ SI, R10
8986 SHLQ $0x10, R9
8987 IMULQ R8, R9
8988 SHRQ $0x34, R9
8989 SHLQ $0x20, R10
8990 IMULQ BX, R10
8991 SHRQ $0x36, R10
8992 MOVL 24(SP)(R9*4), BX
8993 MOVL 16408(SP)(R10*4), DI
8994 MOVL CX, 24(SP)(R9*4)
8995 MOVL CX, 16408(SP)(R10*4)
8996 MOVQ (DX)(BX*1), R9
8997 MOVQ (DX)(DI*1), R10
8998 CMPQ R9, SI
8999 JEQ candidate_match_encodeBetterBlockAsm10B
9000 CMPQ R10, SI
9001 JNE no_short_found_encodeBetterBlockAsm10B
9002 MOVL DI, BX
9003 JMP candidate_match_encodeBetterBlockAsm10B
9004
9005no_short_found_encodeBetterBlockAsm10B:
9006 CMPL R9, SI
9007 JEQ candidate_match_encodeBetterBlockAsm10B
9008 CMPL R10, SI
9009 JEQ candidateS_match_encodeBetterBlockAsm10B
9010 MOVL 20(SP), CX
9011 JMP search_loop_encodeBetterBlockAsm10B
9012
9013candidateS_match_encodeBetterBlockAsm10B:
9014 SHRQ $0x08, SI
9015 MOVQ SI, R9
9016 SHLQ $0x10, R9
9017 IMULQ R8, R9
9018 SHRQ $0x34, R9
9019 MOVL 24(SP)(R9*4), BX
9020 INCL CX
9021 MOVL CX, 24(SP)(R9*4)
9022 CMPL (DX)(BX*1), SI
9023 JEQ candidate_match_encodeBetterBlockAsm10B
9024 DECL CX
9025 MOVL DI, BX
9026
9027candidate_match_encodeBetterBlockAsm10B:
9028 MOVL 12(SP), SI
9029 TESTL BX, BX
9030 JZ match_extend_back_end_encodeBetterBlockAsm10B
9031
9032match_extend_back_loop_encodeBetterBlockAsm10B:
9033 CMPL CX, SI
9034 JBE match_extend_back_end_encodeBetterBlockAsm10B
9035 MOVB -1(DX)(BX*1), DI
9036 MOVB -1(DX)(CX*1), R8
9037 CMPB DI, R8
9038 JNE match_extend_back_end_encodeBetterBlockAsm10B
9039 LEAL -1(CX), CX
9040 DECL BX
9041 JZ match_extend_back_end_encodeBetterBlockAsm10B
9042 JMP match_extend_back_loop_encodeBetterBlockAsm10B
9043
9044match_extend_back_end_encodeBetterBlockAsm10B:
9045 MOVL CX, SI
9046 SUBL 12(SP), SI
9047 LEAQ 3(AX)(SI*1), SI
9048 CMPQ SI, (SP)
9049 JB match_dst_size_check_encodeBetterBlockAsm10B
9050 MOVQ $0x00000000, ret+48(FP)
9051 RET
9052
9053match_dst_size_check_encodeBetterBlockAsm10B:
9054 MOVL CX, SI
9055 ADDL $0x04, CX
9056 ADDL $0x04, BX
9057 MOVQ src_len+32(FP), DI
9058 SUBL CX, DI
9059 LEAQ (DX)(CX*1), R8
9060 LEAQ (DX)(BX*1), R9
9061
9062 // matchLen
9063 XORL R11, R11
9064
9065matchlen_loopback_16_match_nolit_encodeBetterBlockAsm10B:
9066 CMPL DI, $0x10
9067 JB matchlen_match8_match_nolit_encodeBetterBlockAsm10B
9068 MOVQ (R8)(R11*1), R10
9069 MOVQ 8(R8)(R11*1), R12
9070 XORQ (R9)(R11*1), R10
9071 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm10B
9072 XORQ 8(R9)(R11*1), R12
9073 JNZ matchlen_bsf_16match_nolit_encodeBetterBlockAsm10B
9074 LEAL -16(DI), DI
9075 LEAL 16(R11), R11
9076 JMP matchlen_loopback_16_match_nolit_encodeBetterBlockAsm10B
9077
9078matchlen_bsf_16match_nolit_encodeBetterBlockAsm10B:
9079#ifdef GOAMD64_v3
9080 TZCNTQ R12, R12
9081
9082#else
9083 BSFQ R12, R12
9084
9085#endif
9086 SARQ $0x03, R12
9087 LEAL 8(R11)(R12*1), R11
9088 JMP match_nolit_end_encodeBetterBlockAsm10B
9089
9090matchlen_match8_match_nolit_encodeBetterBlockAsm10B:
9091 CMPL DI, $0x08
9092 JB matchlen_match4_match_nolit_encodeBetterBlockAsm10B
9093 MOVQ (R8)(R11*1), R10
9094 XORQ (R9)(R11*1), R10
9095 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm10B
9096 LEAL -8(DI), DI
9097 LEAL 8(R11), R11
9098 JMP matchlen_match4_match_nolit_encodeBetterBlockAsm10B
9099
9100matchlen_bsf_8_match_nolit_encodeBetterBlockAsm10B:
9101#ifdef GOAMD64_v3
9102 TZCNTQ R10, R10
9103
9104#else
9105 BSFQ R10, R10
9106
9107#endif
9108 SARQ $0x03, R10
9109 LEAL (R11)(R10*1), R11
9110 JMP match_nolit_end_encodeBetterBlockAsm10B
9111
9112matchlen_match4_match_nolit_encodeBetterBlockAsm10B:
9113 CMPL DI, $0x04
9114 JB matchlen_match2_match_nolit_encodeBetterBlockAsm10B
9115 MOVL (R8)(R11*1), R10
9116 CMPL (R9)(R11*1), R10
9117 JNE matchlen_match2_match_nolit_encodeBetterBlockAsm10B
9118 LEAL -4(DI), DI
9119 LEAL 4(R11), R11
9120
9121matchlen_match2_match_nolit_encodeBetterBlockAsm10B:
9122 CMPL DI, $0x01
9123 JE matchlen_match1_match_nolit_encodeBetterBlockAsm10B
9124 JB match_nolit_end_encodeBetterBlockAsm10B
9125 MOVW (R8)(R11*1), R10
9126 CMPW (R9)(R11*1), R10
9127 JNE matchlen_match1_match_nolit_encodeBetterBlockAsm10B
9128 LEAL 2(R11), R11
9129 SUBL $0x02, DI
9130 JZ match_nolit_end_encodeBetterBlockAsm10B
9131
9132matchlen_match1_match_nolit_encodeBetterBlockAsm10B:
9133 MOVB (R8)(R11*1), R10
9134 CMPB (R9)(R11*1), R10
9135 JNE match_nolit_end_encodeBetterBlockAsm10B
9136 LEAL 1(R11), R11
9137
9138match_nolit_end_encodeBetterBlockAsm10B:
9139 MOVL CX, DI
9140 SUBL BX, DI
9141
9142 // Check if repeat
9143 CMPL 16(SP), DI
9144 JEQ match_is_repeat_encodeBetterBlockAsm10B
9145 MOVL DI, 16(SP)
9146 MOVL 12(SP), BX
9147 CMPL BX, SI
9148 JEQ emit_literal_done_match_emit_encodeBetterBlockAsm10B
9149 MOVL SI, R8
9150 MOVL SI, 12(SP)
9151 LEAQ (DX)(BX*1), R9
9152 SUBL BX, R8
9153 LEAL -1(R8), BX
9154 CMPL BX, $0x3c
9155 JB one_byte_match_emit_encodeBetterBlockAsm10B
9156 CMPL BX, $0x00000100
9157 JB two_bytes_match_emit_encodeBetterBlockAsm10B
9158 JB three_bytes_match_emit_encodeBetterBlockAsm10B
9159
9160three_bytes_match_emit_encodeBetterBlockAsm10B:
9161 MOVB $0xf4, (AX)
9162 MOVW BX, 1(AX)
9163 ADDQ $0x03, AX
9164 JMP memmove_long_match_emit_encodeBetterBlockAsm10B
9165
9166two_bytes_match_emit_encodeBetterBlockAsm10B:
9167 MOVB $0xf0, (AX)
9168 MOVB BL, 1(AX)
9169 ADDQ $0x02, AX
9170 CMPL BX, $0x40
9171 JB memmove_match_emit_encodeBetterBlockAsm10B
9172 JMP memmove_long_match_emit_encodeBetterBlockAsm10B
9173
9174one_byte_match_emit_encodeBetterBlockAsm10B:
9175 SHLB $0x02, BL
9176 MOVB BL, (AX)
9177 ADDQ $0x01, AX
9178
9179memmove_match_emit_encodeBetterBlockAsm10B:
9180 LEAQ (AX)(R8*1), BX
9181
9182 // genMemMoveShort
9183 CMPQ R8, $0x04
9184 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_4
9185 CMPQ R8, $0x08
9186 JB emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_4through7
9187 CMPQ R8, $0x10
9188 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_8through16
9189 CMPQ R8, $0x20
9190 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_17through32
9191 JMP emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_33through64
9192
9193emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_4:
9194 MOVL (R9), R10
9195 MOVL R10, (AX)
9196 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm10B
9197
9198emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_4through7:
9199 MOVL (R9), R10
9200 MOVL -4(R9)(R8*1), R9
9201 MOVL R10, (AX)
9202 MOVL R9, -4(AX)(R8*1)
9203 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm10B
9204
9205emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_8through16:
9206 MOVQ (R9), R10
9207 MOVQ -8(R9)(R8*1), R9
9208 MOVQ R10, (AX)
9209 MOVQ R9, -8(AX)(R8*1)
9210 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm10B
9211
9212emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_17through32:
9213 MOVOU (R9), X0
9214 MOVOU -16(R9)(R8*1), X1
9215 MOVOU X0, (AX)
9216 MOVOU X1, -16(AX)(R8*1)
9217 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm10B
9218
9219emit_lit_memmove_match_emit_encodeBetterBlockAsm10B_memmove_move_33through64:
9220 MOVOU (R9), X0
9221 MOVOU 16(R9), X1
9222 MOVOU -32(R9)(R8*1), X2
9223 MOVOU -16(R9)(R8*1), X3
9224 MOVOU X0, (AX)
9225 MOVOU X1, 16(AX)
9226 MOVOU X2, -32(AX)(R8*1)
9227 MOVOU X3, -16(AX)(R8*1)
9228
9229memmove_end_copy_match_emit_encodeBetterBlockAsm10B:
9230 MOVQ BX, AX
9231 JMP emit_literal_done_match_emit_encodeBetterBlockAsm10B
9232
9233memmove_long_match_emit_encodeBetterBlockAsm10B:
9234 LEAQ (AX)(R8*1), BX
9235
9236 // genMemMoveLong
9237 MOVOU (R9), X0
9238 MOVOU 16(R9), X1
9239 MOVOU -32(R9)(R8*1), X2
9240 MOVOU -16(R9)(R8*1), X3
9241 MOVQ R8, R12
9242 SHRQ $0x05, R12
9243 MOVQ AX, R10
9244 ANDL $0x0000001f, R10
9245 MOVQ $0x00000040, R13
9246 SUBQ R10, R13
9247 DECQ R12
9248 JA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm10Blarge_forward_sse_loop_32
9249 LEAQ -32(R9)(R13*1), R10
9250 LEAQ -32(AX)(R13*1), R14
9251
9252emit_lit_memmove_long_match_emit_encodeBetterBlockAsm10Blarge_big_loop_back:
9253 MOVOU (R10), X4
9254 MOVOU 16(R10), X5
9255 MOVOA X4, (R14)
9256 MOVOA X5, 16(R14)
9257 ADDQ $0x20, R14
9258 ADDQ $0x20, R10
9259 ADDQ $0x20, R13
9260 DECQ R12
9261 JNA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm10Blarge_big_loop_back
9262
9263emit_lit_memmove_long_match_emit_encodeBetterBlockAsm10Blarge_forward_sse_loop_32:
9264 MOVOU -32(R9)(R13*1), X4
9265 MOVOU -16(R9)(R13*1), X5
9266 MOVOA X4, -32(AX)(R13*1)
9267 MOVOA X5, -16(AX)(R13*1)
9268 ADDQ $0x20, R13
9269 CMPQ R8, R13
9270 JAE emit_lit_memmove_long_match_emit_encodeBetterBlockAsm10Blarge_forward_sse_loop_32
9271 MOVOU X0, (AX)
9272 MOVOU X1, 16(AX)
9273 MOVOU X2, -32(AX)(R8*1)
9274 MOVOU X3, -16(AX)(R8*1)
9275 MOVQ BX, AX
9276
9277emit_literal_done_match_emit_encodeBetterBlockAsm10B:
9278 ADDL R11, CX
9279 ADDL $0x04, R11
9280 MOVL CX, 12(SP)
9281
9282 // emitCopy
9283 CMPL R11, $0x40
9284 JBE two_byte_offset_short_match_nolit_encodeBetterBlockAsm10B
9285 CMPL DI, $0x00000800
9286 JAE long_offset_short_match_nolit_encodeBetterBlockAsm10B
9287 MOVL $0x00000001, BX
9288 LEAL 16(BX), BX
9289 MOVB DI, 1(AX)
9290 SHRL $0x08, DI
9291 SHLL $0x05, DI
9292 ORL DI, BX
9293 MOVB BL, (AX)
9294 ADDQ $0x02, AX
9295 SUBL $0x08, R11
9296
9297 // emitRepeat
9298 LEAL -4(R11), R11
9299 JMP cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b
9300 MOVL R11, BX
9301 LEAL -4(R11), R11
9302 CMPL BX, $0x08
9303 JBE repeat_two_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b
9304 CMPL BX, $0x0c
9305 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b
9306 CMPL DI, $0x00000800
9307 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b
9308
9309cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b:
9310 CMPL R11, $0x00000104
9311 JB repeat_three_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b
9312 LEAL -256(R11), R11
9313 MOVW $0x0019, (AX)
9314 MOVW R11, 2(AX)
9315 ADDQ $0x04, AX
9316 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9317
9318repeat_three_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b:
9319 LEAL -4(R11), R11
9320 MOVW $0x0015, (AX)
9321 MOVB R11, 2(AX)
9322 ADDQ $0x03, AX
9323 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9324
9325repeat_two_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b:
9326 SHLL $0x02, R11
9327 ORL $0x01, R11
9328 MOVW R11, (AX)
9329 ADDQ $0x02, AX
9330 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9331
9332repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short_2b:
9333 XORQ BX, BX
9334 LEAL 1(BX)(R11*4), R11
9335 MOVB DI, 1(AX)
9336 SARL $0x08, DI
9337 SHLL $0x05, DI
9338 ORL DI, R11
9339 MOVB R11, (AX)
9340 ADDQ $0x02, AX
9341 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9342
9343long_offset_short_match_nolit_encodeBetterBlockAsm10B:
9344 MOVB $0xee, (AX)
9345 MOVW DI, 1(AX)
9346 LEAL -60(R11), R11
9347 ADDQ $0x03, AX
9348
9349 // emitRepeat
9350 MOVL R11, BX
9351 LEAL -4(R11), R11
9352 CMPL BX, $0x08
9353 JBE repeat_two_match_nolit_encodeBetterBlockAsm10B_emit_copy_short
9354 CMPL BX, $0x0c
9355 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short
9356 CMPL DI, $0x00000800
9357 JB repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short
9358
9359cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short:
9360 CMPL R11, $0x00000104
9361 JB repeat_three_match_nolit_encodeBetterBlockAsm10B_emit_copy_short
9362 LEAL -256(R11), R11
9363 MOVW $0x0019, (AX)
9364 MOVW R11, 2(AX)
9365 ADDQ $0x04, AX
9366 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9367
9368repeat_three_match_nolit_encodeBetterBlockAsm10B_emit_copy_short:
9369 LEAL -4(R11), R11
9370 MOVW $0x0015, (AX)
9371 MOVB R11, 2(AX)
9372 ADDQ $0x03, AX
9373 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9374
9375repeat_two_match_nolit_encodeBetterBlockAsm10B_emit_copy_short:
9376 SHLL $0x02, R11
9377 ORL $0x01, R11
9378 MOVW R11, (AX)
9379 ADDQ $0x02, AX
9380 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9381
9382repeat_two_offset_match_nolit_encodeBetterBlockAsm10B_emit_copy_short:
9383 XORQ BX, BX
9384 LEAL 1(BX)(R11*4), R11
9385 MOVB DI, 1(AX)
9386 SARL $0x08, DI
9387 SHLL $0x05, DI
9388 ORL DI, R11
9389 MOVB R11, (AX)
9390 ADDQ $0x02, AX
9391 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9392
9393two_byte_offset_short_match_nolit_encodeBetterBlockAsm10B:
9394 MOVL R11, BX
9395 SHLL $0x02, BX
9396 CMPL R11, $0x0c
9397 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm10B
9398 CMPL DI, $0x00000800
9399 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm10B
9400 LEAL -15(BX), BX
9401 MOVB DI, 1(AX)
9402 SHRL $0x08, DI
9403 SHLL $0x05, DI
9404 ORL DI, BX
9405 MOVB BL, (AX)
9406 ADDQ $0x02, AX
9407 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9408
9409emit_copy_three_match_nolit_encodeBetterBlockAsm10B:
9410 LEAL -2(BX), BX
9411 MOVB BL, (AX)
9412 MOVW DI, 1(AX)
9413 ADDQ $0x03, AX
9414 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9415
9416match_is_repeat_encodeBetterBlockAsm10B:
9417 MOVL 12(SP), BX
9418 CMPL BX, SI
9419 JEQ emit_literal_done_match_emit_repeat_encodeBetterBlockAsm10B
9420 MOVL SI, R8
9421 MOVL SI, 12(SP)
9422 LEAQ (DX)(BX*1), R9
9423 SUBL BX, R8
9424 LEAL -1(R8), BX
9425 CMPL BX, $0x3c
9426 JB one_byte_match_emit_repeat_encodeBetterBlockAsm10B
9427 CMPL BX, $0x00000100
9428 JB two_bytes_match_emit_repeat_encodeBetterBlockAsm10B
9429 JB three_bytes_match_emit_repeat_encodeBetterBlockAsm10B
9430
9431three_bytes_match_emit_repeat_encodeBetterBlockAsm10B:
9432 MOVB $0xf4, (AX)
9433 MOVW BX, 1(AX)
9434 ADDQ $0x03, AX
9435 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm10B
9436
9437two_bytes_match_emit_repeat_encodeBetterBlockAsm10B:
9438 MOVB $0xf0, (AX)
9439 MOVB BL, 1(AX)
9440 ADDQ $0x02, AX
9441 CMPL BX, $0x40
9442 JB memmove_match_emit_repeat_encodeBetterBlockAsm10B
9443 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm10B
9444
9445one_byte_match_emit_repeat_encodeBetterBlockAsm10B:
9446 SHLB $0x02, BL
9447 MOVB BL, (AX)
9448 ADDQ $0x01, AX
9449
9450memmove_match_emit_repeat_encodeBetterBlockAsm10B:
9451 LEAQ (AX)(R8*1), BX
9452
9453 // genMemMoveShort
9454 CMPQ R8, $0x04
9455 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_4
9456 CMPQ R8, $0x08
9457 JB emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_4through7
9458 CMPQ R8, $0x10
9459 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_8through16
9460 CMPQ R8, $0x20
9461 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_17through32
9462 JMP emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_33through64
9463
9464emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_4:
9465 MOVL (R9), R10
9466 MOVL R10, (AX)
9467 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm10B
9468
9469emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_4through7:
9470 MOVL (R9), R10
9471 MOVL -4(R9)(R8*1), R9
9472 MOVL R10, (AX)
9473 MOVL R9, -4(AX)(R8*1)
9474 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm10B
9475
9476emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_8through16:
9477 MOVQ (R9), R10
9478 MOVQ -8(R9)(R8*1), R9
9479 MOVQ R10, (AX)
9480 MOVQ R9, -8(AX)(R8*1)
9481 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm10B
9482
9483emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_17through32:
9484 MOVOU (R9), X0
9485 MOVOU -16(R9)(R8*1), X1
9486 MOVOU X0, (AX)
9487 MOVOU X1, -16(AX)(R8*1)
9488 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm10B
9489
9490emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm10B_memmove_move_33through64:
9491 MOVOU (R9), X0
9492 MOVOU 16(R9), X1
9493 MOVOU -32(R9)(R8*1), X2
9494 MOVOU -16(R9)(R8*1), X3
9495 MOVOU X0, (AX)
9496 MOVOU X1, 16(AX)
9497 MOVOU X2, -32(AX)(R8*1)
9498 MOVOU X3, -16(AX)(R8*1)
9499
9500memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm10B:
9501 MOVQ BX, AX
9502 JMP emit_literal_done_match_emit_repeat_encodeBetterBlockAsm10B
9503
9504memmove_long_match_emit_repeat_encodeBetterBlockAsm10B:
9505 LEAQ (AX)(R8*1), BX
9506
9507 // genMemMoveLong
9508 MOVOU (R9), X0
9509 MOVOU 16(R9), X1
9510 MOVOU -32(R9)(R8*1), X2
9511 MOVOU -16(R9)(R8*1), X3
9512 MOVQ R8, R12
9513 SHRQ $0x05, R12
9514 MOVQ AX, R10
9515 ANDL $0x0000001f, R10
9516 MOVQ $0x00000040, R13
9517 SUBQ R10, R13
9518 DECQ R12
9519 JA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm10Blarge_forward_sse_loop_32
9520 LEAQ -32(R9)(R13*1), R10
9521 LEAQ -32(AX)(R13*1), R14
9522
9523emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm10Blarge_big_loop_back:
9524 MOVOU (R10), X4
9525 MOVOU 16(R10), X5
9526 MOVOA X4, (R14)
9527 MOVOA X5, 16(R14)
9528 ADDQ $0x20, R14
9529 ADDQ $0x20, R10
9530 ADDQ $0x20, R13
9531 DECQ R12
9532 JNA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm10Blarge_big_loop_back
9533
9534emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm10Blarge_forward_sse_loop_32:
9535 MOVOU -32(R9)(R13*1), X4
9536 MOVOU -16(R9)(R13*1), X5
9537 MOVOA X4, -32(AX)(R13*1)
9538 MOVOA X5, -16(AX)(R13*1)
9539 ADDQ $0x20, R13
9540 CMPQ R8, R13
9541 JAE emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm10Blarge_forward_sse_loop_32
9542 MOVOU X0, (AX)
9543 MOVOU X1, 16(AX)
9544 MOVOU X2, -32(AX)(R8*1)
9545 MOVOU X3, -16(AX)(R8*1)
9546 MOVQ BX, AX
9547
9548emit_literal_done_match_emit_repeat_encodeBetterBlockAsm10B:
9549 ADDL R11, CX
9550 ADDL $0x04, R11
9551 MOVL CX, 12(SP)
9552
9553 // emitRepeat
9554 MOVL R11, BX
9555 LEAL -4(R11), R11
9556 CMPL BX, $0x08
9557 JBE repeat_two_match_nolit_repeat_encodeBetterBlockAsm10B
9558 CMPL BX, $0x0c
9559 JAE cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm10B
9560 CMPL DI, $0x00000800
9561 JB repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm10B
9562
9563cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm10B:
9564 CMPL R11, $0x00000104
9565 JB repeat_three_match_nolit_repeat_encodeBetterBlockAsm10B
9566 LEAL -256(R11), R11
9567 MOVW $0x0019, (AX)
9568 MOVW R11, 2(AX)
9569 ADDQ $0x04, AX
9570 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9571
9572repeat_three_match_nolit_repeat_encodeBetterBlockAsm10B:
9573 LEAL -4(R11), R11
9574 MOVW $0x0015, (AX)
9575 MOVB R11, 2(AX)
9576 ADDQ $0x03, AX
9577 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9578
9579repeat_two_match_nolit_repeat_encodeBetterBlockAsm10B:
9580 SHLL $0x02, R11
9581 ORL $0x01, R11
9582 MOVW R11, (AX)
9583 ADDQ $0x02, AX
9584 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm10B
9585
9586repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm10B:
9587 XORQ BX, BX
9588 LEAL 1(BX)(R11*4), R11
9589 MOVB DI, 1(AX)
9590 SARL $0x08, DI
9591 SHLL $0x05, DI
9592 ORL DI, R11
9593 MOVB R11, (AX)
9594 ADDQ $0x02, AX
9595
9596match_nolit_emitcopy_end_encodeBetterBlockAsm10B:
9597 CMPL CX, 8(SP)
9598 JAE emit_remainder_encodeBetterBlockAsm10B
9599 CMPQ AX, (SP)
9600 JB match_nolit_dst_ok_encodeBetterBlockAsm10B
9601 MOVQ $0x00000000, ret+48(FP)
9602 RET
9603
9604match_nolit_dst_ok_encodeBetterBlockAsm10B:
9605 MOVQ $0x0000cf1bbcdcbf9b, BX
9606 MOVQ $0x9e3779b1, DI
9607 LEAQ 1(SI), SI
9608 LEAQ -2(CX), R8
9609 MOVQ (DX)(SI*1), R9
9610 MOVQ 1(DX)(SI*1), R10
9611 MOVQ (DX)(R8*1), R11
9612 MOVQ 1(DX)(R8*1), R12
9613 SHLQ $0x10, R9
9614 IMULQ BX, R9
9615 SHRQ $0x34, R9
9616 SHLQ $0x20, R10
9617 IMULQ DI, R10
9618 SHRQ $0x36, R10
9619 SHLQ $0x10, R11
9620 IMULQ BX, R11
9621 SHRQ $0x34, R11
9622 SHLQ $0x20, R12
9623 IMULQ DI, R12
9624 SHRQ $0x36, R12
9625 LEAQ 1(SI), DI
9626 LEAQ 1(R8), R13
9627 MOVL SI, 24(SP)(R9*4)
9628 MOVL R8, 24(SP)(R11*4)
9629 MOVL DI, 16408(SP)(R10*4)
9630 MOVL R13, 16408(SP)(R12*4)
9631 LEAQ 1(R8)(SI*1), DI
9632 SHRQ $0x01, DI
9633 ADDQ $0x01, SI
9634 SUBQ $0x01, R8
9635
9636index_loop_encodeBetterBlockAsm10B:
9637 CMPQ DI, R8
9638 JAE search_loop_encodeBetterBlockAsm10B
9639 MOVQ (DX)(SI*1), R9
9640 MOVQ (DX)(DI*1), R10
9641 SHLQ $0x10, R9
9642 IMULQ BX, R9
9643 SHRQ $0x34, R9
9644 SHLQ $0x10, R10
9645 IMULQ BX, R10
9646 SHRQ $0x34, R10
9647 MOVL SI, 24(SP)(R9*4)
9648 MOVL DI, 24(SP)(R10*4)
9649 ADDQ $0x02, SI
9650 ADDQ $0x02, DI
9651 JMP index_loop_encodeBetterBlockAsm10B
9652
9653emit_remainder_encodeBetterBlockAsm10B:
9654 MOVQ src_len+32(FP), CX
9655 SUBL 12(SP), CX
9656 LEAQ 3(AX)(CX*1), CX
9657 CMPQ CX, (SP)
9658 JB emit_remainder_ok_encodeBetterBlockAsm10B
9659 MOVQ $0x00000000, ret+48(FP)
9660 RET
9661
9662emit_remainder_ok_encodeBetterBlockAsm10B:
9663 MOVQ src_len+32(FP), CX
9664 MOVL 12(SP), BX
9665 CMPL BX, CX
9666 JEQ emit_literal_done_emit_remainder_encodeBetterBlockAsm10B
9667 MOVL CX, SI
9668 MOVL CX, 12(SP)
9669 LEAQ (DX)(BX*1), CX
9670 SUBL BX, SI
9671 LEAL -1(SI), DX
9672 CMPL DX, $0x3c
9673 JB one_byte_emit_remainder_encodeBetterBlockAsm10B
9674 CMPL DX, $0x00000100
9675 JB two_bytes_emit_remainder_encodeBetterBlockAsm10B
9676 JB three_bytes_emit_remainder_encodeBetterBlockAsm10B
9677
9678three_bytes_emit_remainder_encodeBetterBlockAsm10B:
9679 MOVB $0xf4, (AX)
9680 MOVW DX, 1(AX)
9681 ADDQ $0x03, AX
9682 JMP memmove_long_emit_remainder_encodeBetterBlockAsm10B
9683
9684two_bytes_emit_remainder_encodeBetterBlockAsm10B:
9685 MOVB $0xf0, (AX)
9686 MOVB DL, 1(AX)
9687 ADDQ $0x02, AX
9688 CMPL DX, $0x40
9689 JB memmove_emit_remainder_encodeBetterBlockAsm10B
9690 JMP memmove_long_emit_remainder_encodeBetterBlockAsm10B
9691
9692one_byte_emit_remainder_encodeBetterBlockAsm10B:
9693 SHLB $0x02, DL
9694 MOVB DL, (AX)
9695 ADDQ $0x01, AX
9696
9697memmove_emit_remainder_encodeBetterBlockAsm10B:
9698 LEAQ (AX)(SI*1), DX
9699 MOVL SI, BX
9700
9701 // genMemMoveShort
9702 CMPQ BX, $0x03
9703 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_1or2
9704 JE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_3
9705 CMPQ BX, $0x08
9706 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_4through7
9707 CMPQ BX, $0x10
9708 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_8through16
9709 CMPQ BX, $0x20
9710 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_17through32
9711 JMP emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_33through64
9712
9713emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_1or2:
9714 MOVB (CX), SI
9715 MOVB -1(CX)(BX*1), CL
9716 MOVB SI, (AX)
9717 MOVB CL, -1(AX)(BX*1)
9718 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm10B
9719
9720emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_3:
9721 MOVW (CX), SI
9722 MOVB 2(CX), CL
9723 MOVW SI, (AX)
9724 MOVB CL, 2(AX)
9725 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm10B
9726
9727emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_4through7:
9728 MOVL (CX), SI
9729 MOVL -4(CX)(BX*1), CX
9730 MOVL SI, (AX)
9731 MOVL CX, -4(AX)(BX*1)
9732 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm10B
9733
9734emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_8through16:
9735 MOVQ (CX), SI
9736 MOVQ -8(CX)(BX*1), CX
9737 MOVQ SI, (AX)
9738 MOVQ CX, -8(AX)(BX*1)
9739 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm10B
9740
9741emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_17through32:
9742 MOVOU (CX), X0
9743 MOVOU -16(CX)(BX*1), X1
9744 MOVOU X0, (AX)
9745 MOVOU X1, -16(AX)(BX*1)
9746 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm10B
9747
9748emit_lit_memmove_emit_remainder_encodeBetterBlockAsm10B_memmove_move_33through64:
9749 MOVOU (CX), X0
9750 MOVOU 16(CX), X1
9751 MOVOU -32(CX)(BX*1), X2
9752 MOVOU -16(CX)(BX*1), X3
9753 MOVOU X0, (AX)
9754 MOVOU X1, 16(AX)
9755 MOVOU X2, -32(AX)(BX*1)
9756 MOVOU X3, -16(AX)(BX*1)
9757
9758memmove_end_copy_emit_remainder_encodeBetterBlockAsm10B:
9759 MOVQ DX, AX
9760 JMP emit_literal_done_emit_remainder_encodeBetterBlockAsm10B
9761
9762memmove_long_emit_remainder_encodeBetterBlockAsm10B:
9763 LEAQ (AX)(SI*1), DX
9764 MOVL SI, BX
9765
9766 // genMemMoveLong
9767 MOVOU (CX), X0
9768 MOVOU 16(CX), X1
9769 MOVOU -32(CX)(BX*1), X2
9770 MOVOU -16(CX)(BX*1), X3
9771 MOVQ BX, DI
9772 SHRQ $0x05, DI
9773 MOVQ AX, SI
9774 ANDL $0x0000001f, SI
9775 MOVQ $0x00000040, R8
9776 SUBQ SI, R8
9777 DECQ DI
9778 JA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm10Blarge_forward_sse_loop_32
9779 LEAQ -32(CX)(R8*1), SI
9780 LEAQ -32(AX)(R8*1), R9
9781
9782emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm10Blarge_big_loop_back:
9783 MOVOU (SI), X4
9784 MOVOU 16(SI), X5
9785 MOVOA X4, (R9)
9786 MOVOA X5, 16(R9)
9787 ADDQ $0x20, R9
9788 ADDQ $0x20, SI
9789 ADDQ $0x20, R8
9790 DECQ DI
9791 JNA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm10Blarge_big_loop_back
9792
9793emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm10Blarge_forward_sse_loop_32:
9794 MOVOU -32(CX)(R8*1), X4
9795 MOVOU -16(CX)(R8*1), X5
9796 MOVOA X4, -32(AX)(R8*1)
9797 MOVOA X5, -16(AX)(R8*1)
9798 ADDQ $0x20, R8
9799 CMPQ BX, R8
9800 JAE emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm10Blarge_forward_sse_loop_32
9801 MOVOU X0, (AX)
9802 MOVOU X1, 16(AX)
9803 MOVOU X2, -32(AX)(BX*1)
9804 MOVOU X3, -16(AX)(BX*1)
9805 MOVQ DX, AX
9806
9807emit_literal_done_emit_remainder_encodeBetterBlockAsm10B:
9808 MOVQ dst_base+0(FP), CX
9809 SUBQ CX, AX
9810 MOVQ AX, ret+48(FP)
9811 RET
9812
9813// func encodeBetterBlockAsm8B(dst []byte, src []byte) int
9814// Requires: BMI, SSE2
9815TEXT ·encodeBetterBlockAsm8B(SB), $5144-56
9816 MOVQ dst_base+0(FP), AX
9817 MOVQ $0x00000028, CX
9818 LEAQ 24(SP), DX
9819 PXOR X0, X0
9820
9821zero_loop_encodeBetterBlockAsm8B:
9822 MOVOU X0, (DX)
9823 MOVOU X0, 16(DX)
9824 MOVOU X0, 32(DX)
9825 MOVOU X0, 48(DX)
9826 MOVOU X0, 64(DX)
9827 MOVOU X0, 80(DX)
9828 MOVOU X0, 96(DX)
9829 MOVOU X0, 112(DX)
9830 ADDQ $0x80, DX
9831 DECQ CX
9832 JNZ zero_loop_encodeBetterBlockAsm8B
9833 MOVL $0x00000000, 12(SP)
9834 MOVQ src_len+32(FP), CX
9835 LEAQ -6(CX), DX
9836 LEAQ -8(CX), BX
9837 MOVL BX, 8(SP)
9838 SHRQ $0x05, CX
9839 SUBL CX, DX
9840 LEAQ (AX)(DX*1), DX
9841 MOVQ DX, (SP)
9842 MOVL $0x00000001, CX
9843 MOVL $0x00000000, 16(SP)
9844 MOVQ src_base+24(FP), DX
9845
9846search_loop_encodeBetterBlockAsm8B:
9847 MOVL CX, BX
9848 SUBL 12(SP), BX
9849 SHRL $0x04, BX
9850 LEAL 1(CX)(BX*1), BX
9851 CMPL BX, 8(SP)
9852 JAE emit_remainder_encodeBetterBlockAsm8B
9853 MOVQ (DX)(CX*1), SI
9854 MOVL BX, 20(SP)
9855 MOVQ $0x0000cf1bbcdcbf9b, R8
9856 MOVQ $0x9e3779b1, BX
9857 MOVQ SI, R9
9858 MOVQ SI, R10
9859 SHLQ $0x10, R9
9860 IMULQ R8, R9
9861 SHRQ $0x36, R9
9862 SHLQ $0x20, R10
9863 IMULQ BX, R10
9864 SHRQ $0x38, R10
9865 MOVL 24(SP)(R9*4), BX
9866 MOVL 4120(SP)(R10*4), DI
9867 MOVL CX, 24(SP)(R9*4)
9868 MOVL CX, 4120(SP)(R10*4)
9869 MOVQ (DX)(BX*1), R9
9870 MOVQ (DX)(DI*1), R10
9871 CMPQ R9, SI
9872 JEQ candidate_match_encodeBetterBlockAsm8B
9873 CMPQ R10, SI
9874 JNE no_short_found_encodeBetterBlockAsm8B
9875 MOVL DI, BX
9876 JMP candidate_match_encodeBetterBlockAsm8B
9877
9878no_short_found_encodeBetterBlockAsm8B:
9879 CMPL R9, SI
9880 JEQ candidate_match_encodeBetterBlockAsm8B
9881 CMPL R10, SI
9882 JEQ candidateS_match_encodeBetterBlockAsm8B
9883 MOVL 20(SP), CX
9884 JMP search_loop_encodeBetterBlockAsm8B
9885
9886candidateS_match_encodeBetterBlockAsm8B:
9887 SHRQ $0x08, SI
9888 MOVQ SI, R9
9889 SHLQ $0x10, R9
9890 IMULQ R8, R9
9891 SHRQ $0x36, R9
9892 MOVL 24(SP)(R9*4), BX
9893 INCL CX
9894 MOVL CX, 24(SP)(R9*4)
9895 CMPL (DX)(BX*1), SI
9896 JEQ candidate_match_encodeBetterBlockAsm8B
9897 DECL CX
9898 MOVL DI, BX
9899
9900candidate_match_encodeBetterBlockAsm8B:
9901 MOVL 12(SP), SI
9902 TESTL BX, BX
9903 JZ match_extend_back_end_encodeBetterBlockAsm8B
9904
9905match_extend_back_loop_encodeBetterBlockAsm8B:
9906 CMPL CX, SI
9907 JBE match_extend_back_end_encodeBetterBlockAsm8B
9908 MOVB -1(DX)(BX*1), DI
9909 MOVB -1(DX)(CX*1), R8
9910 CMPB DI, R8
9911 JNE match_extend_back_end_encodeBetterBlockAsm8B
9912 LEAL -1(CX), CX
9913 DECL BX
9914 JZ match_extend_back_end_encodeBetterBlockAsm8B
9915 JMP match_extend_back_loop_encodeBetterBlockAsm8B
9916
9917match_extend_back_end_encodeBetterBlockAsm8B:
9918 MOVL CX, SI
9919 SUBL 12(SP), SI
9920 LEAQ 3(AX)(SI*1), SI
9921 CMPQ SI, (SP)
9922 JB match_dst_size_check_encodeBetterBlockAsm8B
9923 MOVQ $0x00000000, ret+48(FP)
9924 RET
9925
9926match_dst_size_check_encodeBetterBlockAsm8B:
9927 MOVL CX, SI
9928 ADDL $0x04, CX
9929 ADDL $0x04, BX
9930 MOVQ src_len+32(FP), DI
9931 SUBL CX, DI
9932 LEAQ (DX)(CX*1), R8
9933 LEAQ (DX)(BX*1), R9
9934
9935 // matchLen
9936 XORL R11, R11
9937
9938matchlen_loopback_16_match_nolit_encodeBetterBlockAsm8B:
9939 CMPL DI, $0x10
9940 JB matchlen_match8_match_nolit_encodeBetterBlockAsm8B
9941 MOVQ (R8)(R11*1), R10
9942 MOVQ 8(R8)(R11*1), R12
9943 XORQ (R9)(R11*1), R10
9944 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm8B
9945 XORQ 8(R9)(R11*1), R12
9946 JNZ matchlen_bsf_16match_nolit_encodeBetterBlockAsm8B
9947 LEAL -16(DI), DI
9948 LEAL 16(R11), R11
9949 JMP matchlen_loopback_16_match_nolit_encodeBetterBlockAsm8B
9950
9951matchlen_bsf_16match_nolit_encodeBetterBlockAsm8B:
9952#ifdef GOAMD64_v3
9953 TZCNTQ R12, R12
9954
9955#else
9956 BSFQ R12, R12
9957
9958#endif
9959 SARQ $0x03, R12
9960 LEAL 8(R11)(R12*1), R11
9961 JMP match_nolit_end_encodeBetterBlockAsm8B
9962
9963matchlen_match8_match_nolit_encodeBetterBlockAsm8B:
9964 CMPL DI, $0x08
9965 JB matchlen_match4_match_nolit_encodeBetterBlockAsm8B
9966 MOVQ (R8)(R11*1), R10
9967 XORQ (R9)(R11*1), R10
9968 JNZ matchlen_bsf_8_match_nolit_encodeBetterBlockAsm8B
9969 LEAL -8(DI), DI
9970 LEAL 8(R11), R11
9971 JMP matchlen_match4_match_nolit_encodeBetterBlockAsm8B
9972
9973matchlen_bsf_8_match_nolit_encodeBetterBlockAsm8B:
9974#ifdef GOAMD64_v3
9975 TZCNTQ R10, R10
9976
9977#else
9978 BSFQ R10, R10
9979
9980#endif
9981 SARQ $0x03, R10
9982 LEAL (R11)(R10*1), R11
9983 JMP match_nolit_end_encodeBetterBlockAsm8B
9984
9985matchlen_match4_match_nolit_encodeBetterBlockAsm8B:
9986 CMPL DI, $0x04
9987 JB matchlen_match2_match_nolit_encodeBetterBlockAsm8B
9988 MOVL (R8)(R11*1), R10
9989 CMPL (R9)(R11*1), R10
9990 JNE matchlen_match2_match_nolit_encodeBetterBlockAsm8B
9991 LEAL -4(DI), DI
9992 LEAL 4(R11), R11
9993
9994matchlen_match2_match_nolit_encodeBetterBlockAsm8B:
9995 CMPL DI, $0x01
9996 JE matchlen_match1_match_nolit_encodeBetterBlockAsm8B
9997 JB match_nolit_end_encodeBetterBlockAsm8B
9998 MOVW (R8)(R11*1), R10
9999 CMPW (R9)(R11*1), R10
10000 JNE matchlen_match1_match_nolit_encodeBetterBlockAsm8B
10001 LEAL 2(R11), R11
10002 SUBL $0x02, DI
10003 JZ match_nolit_end_encodeBetterBlockAsm8B
10004
10005matchlen_match1_match_nolit_encodeBetterBlockAsm8B:
10006 MOVB (R8)(R11*1), R10
10007 CMPB (R9)(R11*1), R10
10008 JNE match_nolit_end_encodeBetterBlockAsm8B
10009 LEAL 1(R11), R11
10010
10011match_nolit_end_encodeBetterBlockAsm8B:
10012 MOVL CX, DI
10013 SUBL BX, DI
10014
10015 // Check if repeat
10016 CMPL 16(SP), DI
10017 JEQ match_is_repeat_encodeBetterBlockAsm8B
10018 MOVL DI, 16(SP)
10019 MOVL 12(SP), BX
10020 CMPL BX, SI
10021 JEQ emit_literal_done_match_emit_encodeBetterBlockAsm8B
10022 MOVL SI, R8
10023 MOVL SI, 12(SP)
10024 LEAQ (DX)(BX*1), R9
10025 SUBL BX, R8
10026 LEAL -1(R8), BX
10027 CMPL BX, $0x3c
10028 JB one_byte_match_emit_encodeBetterBlockAsm8B
10029 CMPL BX, $0x00000100
10030 JB two_bytes_match_emit_encodeBetterBlockAsm8B
10031 JB three_bytes_match_emit_encodeBetterBlockAsm8B
10032
10033three_bytes_match_emit_encodeBetterBlockAsm8B:
10034 MOVB $0xf4, (AX)
10035 MOVW BX, 1(AX)
10036 ADDQ $0x03, AX
10037 JMP memmove_long_match_emit_encodeBetterBlockAsm8B
10038
10039two_bytes_match_emit_encodeBetterBlockAsm8B:
10040 MOVB $0xf0, (AX)
10041 MOVB BL, 1(AX)
10042 ADDQ $0x02, AX
10043 CMPL BX, $0x40
10044 JB memmove_match_emit_encodeBetterBlockAsm8B
10045 JMP memmove_long_match_emit_encodeBetterBlockAsm8B
10046
10047one_byte_match_emit_encodeBetterBlockAsm8B:
10048 SHLB $0x02, BL
10049 MOVB BL, (AX)
10050 ADDQ $0x01, AX
10051
10052memmove_match_emit_encodeBetterBlockAsm8B:
10053 LEAQ (AX)(R8*1), BX
10054
10055 // genMemMoveShort
10056 CMPQ R8, $0x04
10057 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_4
10058 CMPQ R8, $0x08
10059 JB emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_4through7
10060 CMPQ R8, $0x10
10061 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_8through16
10062 CMPQ R8, $0x20
10063 JBE emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_17through32
10064 JMP emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_33through64
10065
10066emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_4:
10067 MOVL (R9), R10
10068 MOVL R10, (AX)
10069 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm8B
10070
10071emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_4through7:
10072 MOVL (R9), R10
10073 MOVL -4(R9)(R8*1), R9
10074 MOVL R10, (AX)
10075 MOVL R9, -4(AX)(R8*1)
10076 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm8B
10077
10078emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_8through16:
10079 MOVQ (R9), R10
10080 MOVQ -8(R9)(R8*1), R9
10081 MOVQ R10, (AX)
10082 MOVQ R9, -8(AX)(R8*1)
10083 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm8B
10084
10085emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_17through32:
10086 MOVOU (R9), X0
10087 MOVOU -16(R9)(R8*1), X1
10088 MOVOU X0, (AX)
10089 MOVOU X1, -16(AX)(R8*1)
10090 JMP memmove_end_copy_match_emit_encodeBetterBlockAsm8B
10091
10092emit_lit_memmove_match_emit_encodeBetterBlockAsm8B_memmove_move_33through64:
10093 MOVOU (R9), X0
10094 MOVOU 16(R9), X1
10095 MOVOU -32(R9)(R8*1), X2
10096 MOVOU -16(R9)(R8*1), X3
10097 MOVOU X0, (AX)
10098 MOVOU X1, 16(AX)
10099 MOVOU X2, -32(AX)(R8*1)
10100 MOVOU X3, -16(AX)(R8*1)
10101
10102memmove_end_copy_match_emit_encodeBetterBlockAsm8B:
10103 MOVQ BX, AX
10104 JMP emit_literal_done_match_emit_encodeBetterBlockAsm8B
10105
10106memmove_long_match_emit_encodeBetterBlockAsm8B:
10107 LEAQ (AX)(R8*1), BX
10108
10109 // genMemMoveLong
10110 MOVOU (R9), X0
10111 MOVOU 16(R9), X1
10112 MOVOU -32(R9)(R8*1), X2
10113 MOVOU -16(R9)(R8*1), X3
10114 MOVQ R8, R12
10115 SHRQ $0x05, R12
10116 MOVQ AX, R10
10117 ANDL $0x0000001f, R10
10118 MOVQ $0x00000040, R13
10119 SUBQ R10, R13
10120 DECQ R12
10121 JA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm8Blarge_forward_sse_loop_32
10122 LEAQ -32(R9)(R13*1), R10
10123 LEAQ -32(AX)(R13*1), R14
10124
10125emit_lit_memmove_long_match_emit_encodeBetterBlockAsm8Blarge_big_loop_back:
10126 MOVOU (R10), X4
10127 MOVOU 16(R10), X5
10128 MOVOA X4, (R14)
10129 MOVOA X5, 16(R14)
10130 ADDQ $0x20, R14
10131 ADDQ $0x20, R10
10132 ADDQ $0x20, R13
10133 DECQ R12
10134 JNA emit_lit_memmove_long_match_emit_encodeBetterBlockAsm8Blarge_big_loop_back
10135
10136emit_lit_memmove_long_match_emit_encodeBetterBlockAsm8Blarge_forward_sse_loop_32:
10137 MOVOU -32(R9)(R13*1), X4
10138 MOVOU -16(R9)(R13*1), X5
10139 MOVOA X4, -32(AX)(R13*1)
10140 MOVOA X5, -16(AX)(R13*1)
10141 ADDQ $0x20, R13
10142 CMPQ R8, R13
10143 JAE emit_lit_memmove_long_match_emit_encodeBetterBlockAsm8Blarge_forward_sse_loop_32
10144 MOVOU X0, (AX)
10145 MOVOU X1, 16(AX)
10146 MOVOU X2, -32(AX)(R8*1)
10147 MOVOU X3, -16(AX)(R8*1)
10148 MOVQ BX, AX
10149
10150emit_literal_done_match_emit_encodeBetterBlockAsm8B:
10151 ADDL R11, CX
10152 ADDL $0x04, R11
10153 MOVL CX, 12(SP)
10154
10155 // emitCopy
10156 CMPL R11, $0x40
10157 JBE two_byte_offset_short_match_nolit_encodeBetterBlockAsm8B
10158 CMPL DI, $0x00000800
10159 JAE long_offset_short_match_nolit_encodeBetterBlockAsm8B
10160 MOVL $0x00000001, BX
10161 LEAL 16(BX), BX
10162 MOVB DI, 1(AX)
10163 SHRL $0x08, DI
10164 SHLL $0x05, DI
10165 ORL DI, BX
10166 MOVB BL, (AX)
10167 ADDQ $0x02, AX
10168 SUBL $0x08, R11
10169
10170 // emitRepeat
10171 LEAL -4(R11), R11
10172 JMP cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm8B_emit_copy_short_2b
10173 MOVL R11, BX
10174 LEAL -4(R11), R11
10175 CMPL BX, $0x08
10176 JBE repeat_two_match_nolit_encodeBetterBlockAsm8B_emit_copy_short_2b
10177 CMPL BX, $0x0c
10178 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm8B_emit_copy_short_2b
10179
10180cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm8B_emit_copy_short_2b:
10181 CMPL R11, $0x00000104
10182 JB repeat_three_match_nolit_encodeBetterBlockAsm8B_emit_copy_short_2b
10183 LEAL -256(R11), R11
10184 MOVW $0x0019, (AX)
10185 MOVW R11, 2(AX)
10186 ADDQ $0x04, AX
10187 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10188
10189repeat_three_match_nolit_encodeBetterBlockAsm8B_emit_copy_short_2b:
10190 LEAL -4(R11), R11
10191 MOVW $0x0015, (AX)
10192 MOVB R11, 2(AX)
10193 ADDQ $0x03, AX
10194 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10195
10196repeat_two_match_nolit_encodeBetterBlockAsm8B_emit_copy_short_2b:
10197 SHLL $0x02, R11
10198 ORL $0x01, R11
10199 MOVW R11, (AX)
10200 ADDQ $0x02, AX
10201 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10202 XORQ BX, BX
10203 LEAL 1(BX)(R11*4), R11
10204 MOVB DI, 1(AX)
10205 SARL $0x08, DI
10206 SHLL $0x05, DI
10207 ORL DI, R11
10208 MOVB R11, (AX)
10209 ADDQ $0x02, AX
10210 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10211
10212long_offset_short_match_nolit_encodeBetterBlockAsm8B:
10213 MOVB $0xee, (AX)
10214 MOVW DI, 1(AX)
10215 LEAL -60(R11), R11
10216 ADDQ $0x03, AX
10217
10218 // emitRepeat
10219 MOVL R11, BX
10220 LEAL -4(R11), R11
10221 CMPL BX, $0x08
10222 JBE repeat_two_match_nolit_encodeBetterBlockAsm8B_emit_copy_short
10223 CMPL BX, $0x0c
10224 JAE cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm8B_emit_copy_short
10225
10226cant_repeat_two_offset_match_nolit_encodeBetterBlockAsm8B_emit_copy_short:
10227 CMPL R11, $0x00000104
10228 JB repeat_three_match_nolit_encodeBetterBlockAsm8B_emit_copy_short
10229 LEAL -256(R11), R11
10230 MOVW $0x0019, (AX)
10231 MOVW R11, 2(AX)
10232 ADDQ $0x04, AX
10233 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10234
10235repeat_three_match_nolit_encodeBetterBlockAsm8B_emit_copy_short:
10236 LEAL -4(R11), R11
10237 MOVW $0x0015, (AX)
10238 MOVB R11, 2(AX)
10239 ADDQ $0x03, AX
10240 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10241
10242repeat_two_match_nolit_encodeBetterBlockAsm8B_emit_copy_short:
10243 SHLL $0x02, R11
10244 ORL $0x01, R11
10245 MOVW R11, (AX)
10246 ADDQ $0x02, AX
10247 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10248 XORQ BX, BX
10249 LEAL 1(BX)(R11*4), R11
10250 MOVB DI, 1(AX)
10251 SARL $0x08, DI
10252 SHLL $0x05, DI
10253 ORL DI, R11
10254 MOVB R11, (AX)
10255 ADDQ $0x02, AX
10256 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10257
10258two_byte_offset_short_match_nolit_encodeBetterBlockAsm8B:
10259 MOVL R11, BX
10260 SHLL $0x02, BX
10261 CMPL R11, $0x0c
10262 JAE emit_copy_three_match_nolit_encodeBetterBlockAsm8B
10263 LEAL -15(BX), BX
10264 MOVB DI, 1(AX)
10265 SHRL $0x08, DI
10266 SHLL $0x05, DI
10267 ORL DI, BX
10268 MOVB BL, (AX)
10269 ADDQ $0x02, AX
10270 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10271
10272emit_copy_three_match_nolit_encodeBetterBlockAsm8B:
10273 LEAL -2(BX), BX
10274 MOVB BL, (AX)
10275 MOVW DI, 1(AX)
10276 ADDQ $0x03, AX
10277 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10278
10279match_is_repeat_encodeBetterBlockAsm8B:
10280 MOVL 12(SP), BX
10281 CMPL BX, SI
10282 JEQ emit_literal_done_match_emit_repeat_encodeBetterBlockAsm8B
10283 MOVL SI, DI
10284 MOVL SI, 12(SP)
10285 LEAQ (DX)(BX*1), R8
10286 SUBL BX, DI
10287 LEAL -1(DI), BX
10288 CMPL BX, $0x3c
10289 JB one_byte_match_emit_repeat_encodeBetterBlockAsm8B
10290 CMPL BX, $0x00000100
10291 JB two_bytes_match_emit_repeat_encodeBetterBlockAsm8B
10292 JB three_bytes_match_emit_repeat_encodeBetterBlockAsm8B
10293
10294three_bytes_match_emit_repeat_encodeBetterBlockAsm8B:
10295 MOVB $0xf4, (AX)
10296 MOVW BX, 1(AX)
10297 ADDQ $0x03, AX
10298 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm8B
10299
10300two_bytes_match_emit_repeat_encodeBetterBlockAsm8B:
10301 MOVB $0xf0, (AX)
10302 MOVB BL, 1(AX)
10303 ADDQ $0x02, AX
10304 CMPL BX, $0x40
10305 JB memmove_match_emit_repeat_encodeBetterBlockAsm8B
10306 JMP memmove_long_match_emit_repeat_encodeBetterBlockAsm8B
10307
10308one_byte_match_emit_repeat_encodeBetterBlockAsm8B:
10309 SHLB $0x02, BL
10310 MOVB BL, (AX)
10311 ADDQ $0x01, AX
10312
10313memmove_match_emit_repeat_encodeBetterBlockAsm8B:
10314 LEAQ (AX)(DI*1), BX
10315
10316 // genMemMoveShort
10317 CMPQ DI, $0x04
10318 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_4
10319 CMPQ DI, $0x08
10320 JB emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_4through7
10321 CMPQ DI, $0x10
10322 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_8through16
10323 CMPQ DI, $0x20
10324 JBE emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_17through32
10325 JMP emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_33through64
10326
10327emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_4:
10328 MOVL (R8), R9
10329 MOVL R9, (AX)
10330 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm8B
10331
10332emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_4through7:
10333 MOVL (R8), R9
10334 MOVL -4(R8)(DI*1), R8
10335 MOVL R9, (AX)
10336 MOVL R8, -4(AX)(DI*1)
10337 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm8B
10338
10339emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_8through16:
10340 MOVQ (R8), R9
10341 MOVQ -8(R8)(DI*1), R8
10342 MOVQ R9, (AX)
10343 MOVQ R8, -8(AX)(DI*1)
10344 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm8B
10345
10346emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_17through32:
10347 MOVOU (R8), X0
10348 MOVOU -16(R8)(DI*1), X1
10349 MOVOU X0, (AX)
10350 MOVOU X1, -16(AX)(DI*1)
10351 JMP memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm8B
10352
10353emit_lit_memmove_match_emit_repeat_encodeBetterBlockAsm8B_memmove_move_33through64:
10354 MOVOU (R8), X0
10355 MOVOU 16(R8), X1
10356 MOVOU -32(R8)(DI*1), X2
10357 MOVOU -16(R8)(DI*1), X3
10358 MOVOU X0, (AX)
10359 MOVOU X1, 16(AX)
10360 MOVOU X2, -32(AX)(DI*1)
10361 MOVOU X3, -16(AX)(DI*1)
10362
10363memmove_end_copy_match_emit_repeat_encodeBetterBlockAsm8B:
10364 MOVQ BX, AX
10365 JMP emit_literal_done_match_emit_repeat_encodeBetterBlockAsm8B
10366
10367memmove_long_match_emit_repeat_encodeBetterBlockAsm8B:
10368 LEAQ (AX)(DI*1), BX
10369
10370 // genMemMoveLong
10371 MOVOU (R8), X0
10372 MOVOU 16(R8), X1
10373 MOVOU -32(R8)(DI*1), X2
10374 MOVOU -16(R8)(DI*1), X3
10375 MOVQ DI, R10
10376 SHRQ $0x05, R10
10377 MOVQ AX, R9
10378 ANDL $0x0000001f, R9
10379 MOVQ $0x00000040, R12
10380 SUBQ R9, R12
10381 DECQ R10
10382 JA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm8Blarge_forward_sse_loop_32
10383 LEAQ -32(R8)(R12*1), R9
10384 LEAQ -32(AX)(R12*1), R13
10385
10386emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm8Blarge_big_loop_back:
10387 MOVOU (R9), X4
10388 MOVOU 16(R9), X5
10389 MOVOA X4, (R13)
10390 MOVOA X5, 16(R13)
10391 ADDQ $0x20, R13
10392 ADDQ $0x20, R9
10393 ADDQ $0x20, R12
10394 DECQ R10
10395 JNA emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm8Blarge_big_loop_back
10396
10397emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm8Blarge_forward_sse_loop_32:
10398 MOVOU -32(R8)(R12*1), X4
10399 MOVOU -16(R8)(R12*1), X5
10400 MOVOA X4, -32(AX)(R12*1)
10401 MOVOA X5, -16(AX)(R12*1)
10402 ADDQ $0x20, R12
10403 CMPQ DI, R12
10404 JAE emit_lit_memmove_long_match_emit_repeat_encodeBetterBlockAsm8Blarge_forward_sse_loop_32
10405 MOVOU X0, (AX)
10406 MOVOU X1, 16(AX)
10407 MOVOU X2, -32(AX)(DI*1)
10408 MOVOU X3, -16(AX)(DI*1)
10409 MOVQ BX, AX
10410
10411emit_literal_done_match_emit_repeat_encodeBetterBlockAsm8B:
10412 ADDL R11, CX
10413 ADDL $0x04, R11
10414 MOVL CX, 12(SP)
10415
10416 // emitRepeat
10417 MOVL R11, BX
10418 LEAL -4(R11), R11
10419 CMPL BX, $0x08
10420 JBE repeat_two_match_nolit_repeat_encodeBetterBlockAsm8B
10421 CMPL BX, $0x0c
10422 JAE cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm8B
10423
10424cant_repeat_two_offset_match_nolit_repeat_encodeBetterBlockAsm8B:
10425 CMPL R11, $0x00000104
10426 JB repeat_three_match_nolit_repeat_encodeBetterBlockAsm8B
10427 LEAL -256(R11), R11
10428 MOVW $0x0019, (AX)
10429 MOVW R11, 2(AX)
10430 ADDQ $0x04, AX
10431 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10432
10433repeat_three_match_nolit_repeat_encodeBetterBlockAsm8B:
10434 LEAL -4(R11), R11
10435 MOVW $0x0015, (AX)
10436 MOVB R11, 2(AX)
10437 ADDQ $0x03, AX
10438 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10439
10440repeat_two_match_nolit_repeat_encodeBetterBlockAsm8B:
10441 SHLL $0x02, R11
10442 ORL $0x01, R11
10443 MOVW R11, (AX)
10444 ADDQ $0x02, AX
10445 JMP match_nolit_emitcopy_end_encodeBetterBlockAsm8B
10446 XORQ BX, BX
10447 LEAL 1(BX)(R11*4), R11
10448 MOVB DI, 1(AX)
10449 SARL $0x08, DI
10450 SHLL $0x05, DI
10451 ORL DI, R11
10452 MOVB R11, (AX)
10453 ADDQ $0x02, AX
10454
10455match_nolit_emitcopy_end_encodeBetterBlockAsm8B:
10456 CMPL CX, 8(SP)
10457 JAE emit_remainder_encodeBetterBlockAsm8B
10458 CMPQ AX, (SP)
10459 JB match_nolit_dst_ok_encodeBetterBlockAsm8B
10460 MOVQ $0x00000000, ret+48(FP)
10461 RET
10462
10463match_nolit_dst_ok_encodeBetterBlockAsm8B:
10464 MOVQ $0x0000cf1bbcdcbf9b, BX
10465 MOVQ $0x9e3779b1, DI
10466 LEAQ 1(SI), SI
10467 LEAQ -2(CX), R8
10468 MOVQ (DX)(SI*1), R9
10469 MOVQ 1(DX)(SI*1), R10
10470 MOVQ (DX)(R8*1), R11
10471 MOVQ 1(DX)(R8*1), R12
10472 SHLQ $0x10, R9
10473 IMULQ BX, R9
10474 SHRQ $0x36, R9
10475 SHLQ $0x20, R10
10476 IMULQ DI, R10
10477 SHRQ $0x38, R10
10478 SHLQ $0x10, R11
10479 IMULQ BX, R11
10480 SHRQ $0x36, R11
10481 SHLQ $0x20, R12
10482 IMULQ DI, R12
10483 SHRQ $0x38, R12
10484 LEAQ 1(SI), DI
10485 LEAQ 1(R8), R13
10486 MOVL SI, 24(SP)(R9*4)
10487 MOVL R8, 24(SP)(R11*4)
10488 MOVL DI, 4120(SP)(R10*4)
10489 MOVL R13, 4120(SP)(R12*4)
10490 LEAQ 1(R8)(SI*1), DI
10491 SHRQ $0x01, DI
10492 ADDQ $0x01, SI
10493 SUBQ $0x01, R8
10494
10495index_loop_encodeBetterBlockAsm8B:
10496 CMPQ DI, R8
10497 JAE search_loop_encodeBetterBlockAsm8B
10498 MOVQ (DX)(SI*1), R9
10499 MOVQ (DX)(DI*1), R10
10500 SHLQ $0x10, R9
10501 IMULQ BX, R9
10502 SHRQ $0x36, R9
10503 SHLQ $0x10, R10
10504 IMULQ BX, R10
10505 SHRQ $0x36, R10
10506 MOVL SI, 24(SP)(R9*4)
10507 MOVL DI, 24(SP)(R10*4)
10508 ADDQ $0x02, SI
10509 ADDQ $0x02, DI
10510 JMP index_loop_encodeBetterBlockAsm8B
10511
10512emit_remainder_encodeBetterBlockAsm8B:
10513 MOVQ src_len+32(FP), CX
10514 SUBL 12(SP), CX
10515 LEAQ 3(AX)(CX*1), CX
10516 CMPQ CX, (SP)
10517 JB emit_remainder_ok_encodeBetterBlockAsm8B
10518 MOVQ $0x00000000, ret+48(FP)
10519 RET
10520
10521emit_remainder_ok_encodeBetterBlockAsm8B:
10522 MOVQ src_len+32(FP), CX
10523 MOVL 12(SP), BX
10524 CMPL BX, CX
10525 JEQ emit_literal_done_emit_remainder_encodeBetterBlockAsm8B
10526 MOVL CX, SI
10527 MOVL CX, 12(SP)
10528 LEAQ (DX)(BX*1), CX
10529 SUBL BX, SI
10530 LEAL -1(SI), DX
10531 CMPL DX, $0x3c
10532 JB one_byte_emit_remainder_encodeBetterBlockAsm8B
10533 CMPL DX, $0x00000100
10534 JB two_bytes_emit_remainder_encodeBetterBlockAsm8B
10535 JB three_bytes_emit_remainder_encodeBetterBlockAsm8B
10536
10537three_bytes_emit_remainder_encodeBetterBlockAsm8B:
10538 MOVB $0xf4, (AX)
10539 MOVW DX, 1(AX)
10540 ADDQ $0x03, AX
10541 JMP memmove_long_emit_remainder_encodeBetterBlockAsm8B
10542
10543two_bytes_emit_remainder_encodeBetterBlockAsm8B:
10544 MOVB $0xf0, (AX)
10545 MOVB DL, 1(AX)
10546 ADDQ $0x02, AX
10547 CMPL DX, $0x40
10548 JB memmove_emit_remainder_encodeBetterBlockAsm8B
10549 JMP memmove_long_emit_remainder_encodeBetterBlockAsm8B
10550
10551one_byte_emit_remainder_encodeBetterBlockAsm8B:
10552 SHLB $0x02, DL
10553 MOVB DL, (AX)
10554 ADDQ $0x01, AX
10555
10556memmove_emit_remainder_encodeBetterBlockAsm8B:
10557 LEAQ (AX)(SI*1), DX
10558 MOVL SI, BX
10559
10560 // genMemMoveShort
10561 CMPQ BX, $0x03
10562 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_1or2
10563 JE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_3
10564 CMPQ BX, $0x08
10565 JB emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_4through7
10566 CMPQ BX, $0x10
10567 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_8through16
10568 CMPQ BX, $0x20
10569 JBE emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_17through32
10570 JMP emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_33through64
10571
10572emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_1or2:
10573 MOVB (CX), SI
10574 MOVB -1(CX)(BX*1), CL
10575 MOVB SI, (AX)
10576 MOVB CL, -1(AX)(BX*1)
10577 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm8B
10578
10579emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_3:
10580 MOVW (CX), SI
10581 MOVB 2(CX), CL
10582 MOVW SI, (AX)
10583 MOVB CL, 2(AX)
10584 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm8B
10585
10586emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_4through7:
10587 MOVL (CX), SI
10588 MOVL -4(CX)(BX*1), CX
10589 MOVL SI, (AX)
10590 MOVL CX, -4(AX)(BX*1)
10591 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm8B
10592
10593emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_8through16:
10594 MOVQ (CX), SI
10595 MOVQ -8(CX)(BX*1), CX
10596 MOVQ SI, (AX)
10597 MOVQ CX, -8(AX)(BX*1)
10598 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm8B
10599
10600emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_17through32:
10601 MOVOU (CX), X0
10602 MOVOU -16(CX)(BX*1), X1
10603 MOVOU X0, (AX)
10604 MOVOU X1, -16(AX)(BX*1)
10605 JMP memmove_end_copy_emit_remainder_encodeBetterBlockAsm8B
10606
10607emit_lit_memmove_emit_remainder_encodeBetterBlockAsm8B_memmove_move_33through64:
10608 MOVOU (CX), X0
10609 MOVOU 16(CX), X1
10610 MOVOU -32(CX)(BX*1), X2
10611 MOVOU -16(CX)(BX*1), X3
10612 MOVOU X0, (AX)
10613 MOVOU X1, 16(AX)
10614 MOVOU X2, -32(AX)(BX*1)
10615 MOVOU X3, -16(AX)(BX*1)
10616
10617memmove_end_copy_emit_remainder_encodeBetterBlockAsm8B:
10618 MOVQ DX, AX
10619 JMP emit_literal_done_emit_remainder_encodeBetterBlockAsm8B
10620
10621memmove_long_emit_remainder_encodeBetterBlockAsm8B:
10622 LEAQ (AX)(SI*1), DX
10623 MOVL SI, BX
10624
10625 // genMemMoveLong
10626 MOVOU (CX), X0
10627 MOVOU 16(CX), X1
10628 MOVOU -32(CX)(BX*1), X2
10629 MOVOU -16(CX)(BX*1), X3
10630 MOVQ BX, DI
10631 SHRQ $0x05, DI
10632 MOVQ AX, SI
10633 ANDL $0x0000001f, SI
10634 MOVQ $0x00000040, R8
10635 SUBQ SI, R8
10636 DECQ DI
10637 JA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm8Blarge_forward_sse_loop_32
10638 LEAQ -32(CX)(R8*1), SI
10639 LEAQ -32(AX)(R8*1), R9
10640
10641emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm8Blarge_big_loop_back:
10642 MOVOU (SI), X4
10643 MOVOU 16(SI), X5
10644 MOVOA X4, (R9)
10645 MOVOA X5, 16(R9)
10646 ADDQ $0x20, R9
10647 ADDQ $0x20, SI
10648 ADDQ $0x20, R8
10649 DECQ DI
10650 JNA emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm8Blarge_big_loop_back
10651
10652emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm8Blarge_forward_sse_loop_32:
10653 MOVOU -32(CX)(R8*1), X4
10654 MOVOU -16(CX)(R8*1), X5
10655 MOVOA X4, -32(AX)(R8*1)
10656 MOVOA X5, -16(AX)(R8*1)
10657 ADDQ $0x20, R8
10658 CMPQ BX, R8
10659 JAE emit_lit_memmove_long_emit_remainder_encodeBetterBlockAsm8Blarge_forward_sse_loop_32
10660 MOVOU X0, (AX)
10661 MOVOU X1, 16(AX)
10662 MOVOU X2, -32(AX)(BX*1)
10663 MOVOU X3, -16(AX)(BX*1)
10664 MOVQ DX, AX
10665
10666emit_literal_done_emit_remainder_encodeBetterBlockAsm8B:
10667 MOVQ dst_base+0(FP), CX
10668 SUBQ CX, AX
10669 MOVQ AX, ret+48(FP)
10670 RET
10671
10672// func encodeSnappyBlockAsm(dst []byte, src []byte) int
10673// Requires: BMI, SSE2
10674TEXT ·encodeSnappyBlockAsm(SB), $65560-56
10675 MOVQ dst_base+0(FP), AX
10676 MOVQ $0x00000200, CX
10677 LEAQ 24(SP), DX
10678 PXOR X0, X0
10679
10680zero_loop_encodeSnappyBlockAsm:
10681 MOVOU X0, (DX)
10682 MOVOU X0, 16(DX)
10683 MOVOU X0, 32(DX)
10684 MOVOU X0, 48(DX)
10685 MOVOU X0, 64(DX)
10686 MOVOU X0, 80(DX)
10687 MOVOU X0, 96(DX)
10688 MOVOU X0, 112(DX)
10689 ADDQ $0x80, DX
10690 DECQ CX
10691 JNZ zero_loop_encodeSnappyBlockAsm
10692 MOVL $0x00000000, 12(SP)
10693 MOVQ src_len+32(FP), CX
10694 LEAQ -9(CX), DX
10695 LEAQ -8(CX), BX
10696 MOVL BX, 8(SP)
10697 SHRQ $0x05, CX
10698 SUBL CX, DX
10699 LEAQ (AX)(DX*1), DX
10700 MOVQ DX, (SP)
10701 MOVL $0x00000001, CX
10702 MOVL CX, 16(SP)
10703 MOVQ src_base+24(FP), DX
10704
10705search_loop_encodeSnappyBlockAsm:
10706 MOVL CX, BX
10707 SUBL 12(SP), BX
10708 SHRL $0x06, BX
10709 LEAL 4(CX)(BX*1), BX
10710 CMPL BX, 8(SP)
10711 JAE emit_remainder_encodeSnappyBlockAsm
10712 MOVQ (DX)(CX*1), SI
10713 MOVL BX, 20(SP)
10714 MOVQ $0x0000cf1bbcdcbf9b, R8
10715 MOVQ SI, R9
10716 MOVQ SI, R10
10717 SHRQ $0x08, R10
10718 SHLQ $0x10, R9
10719 IMULQ R8, R9
10720 SHRQ $0x32, R9
10721 SHLQ $0x10, R10
10722 IMULQ R8, R10
10723 SHRQ $0x32, R10
10724 MOVL 24(SP)(R9*4), BX
10725 MOVL 24(SP)(R10*4), DI
10726 MOVL CX, 24(SP)(R9*4)
10727 LEAL 1(CX), R9
10728 MOVL R9, 24(SP)(R10*4)
10729 MOVQ SI, R9
10730 SHRQ $0x10, R9
10731 SHLQ $0x10, R9
10732 IMULQ R8, R9
10733 SHRQ $0x32, R9
10734 MOVL CX, R8
10735 SUBL 16(SP), R8
10736 MOVL 1(DX)(R8*1), R10
10737 MOVQ SI, R8
10738 SHRQ $0x08, R8
10739 CMPL R8, R10
10740 JNE no_repeat_found_encodeSnappyBlockAsm
10741 LEAL 1(CX), SI
10742 MOVL 12(SP), BX
10743 MOVL SI, DI
10744 SUBL 16(SP), DI
10745 JZ repeat_extend_back_end_encodeSnappyBlockAsm
10746
10747repeat_extend_back_loop_encodeSnappyBlockAsm:
10748 CMPL SI, BX
10749 JBE repeat_extend_back_end_encodeSnappyBlockAsm
10750 MOVB -1(DX)(DI*1), R8
10751 MOVB -1(DX)(SI*1), R9
10752 CMPB R8, R9
10753 JNE repeat_extend_back_end_encodeSnappyBlockAsm
10754 LEAL -1(SI), SI
10755 DECL DI
10756 JNZ repeat_extend_back_loop_encodeSnappyBlockAsm
10757
10758repeat_extend_back_end_encodeSnappyBlockAsm:
10759 MOVL 12(SP), BX
10760 CMPL BX, SI
10761 JEQ emit_literal_done_repeat_emit_encodeSnappyBlockAsm
10762 MOVL SI, DI
10763 MOVL SI, 12(SP)
10764 LEAQ (DX)(BX*1), R8
10765 SUBL BX, DI
10766 LEAL -1(DI), BX
10767 CMPL BX, $0x3c
10768 JB one_byte_repeat_emit_encodeSnappyBlockAsm
10769 CMPL BX, $0x00000100
10770 JB two_bytes_repeat_emit_encodeSnappyBlockAsm
10771 CMPL BX, $0x00010000
10772 JB three_bytes_repeat_emit_encodeSnappyBlockAsm
10773 CMPL BX, $0x01000000
10774 JB four_bytes_repeat_emit_encodeSnappyBlockAsm
10775 MOVB $0xfc, (AX)
10776 MOVL BX, 1(AX)
10777 ADDQ $0x05, AX
10778 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm
10779
10780four_bytes_repeat_emit_encodeSnappyBlockAsm:
10781 MOVL BX, R9
10782 SHRL $0x10, R9
10783 MOVB $0xf8, (AX)
10784 MOVW BX, 1(AX)
10785 MOVB R9, 3(AX)
10786 ADDQ $0x04, AX
10787 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm
10788
10789three_bytes_repeat_emit_encodeSnappyBlockAsm:
10790 MOVB $0xf4, (AX)
10791 MOVW BX, 1(AX)
10792 ADDQ $0x03, AX
10793 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm
10794
10795two_bytes_repeat_emit_encodeSnappyBlockAsm:
10796 MOVB $0xf0, (AX)
10797 MOVB BL, 1(AX)
10798 ADDQ $0x02, AX
10799 CMPL BX, $0x40
10800 JB memmove_repeat_emit_encodeSnappyBlockAsm
10801 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm
10802
10803one_byte_repeat_emit_encodeSnappyBlockAsm:
10804 SHLB $0x02, BL
10805 MOVB BL, (AX)
10806 ADDQ $0x01, AX
10807
10808memmove_repeat_emit_encodeSnappyBlockAsm:
10809 LEAQ (AX)(DI*1), BX
10810
10811 // genMemMoveShort
10812 CMPQ DI, $0x08
10813 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_8
10814 CMPQ DI, $0x10
10815 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_8through16
10816 CMPQ DI, $0x20
10817 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_17through32
10818 JMP emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_33through64
10819
10820emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_8:
10821 MOVQ (R8), R9
10822 MOVQ R9, (AX)
10823 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm
10824
10825emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_8through16:
10826 MOVQ (R8), R9
10827 MOVQ -8(R8)(DI*1), R8
10828 MOVQ R9, (AX)
10829 MOVQ R8, -8(AX)(DI*1)
10830 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm
10831
10832emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_17through32:
10833 MOVOU (R8), X0
10834 MOVOU -16(R8)(DI*1), X1
10835 MOVOU X0, (AX)
10836 MOVOU X1, -16(AX)(DI*1)
10837 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm
10838
10839emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm_memmove_move_33through64:
10840 MOVOU (R8), X0
10841 MOVOU 16(R8), X1
10842 MOVOU -32(R8)(DI*1), X2
10843 MOVOU -16(R8)(DI*1), X3
10844 MOVOU X0, (AX)
10845 MOVOU X1, 16(AX)
10846 MOVOU X2, -32(AX)(DI*1)
10847 MOVOU X3, -16(AX)(DI*1)
10848
10849memmove_end_copy_repeat_emit_encodeSnappyBlockAsm:
10850 MOVQ BX, AX
10851 JMP emit_literal_done_repeat_emit_encodeSnappyBlockAsm
10852
10853memmove_long_repeat_emit_encodeSnappyBlockAsm:
10854 LEAQ (AX)(DI*1), BX
10855
10856 // genMemMoveLong
10857 MOVOU (R8), X0
10858 MOVOU 16(R8), X1
10859 MOVOU -32(R8)(DI*1), X2
10860 MOVOU -16(R8)(DI*1), X3
10861 MOVQ DI, R10
10862 SHRQ $0x05, R10
10863 MOVQ AX, R9
10864 ANDL $0x0000001f, R9
10865 MOVQ $0x00000040, R11
10866 SUBQ R9, R11
10867 DECQ R10
10868 JA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsmlarge_forward_sse_loop_32
10869 LEAQ -32(R8)(R11*1), R9
10870 LEAQ -32(AX)(R11*1), R12
10871
10872emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsmlarge_big_loop_back:
10873 MOVOU (R9), X4
10874 MOVOU 16(R9), X5
10875 MOVOA X4, (R12)
10876 MOVOA X5, 16(R12)
10877 ADDQ $0x20, R12
10878 ADDQ $0x20, R9
10879 ADDQ $0x20, R11
10880 DECQ R10
10881 JNA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsmlarge_big_loop_back
10882
10883emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsmlarge_forward_sse_loop_32:
10884 MOVOU -32(R8)(R11*1), X4
10885 MOVOU -16(R8)(R11*1), X5
10886 MOVOA X4, -32(AX)(R11*1)
10887 MOVOA X5, -16(AX)(R11*1)
10888 ADDQ $0x20, R11
10889 CMPQ DI, R11
10890 JAE emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsmlarge_forward_sse_loop_32
10891 MOVOU X0, (AX)
10892 MOVOU X1, 16(AX)
10893 MOVOU X2, -32(AX)(DI*1)
10894 MOVOU X3, -16(AX)(DI*1)
10895 MOVQ BX, AX
10896
10897emit_literal_done_repeat_emit_encodeSnappyBlockAsm:
10898 ADDL $0x05, CX
10899 MOVL CX, BX
10900 SUBL 16(SP), BX
10901 MOVQ src_len+32(FP), DI
10902 SUBL CX, DI
10903 LEAQ (DX)(CX*1), R8
10904 LEAQ (DX)(BX*1), BX
10905
10906 // matchLen
10907 XORL R10, R10
10908
10909matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm:
10910 CMPL DI, $0x10
10911 JB matchlen_match8_repeat_extend_encodeSnappyBlockAsm
10912 MOVQ (R8)(R10*1), R9
10913 MOVQ 8(R8)(R10*1), R11
10914 XORQ (BX)(R10*1), R9
10915 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm
10916 XORQ 8(BX)(R10*1), R11
10917 JNZ matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm
10918 LEAL -16(DI), DI
10919 LEAL 16(R10), R10
10920 JMP matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm
10921
10922matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm:
10923#ifdef GOAMD64_v3
10924 TZCNTQ R11, R11
10925
10926#else
10927 BSFQ R11, R11
10928
10929#endif
10930 SARQ $0x03, R11
10931 LEAL 8(R10)(R11*1), R10
10932 JMP repeat_extend_forward_end_encodeSnappyBlockAsm
10933
10934matchlen_match8_repeat_extend_encodeSnappyBlockAsm:
10935 CMPL DI, $0x08
10936 JB matchlen_match4_repeat_extend_encodeSnappyBlockAsm
10937 MOVQ (R8)(R10*1), R9
10938 XORQ (BX)(R10*1), R9
10939 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm
10940 LEAL -8(DI), DI
10941 LEAL 8(R10), R10
10942 JMP matchlen_match4_repeat_extend_encodeSnappyBlockAsm
10943
10944matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm:
10945#ifdef GOAMD64_v3
10946 TZCNTQ R9, R9
10947
10948#else
10949 BSFQ R9, R9
10950
10951#endif
10952 SARQ $0x03, R9
10953 LEAL (R10)(R9*1), R10
10954 JMP repeat_extend_forward_end_encodeSnappyBlockAsm
10955
10956matchlen_match4_repeat_extend_encodeSnappyBlockAsm:
10957 CMPL DI, $0x04
10958 JB matchlen_match2_repeat_extend_encodeSnappyBlockAsm
10959 MOVL (R8)(R10*1), R9
10960 CMPL (BX)(R10*1), R9
10961 JNE matchlen_match2_repeat_extend_encodeSnappyBlockAsm
10962 LEAL -4(DI), DI
10963 LEAL 4(R10), R10
10964
10965matchlen_match2_repeat_extend_encodeSnappyBlockAsm:
10966 CMPL DI, $0x01
10967 JE matchlen_match1_repeat_extend_encodeSnappyBlockAsm
10968 JB repeat_extend_forward_end_encodeSnappyBlockAsm
10969 MOVW (R8)(R10*1), R9
10970 CMPW (BX)(R10*1), R9
10971 JNE matchlen_match1_repeat_extend_encodeSnappyBlockAsm
10972 LEAL 2(R10), R10
10973 SUBL $0x02, DI
10974 JZ repeat_extend_forward_end_encodeSnappyBlockAsm
10975
10976matchlen_match1_repeat_extend_encodeSnappyBlockAsm:
10977 MOVB (R8)(R10*1), R9
10978 CMPB (BX)(R10*1), R9
10979 JNE repeat_extend_forward_end_encodeSnappyBlockAsm
10980 LEAL 1(R10), R10
10981
10982repeat_extend_forward_end_encodeSnappyBlockAsm:
10983 ADDL R10, CX
10984 MOVL CX, BX
10985 SUBL SI, BX
10986 MOVL 16(SP), SI
10987
10988 // emitCopy
10989 CMPL SI, $0x00010000
10990 JB two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm
10991
10992four_bytes_loop_back_repeat_as_copy_encodeSnappyBlockAsm:
10993 CMPL BX, $0x40
10994 JBE four_bytes_remain_repeat_as_copy_encodeSnappyBlockAsm
10995 MOVB $0xff, (AX)
10996 MOVL SI, 1(AX)
10997 LEAL -64(BX), BX
10998 ADDQ $0x05, AX
10999 CMPL BX, $0x04
11000 JB four_bytes_remain_repeat_as_copy_encodeSnappyBlockAsm
11001 JMP four_bytes_loop_back_repeat_as_copy_encodeSnappyBlockAsm
11002
11003four_bytes_remain_repeat_as_copy_encodeSnappyBlockAsm:
11004 TESTL BX, BX
11005 JZ repeat_end_emit_encodeSnappyBlockAsm
11006 XORL DI, DI
11007 LEAL -1(DI)(BX*4), BX
11008 MOVB BL, (AX)
11009 MOVL SI, 1(AX)
11010 ADDQ $0x05, AX
11011 JMP repeat_end_emit_encodeSnappyBlockAsm
11012
11013two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm:
11014 CMPL BX, $0x40
11015 JBE two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm
11016 MOVB $0xee, (AX)
11017 MOVW SI, 1(AX)
11018 LEAL -60(BX), BX
11019 ADDQ $0x03, AX
11020 JMP two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm
11021
11022two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm:
11023 MOVL BX, DI
11024 SHLL $0x02, DI
11025 CMPL BX, $0x0c
11026 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm
11027 CMPL SI, $0x00000800
11028 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm
11029 LEAL -15(DI), DI
11030 MOVB SI, 1(AX)
11031 SHRL $0x08, SI
11032 SHLL $0x05, SI
11033 ORL SI, DI
11034 MOVB DI, (AX)
11035 ADDQ $0x02, AX
11036 JMP repeat_end_emit_encodeSnappyBlockAsm
11037
11038emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm:
11039 LEAL -2(DI), DI
11040 MOVB DI, (AX)
11041 MOVW SI, 1(AX)
11042 ADDQ $0x03, AX
11043
11044repeat_end_emit_encodeSnappyBlockAsm:
11045 MOVL CX, 12(SP)
11046 JMP search_loop_encodeSnappyBlockAsm
11047
11048no_repeat_found_encodeSnappyBlockAsm:
11049 CMPL (DX)(BX*1), SI
11050 JEQ candidate_match_encodeSnappyBlockAsm
11051 SHRQ $0x08, SI
11052 MOVL 24(SP)(R9*4), BX
11053 LEAL 2(CX), R8
11054 CMPL (DX)(DI*1), SI
11055 JEQ candidate2_match_encodeSnappyBlockAsm
11056 MOVL R8, 24(SP)(R9*4)
11057 SHRQ $0x08, SI
11058 CMPL (DX)(BX*1), SI
11059 JEQ candidate3_match_encodeSnappyBlockAsm
11060 MOVL 20(SP), CX
11061 JMP search_loop_encodeSnappyBlockAsm
11062
11063candidate3_match_encodeSnappyBlockAsm:
11064 ADDL $0x02, CX
11065 JMP candidate_match_encodeSnappyBlockAsm
11066
11067candidate2_match_encodeSnappyBlockAsm:
11068 MOVL R8, 24(SP)(R9*4)
11069 INCL CX
11070 MOVL DI, BX
11071
11072candidate_match_encodeSnappyBlockAsm:
11073 MOVL 12(SP), SI
11074 TESTL BX, BX
11075 JZ match_extend_back_end_encodeSnappyBlockAsm
11076
11077match_extend_back_loop_encodeSnappyBlockAsm:
11078 CMPL CX, SI
11079 JBE match_extend_back_end_encodeSnappyBlockAsm
11080 MOVB -1(DX)(BX*1), DI
11081 MOVB -1(DX)(CX*1), R8
11082 CMPB DI, R8
11083 JNE match_extend_back_end_encodeSnappyBlockAsm
11084 LEAL -1(CX), CX
11085 DECL BX
11086 JZ match_extend_back_end_encodeSnappyBlockAsm
11087 JMP match_extend_back_loop_encodeSnappyBlockAsm
11088
11089match_extend_back_end_encodeSnappyBlockAsm:
11090 MOVL CX, SI
11091 SUBL 12(SP), SI
11092 LEAQ 5(AX)(SI*1), SI
11093 CMPQ SI, (SP)
11094 JB match_dst_size_check_encodeSnappyBlockAsm
11095 MOVQ $0x00000000, ret+48(FP)
11096 RET
11097
11098match_dst_size_check_encodeSnappyBlockAsm:
11099 MOVL CX, SI
11100 MOVL 12(SP), DI
11101 CMPL DI, SI
11102 JEQ emit_literal_done_match_emit_encodeSnappyBlockAsm
11103 MOVL SI, R8
11104 MOVL SI, 12(SP)
11105 LEAQ (DX)(DI*1), SI
11106 SUBL DI, R8
11107 LEAL -1(R8), DI
11108 CMPL DI, $0x3c
11109 JB one_byte_match_emit_encodeSnappyBlockAsm
11110 CMPL DI, $0x00000100
11111 JB two_bytes_match_emit_encodeSnappyBlockAsm
11112 CMPL DI, $0x00010000
11113 JB three_bytes_match_emit_encodeSnappyBlockAsm
11114 CMPL DI, $0x01000000
11115 JB four_bytes_match_emit_encodeSnappyBlockAsm
11116 MOVB $0xfc, (AX)
11117 MOVL DI, 1(AX)
11118 ADDQ $0x05, AX
11119 JMP memmove_long_match_emit_encodeSnappyBlockAsm
11120
11121four_bytes_match_emit_encodeSnappyBlockAsm:
11122 MOVL DI, R9
11123 SHRL $0x10, R9
11124 MOVB $0xf8, (AX)
11125 MOVW DI, 1(AX)
11126 MOVB R9, 3(AX)
11127 ADDQ $0x04, AX
11128 JMP memmove_long_match_emit_encodeSnappyBlockAsm
11129
11130three_bytes_match_emit_encodeSnappyBlockAsm:
11131 MOVB $0xf4, (AX)
11132 MOVW DI, 1(AX)
11133 ADDQ $0x03, AX
11134 JMP memmove_long_match_emit_encodeSnappyBlockAsm
11135
11136two_bytes_match_emit_encodeSnappyBlockAsm:
11137 MOVB $0xf0, (AX)
11138 MOVB DI, 1(AX)
11139 ADDQ $0x02, AX
11140 CMPL DI, $0x40
11141 JB memmove_match_emit_encodeSnappyBlockAsm
11142 JMP memmove_long_match_emit_encodeSnappyBlockAsm
11143
11144one_byte_match_emit_encodeSnappyBlockAsm:
11145 SHLB $0x02, DI
11146 MOVB DI, (AX)
11147 ADDQ $0x01, AX
11148
11149memmove_match_emit_encodeSnappyBlockAsm:
11150 LEAQ (AX)(R8*1), DI
11151
11152 // genMemMoveShort
11153 CMPQ R8, $0x08
11154 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_8
11155 CMPQ R8, $0x10
11156 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_8through16
11157 CMPQ R8, $0x20
11158 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_17through32
11159 JMP emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_33through64
11160
11161emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_8:
11162 MOVQ (SI), R9
11163 MOVQ R9, (AX)
11164 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm
11165
11166emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_8through16:
11167 MOVQ (SI), R9
11168 MOVQ -8(SI)(R8*1), SI
11169 MOVQ R9, (AX)
11170 MOVQ SI, -8(AX)(R8*1)
11171 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm
11172
11173emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_17through32:
11174 MOVOU (SI), X0
11175 MOVOU -16(SI)(R8*1), X1
11176 MOVOU X0, (AX)
11177 MOVOU X1, -16(AX)(R8*1)
11178 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm
11179
11180emit_lit_memmove_match_emit_encodeSnappyBlockAsm_memmove_move_33through64:
11181 MOVOU (SI), X0
11182 MOVOU 16(SI), X1
11183 MOVOU -32(SI)(R8*1), X2
11184 MOVOU -16(SI)(R8*1), X3
11185 MOVOU X0, (AX)
11186 MOVOU X1, 16(AX)
11187 MOVOU X2, -32(AX)(R8*1)
11188 MOVOU X3, -16(AX)(R8*1)
11189
11190memmove_end_copy_match_emit_encodeSnappyBlockAsm:
11191 MOVQ DI, AX
11192 JMP emit_literal_done_match_emit_encodeSnappyBlockAsm
11193
11194memmove_long_match_emit_encodeSnappyBlockAsm:
11195 LEAQ (AX)(R8*1), DI
11196
11197 // genMemMoveLong
11198 MOVOU (SI), X0
11199 MOVOU 16(SI), X1
11200 MOVOU -32(SI)(R8*1), X2
11201 MOVOU -16(SI)(R8*1), X3
11202 MOVQ R8, R10
11203 SHRQ $0x05, R10
11204 MOVQ AX, R9
11205 ANDL $0x0000001f, R9
11206 MOVQ $0x00000040, R11
11207 SUBQ R9, R11
11208 DECQ R10
11209 JA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsmlarge_forward_sse_loop_32
11210 LEAQ -32(SI)(R11*1), R9
11211 LEAQ -32(AX)(R11*1), R12
11212
11213emit_lit_memmove_long_match_emit_encodeSnappyBlockAsmlarge_big_loop_back:
11214 MOVOU (R9), X4
11215 MOVOU 16(R9), X5
11216 MOVOA X4, (R12)
11217 MOVOA X5, 16(R12)
11218 ADDQ $0x20, R12
11219 ADDQ $0x20, R9
11220 ADDQ $0x20, R11
11221 DECQ R10
11222 JNA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsmlarge_big_loop_back
11223
11224emit_lit_memmove_long_match_emit_encodeSnappyBlockAsmlarge_forward_sse_loop_32:
11225 MOVOU -32(SI)(R11*1), X4
11226 MOVOU -16(SI)(R11*1), X5
11227 MOVOA X4, -32(AX)(R11*1)
11228 MOVOA X5, -16(AX)(R11*1)
11229 ADDQ $0x20, R11
11230 CMPQ R8, R11
11231 JAE emit_lit_memmove_long_match_emit_encodeSnappyBlockAsmlarge_forward_sse_loop_32
11232 MOVOU X0, (AX)
11233 MOVOU X1, 16(AX)
11234 MOVOU X2, -32(AX)(R8*1)
11235 MOVOU X3, -16(AX)(R8*1)
11236 MOVQ DI, AX
11237
11238emit_literal_done_match_emit_encodeSnappyBlockAsm:
11239match_nolit_loop_encodeSnappyBlockAsm:
11240 MOVL CX, SI
11241 SUBL BX, SI
11242 MOVL SI, 16(SP)
11243 ADDL $0x04, CX
11244 ADDL $0x04, BX
11245 MOVQ src_len+32(FP), SI
11246 SUBL CX, SI
11247 LEAQ (DX)(CX*1), DI
11248 LEAQ (DX)(BX*1), BX
11249
11250 // matchLen
11251 XORL R9, R9
11252
11253matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm:
11254 CMPL SI, $0x10
11255 JB matchlen_match8_match_nolit_encodeSnappyBlockAsm
11256 MOVQ (DI)(R9*1), R8
11257 MOVQ 8(DI)(R9*1), R10
11258 XORQ (BX)(R9*1), R8
11259 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm
11260 XORQ 8(BX)(R9*1), R10
11261 JNZ matchlen_bsf_16match_nolit_encodeSnappyBlockAsm
11262 LEAL -16(SI), SI
11263 LEAL 16(R9), R9
11264 JMP matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm
11265
11266matchlen_bsf_16match_nolit_encodeSnappyBlockAsm:
11267#ifdef GOAMD64_v3
11268 TZCNTQ R10, R10
11269
11270#else
11271 BSFQ R10, R10
11272
11273#endif
11274 SARQ $0x03, R10
11275 LEAL 8(R9)(R10*1), R9
11276 JMP match_nolit_end_encodeSnappyBlockAsm
11277
11278matchlen_match8_match_nolit_encodeSnappyBlockAsm:
11279 CMPL SI, $0x08
11280 JB matchlen_match4_match_nolit_encodeSnappyBlockAsm
11281 MOVQ (DI)(R9*1), R8
11282 XORQ (BX)(R9*1), R8
11283 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm
11284 LEAL -8(SI), SI
11285 LEAL 8(R9), R9
11286 JMP matchlen_match4_match_nolit_encodeSnappyBlockAsm
11287
11288matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm:
11289#ifdef GOAMD64_v3
11290 TZCNTQ R8, R8
11291
11292#else
11293 BSFQ R8, R8
11294
11295#endif
11296 SARQ $0x03, R8
11297 LEAL (R9)(R8*1), R9
11298 JMP match_nolit_end_encodeSnappyBlockAsm
11299
11300matchlen_match4_match_nolit_encodeSnappyBlockAsm:
11301 CMPL SI, $0x04
11302 JB matchlen_match2_match_nolit_encodeSnappyBlockAsm
11303 MOVL (DI)(R9*1), R8
11304 CMPL (BX)(R9*1), R8
11305 JNE matchlen_match2_match_nolit_encodeSnappyBlockAsm
11306 LEAL -4(SI), SI
11307 LEAL 4(R9), R9
11308
11309matchlen_match2_match_nolit_encodeSnappyBlockAsm:
11310 CMPL SI, $0x01
11311 JE matchlen_match1_match_nolit_encodeSnappyBlockAsm
11312 JB match_nolit_end_encodeSnappyBlockAsm
11313 MOVW (DI)(R9*1), R8
11314 CMPW (BX)(R9*1), R8
11315 JNE matchlen_match1_match_nolit_encodeSnappyBlockAsm
11316 LEAL 2(R9), R9
11317 SUBL $0x02, SI
11318 JZ match_nolit_end_encodeSnappyBlockAsm
11319
11320matchlen_match1_match_nolit_encodeSnappyBlockAsm:
11321 MOVB (DI)(R9*1), R8
11322 CMPB (BX)(R9*1), R8
11323 JNE match_nolit_end_encodeSnappyBlockAsm
11324 LEAL 1(R9), R9
11325
11326match_nolit_end_encodeSnappyBlockAsm:
11327 ADDL R9, CX
11328 MOVL 16(SP), BX
11329 ADDL $0x04, R9
11330 MOVL CX, 12(SP)
11331
11332 // emitCopy
11333 CMPL BX, $0x00010000
11334 JB two_byte_offset_match_nolit_encodeSnappyBlockAsm
11335
11336four_bytes_loop_back_match_nolit_encodeSnappyBlockAsm:
11337 CMPL R9, $0x40
11338 JBE four_bytes_remain_match_nolit_encodeSnappyBlockAsm
11339 MOVB $0xff, (AX)
11340 MOVL BX, 1(AX)
11341 LEAL -64(R9), R9
11342 ADDQ $0x05, AX
11343 CMPL R9, $0x04
11344 JB four_bytes_remain_match_nolit_encodeSnappyBlockAsm
11345 JMP four_bytes_loop_back_match_nolit_encodeSnappyBlockAsm
11346
11347four_bytes_remain_match_nolit_encodeSnappyBlockAsm:
11348 TESTL R9, R9
11349 JZ match_nolit_emitcopy_end_encodeSnappyBlockAsm
11350 XORL SI, SI
11351 LEAL -1(SI)(R9*4), R9
11352 MOVB R9, (AX)
11353 MOVL BX, 1(AX)
11354 ADDQ $0x05, AX
11355 JMP match_nolit_emitcopy_end_encodeSnappyBlockAsm
11356
11357two_byte_offset_match_nolit_encodeSnappyBlockAsm:
11358 CMPL R9, $0x40
11359 JBE two_byte_offset_short_match_nolit_encodeSnappyBlockAsm
11360 MOVB $0xee, (AX)
11361 MOVW BX, 1(AX)
11362 LEAL -60(R9), R9
11363 ADDQ $0x03, AX
11364 JMP two_byte_offset_match_nolit_encodeSnappyBlockAsm
11365
11366two_byte_offset_short_match_nolit_encodeSnappyBlockAsm:
11367 MOVL R9, SI
11368 SHLL $0x02, SI
11369 CMPL R9, $0x0c
11370 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm
11371 CMPL BX, $0x00000800
11372 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm
11373 LEAL -15(SI), SI
11374 MOVB BL, 1(AX)
11375 SHRL $0x08, BX
11376 SHLL $0x05, BX
11377 ORL BX, SI
11378 MOVB SI, (AX)
11379 ADDQ $0x02, AX
11380 JMP match_nolit_emitcopy_end_encodeSnappyBlockAsm
11381
11382emit_copy_three_match_nolit_encodeSnappyBlockAsm:
11383 LEAL -2(SI), SI
11384 MOVB SI, (AX)
11385 MOVW BX, 1(AX)
11386 ADDQ $0x03, AX
11387
11388match_nolit_emitcopy_end_encodeSnappyBlockAsm:
11389 CMPL CX, 8(SP)
11390 JAE emit_remainder_encodeSnappyBlockAsm
11391 MOVQ -2(DX)(CX*1), SI
11392 CMPQ AX, (SP)
11393 JB match_nolit_dst_ok_encodeSnappyBlockAsm
11394 MOVQ $0x00000000, ret+48(FP)
11395 RET
11396
11397match_nolit_dst_ok_encodeSnappyBlockAsm:
11398 MOVQ $0x0000cf1bbcdcbf9b, R8
11399 MOVQ SI, DI
11400 SHRQ $0x10, SI
11401 MOVQ SI, BX
11402 SHLQ $0x10, DI
11403 IMULQ R8, DI
11404 SHRQ $0x32, DI
11405 SHLQ $0x10, BX
11406 IMULQ R8, BX
11407 SHRQ $0x32, BX
11408 LEAL -2(CX), R8
11409 LEAQ 24(SP)(BX*4), R9
11410 MOVL (R9), BX
11411 MOVL R8, 24(SP)(DI*4)
11412 MOVL CX, (R9)
11413 CMPL (DX)(BX*1), SI
11414 JEQ match_nolit_loop_encodeSnappyBlockAsm
11415 INCL CX
11416 JMP search_loop_encodeSnappyBlockAsm
11417
11418emit_remainder_encodeSnappyBlockAsm:
11419 MOVQ src_len+32(FP), CX
11420 SUBL 12(SP), CX
11421 LEAQ 5(AX)(CX*1), CX
11422 CMPQ CX, (SP)
11423 JB emit_remainder_ok_encodeSnappyBlockAsm
11424 MOVQ $0x00000000, ret+48(FP)
11425 RET
11426
11427emit_remainder_ok_encodeSnappyBlockAsm:
11428 MOVQ src_len+32(FP), CX
11429 MOVL 12(SP), BX
11430 CMPL BX, CX
11431 JEQ emit_literal_done_emit_remainder_encodeSnappyBlockAsm
11432 MOVL CX, SI
11433 MOVL CX, 12(SP)
11434 LEAQ (DX)(BX*1), CX
11435 SUBL BX, SI
11436 LEAL -1(SI), DX
11437 CMPL DX, $0x3c
11438 JB one_byte_emit_remainder_encodeSnappyBlockAsm
11439 CMPL DX, $0x00000100
11440 JB two_bytes_emit_remainder_encodeSnappyBlockAsm
11441 CMPL DX, $0x00010000
11442 JB three_bytes_emit_remainder_encodeSnappyBlockAsm
11443 CMPL DX, $0x01000000
11444 JB four_bytes_emit_remainder_encodeSnappyBlockAsm
11445 MOVB $0xfc, (AX)
11446 MOVL DX, 1(AX)
11447 ADDQ $0x05, AX
11448 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm
11449
11450four_bytes_emit_remainder_encodeSnappyBlockAsm:
11451 MOVL DX, BX
11452 SHRL $0x10, BX
11453 MOVB $0xf8, (AX)
11454 MOVW DX, 1(AX)
11455 MOVB BL, 3(AX)
11456 ADDQ $0x04, AX
11457 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm
11458
11459three_bytes_emit_remainder_encodeSnappyBlockAsm:
11460 MOVB $0xf4, (AX)
11461 MOVW DX, 1(AX)
11462 ADDQ $0x03, AX
11463 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm
11464
11465two_bytes_emit_remainder_encodeSnappyBlockAsm:
11466 MOVB $0xf0, (AX)
11467 MOVB DL, 1(AX)
11468 ADDQ $0x02, AX
11469 CMPL DX, $0x40
11470 JB memmove_emit_remainder_encodeSnappyBlockAsm
11471 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm
11472
11473one_byte_emit_remainder_encodeSnappyBlockAsm:
11474 SHLB $0x02, DL
11475 MOVB DL, (AX)
11476 ADDQ $0x01, AX
11477
11478memmove_emit_remainder_encodeSnappyBlockAsm:
11479 LEAQ (AX)(SI*1), DX
11480 MOVL SI, BX
11481
11482 // genMemMoveShort
11483 CMPQ BX, $0x03
11484 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_1or2
11485 JE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_3
11486 CMPQ BX, $0x08
11487 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_4through7
11488 CMPQ BX, $0x10
11489 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_8through16
11490 CMPQ BX, $0x20
11491 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_17through32
11492 JMP emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_33through64
11493
11494emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_1or2:
11495 MOVB (CX), SI
11496 MOVB -1(CX)(BX*1), CL
11497 MOVB SI, (AX)
11498 MOVB CL, -1(AX)(BX*1)
11499 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm
11500
11501emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_3:
11502 MOVW (CX), SI
11503 MOVB 2(CX), CL
11504 MOVW SI, (AX)
11505 MOVB CL, 2(AX)
11506 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm
11507
11508emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_4through7:
11509 MOVL (CX), SI
11510 MOVL -4(CX)(BX*1), CX
11511 MOVL SI, (AX)
11512 MOVL CX, -4(AX)(BX*1)
11513 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm
11514
11515emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_8through16:
11516 MOVQ (CX), SI
11517 MOVQ -8(CX)(BX*1), CX
11518 MOVQ SI, (AX)
11519 MOVQ CX, -8(AX)(BX*1)
11520 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm
11521
11522emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_17through32:
11523 MOVOU (CX), X0
11524 MOVOU -16(CX)(BX*1), X1
11525 MOVOU X0, (AX)
11526 MOVOU X1, -16(AX)(BX*1)
11527 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm
11528
11529emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm_memmove_move_33through64:
11530 MOVOU (CX), X0
11531 MOVOU 16(CX), X1
11532 MOVOU -32(CX)(BX*1), X2
11533 MOVOU -16(CX)(BX*1), X3
11534 MOVOU X0, (AX)
11535 MOVOU X1, 16(AX)
11536 MOVOU X2, -32(AX)(BX*1)
11537 MOVOU X3, -16(AX)(BX*1)
11538
11539memmove_end_copy_emit_remainder_encodeSnappyBlockAsm:
11540 MOVQ DX, AX
11541 JMP emit_literal_done_emit_remainder_encodeSnappyBlockAsm
11542
11543memmove_long_emit_remainder_encodeSnappyBlockAsm:
11544 LEAQ (AX)(SI*1), DX
11545 MOVL SI, BX
11546
11547 // genMemMoveLong
11548 MOVOU (CX), X0
11549 MOVOU 16(CX), X1
11550 MOVOU -32(CX)(BX*1), X2
11551 MOVOU -16(CX)(BX*1), X3
11552 MOVQ BX, DI
11553 SHRQ $0x05, DI
11554 MOVQ AX, SI
11555 ANDL $0x0000001f, SI
11556 MOVQ $0x00000040, R8
11557 SUBQ SI, R8
11558 DECQ DI
11559 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsmlarge_forward_sse_loop_32
11560 LEAQ -32(CX)(R8*1), SI
11561 LEAQ -32(AX)(R8*1), R9
11562
11563emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsmlarge_big_loop_back:
11564 MOVOU (SI), X4
11565 MOVOU 16(SI), X5
11566 MOVOA X4, (R9)
11567 MOVOA X5, 16(R9)
11568 ADDQ $0x20, R9
11569 ADDQ $0x20, SI
11570 ADDQ $0x20, R8
11571 DECQ DI
11572 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsmlarge_big_loop_back
11573
11574emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsmlarge_forward_sse_loop_32:
11575 MOVOU -32(CX)(R8*1), X4
11576 MOVOU -16(CX)(R8*1), X5
11577 MOVOA X4, -32(AX)(R8*1)
11578 MOVOA X5, -16(AX)(R8*1)
11579 ADDQ $0x20, R8
11580 CMPQ BX, R8
11581 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsmlarge_forward_sse_loop_32
11582 MOVOU X0, (AX)
11583 MOVOU X1, 16(AX)
11584 MOVOU X2, -32(AX)(BX*1)
11585 MOVOU X3, -16(AX)(BX*1)
11586 MOVQ DX, AX
11587
11588emit_literal_done_emit_remainder_encodeSnappyBlockAsm:
11589 MOVQ dst_base+0(FP), CX
11590 SUBQ CX, AX
11591 MOVQ AX, ret+48(FP)
11592 RET
11593
11594// func encodeSnappyBlockAsm64K(dst []byte, src []byte) int
11595// Requires: BMI, SSE2
11596TEXT ·encodeSnappyBlockAsm64K(SB), $65560-56
11597 MOVQ dst_base+0(FP), AX
11598 MOVQ $0x00000200, CX
11599 LEAQ 24(SP), DX
11600 PXOR X0, X0
11601
11602zero_loop_encodeSnappyBlockAsm64K:
11603 MOVOU X0, (DX)
11604 MOVOU X0, 16(DX)
11605 MOVOU X0, 32(DX)
11606 MOVOU X0, 48(DX)
11607 MOVOU X0, 64(DX)
11608 MOVOU X0, 80(DX)
11609 MOVOU X0, 96(DX)
11610 MOVOU X0, 112(DX)
11611 ADDQ $0x80, DX
11612 DECQ CX
11613 JNZ zero_loop_encodeSnappyBlockAsm64K
11614 MOVL $0x00000000, 12(SP)
11615 MOVQ src_len+32(FP), CX
11616 LEAQ -9(CX), DX
11617 LEAQ -8(CX), BX
11618 MOVL BX, 8(SP)
11619 SHRQ $0x05, CX
11620 SUBL CX, DX
11621 LEAQ (AX)(DX*1), DX
11622 MOVQ DX, (SP)
11623 MOVL $0x00000001, CX
11624 MOVL CX, 16(SP)
11625 MOVQ src_base+24(FP), DX
11626
11627search_loop_encodeSnappyBlockAsm64K:
11628 MOVL CX, BX
11629 SUBL 12(SP), BX
11630 SHRL $0x06, BX
11631 LEAL 4(CX)(BX*1), BX
11632 CMPL BX, 8(SP)
11633 JAE emit_remainder_encodeSnappyBlockAsm64K
11634 MOVQ (DX)(CX*1), SI
11635 MOVL BX, 20(SP)
11636 MOVQ $0x0000cf1bbcdcbf9b, R8
11637 MOVQ SI, R9
11638 MOVQ SI, R10
11639 SHRQ $0x08, R10
11640 SHLQ $0x10, R9
11641 IMULQ R8, R9
11642 SHRQ $0x32, R9
11643 SHLQ $0x10, R10
11644 IMULQ R8, R10
11645 SHRQ $0x32, R10
11646 MOVL 24(SP)(R9*4), BX
11647 MOVL 24(SP)(R10*4), DI
11648 MOVL CX, 24(SP)(R9*4)
11649 LEAL 1(CX), R9
11650 MOVL R9, 24(SP)(R10*4)
11651 MOVQ SI, R9
11652 SHRQ $0x10, R9
11653 SHLQ $0x10, R9
11654 IMULQ R8, R9
11655 SHRQ $0x32, R9
11656 MOVL CX, R8
11657 SUBL 16(SP), R8
11658 MOVL 1(DX)(R8*1), R10
11659 MOVQ SI, R8
11660 SHRQ $0x08, R8
11661 CMPL R8, R10
11662 JNE no_repeat_found_encodeSnappyBlockAsm64K
11663 LEAL 1(CX), SI
11664 MOVL 12(SP), BX
11665 MOVL SI, DI
11666 SUBL 16(SP), DI
11667 JZ repeat_extend_back_end_encodeSnappyBlockAsm64K
11668
11669repeat_extend_back_loop_encodeSnappyBlockAsm64K:
11670 CMPL SI, BX
11671 JBE repeat_extend_back_end_encodeSnappyBlockAsm64K
11672 MOVB -1(DX)(DI*1), R8
11673 MOVB -1(DX)(SI*1), R9
11674 CMPB R8, R9
11675 JNE repeat_extend_back_end_encodeSnappyBlockAsm64K
11676 LEAL -1(SI), SI
11677 DECL DI
11678 JNZ repeat_extend_back_loop_encodeSnappyBlockAsm64K
11679
11680repeat_extend_back_end_encodeSnappyBlockAsm64K:
11681 MOVL 12(SP), BX
11682 CMPL BX, SI
11683 JEQ emit_literal_done_repeat_emit_encodeSnappyBlockAsm64K
11684 MOVL SI, DI
11685 MOVL SI, 12(SP)
11686 LEAQ (DX)(BX*1), R8
11687 SUBL BX, DI
11688 LEAL -1(DI), BX
11689 CMPL BX, $0x3c
11690 JB one_byte_repeat_emit_encodeSnappyBlockAsm64K
11691 CMPL BX, $0x00000100
11692 JB two_bytes_repeat_emit_encodeSnappyBlockAsm64K
11693 JB three_bytes_repeat_emit_encodeSnappyBlockAsm64K
11694
11695three_bytes_repeat_emit_encodeSnappyBlockAsm64K:
11696 MOVB $0xf4, (AX)
11697 MOVW BX, 1(AX)
11698 ADDQ $0x03, AX
11699 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm64K
11700
11701two_bytes_repeat_emit_encodeSnappyBlockAsm64K:
11702 MOVB $0xf0, (AX)
11703 MOVB BL, 1(AX)
11704 ADDQ $0x02, AX
11705 CMPL BX, $0x40
11706 JB memmove_repeat_emit_encodeSnappyBlockAsm64K
11707 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm64K
11708
11709one_byte_repeat_emit_encodeSnappyBlockAsm64K:
11710 SHLB $0x02, BL
11711 MOVB BL, (AX)
11712 ADDQ $0x01, AX
11713
11714memmove_repeat_emit_encodeSnappyBlockAsm64K:
11715 LEAQ (AX)(DI*1), BX
11716
11717 // genMemMoveShort
11718 CMPQ DI, $0x08
11719 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_8
11720 CMPQ DI, $0x10
11721 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_8through16
11722 CMPQ DI, $0x20
11723 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_17through32
11724 JMP emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_33through64
11725
11726emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_8:
11727 MOVQ (R8), R9
11728 MOVQ R9, (AX)
11729 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm64K
11730
11731emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_8through16:
11732 MOVQ (R8), R9
11733 MOVQ -8(R8)(DI*1), R8
11734 MOVQ R9, (AX)
11735 MOVQ R8, -8(AX)(DI*1)
11736 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm64K
11737
11738emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_17through32:
11739 MOVOU (R8), X0
11740 MOVOU -16(R8)(DI*1), X1
11741 MOVOU X0, (AX)
11742 MOVOU X1, -16(AX)(DI*1)
11743 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm64K
11744
11745emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm64K_memmove_move_33through64:
11746 MOVOU (R8), X0
11747 MOVOU 16(R8), X1
11748 MOVOU -32(R8)(DI*1), X2
11749 MOVOU -16(R8)(DI*1), X3
11750 MOVOU X0, (AX)
11751 MOVOU X1, 16(AX)
11752 MOVOU X2, -32(AX)(DI*1)
11753 MOVOU X3, -16(AX)(DI*1)
11754
11755memmove_end_copy_repeat_emit_encodeSnappyBlockAsm64K:
11756 MOVQ BX, AX
11757 JMP emit_literal_done_repeat_emit_encodeSnappyBlockAsm64K
11758
11759memmove_long_repeat_emit_encodeSnappyBlockAsm64K:
11760 LEAQ (AX)(DI*1), BX
11761
11762 // genMemMoveLong
11763 MOVOU (R8), X0
11764 MOVOU 16(R8), X1
11765 MOVOU -32(R8)(DI*1), X2
11766 MOVOU -16(R8)(DI*1), X3
11767 MOVQ DI, R10
11768 SHRQ $0x05, R10
11769 MOVQ AX, R9
11770 ANDL $0x0000001f, R9
11771 MOVQ $0x00000040, R11
11772 SUBQ R9, R11
11773 DECQ R10
11774 JA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32
11775 LEAQ -32(R8)(R11*1), R9
11776 LEAQ -32(AX)(R11*1), R12
11777
11778emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm64Klarge_big_loop_back:
11779 MOVOU (R9), X4
11780 MOVOU 16(R9), X5
11781 MOVOA X4, (R12)
11782 MOVOA X5, 16(R12)
11783 ADDQ $0x20, R12
11784 ADDQ $0x20, R9
11785 ADDQ $0x20, R11
11786 DECQ R10
11787 JNA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm64Klarge_big_loop_back
11788
11789emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32:
11790 MOVOU -32(R8)(R11*1), X4
11791 MOVOU -16(R8)(R11*1), X5
11792 MOVOA X4, -32(AX)(R11*1)
11793 MOVOA X5, -16(AX)(R11*1)
11794 ADDQ $0x20, R11
11795 CMPQ DI, R11
11796 JAE emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32
11797 MOVOU X0, (AX)
11798 MOVOU X1, 16(AX)
11799 MOVOU X2, -32(AX)(DI*1)
11800 MOVOU X3, -16(AX)(DI*1)
11801 MOVQ BX, AX
11802
11803emit_literal_done_repeat_emit_encodeSnappyBlockAsm64K:
11804 ADDL $0x05, CX
11805 MOVL CX, BX
11806 SUBL 16(SP), BX
11807 MOVQ src_len+32(FP), DI
11808 SUBL CX, DI
11809 LEAQ (DX)(CX*1), R8
11810 LEAQ (DX)(BX*1), BX
11811
11812 // matchLen
11813 XORL R10, R10
11814
11815matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm64K:
11816 CMPL DI, $0x10
11817 JB matchlen_match8_repeat_extend_encodeSnappyBlockAsm64K
11818 MOVQ (R8)(R10*1), R9
11819 MOVQ 8(R8)(R10*1), R11
11820 XORQ (BX)(R10*1), R9
11821 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm64K
11822 XORQ 8(BX)(R10*1), R11
11823 JNZ matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm64K
11824 LEAL -16(DI), DI
11825 LEAL 16(R10), R10
11826 JMP matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm64K
11827
11828matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm64K:
11829#ifdef GOAMD64_v3
11830 TZCNTQ R11, R11
11831
11832#else
11833 BSFQ R11, R11
11834
11835#endif
11836 SARQ $0x03, R11
11837 LEAL 8(R10)(R11*1), R10
11838 JMP repeat_extend_forward_end_encodeSnappyBlockAsm64K
11839
11840matchlen_match8_repeat_extend_encodeSnappyBlockAsm64K:
11841 CMPL DI, $0x08
11842 JB matchlen_match4_repeat_extend_encodeSnappyBlockAsm64K
11843 MOVQ (R8)(R10*1), R9
11844 XORQ (BX)(R10*1), R9
11845 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm64K
11846 LEAL -8(DI), DI
11847 LEAL 8(R10), R10
11848 JMP matchlen_match4_repeat_extend_encodeSnappyBlockAsm64K
11849
11850matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm64K:
11851#ifdef GOAMD64_v3
11852 TZCNTQ R9, R9
11853
11854#else
11855 BSFQ R9, R9
11856
11857#endif
11858 SARQ $0x03, R9
11859 LEAL (R10)(R9*1), R10
11860 JMP repeat_extend_forward_end_encodeSnappyBlockAsm64K
11861
11862matchlen_match4_repeat_extend_encodeSnappyBlockAsm64K:
11863 CMPL DI, $0x04
11864 JB matchlen_match2_repeat_extend_encodeSnappyBlockAsm64K
11865 MOVL (R8)(R10*1), R9
11866 CMPL (BX)(R10*1), R9
11867 JNE matchlen_match2_repeat_extend_encodeSnappyBlockAsm64K
11868 LEAL -4(DI), DI
11869 LEAL 4(R10), R10
11870
11871matchlen_match2_repeat_extend_encodeSnappyBlockAsm64K:
11872 CMPL DI, $0x01
11873 JE matchlen_match1_repeat_extend_encodeSnappyBlockAsm64K
11874 JB repeat_extend_forward_end_encodeSnappyBlockAsm64K
11875 MOVW (R8)(R10*1), R9
11876 CMPW (BX)(R10*1), R9
11877 JNE matchlen_match1_repeat_extend_encodeSnappyBlockAsm64K
11878 LEAL 2(R10), R10
11879 SUBL $0x02, DI
11880 JZ repeat_extend_forward_end_encodeSnappyBlockAsm64K
11881
11882matchlen_match1_repeat_extend_encodeSnappyBlockAsm64K:
11883 MOVB (R8)(R10*1), R9
11884 CMPB (BX)(R10*1), R9
11885 JNE repeat_extend_forward_end_encodeSnappyBlockAsm64K
11886 LEAL 1(R10), R10
11887
11888repeat_extend_forward_end_encodeSnappyBlockAsm64K:
11889 ADDL R10, CX
11890 MOVL CX, BX
11891 SUBL SI, BX
11892 MOVL 16(SP), SI
11893
11894 // emitCopy
11895two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm64K:
11896 CMPL BX, $0x40
11897 JBE two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm64K
11898 MOVB $0xee, (AX)
11899 MOVW SI, 1(AX)
11900 LEAL -60(BX), BX
11901 ADDQ $0x03, AX
11902 JMP two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm64K
11903
11904two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm64K:
11905 MOVL BX, DI
11906 SHLL $0x02, DI
11907 CMPL BX, $0x0c
11908 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm64K
11909 CMPL SI, $0x00000800
11910 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm64K
11911 LEAL -15(DI), DI
11912 MOVB SI, 1(AX)
11913 SHRL $0x08, SI
11914 SHLL $0x05, SI
11915 ORL SI, DI
11916 MOVB DI, (AX)
11917 ADDQ $0x02, AX
11918 JMP repeat_end_emit_encodeSnappyBlockAsm64K
11919
11920emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm64K:
11921 LEAL -2(DI), DI
11922 MOVB DI, (AX)
11923 MOVW SI, 1(AX)
11924 ADDQ $0x03, AX
11925
11926repeat_end_emit_encodeSnappyBlockAsm64K:
11927 MOVL CX, 12(SP)
11928 JMP search_loop_encodeSnappyBlockAsm64K
11929
11930no_repeat_found_encodeSnappyBlockAsm64K:
11931 CMPL (DX)(BX*1), SI
11932 JEQ candidate_match_encodeSnappyBlockAsm64K
11933 SHRQ $0x08, SI
11934 MOVL 24(SP)(R9*4), BX
11935 LEAL 2(CX), R8
11936 CMPL (DX)(DI*1), SI
11937 JEQ candidate2_match_encodeSnappyBlockAsm64K
11938 MOVL R8, 24(SP)(R9*4)
11939 SHRQ $0x08, SI
11940 CMPL (DX)(BX*1), SI
11941 JEQ candidate3_match_encodeSnappyBlockAsm64K
11942 MOVL 20(SP), CX
11943 JMP search_loop_encodeSnappyBlockAsm64K
11944
11945candidate3_match_encodeSnappyBlockAsm64K:
11946 ADDL $0x02, CX
11947 JMP candidate_match_encodeSnappyBlockAsm64K
11948
11949candidate2_match_encodeSnappyBlockAsm64K:
11950 MOVL R8, 24(SP)(R9*4)
11951 INCL CX
11952 MOVL DI, BX
11953
11954candidate_match_encodeSnappyBlockAsm64K:
11955 MOVL 12(SP), SI
11956 TESTL BX, BX
11957 JZ match_extend_back_end_encodeSnappyBlockAsm64K
11958
11959match_extend_back_loop_encodeSnappyBlockAsm64K:
11960 CMPL CX, SI
11961 JBE match_extend_back_end_encodeSnappyBlockAsm64K
11962 MOVB -1(DX)(BX*1), DI
11963 MOVB -1(DX)(CX*1), R8
11964 CMPB DI, R8
11965 JNE match_extend_back_end_encodeSnappyBlockAsm64K
11966 LEAL -1(CX), CX
11967 DECL BX
11968 JZ match_extend_back_end_encodeSnappyBlockAsm64K
11969 JMP match_extend_back_loop_encodeSnappyBlockAsm64K
11970
11971match_extend_back_end_encodeSnappyBlockAsm64K:
11972 MOVL CX, SI
11973 SUBL 12(SP), SI
11974 LEAQ 3(AX)(SI*1), SI
11975 CMPQ SI, (SP)
11976 JB match_dst_size_check_encodeSnappyBlockAsm64K
11977 MOVQ $0x00000000, ret+48(FP)
11978 RET
11979
11980match_dst_size_check_encodeSnappyBlockAsm64K:
11981 MOVL CX, SI
11982 MOVL 12(SP), DI
11983 CMPL DI, SI
11984 JEQ emit_literal_done_match_emit_encodeSnappyBlockAsm64K
11985 MOVL SI, R8
11986 MOVL SI, 12(SP)
11987 LEAQ (DX)(DI*1), SI
11988 SUBL DI, R8
11989 LEAL -1(R8), DI
11990 CMPL DI, $0x3c
11991 JB one_byte_match_emit_encodeSnappyBlockAsm64K
11992 CMPL DI, $0x00000100
11993 JB two_bytes_match_emit_encodeSnappyBlockAsm64K
11994 JB three_bytes_match_emit_encodeSnappyBlockAsm64K
11995
11996three_bytes_match_emit_encodeSnappyBlockAsm64K:
11997 MOVB $0xf4, (AX)
11998 MOVW DI, 1(AX)
11999 ADDQ $0x03, AX
12000 JMP memmove_long_match_emit_encodeSnappyBlockAsm64K
12001
12002two_bytes_match_emit_encodeSnappyBlockAsm64K:
12003 MOVB $0xf0, (AX)
12004 MOVB DI, 1(AX)
12005 ADDQ $0x02, AX
12006 CMPL DI, $0x40
12007 JB memmove_match_emit_encodeSnappyBlockAsm64K
12008 JMP memmove_long_match_emit_encodeSnappyBlockAsm64K
12009
12010one_byte_match_emit_encodeSnappyBlockAsm64K:
12011 SHLB $0x02, DI
12012 MOVB DI, (AX)
12013 ADDQ $0x01, AX
12014
12015memmove_match_emit_encodeSnappyBlockAsm64K:
12016 LEAQ (AX)(R8*1), DI
12017
12018 // genMemMoveShort
12019 CMPQ R8, $0x08
12020 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_8
12021 CMPQ R8, $0x10
12022 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_8through16
12023 CMPQ R8, $0x20
12024 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_17through32
12025 JMP emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_33through64
12026
12027emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_8:
12028 MOVQ (SI), R9
12029 MOVQ R9, (AX)
12030 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm64K
12031
12032emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_8through16:
12033 MOVQ (SI), R9
12034 MOVQ -8(SI)(R8*1), SI
12035 MOVQ R9, (AX)
12036 MOVQ SI, -8(AX)(R8*1)
12037 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm64K
12038
12039emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_17through32:
12040 MOVOU (SI), X0
12041 MOVOU -16(SI)(R8*1), X1
12042 MOVOU X0, (AX)
12043 MOVOU X1, -16(AX)(R8*1)
12044 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm64K
12045
12046emit_lit_memmove_match_emit_encodeSnappyBlockAsm64K_memmove_move_33through64:
12047 MOVOU (SI), X0
12048 MOVOU 16(SI), X1
12049 MOVOU -32(SI)(R8*1), X2
12050 MOVOU -16(SI)(R8*1), X3
12051 MOVOU X0, (AX)
12052 MOVOU X1, 16(AX)
12053 MOVOU X2, -32(AX)(R8*1)
12054 MOVOU X3, -16(AX)(R8*1)
12055
12056memmove_end_copy_match_emit_encodeSnappyBlockAsm64K:
12057 MOVQ DI, AX
12058 JMP emit_literal_done_match_emit_encodeSnappyBlockAsm64K
12059
12060memmove_long_match_emit_encodeSnappyBlockAsm64K:
12061 LEAQ (AX)(R8*1), DI
12062
12063 // genMemMoveLong
12064 MOVOU (SI), X0
12065 MOVOU 16(SI), X1
12066 MOVOU -32(SI)(R8*1), X2
12067 MOVOU -16(SI)(R8*1), X3
12068 MOVQ R8, R10
12069 SHRQ $0x05, R10
12070 MOVQ AX, R9
12071 ANDL $0x0000001f, R9
12072 MOVQ $0x00000040, R11
12073 SUBQ R9, R11
12074 DECQ R10
12075 JA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32
12076 LEAQ -32(SI)(R11*1), R9
12077 LEAQ -32(AX)(R11*1), R12
12078
12079emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm64Klarge_big_loop_back:
12080 MOVOU (R9), X4
12081 MOVOU 16(R9), X5
12082 MOVOA X4, (R12)
12083 MOVOA X5, 16(R12)
12084 ADDQ $0x20, R12
12085 ADDQ $0x20, R9
12086 ADDQ $0x20, R11
12087 DECQ R10
12088 JNA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm64Klarge_big_loop_back
12089
12090emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32:
12091 MOVOU -32(SI)(R11*1), X4
12092 MOVOU -16(SI)(R11*1), X5
12093 MOVOA X4, -32(AX)(R11*1)
12094 MOVOA X5, -16(AX)(R11*1)
12095 ADDQ $0x20, R11
12096 CMPQ R8, R11
12097 JAE emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32
12098 MOVOU X0, (AX)
12099 MOVOU X1, 16(AX)
12100 MOVOU X2, -32(AX)(R8*1)
12101 MOVOU X3, -16(AX)(R8*1)
12102 MOVQ DI, AX
12103
12104emit_literal_done_match_emit_encodeSnappyBlockAsm64K:
12105match_nolit_loop_encodeSnappyBlockAsm64K:
12106 MOVL CX, SI
12107 SUBL BX, SI
12108 MOVL SI, 16(SP)
12109 ADDL $0x04, CX
12110 ADDL $0x04, BX
12111 MOVQ src_len+32(FP), SI
12112 SUBL CX, SI
12113 LEAQ (DX)(CX*1), DI
12114 LEAQ (DX)(BX*1), BX
12115
12116 // matchLen
12117 XORL R9, R9
12118
12119matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm64K:
12120 CMPL SI, $0x10
12121 JB matchlen_match8_match_nolit_encodeSnappyBlockAsm64K
12122 MOVQ (DI)(R9*1), R8
12123 MOVQ 8(DI)(R9*1), R10
12124 XORQ (BX)(R9*1), R8
12125 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm64K
12126 XORQ 8(BX)(R9*1), R10
12127 JNZ matchlen_bsf_16match_nolit_encodeSnappyBlockAsm64K
12128 LEAL -16(SI), SI
12129 LEAL 16(R9), R9
12130 JMP matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm64K
12131
12132matchlen_bsf_16match_nolit_encodeSnappyBlockAsm64K:
12133#ifdef GOAMD64_v3
12134 TZCNTQ R10, R10
12135
12136#else
12137 BSFQ R10, R10
12138
12139#endif
12140 SARQ $0x03, R10
12141 LEAL 8(R9)(R10*1), R9
12142 JMP match_nolit_end_encodeSnappyBlockAsm64K
12143
12144matchlen_match8_match_nolit_encodeSnappyBlockAsm64K:
12145 CMPL SI, $0x08
12146 JB matchlen_match4_match_nolit_encodeSnappyBlockAsm64K
12147 MOVQ (DI)(R9*1), R8
12148 XORQ (BX)(R9*1), R8
12149 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm64K
12150 LEAL -8(SI), SI
12151 LEAL 8(R9), R9
12152 JMP matchlen_match4_match_nolit_encodeSnappyBlockAsm64K
12153
12154matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm64K:
12155#ifdef GOAMD64_v3
12156 TZCNTQ R8, R8
12157
12158#else
12159 BSFQ R8, R8
12160
12161#endif
12162 SARQ $0x03, R8
12163 LEAL (R9)(R8*1), R9
12164 JMP match_nolit_end_encodeSnappyBlockAsm64K
12165
12166matchlen_match4_match_nolit_encodeSnappyBlockAsm64K:
12167 CMPL SI, $0x04
12168 JB matchlen_match2_match_nolit_encodeSnappyBlockAsm64K
12169 MOVL (DI)(R9*1), R8
12170 CMPL (BX)(R9*1), R8
12171 JNE matchlen_match2_match_nolit_encodeSnappyBlockAsm64K
12172 LEAL -4(SI), SI
12173 LEAL 4(R9), R9
12174
12175matchlen_match2_match_nolit_encodeSnappyBlockAsm64K:
12176 CMPL SI, $0x01
12177 JE matchlen_match1_match_nolit_encodeSnappyBlockAsm64K
12178 JB match_nolit_end_encodeSnappyBlockAsm64K
12179 MOVW (DI)(R9*1), R8
12180 CMPW (BX)(R9*1), R8
12181 JNE matchlen_match1_match_nolit_encodeSnappyBlockAsm64K
12182 LEAL 2(R9), R9
12183 SUBL $0x02, SI
12184 JZ match_nolit_end_encodeSnappyBlockAsm64K
12185
12186matchlen_match1_match_nolit_encodeSnappyBlockAsm64K:
12187 MOVB (DI)(R9*1), R8
12188 CMPB (BX)(R9*1), R8
12189 JNE match_nolit_end_encodeSnappyBlockAsm64K
12190 LEAL 1(R9), R9
12191
12192match_nolit_end_encodeSnappyBlockAsm64K:
12193 ADDL R9, CX
12194 MOVL 16(SP), BX
12195 ADDL $0x04, R9
12196 MOVL CX, 12(SP)
12197
12198 // emitCopy
12199two_byte_offset_match_nolit_encodeSnappyBlockAsm64K:
12200 CMPL R9, $0x40
12201 JBE two_byte_offset_short_match_nolit_encodeSnappyBlockAsm64K
12202 MOVB $0xee, (AX)
12203 MOVW BX, 1(AX)
12204 LEAL -60(R9), R9
12205 ADDQ $0x03, AX
12206 JMP two_byte_offset_match_nolit_encodeSnappyBlockAsm64K
12207
12208two_byte_offset_short_match_nolit_encodeSnappyBlockAsm64K:
12209 MOVL R9, SI
12210 SHLL $0x02, SI
12211 CMPL R9, $0x0c
12212 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm64K
12213 CMPL BX, $0x00000800
12214 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm64K
12215 LEAL -15(SI), SI
12216 MOVB BL, 1(AX)
12217 SHRL $0x08, BX
12218 SHLL $0x05, BX
12219 ORL BX, SI
12220 MOVB SI, (AX)
12221 ADDQ $0x02, AX
12222 JMP match_nolit_emitcopy_end_encodeSnappyBlockAsm64K
12223
12224emit_copy_three_match_nolit_encodeSnappyBlockAsm64K:
12225 LEAL -2(SI), SI
12226 MOVB SI, (AX)
12227 MOVW BX, 1(AX)
12228 ADDQ $0x03, AX
12229
12230match_nolit_emitcopy_end_encodeSnappyBlockAsm64K:
12231 CMPL CX, 8(SP)
12232 JAE emit_remainder_encodeSnappyBlockAsm64K
12233 MOVQ -2(DX)(CX*1), SI
12234 CMPQ AX, (SP)
12235 JB match_nolit_dst_ok_encodeSnappyBlockAsm64K
12236 MOVQ $0x00000000, ret+48(FP)
12237 RET
12238
12239match_nolit_dst_ok_encodeSnappyBlockAsm64K:
12240 MOVQ $0x0000cf1bbcdcbf9b, R8
12241 MOVQ SI, DI
12242 SHRQ $0x10, SI
12243 MOVQ SI, BX
12244 SHLQ $0x10, DI
12245 IMULQ R8, DI
12246 SHRQ $0x32, DI
12247 SHLQ $0x10, BX
12248 IMULQ R8, BX
12249 SHRQ $0x32, BX
12250 LEAL -2(CX), R8
12251 LEAQ 24(SP)(BX*4), R9
12252 MOVL (R9), BX
12253 MOVL R8, 24(SP)(DI*4)
12254 MOVL CX, (R9)
12255 CMPL (DX)(BX*1), SI
12256 JEQ match_nolit_loop_encodeSnappyBlockAsm64K
12257 INCL CX
12258 JMP search_loop_encodeSnappyBlockAsm64K
12259
12260emit_remainder_encodeSnappyBlockAsm64K:
12261 MOVQ src_len+32(FP), CX
12262 SUBL 12(SP), CX
12263 LEAQ 3(AX)(CX*1), CX
12264 CMPQ CX, (SP)
12265 JB emit_remainder_ok_encodeSnappyBlockAsm64K
12266 MOVQ $0x00000000, ret+48(FP)
12267 RET
12268
12269emit_remainder_ok_encodeSnappyBlockAsm64K:
12270 MOVQ src_len+32(FP), CX
12271 MOVL 12(SP), BX
12272 CMPL BX, CX
12273 JEQ emit_literal_done_emit_remainder_encodeSnappyBlockAsm64K
12274 MOVL CX, SI
12275 MOVL CX, 12(SP)
12276 LEAQ (DX)(BX*1), CX
12277 SUBL BX, SI
12278 LEAL -1(SI), DX
12279 CMPL DX, $0x3c
12280 JB one_byte_emit_remainder_encodeSnappyBlockAsm64K
12281 CMPL DX, $0x00000100
12282 JB two_bytes_emit_remainder_encodeSnappyBlockAsm64K
12283 JB three_bytes_emit_remainder_encodeSnappyBlockAsm64K
12284
12285three_bytes_emit_remainder_encodeSnappyBlockAsm64K:
12286 MOVB $0xf4, (AX)
12287 MOVW DX, 1(AX)
12288 ADDQ $0x03, AX
12289 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm64K
12290
12291two_bytes_emit_remainder_encodeSnappyBlockAsm64K:
12292 MOVB $0xf0, (AX)
12293 MOVB DL, 1(AX)
12294 ADDQ $0x02, AX
12295 CMPL DX, $0x40
12296 JB memmove_emit_remainder_encodeSnappyBlockAsm64K
12297 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm64K
12298
12299one_byte_emit_remainder_encodeSnappyBlockAsm64K:
12300 SHLB $0x02, DL
12301 MOVB DL, (AX)
12302 ADDQ $0x01, AX
12303
12304memmove_emit_remainder_encodeSnappyBlockAsm64K:
12305 LEAQ (AX)(SI*1), DX
12306 MOVL SI, BX
12307
12308 // genMemMoveShort
12309 CMPQ BX, $0x03
12310 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_1or2
12311 JE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_3
12312 CMPQ BX, $0x08
12313 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_4through7
12314 CMPQ BX, $0x10
12315 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_8through16
12316 CMPQ BX, $0x20
12317 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_17through32
12318 JMP emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_33through64
12319
12320emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_1or2:
12321 MOVB (CX), SI
12322 MOVB -1(CX)(BX*1), CL
12323 MOVB SI, (AX)
12324 MOVB CL, -1(AX)(BX*1)
12325 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm64K
12326
12327emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_3:
12328 MOVW (CX), SI
12329 MOVB 2(CX), CL
12330 MOVW SI, (AX)
12331 MOVB CL, 2(AX)
12332 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm64K
12333
12334emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_4through7:
12335 MOVL (CX), SI
12336 MOVL -4(CX)(BX*1), CX
12337 MOVL SI, (AX)
12338 MOVL CX, -4(AX)(BX*1)
12339 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm64K
12340
12341emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_8through16:
12342 MOVQ (CX), SI
12343 MOVQ -8(CX)(BX*1), CX
12344 MOVQ SI, (AX)
12345 MOVQ CX, -8(AX)(BX*1)
12346 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm64K
12347
12348emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_17through32:
12349 MOVOU (CX), X0
12350 MOVOU -16(CX)(BX*1), X1
12351 MOVOU X0, (AX)
12352 MOVOU X1, -16(AX)(BX*1)
12353 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm64K
12354
12355emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm64K_memmove_move_33through64:
12356 MOVOU (CX), X0
12357 MOVOU 16(CX), X1
12358 MOVOU -32(CX)(BX*1), X2
12359 MOVOU -16(CX)(BX*1), X3
12360 MOVOU X0, (AX)
12361 MOVOU X1, 16(AX)
12362 MOVOU X2, -32(AX)(BX*1)
12363 MOVOU X3, -16(AX)(BX*1)
12364
12365memmove_end_copy_emit_remainder_encodeSnappyBlockAsm64K:
12366 MOVQ DX, AX
12367 JMP emit_literal_done_emit_remainder_encodeSnappyBlockAsm64K
12368
12369memmove_long_emit_remainder_encodeSnappyBlockAsm64K:
12370 LEAQ (AX)(SI*1), DX
12371 MOVL SI, BX
12372
12373 // genMemMoveLong
12374 MOVOU (CX), X0
12375 MOVOU 16(CX), X1
12376 MOVOU -32(CX)(BX*1), X2
12377 MOVOU -16(CX)(BX*1), X3
12378 MOVQ BX, DI
12379 SHRQ $0x05, DI
12380 MOVQ AX, SI
12381 ANDL $0x0000001f, SI
12382 MOVQ $0x00000040, R8
12383 SUBQ SI, R8
12384 DECQ DI
12385 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32
12386 LEAQ -32(CX)(R8*1), SI
12387 LEAQ -32(AX)(R8*1), R9
12388
12389emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm64Klarge_big_loop_back:
12390 MOVOU (SI), X4
12391 MOVOU 16(SI), X5
12392 MOVOA X4, (R9)
12393 MOVOA X5, 16(R9)
12394 ADDQ $0x20, R9
12395 ADDQ $0x20, SI
12396 ADDQ $0x20, R8
12397 DECQ DI
12398 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm64Klarge_big_loop_back
12399
12400emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32:
12401 MOVOU -32(CX)(R8*1), X4
12402 MOVOU -16(CX)(R8*1), X5
12403 MOVOA X4, -32(AX)(R8*1)
12404 MOVOA X5, -16(AX)(R8*1)
12405 ADDQ $0x20, R8
12406 CMPQ BX, R8
12407 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm64Klarge_forward_sse_loop_32
12408 MOVOU X0, (AX)
12409 MOVOU X1, 16(AX)
12410 MOVOU X2, -32(AX)(BX*1)
12411 MOVOU X3, -16(AX)(BX*1)
12412 MOVQ DX, AX
12413
12414emit_literal_done_emit_remainder_encodeSnappyBlockAsm64K:
12415 MOVQ dst_base+0(FP), CX
12416 SUBQ CX, AX
12417 MOVQ AX, ret+48(FP)
12418 RET
12419
12420// func encodeSnappyBlockAsm12B(dst []byte, src []byte) int
12421// Requires: BMI, SSE2
12422TEXT ·encodeSnappyBlockAsm12B(SB), $16408-56
12423 MOVQ dst_base+0(FP), AX
12424 MOVQ $0x00000080, CX
12425 LEAQ 24(SP), DX
12426 PXOR X0, X0
12427
12428zero_loop_encodeSnappyBlockAsm12B:
12429 MOVOU X0, (DX)
12430 MOVOU X0, 16(DX)
12431 MOVOU X0, 32(DX)
12432 MOVOU X0, 48(DX)
12433 MOVOU X0, 64(DX)
12434 MOVOU X0, 80(DX)
12435 MOVOU X0, 96(DX)
12436 MOVOU X0, 112(DX)
12437 ADDQ $0x80, DX
12438 DECQ CX
12439 JNZ zero_loop_encodeSnappyBlockAsm12B
12440 MOVL $0x00000000, 12(SP)
12441 MOVQ src_len+32(FP), CX
12442 LEAQ -9(CX), DX
12443 LEAQ -8(CX), BX
12444 MOVL BX, 8(SP)
12445 SHRQ $0x05, CX
12446 SUBL CX, DX
12447 LEAQ (AX)(DX*1), DX
12448 MOVQ DX, (SP)
12449 MOVL $0x00000001, CX
12450 MOVL CX, 16(SP)
12451 MOVQ src_base+24(FP), DX
12452
12453search_loop_encodeSnappyBlockAsm12B:
12454 MOVL CX, BX
12455 SUBL 12(SP), BX
12456 SHRL $0x05, BX
12457 LEAL 4(CX)(BX*1), BX
12458 CMPL BX, 8(SP)
12459 JAE emit_remainder_encodeSnappyBlockAsm12B
12460 MOVQ (DX)(CX*1), SI
12461 MOVL BX, 20(SP)
12462 MOVQ $0x000000cf1bbcdcbb, R8
12463 MOVQ SI, R9
12464 MOVQ SI, R10
12465 SHRQ $0x08, R10
12466 SHLQ $0x18, R9
12467 IMULQ R8, R9
12468 SHRQ $0x34, R9
12469 SHLQ $0x18, R10
12470 IMULQ R8, R10
12471 SHRQ $0x34, R10
12472 MOVL 24(SP)(R9*4), BX
12473 MOVL 24(SP)(R10*4), DI
12474 MOVL CX, 24(SP)(R9*4)
12475 LEAL 1(CX), R9
12476 MOVL R9, 24(SP)(R10*4)
12477 MOVQ SI, R9
12478 SHRQ $0x10, R9
12479 SHLQ $0x18, R9
12480 IMULQ R8, R9
12481 SHRQ $0x34, R9
12482 MOVL CX, R8
12483 SUBL 16(SP), R8
12484 MOVL 1(DX)(R8*1), R10
12485 MOVQ SI, R8
12486 SHRQ $0x08, R8
12487 CMPL R8, R10
12488 JNE no_repeat_found_encodeSnappyBlockAsm12B
12489 LEAL 1(CX), SI
12490 MOVL 12(SP), BX
12491 MOVL SI, DI
12492 SUBL 16(SP), DI
12493 JZ repeat_extend_back_end_encodeSnappyBlockAsm12B
12494
12495repeat_extend_back_loop_encodeSnappyBlockAsm12B:
12496 CMPL SI, BX
12497 JBE repeat_extend_back_end_encodeSnappyBlockAsm12B
12498 MOVB -1(DX)(DI*1), R8
12499 MOVB -1(DX)(SI*1), R9
12500 CMPB R8, R9
12501 JNE repeat_extend_back_end_encodeSnappyBlockAsm12B
12502 LEAL -1(SI), SI
12503 DECL DI
12504 JNZ repeat_extend_back_loop_encodeSnappyBlockAsm12B
12505
12506repeat_extend_back_end_encodeSnappyBlockAsm12B:
12507 MOVL 12(SP), BX
12508 CMPL BX, SI
12509 JEQ emit_literal_done_repeat_emit_encodeSnappyBlockAsm12B
12510 MOVL SI, DI
12511 MOVL SI, 12(SP)
12512 LEAQ (DX)(BX*1), R8
12513 SUBL BX, DI
12514 LEAL -1(DI), BX
12515 CMPL BX, $0x3c
12516 JB one_byte_repeat_emit_encodeSnappyBlockAsm12B
12517 CMPL BX, $0x00000100
12518 JB two_bytes_repeat_emit_encodeSnappyBlockAsm12B
12519 JB three_bytes_repeat_emit_encodeSnappyBlockAsm12B
12520
12521three_bytes_repeat_emit_encodeSnappyBlockAsm12B:
12522 MOVB $0xf4, (AX)
12523 MOVW BX, 1(AX)
12524 ADDQ $0x03, AX
12525 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm12B
12526
12527two_bytes_repeat_emit_encodeSnappyBlockAsm12B:
12528 MOVB $0xf0, (AX)
12529 MOVB BL, 1(AX)
12530 ADDQ $0x02, AX
12531 CMPL BX, $0x40
12532 JB memmove_repeat_emit_encodeSnappyBlockAsm12B
12533 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm12B
12534
12535one_byte_repeat_emit_encodeSnappyBlockAsm12B:
12536 SHLB $0x02, BL
12537 MOVB BL, (AX)
12538 ADDQ $0x01, AX
12539
12540memmove_repeat_emit_encodeSnappyBlockAsm12B:
12541 LEAQ (AX)(DI*1), BX
12542
12543 // genMemMoveShort
12544 CMPQ DI, $0x08
12545 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_8
12546 CMPQ DI, $0x10
12547 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_8through16
12548 CMPQ DI, $0x20
12549 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_17through32
12550 JMP emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_33through64
12551
12552emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_8:
12553 MOVQ (R8), R9
12554 MOVQ R9, (AX)
12555 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm12B
12556
12557emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_8through16:
12558 MOVQ (R8), R9
12559 MOVQ -8(R8)(DI*1), R8
12560 MOVQ R9, (AX)
12561 MOVQ R8, -8(AX)(DI*1)
12562 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm12B
12563
12564emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_17through32:
12565 MOVOU (R8), X0
12566 MOVOU -16(R8)(DI*1), X1
12567 MOVOU X0, (AX)
12568 MOVOU X1, -16(AX)(DI*1)
12569 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm12B
12570
12571emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm12B_memmove_move_33through64:
12572 MOVOU (R8), X0
12573 MOVOU 16(R8), X1
12574 MOVOU -32(R8)(DI*1), X2
12575 MOVOU -16(R8)(DI*1), X3
12576 MOVOU X0, (AX)
12577 MOVOU X1, 16(AX)
12578 MOVOU X2, -32(AX)(DI*1)
12579 MOVOU X3, -16(AX)(DI*1)
12580
12581memmove_end_copy_repeat_emit_encodeSnappyBlockAsm12B:
12582 MOVQ BX, AX
12583 JMP emit_literal_done_repeat_emit_encodeSnappyBlockAsm12B
12584
12585memmove_long_repeat_emit_encodeSnappyBlockAsm12B:
12586 LEAQ (AX)(DI*1), BX
12587
12588 // genMemMoveLong
12589 MOVOU (R8), X0
12590 MOVOU 16(R8), X1
12591 MOVOU -32(R8)(DI*1), X2
12592 MOVOU -16(R8)(DI*1), X3
12593 MOVQ DI, R10
12594 SHRQ $0x05, R10
12595 MOVQ AX, R9
12596 ANDL $0x0000001f, R9
12597 MOVQ $0x00000040, R11
12598 SUBQ R9, R11
12599 DECQ R10
12600 JA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32
12601 LEAQ -32(R8)(R11*1), R9
12602 LEAQ -32(AX)(R11*1), R12
12603
12604emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm12Blarge_big_loop_back:
12605 MOVOU (R9), X4
12606 MOVOU 16(R9), X5
12607 MOVOA X4, (R12)
12608 MOVOA X5, 16(R12)
12609 ADDQ $0x20, R12
12610 ADDQ $0x20, R9
12611 ADDQ $0x20, R11
12612 DECQ R10
12613 JNA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm12Blarge_big_loop_back
12614
12615emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32:
12616 MOVOU -32(R8)(R11*1), X4
12617 MOVOU -16(R8)(R11*1), X5
12618 MOVOA X4, -32(AX)(R11*1)
12619 MOVOA X5, -16(AX)(R11*1)
12620 ADDQ $0x20, R11
12621 CMPQ DI, R11
12622 JAE emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32
12623 MOVOU X0, (AX)
12624 MOVOU X1, 16(AX)
12625 MOVOU X2, -32(AX)(DI*1)
12626 MOVOU X3, -16(AX)(DI*1)
12627 MOVQ BX, AX
12628
12629emit_literal_done_repeat_emit_encodeSnappyBlockAsm12B:
12630 ADDL $0x05, CX
12631 MOVL CX, BX
12632 SUBL 16(SP), BX
12633 MOVQ src_len+32(FP), DI
12634 SUBL CX, DI
12635 LEAQ (DX)(CX*1), R8
12636 LEAQ (DX)(BX*1), BX
12637
12638 // matchLen
12639 XORL R10, R10
12640
12641matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm12B:
12642 CMPL DI, $0x10
12643 JB matchlen_match8_repeat_extend_encodeSnappyBlockAsm12B
12644 MOVQ (R8)(R10*1), R9
12645 MOVQ 8(R8)(R10*1), R11
12646 XORQ (BX)(R10*1), R9
12647 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm12B
12648 XORQ 8(BX)(R10*1), R11
12649 JNZ matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm12B
12650 LEAL -16(DI), DI
12651 LEAL 16(R10), R10
12652 JMP matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm12B
12653
12654matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm12B:
12655#ifdef GOAMD64_v3
12656 TZCNTQ R11, R11
12657
12658#else
12659 BSFQ R11, R11
12660
12661#endif
12662 SARQ $0x03, R11
12663 LEAL 8(R10)(R11*1), R10
12664 JMP repeat_extend_forward_end_encodeSnappyBlockAsm12B
12665
12666matchlen_match8_repeat_extend_encodeSnappyBlockAsm12B:
12667 CMPL DI, $0x08
12668 JB matchlen_match4_repeat_extend_encodeSnappyBlockAsm12B
12669 MOVQ (R8)(R10*1), R9
12670 XORQ (BX)(R10*1), R9
12671 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm12B
12672 LEAL -8(DI), DI
12673 LEAL 8(R10), R10
12674 JMP matchlen_match4_repeat_extend_encodeSnappyBlockAsm12B
12675
12676matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm12B:
12677#ifdef GOAMD64_v3
12678 TZCNTQ R9, R9
12679
12680#else
12681 BSFQ R9, R9
12682
12683#endif
12684 SARQ $0x03, R9
12685 LEAL (R10)(R9*1), R10
12686 JMP repeat_extend_forward_end_encodeSnappyBlockAsm12B
12687
12688matchlen_match4_repeat_extend_encodeSnappyBlockAsm12B:
12689 CMPL DI, $0x04
12690 JB matchlen_match2_repeat_extend_encodeSnappyBlockAsm12B
12691 MOVL (R8)(R10*1), R9
12692 CMPL (BX)(R10*1), R9
12693 JNE matchlen_match2_repeat_extend_encodeSnappyBlockAsm12B
12694 LEAL -4(DI), DI
12695 LEAL 4(R10), R10
12696
12697matchlen_match2_repeat_extend_encodeSnappyBlockAsm12B:
12698 CMPL DI, $0x01
12699 JE matchlen_match1_repeat_extend_encodeSnappyBlockAsm12B
12700 JB repeat_extend_forward_end_encodeSnappyBlockAsm12B
12701 MOVW (R8)(R10*1), R9
12702 CMPW (BX)(R10*1), R9
12703 JNE matchlen_match1_repeat_extend_encodeSnappyBlockAsm12B
12704 LEAL 2(R10), R10
12705 SUBL $0x02, DI
12706 JZ repeat_extend_forward_end_encodeSnappyBlockAsm12B
12707
12708matchlen_match1_repeat_extend_encodeSnappyBlockAsm12B:
12709 MOVB (R8)(R10*1), R9
12710 CMPB (BX)(R10*1), R9
12711 JNE repeat_extend_forward_end_encodeSnappyBlockAsm12B
12712 LEAL 1(R10), R10
12713
12714repeat_extend_forward_end_encodeSnappyBlockAsm12B:
12715 ADDL R10, CX
12716 MOVL CX, BX
12717 SUBL SI, BX
12718 MOVL 16(SP), SI
12719
12720 // emitCopy
12721two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm12B:
12722 CMPL BX, $0x40
12723 JBE two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm12B
12724 MOVB $0xee, (AX)
12725 MOVW SI, 1(AX)
12726 LEAL -60(BX), BX
12727 ADDQ $0x03, AX
12728 JMP two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm12B
12729
12730two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm12B:
12731 MOVL BX, DI
12732 SHLL $0x02, DI
12733 CMPL BX, $0x0c
12734 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm12B
12735 CMPL SI, $0x00000800
12736 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm12B
12737 LEAL -15(DI), DI
12738 MOVB SI, 1(AX)
12739 SHRL $0x08, SI
12740 SHLL $0x05, SI
12741 ORL SI, DI
12742 MOVB DI, (AX)
12743 ADDQ $0x02, AX
12744 JMP repeat_end_emit_encodeSnappyBlockAsm12B
12745
12746emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm12B:
12747 LEAL -2(DI), DI
12748 MOVB DI, (AX)
12749 MOVW SI, 1(AX)
12750 ADDQ $0x03, AX
12751
12752repeat_end_emit_encodeSnappyBlockAsm12B:
12753 MOVL CX, 12(SP)
12754 JMP search_loop_encodeSnappyBlockAsm12B
12755
12756no_repeat_found_encodeSnappyBlockAsm12B:
12757 CMPL (DX)(BX*1), SI
12758 JEQ candidate_match_encodeSnappyBlockAsm12B
12759 SHRQ $0x08, SI
12760 MOVL 24(SP)(R9*4), BX
12761 LEAL 2(CX), R8
12762 CMPL (DX)(DI*1), SI
12763 JEQ candidate2_match_encodeSnappyBlockAsm12B
12764 MOVL R8, 24(SP)(R9*4)
12765 SHRQ $0x08, SI
12766 CMPL (DX)(BX*1), SI
12767 JEQ candidate3_match_encodeSnappyBlockAsm12B
12768 MOVL 20(SP), CX
12769 JMP search_loop_encodeSnappyBlockAsm12B
12770
12771candidate3_match_encodeSnappyBlockAsm12B:
12772 ADDL $0x02, CX
12773 JMP candidate_match_encodeSnappyBlockAsm12B
12774
12775candidate2_match_encodeSnappyBlockAsm12B:
12776 MOVL R8, 24(SP)(R9*4)
12777 INCL CX
12778 MOVL DI, BX
12779
12780candidate_match_encodeSnappyBlockAsm12B:
12781 MOVL 12(SP), SI
12782 TESTL BX, BX
12783 JZ match_extend_back_end_encodeSnappyBlockAsm12B
12784
12785match_extend_back_loop_encodeSnappyBlockAsm12B:
12786 CMPL CX, SI
12787 JBE match_extend_back_end_encodeSnappyBlockAsm12B
12788 MOVB -1(DX)(BX*1), DI
12789 MOVB -1(DX)(CX*1), R8
12790 CMPB DI, R8
12791 JNE match_extend_back_end_encodeSnappyBlockAsm12B
12792 LEAL -1(CX), CX
12793 DECL BX
12794 JZ match_extend_back_end_encodeSnappyBlockAsm12B
12795 JMP match_extend_back_loop_encodeSnappyBlockAsm12B
12796
12797match_extend_back_end_encodeSnappyBlockAsm12B:
12798 MOVL CX, SI
12799 SUBL 12(SP), SI
12800 LEAQ 3(AX)(SI*1), SI
12801 CMPQ SI, (SP)
12802 JB match_dst_size_check_encodeSnappyBlockAsm12B
12803 MOVQ $0x00000000, ret+48(FP)
12804 RET
12805
12806match_dst_size_check_encodeSnappyBlockAsm12B:
12807 MOVL CX, SI
12808 MOVL 12(SP), DI
12809 CMPL DI, SI
12810 JEQ emit_literal_done_match_emit_encodeSnappyBlockAsm12B
12811 MOVL SI, R8
12812 MOVL SI, 12(SP)
12813 LEAQ (DX)(DI*1), SI
12814 SUBL DI, R8
12815 LEAL -1(R8), DI
12816 CMPL DI, $0x3c
12817 JB one_byte_match_emit_encodeSnappyBlockAsm12B
12818 CMPL DI, $0x00000100
12819 JB two_bytes_match_emit_encodeSnappyBlockAsm12B
12820 JB three_bytes_match_emit_encodeSnappyBlockAsm12B
12821
12822three_bytes_match_emit_encodeSnappyBlockAsm12B:
12823 MOVB $0xf4, (AX)
12824 MOVW DI, 1(AX)
12825 ADDQ $0x03, AX
12826 JMP memmove_long_match_emit_encodeSnappyBlockAsm12B
12827
12828two_bytes_match_emit_encodeSnappyBlockAsm12B:
12829 MOVB $0xf0, (AX)
12830 MOVB DI, 1(AX)
12831 ADDQ $0x02, AX
12832 CMPL DI, $0x40
12833 JB memmove_match_emit_encodeSnappyBlockAsm12B
12834 JMP memmove_long_match_emit_encodeSnappyBlockAsm12B
12835
12836one_byte_match_emit_encodeSnappyBlockAsm12B:
12837 SHLB $0x02, DI
12838 MOVB DI, (AX)
12839 ADDQ $0x01, AX
12840
12841memmove_match_emit_encodeSnappyBlockAsm12B:
12842 LEAQ (AX)(R8*1), DI
12843
12844 // genMemMoveShort
12845 CMPQ R8, $0x08
12846 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_8
12847 CMPQ R8, $0x10
12848 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_8through16
12849 CMPQ R8, $0x20
12850 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_17through32
12851 JMP emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_33through64
12852
12853emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_8:
12854 MOVQ (SI), R9
12855 MOVQ R9, (AX)
12856 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm12B
12857
12858emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_8through16:
12859 MOVQ (SI), R9
12860 MOVQ -8(SI)(R8*1), SI
12861 MOVQ R9, (AX)
12862 MOVQ SI, -8(AX)(R8*1)
12863 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm12B
12864
12865emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_17through32:
12866 MOVOU (SI), X0
12867 MOVOU -16(SI)(R8*1), X1
12868 MOVOU X0, (AX)
12869 MOVOU X1, -16(AX)(R8*1)
12870 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm12B
12871
12872emit_lit_memmove_match_emit_encodeSnappyBlockAsm12B_memmove_move_33through64:
12873 MOVOU (SI), X0
12874 MOVOU 16(SI), X1
12875 MOVOU -32(SI)(R8*1), X2
12876 MOVOU -16(SI)(R8*1), X3
12877 MOVOU X0, (AX)
12878 MOVOU X1, 16(AX)
12879 MOVOU X2, -32(AX)(R8*1)
12880 MOVOU X3, -16(AX)(R8*1)
12881
12882memmove_end_copy_match_emit_encodeSnappyBlockAsm12B:
12883 MOVQ DI, AX
12884 JMP emit_literal_done_match_emit_encodeSnappyBlockAsm12B
12885
12886memmove_long_match_emit_encodeSnappyBlockAsm12B:
12887 LEAQ (AX)(R8*1), DI
12888
12889 // genMemMoveLong
12890 MOVOU (SI), X0
12891 MOVOU 16(SI), X1
12892 MOVOU -32(SI)(R8*1), X2
12893 MOVOU -16(SI)(R8*1), X3
12894 MOVQ R8, R10
12895 SHRQ $0x05, R10
12896 MOVQ AX, R9
12897 ANDL $0x0000001f, R9
12898 MOVQ $0x00000040, R11
12899 SUBQ R9, R11
12900 DECQ R10
12901 JA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32
12902 LEAQ -32(SI)(R11*1), R9
12903 LEAQ -32(AX)(R11*1), R12
12904
12905emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm12Blarge_big_loop_back:
12906 MOVOU (R9), X4
12907 MOVOU 16(R9), X5
12908 MOVOA X4, (R12)
12909 MOVOA X5, 16(R12)
12910 ADDQ $0x20, R12
12911 ADDQ $0x20, R9
12912 ADDQ $0x20, R11
12913 DECQ R10
12914 JNA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm12Blarge_big_loop_back
12915
12916emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32:
12917 MOVOU -32(SI)(R11*1), X4
12918 MOVOU -16(SI)(R11*1), X5
12919 MOVOA X4, -32(AX)(R11*1)
12920 MOVOA X5, -16(AX)(R11*1)
12921 ADDQ $0x20, R11
12922 CMPQ R8, R11
12923 JAE emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32
12924 MOVOU X0, (AX)
12925 MOVOU X1, 16(AX)
12926 MOVOU X2, -32(AX)(R8*1)
12927 MOVOU X3, -16(AX)(R8*1)
12928 MOVQ DI, AX
12929
12930emit_literal_done_match_emit_encodeSnappyBlockAsm12B:
12931match_nolit_loop_encodeSnappyBlockAsm12B:
12932 MOVL CX, SI
12933 SUBL BX, SI
12934 MOVL SI, 16(SP)
12935 ADDL $0x04, CX
12936 ADDL $0x04, BX
12937 MOVQ src_len+32(FP), SI
12938 SUBL CX, SI
12939 LEAQ (DX)(CX*1), DI
12940 LEAQ (DX)(BX*1), BX
12941
12942 // matchLen
12943 XORL R9, R9
12944
12945matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm12B:
12946 CMPL SI, $0x10
12947 JB matchlen_match8_match_nolit_encodeSnappyBlockAsm12B
12948 MOVQ (DI)(R9*1), R8
12949 MOVQ 8(DI)(R9*1), R10
12950 XORQ (BX)(R9*1), R8
12951 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm12B
12952 XORQ 8(BX)(R9*1), R10
12953 JNZ matchlen_bsf_16match_nolit_encodeSnappyBlockAsm12B
12954 LEAL -16(SI), SI
12955 LEAL 16(R9), R9
12956 JMP matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm12B
12957
12958matchlen_bsf_16match_nolit_encodeSnappyBlockAsm12B:
12959#ifdef GOAMD64_v3
12960 TZCNTQ R10, R10
12961
12962#else
12963 BSFQ R10, R10
12964
12965#endif
12966 SARQ $0x03, R10
12967 LEAL 8(R9)(R10*1), R9
12968 JMP match_nolit_end_encodeSnappyBlockAsm12B
12969
12970matchlen_match8_match_nolit_encodeSnappyBlockAsm12B:
12971 CMPL SI, $0x08
12972 JB matchlen_match4_match_nolit_encodeSnappyBlockAsm12B
12973 MOVQ (DI)(R9*1), R8
12974 XORQ (BX)(R9*1), R8
12975 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm12B
12976 LEAL -8(SI), SI
12977 LEAL 8(R9), R9
12978 JMP matchlen_match4_match_nolit_encodeSnappyBlockAsm12B
12979
12980matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm12B:
12981#ifdef GOAMD64_v3
12982 TZCNTQ R8, R8
12983
12984#else
12985 BSFQ R8, R8
12986
12987#endif
12988 SARQ $0x03, R8
12989 LEAL (R9)(R8*1), R9
12990 JMP match_nolit_end_encodeSnappyBlockAsm12B
12991
12992matchlen_match4_match_nolit_encodeSnappyBlockAsm12B:
12993 CMPL SI, $0x04
12994 JB matchlen_match2_match_nolit_encodeSnappyBlockAsm12B
12995 MOVL (DI)(R9*1), R8
12996 CMPL (BX)(R9*1), R8
12997 JNE matchlen_match2_match_nolit_encodeSnappyBlockAsm12B
12998 LEAL -4(SI), SI
12999 LEAL 4(R9), R9
13000
13001matchlen_match2_match_nolit_encodeSnappyBlockAsm12B:
13002 CMPL SI, $0x01
13003 JE matchlen_match1_match_nolit_encodeSnappyBlockAsm12B
13004 JB match_nolit_end_encodeSnappyBlockAsm12B
13005 MOVW (DI)(R9*1), R8
13006 CMPW (BX)(R9*1), R8
13007 JNE matchlen_match1_match_nolit_encodeSnappyBlockAsm12B
13008 LEAL 2(R9), R9
13009 SUBL $0x02, SI
13010 JZ match_nolit_end_encodeSnappyBlockAsm12B
13011
13012matchlen_match1_match_nolit_encodeSnappyBlockAsm12B:
13013 MOVB (DI)(R9*1), R8
13014 CMPB (BX)(R9*1), R8
13015 JNE match_nolit_end_encodeSnappyBlockAsm12B
13016 LEAL 1(R9), R9
13017
13018match_nolit_end_encodeSnappyBlockAsm12B:
13019 ADDL R9, CX
13020 MOVL 16(SP), BX
13021 ADDL $0x04, R9
13022 MOVL CX, 12(SP)
13023
13024 // emitCopy
13025two_byte_offset_match_nolit_encodeSnappyBlockAsm12B:
13026 CMPL R9, $0x40
13027 JBE two_byte_offset_short_match_nolit_encodeSnappyBlockAsm12B
13028 MOVB $0xee, (AX)
13029 MOVW BX, 1(AX)
13030 LEAL -60(R9), R9
13031 ADDQ $0x03, AX
13032 JMP two_byte_offset_match_nolit_encodeSnappyBlockAsm12B
13033
13034two_byte_offset_short_match_nolit_encodeSnappyBlockAsm12B:
13035 MOVL R9, SI
13036 SHLL $0x02, SI
13037 CMPL R9, $0x0c
13038 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm12B
13039 CMPL BX, $0x00000800
13040 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm12B
13041 LEAL -15(SI), SI
13042 MOVB BL, 1(AX)
13043 SHRL $0x08, BX
13044 SHLL $0x05, BX
13045 ORL BX, SI
13046 MOVB SI, (AX)
13047 ADDQ $0x02, AX
13048 JMP match_nolit_emitcopy_end_encodeSnappyBlockAsm12B
13049
13050emit_copy_three_match_nolit_encodeSnappyBlockAsm12B:
13051 LEAL -2(SI), SI
13052 MOVB SI, (AX)
13053 MOVW BX, 1(AX)
13054 ADDQ $0x03, AX
13055
13056match_nolit_emitcopy_end_encodeSnappyBlockAsm12B:
13057 CMPL CX, 8(SP)
13058 JAE emit_remainder_encodeSnappyBlockAsm12B
13059 MOVQ -2(DX)(CX*1), SI
13060 CMPQ AX, (SP)
13061 JB match_nolit_dst_ok_encodeSnappyBlockAsm12B
13062 MOVQ $0x00000000, ret+48(FP)
13063 RET
13064
13065match_nolit_dst_ok_encodeSnappyBlockAsm12B:
13066 MOVQ $0x000000cf1bbcdcbb, R8
13067 MOVQ SI, DI
13068 SHRQ $0x10, SI
13069 MOVQ SI, BX
13070 SHLQ $0x18, DI
13071 IMULQ R8, DI
13072 SHRQ $0x34, DI
13073 SHLQ $0x18, BX
13074 IMULQ R8, BX
13075 SHRQ $0x34, BX
13076 LEAL -2(CX), R8
13077 LEAQ 24(SP)(BX*4), R9
13078 MOVL (R9), BX
13079 MOVL R8, 24(SP)(DI*4)
13080 MOVL CX, (R9)
13081 CMPL (DX)(BX*1), SI
13082 JEQ match_nolit_loop_encodeSnappyBlockAsm12B
13083 INCL CX
13084 JMP search_loop_encodeSnappyBlockAsm12B
13085
13086emit_remainder_encodeSnappyBlockAsm12B:
13087 MOVQ src_len+32(FP), CX
13088 SUBL 12(SP), CX
13089 LEAQ 3(AX)(CX*1), CX
13090 CMPQ CX, (SP)
13091 JB emit_remainder_ok_encodeSnappyBlockAsm12B
13092 MOVQ $0x00000000, ret+48(FP)
13093 RET
13094
13095emit_remainder_ok_encodeSnappyBlockAsm12B:
13096 MOVQ src_len+32(FP), CX
13097 MOVL 12(SP), BX
13098 CMPL BX, CX
13099 JEQ emit_literal_done_emit_remainder_encodeSnappyBlockAsm12B
13100 MOVL CX, SI
13101 MOVL CX, 12(SP)
13102 LEAQ (DX)(BX*1), CX
13103 SUBL BX, SI
13104 LEAL -1(SI), DX
13105 CMPL DX, $0x3c
13106 JB one_byte_emit_remainder_encodeSnappyBlockAsm12B
13107 CMPL DX, $0x00000100
13108 JB two_bytes_emit_remainder_encodeSnappyBlockAsm12B
13109 JB three_bytes_emit_remainder_encodeSnappyBlockAsm12B
13110
13111three_bytes_emit_remainder_encodeSnappyBlockAsm12B:
13112 MOVB $0xf4, (AX)
13113 MOVW DX, 1(AX)
13114 ADDQ $0x03, AX
13115 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm12B
13116
13117two_bytes_emit_remainder_encodeSnappyBlockAsm12B:
13118 MOVB $0xf0, (AX)
13119 MOVB DL, 1(AX)
13120 ADDQ $0x02, AX
13121 CMPL DX, $0x40
13122 JB memmove_emit_remainder_encodeSnappyBlockAsm12B
13123 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm12B
13124
13125one_byte_emit_remainder_encodeSnappyBlockAsm12B:
13126 SHLB $0x02, DL
13127 MOVB DL, (AX)
13128 ADDQ $0x01, AX
13129
13130memmove_emit_remainder_encodeSnappyBlockAsm12B:
13131 LEAQ (AX)(SI*1), DX
13132 MOVL SI, BX
13133
13134 // genMemMoveShort
13135 CMPQ BX, $0x03
13136 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_1or2
13137 JE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_3
13138 CMPQ BX, $0x08
13139 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_4through7
13140 CMPQ BX, $0x10
13141 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_8through16
13142 CMPQ BX, $0x20
13143 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_17through32
13144 JMP emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_33through64
13145
13146emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_1or2:
13147 MOVB (CX), SI
13148 MOVB -1(CX)(BX*1), CL
13149 MOVB SI, (AX)
13150 MOVB CL, -1(AX)(BX*1)
13151 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm12B
13152
13153emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_3:
13154 MOVW (CX), SI
13155 MOVB 2(CX), CL
13156 MOVW SI, (AX)
13157 MOVB CL, 2(AX)
13158 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm12B
13159
13160emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_4through7:
13161 MOVL (CX), SI
13162 MOVL -4(CX)(BX*1), CX
13163 MOVL SI, (AX)
13164 MOVL CX, -4(AX)(BX*1)
13165 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm12B
13166
13167emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_8through16:
13168 MOVQ (CX), SI
13169 MOVQ -8(CX)(BX*1), CX
13170 MOVQ SI, (AX)
13171 MOVQ CX, -8(AX)(BX*1)
13172 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm12B
13173
13174emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_17through32:
13175 MOVOU (CX), X0
13176 MOVOU -16(CX)(BX*1), X1
13177 MOVOU X0, (AX)
13178 MOVOU X1, -16(AX)(BX*1)
13179 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm12B
13180
13181emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm12B_memmove_move_33through64:
13182 MOVOU (CX), X0
13183 MOVOU 16(CX), X1
13184 MOVOU -32(CX)(BX*1), X2
13185 MOVOU -16(CX)(BX*1), X3
13186 MOVOU X0, (AX)
13187 MOVOU X1, 16(AX)
13188 MOVOU X2, -32(AX)(BX*1)
13189 MOVOU X3, -16(AX)(BX*1)
13190
13191memmove_end_copy_emit_remainder_encodeSnappyBlockAsm12B:
13192 MOVQ DX, AX
13193 JMP emit_literal_done_emit_remainder_encodeSnappyBlockAsm12B
13194
13195memmove_long_emit_remainder_encodeSnappyBlockAsm12B:
13196 LEAQ (AX)(SI*1), DX
13197 MOVL SI, BX
13198
13199 // genMemMoveLong
13200 MOVOU (CX), X0
13201 MOVOU 16(CX), X1
13202 MOVOU -32(CX)(BX*1), X2
13203 MOVOU -16(CX)(BX*1), X3
13204 MOVQ BX, DI
13205 SHRQ $0x05, DI
13206 MOVQ AX, SI
13207 ANDL $0x0000001f, SI
13208 MOVQ $0x00000040, R8
13209 SUBQ SI, R8
13210 DECQ DI
13211 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32
13212 LEAQ -32(CX)(R8*1), SI
13213 LEAQ -32(AX)(R8*1), R9
13214
13215emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm12Blarge_big_loop_back:
13216 MOVOU (SI), X4
13217 MOVOU 16(SI), X5
13218 MOVOA X4, (R9)
13219 MOVOA X5, 16(R9)
13220 ADDQ $0x20, R9
13221 ADDQ $0x20, SI
13222 ADDQ $0x20, R8
13223 DECQ DI
13224 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm12Blarge_big_loop_back
13225
13226emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32:
13227 MOVOU -32(CX)(R8*1), X4
13228 MOVOU -16(CX)(R8*1), X5
13229 MOVOA X4, -32(AX)(R8*1)
13230 MOVOA X5, -16(AX)(R8*1)
13231 ADDQ $0x20, R8
13232 CMPQ BX, R8
13233 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm12Blarge_forward_sse_loop_32
13234 MOVOU X0, (AX)
13235 MOVOU X1, 16(AX)
13236 MOVOU X2, -32(AX)(BX*1)
13237 MOVOU X3, -16(AX)(BX*1)
13238 MOVQ DX, AX
13239
13240emit_literal_done_emit_remainder_encodeSnappyBlockAsm12B:
13241 MOVQ dst_base+0(FP), CX
13242 SUBQ CX, AX
13243 MOVQ AX, ret+48(FP)
13244 RET
13245
13246// func encodeSnappyBlockAsm10B(dst []byte, src []byte) int
13247// Requires: BMI, SSE2
13248TEXT ·encodeSnappyBlockAsm10B(SB), $4120-56
13249 MOVQ dst_base+0(FP), AX
13250 MOVQ $0x00000020, CX
13251 LEAQ 24(SP), DX
13252 PXOR X0, X0
13253
13254zero_loop_encodeSnappyBlockAsm10B:
13255 MOVOU X0, (DX)
13256 MOVOU X0, 16(DX)
13257 MOVOU X0, 32(DX)
13258 MOVOU X0, 48(DX)
13259 MOVOU X0, 64(DX)
13260 MOVOU X0, 80(DX)
13261 MOVOU X0, 96(DX)
13262 MOVOU X0, 112(DX)
13263 ADDQ $0x80, DX
13264 DECQ CX
13265 JNZ zero_loop_encodeSnappyBlockAsm10B
13266 MOVL $0x00000000, 12(SP)
13267 MOVQ src_len+32(FP), CX
13268 LEAQ -9(CX), DX
13269 LEAQ -8(CX), BX
13270 MOVL BX, 8(SP)
13271 SHRQ $0x05, CX
13272 SUBL CX, DX
13273 LEAQ (AX)(DX*1), DX
13274 MOVQ DX, (SP)
13275 MOVL $0x00000001, CX
13276 MOVL CX, 16(SP)
13277 MOVQ src_base+24(FP), DX
13278
13279search_loop_encodeSnappyBlockAsm10B:
13280 MOVL CX, BX
13281 SUBL 12(SP), BX
13282 SHRL $0x05, BX
13283 LEAL 4(CX)(BX*1), BX
13284 CMPL BX, 8(SP)
13285 JAE emit_remainder_encodeSnappyBlockAsm10B
13286 MOVQ (DX)(CX*1), SI
13287 MOVL BX, 20(SP)
13288 MOVQ $0x9e3779b1, R8
13289 MOVQ SI, R9
13290 MOVQ SI, R10
13291 SHRQ $0x08, R10
13292 SHLQ $0x20, R9
13293 IMULQ R8, R9
13294 SHRQ $0x36, R9
13295 SHLQ $0x20, R10
13296 IMULQ R8, R10
13297 SHRQ $0x36, R10
13298 MOVL 24(SP)(R9*4), BX
13299 MOVL 24(SP)(R10*4), DI
13300 MOVL CX, 24(SP)(R9*4)
13301 LEAL 1(CX), R9
13302 MOVL R9, 24(SP)(R10*4)
13303 MOVQ SI, R9
13304 SHRQ $0x10, R9
13305 SHLQ $0x20, R9
13306 IMULQ R8, R9
13307 SHRQ $0x36, R9
13308 MOVL CX, R8
13309 SUBL 16(SP), R8
13310 MOVL 1(DX)(R8*1), R10
13311 MOVQ SI, R8
13312 SHRQ $0x08, R8
13313 CMPL R8, R10
13314 JNE no_repeat_found_encodeSnappyBlockAsm10B
13315 LEAL 1(CX), SI
13316 MOVL 12(SP), BX
13317 MOVL SI, DI
13318 SUBL 16(SP), DI
13319 JZ repeat_extend_back_end_encodeSnappyBlockAsm10B
13320
13321repeat_extend_back_loop_encodeSnappyBlockAsm10B:
13322 CMPL SI, BX
13323 JBE repeat_extend_back_end_encodeSnappyBlockAsm10B
13324 MOVB -1(DX)(DI*1), R8
13325 MOVB -1(DX)(SI*1), R9
13326 CMPB R8, R9
13327 JNE repeat_extend_back_end_encodeSnappyBlockAsm10B
13328 LEAL -1(SI), SI
13329 DECL DI
13330 JNZ repeat_extend_back_loop_encodeSnappyBlockAsm10B
13331
13332repeat_extend_back_end_encodeSnappyBlockAsm10B:
13333 MOVL 12(SP), BX
13334 CMPL BX, SI
13335 JEQ emit_literal_done_repeat_emit_encodeSnappyBlockAsm10B
13336 MOVL SI, DI
13337 MOVL SI, 12(SP)
13338 LEAQ (DX)(BX*1), R8
13339 SUBL BX, DI
13340 LEAL -1(DI), BX
13341 CMPL BX, $0x3c
13342 JB one_byte_repeat_emit_encodeSnappyBlockAsm10B
13343 CMPL BX, $0x00000100
13344 JB two_bytes_repeat_emit_encodeSnappyBlockAsm10B
13345 JB three_bytes_repeat_emit_encodeSnappyBlockAsm10B
13346
13347three_bytes_repeat_emit_encodeSnappyBlockAsm10B:
13348 MOVB $0xf4, (AX)
13349 MOVW BX, 1(AX)
13350 ADDQ $0x03, AX
13351 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm10B
13352
13353two_bytes_repeat_emit_encodeSnappyBlockAsm10B:
13354 MOVB $0xf0, (AX)
13355 MOVB BL, 1(AX)
13356 ADDQ $0x02, AX
13357 CMPL BX, $0x40
13358 JB memmove_repeat_emit_encodeSnappyBlockAsm10B
13359 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm10B
13360
13361one_byte_repeat_emit_encodeSnappyBlockAsm10B:
13362 SHLB $0x02, BL
13363 MOVB BL, (AX)
13364 ADDQ $0x01, AX
13365
13366memmove_repeat_emit_encodeSnappyBlockAsm10B:
13367 LEAQ (AX)(DI*1), BX
13368
13369 // genMemMoveShort
13370 CMPQ DI, $0x08
13371 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_8
13372 CMPQ DI, $0x10
13373 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_8through16
13374 CMPQ DI, $0x20
13375 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_17through32
13376 JMP emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_33through64
13377
13378emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_8:
13379 MOVQ (R8), R9
13380 MOVQ R9, (AX)
13381 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm10B
13382
13383emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_8through16:
13384 MOVQ (R8), R9
13385 MOVQ -8(R8)(DI*1), R8
13386 MOVQ R9, (AX)
13387 MOVQ R8, -8(AX)(DI*1)
13388 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm10B
13389
13390emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_17through32:
13391 MOVOU (R8), X0
13392 MOVOU -16(R8)(DI*1), X1
13393 MOVOU X0, (AX)
13394 MOVOU X1, -16(AX)(DI*1)
13395 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm10B
13396
13397emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm10B_memmove_move_33through64:
13398 MOVOU (R8), X0
13399 MOVOU 16(R8), X1
13400 MOVOU -32(R8)(DI*1), X2
13401 MOVOU -16(R8)(DI*1), X3
13402 MOVOU X0, (AX)
13403 MOVOU X1, 16(AX)
13404 MOVOU X2, -32(AX)(DI*1)
13405 MOVOU X3, -16(AX)(DI*1)
13406
13407memmove_end_copy_repeat_emit_encodeSnappyBlockAsm10B:
13408 MOVQ BX, AX
13409 JMP emit_literal_done_repeat_emit_encodeSnappyBlockAsm10B
13410
13411memmove_long_repeat_emit_encodeSnappyBlockAsm10B:
13412 LEAQ (AX)(DI*1), BX
13413
13414 // genMemMoveLong
13415 MOVOU (R8), X0
13416 MOVOU 16(R8), X1
13417 MOVOU -32(R8)(DI*1), X2
13418 MOVOU -16(R8)(DI*1), X3
13419 MOVQ DI, R10
13420 SHRQ $0x05, R10
13421 MOVQ AX, R9
13422 ANDL $0x0000001f, R9
13423 MOVQ $0x00000040, R11
13424 SUBQ R9, R11
13425 DECQ R10
13426 JA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32
13427 LEAQ -32(R8)(R11*1), R9
13428 LEAQ -32(AX)(R11*1), R12
13429
13430emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm10Blarge_big_loop_back:
13431 MOVOU (R9), X4
13432 MOVOU 16(R9), X5
13433 MOVOA X4, (R12)
13434 MOVOA X5, 16(R12)
13435 ADDQ $0x20, R12
13436 ADDQ $0x20, R9
13437 ADDQ $0x20, R11
13438 DECQ R10
13439 JNA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm10Blarge_big_loop_back
13440
13441emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32:
13442 MOVOU -32(R8)(R11*1), X4
13443 MOVOU -16(R8)(R11*1), X5
13444 MOVOA X4, -32(AX)(R11*1)
13445 MOVOA X5, -16(AX)(R11*1)
13446 ADDQ $0x20, R11
13447 CMPQ DI, R11
13448 JAE emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32
13449 MOVOU X0, (AX)
13450 MOVOU X1, 16(AX)
13451 MOVOU X2, -32(AX)(DI*1)
13452 MOVOU X3, -16(AX)(DI*1)
13453 MOVQ BX, AX
13454
13455emit_literal_done_repeat_emit_encodeSnappyBlockAsm10B:
13456 ADDL $0x05, CX
13457 MOVL CX, BX
13458 SUBL 16(SP), BX
13459 MOVQ src_len+32(FP), DI
13460 SUBL CX, DI
13461 LEAQ (DX)(CX*1), R8
13462 LEAQ (DX)(BX*1), BX
13463
13464 // matchLen
13465 XORL R10, R10
13466
13467matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm10B:
13468 CMPL DI, $0x10
13469 JB matchlen_match8_repeat_extend_encodeSnappyBlockAsm10B
13470 MOVQ (R8)(R10*1), R9
13471 MOVQ 8(R8)(R10*1), R11
13472 XORQ (BX)(R10*1), R9
13473 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm10B
13474 XORQ 8(BX)(R10*1), R11
13475 JNZ matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm10B
13476 LEAL -16(DI), DI
13477 LEAL 16(R10), R10
13478 JMP matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm10B
13479
13480matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm10B:
13481#ifdef GOAMD64_v3
13482 TZCNTQ R11, R11
13483
13484#else
13485 BSFQ R11, R11
13486
13487#endif
13488 SARQ $0x03, R11
13489 LEAL 8(R10)(R11*1), R10
13490 JMP repeat_extend_forward_end_encodeSnappyBlockAsm10B
13491
13492matchlen_match8_repeat_extend_encodeSnappyBlockAsm10B:
13493 CMPL DI, $0x08
13494 JB matchlen_match4_repeat_extend_encodeSnappyBlockAsm10B
13495 MOVQ (R8)(R10*1), R9
13496 XORQ (BX)(R10*1), R9
13497 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm10B
13498 LEAL -8(DI), DI
13499 LEAL 8(R10), R10
13500 JMP matchlen_match4_repeat_extend_encodeSnappyBlockAsm10B
13501
13502matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm10B:
13503#ifdef GOAMD64_v3
13504 TZCNTQ R9, R9
13505
13506#else
13507 BSFQ R9, R9
13508
13509#endif
13510 SARQ $0x03, R9
13511 LEAL (R10)(R9*1), R10
13512 JMP repeat_extend_forward_end_encodeSnappyBlockAsm10B
13513
13514matchlen_match4_repeat_extend_encodeSnappyBlockAsm10B:
13515 CMPL DI, $0x04
13516 JB matchlen_match2_repeat_extend_encodeSnappyBlockAsm10B
13517 MOVL (R8)(R10*1), R9
13518 CMPL (BX)(R10*1), R9
13519 JNE matchlen_match2_repeat_extend_encodeSnappyBlockAsm10B
13520 LEAL -4(DI), DI
13521 LEAL 4(R10), R10
13522
13523matchlen_match2_repeat_extend_encodeSnappyBlockAsm10B:
13524 CMPL DI, $0x01
13525 JE matchlen_match1_repeat_extend_encodeSnappyBlockAsm10B
13526 JB repeat_extend_forward_end_encodeSnappyBlockAsm10B
13527 MOVW (R8)(R10*1), R9
13528 CMPW (BX)(R10*1), R9
13529 JNE matchlen_match1_repeat_extend_encodeSnappyBlockAsm10B
13530 LEAL 2(R10), R10
13531 SUBL $0x02, DI
13532 JZ repeat_extend_forward_end_encodeSnappyBlockAsm10B
13533
13534matchlen_match1_repeat_extend_encodeSnappyBlockAsm10B:
13535 MOVB (R8)(R10*1), R9
13536 CMPB (BX)(R10*1), R9
13537 JNE repeat_extend_forward_end_encodeSnappyBlockAsm10B
13538 LEAL 1(R10), R10
13539
13540repeat_extend_forward_end_encodeSnappyBlockAsm10B:
13541 ADDL R10, CX
13542 MOVL CX, BX
13543 SUBL SI, BX
13544 MOVL 16(SP), SI
13545
13546 // emitCopy
13547two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm10B:
13548 CMPL BX, $0x40
13549 JBE two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm10B
13550 MOVB $0xee, (AX)
13551 MOVW SI, 1(AX)
13552 LEAL -60(BX), BX
13553 ADDQ $0x03, AX
13554 JMP two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm10B
13555
13556two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm10B:
13557 MOVL BX, DI
13558 SHLL $0x02, DI
13559 CMPL BX, $0x0c
13560 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm10B
13561 CMPL SI, $0x00000800
13562 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm10B
13563 LEAL -15(DI), DI
13564 MOVB SI, 1(AX)
13565 SHRL $0x08, SI
13566 SHLL $0x05, SI
13567 ORL SI, DI
13568 MOVB DI, (AX)
13569 ADDQ $0x02, AX
13570 JMP repeat_end_emit_encodeSnappyBlockAsm10B
13571
13572emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm10B:
13573 LEAL -2(DI), DI
13574 MOVB DI, (AX)
13575 MOVW SI, 1(AX)
13576 ADDQ $0x03, AX
13577
13578repeat_end_emit_encodeSnappyBlockAsm10B:
13579 MOVL CX, 12(SP)
13580 JMP search_loop_encodeSnappyBlockAsm10B
13581
13582no_repeat_found_encodeSnappyBlockAsm10B:
13583 CMPL (DX)(BX*1), SI
13584 JEQ candidate_match_encodeSnappyBlockAsm10B
13585 SHRQ $0x08, SI
13586 MOVL 24(SP)(R9*4), BX
13587 LEAL 2(CX), R8
13588 CMPL (DX)(DI*1), SI
13589 JEQ candidate2_match_encodeSnappyBlockAsm10B
13590 MOVL R8, 24(SP)(R9*4)
13591 SHRQ $0x08, SI
13592 CMPL (DX)(BX*1), SI
13593 JEQ candidate3_match_encodeSnappyBlockAsm10B
13594 MOVL 20(SP), CX
13595 JMP search_loop_encodeSnappyBlockAsm10B
13596
13597candidate3_match_encodeSnappyBlockAsm10B:
13598 ADDL $0x02, CX
13599 JMP candidate_match_encodeSnappyBlockAsm10B
13600
13601candidate2_match_encodeSnappyBlockAsm10B:
13602 MOVL R8, 24(SP)(R9*4)
13603 INCL CX
13604 MOVL DI, BX
13605
13606candidate_match_encodeSnappyBlockAsm10B:
13607 MOVL 12(SP), SI
13608 TESTL BX, BX
13609 JZ match_extend_back_end_encodeSnappyBlockAsm10B
13610
13611match_extend_back_loop_encodeSnappyBlockAsm10B:
13612 CMPL CX, SI
13613 JBE match_extend_back_end_encodeSnappyBlockAsm10B
13614 MOVB -1(DX)(BX*1), DI
13615 MOVB -1(DX)(CX*1), R8
13616 CMPB DI, R8
13617 JNE match_extend_back_end_encodeSnappyBlockAsm10B
13618 LEAL -1(CX), CX
13619 DECL BX
13620 JZ match_extend_back_end_encodeSnappyBlockAsm10B
13621 JMP match_extend_back_loop_encodeSnappyBlockAsm10B
13622
13623match_extend_back_end_encodeSnappyBlockAsm10B:
13624 MOVL CX, SI
13625 SUBL 12(SP), SI
13626 LEAQ 3(AX)(SI*1), SI
13627 CMPQ SI, (SP)
13628 JB match_dst_size_check_encodeSnappyBlockAsm10B
13629 MOVQ $0x00000000, ret+48(FP)
13630 RET
13631
13632match_dst_size_check_encodeSnappyBlockAsm10B:
13633 MOVL CX, SI
13634 MOVL 12(SP), DI
13635 CMPL DI, SI
13636 JEQ emit_literal_done_match_emit_encodeSnappyBlockAsm10B
13637 MOVL SI, R8
13638 MOVL SI, 12(SP)
13639 LEAQ (DX)(DI*1), SI
13640 SUBL DI, R8
13641 LEAL -1(R8), DI
13642 CMPL DI, $0x3c
13643 JB one_byte_match_emit_encodeSnappyBlockAsm10B
13644 CMPL DI, $0x00000100
13645 JB two_bytes_match_emit_encodeSnappyBlockAsm10B
13646 JB three_bytes_match_emit_encodeSnappyBlockAsm10B
13647
13648three_bytes_match_emit_encodeSnappyBlockAsm10B:
13649 MOVB $0xf4, (AX)
13650 MOVW DI, 1(AX)
13651 ADDQ $0x03, AX
13652 JMP memmove_long_match_emit_encodeSnappyBlockAsm10B
13653
13654two_bytes_match_emit_encodeSnappyBlockAsm10B:
13655 MOVB $0xf0, (AX)
13656 MOVB DI, 1(AX)
13657 ADDQ $0x02, AX
13658 CMPL DI, $0x40
13659 JB memmove_match_emit_encodeSnappyBlockAsm10B
13660 JMP memmove_long_match_emit_encodeSnappyBlockAsm10B
13661
13662one_byte_match_emit_encodeSnappyBlockAsm10B:
13663 SHLB $0x02, DI
13664 MOVB DI, (AX)
13665 ADDQ $0x01, AX
13666
13667memmove_match_emit_encodeSnappyBlockAsm10B:
13668 LEAQ (AX)(R8*1), DI
13669
13670 // genMemMoveShort
13671 CMPQ R8, $0x08
13672 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_8
13673 CMPQ R8, $0x10
13674 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_8through16
13675 CMPQ R8, $0x20
13676 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_17through32
13677 JMP emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_33through64
13678
13679emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_8:
13680 MOVQ (SI), R9
13681 MOVQ R9, (AX)
13682 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm10B
13683
13684emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_8through16:
13685 MOVQ (SI), R9
13686 MOVQ -8(SI)(R8*1), SI
13687 MOVQ R9, (AX)
13688 MOVQ SI, -8(AX)(R8*1)
13689 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm10B
13690
13691emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_17through32:
13692 MOVOU (SI), X0
13693 MOVOU -16(SI)(R8*1), X1
13694 MOVOU X0, (AX)
13695 MOVOU X1, -16(AX)(R8*1)
13696 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm10B
13697
13698emit_lit_memmove_match_emit_encodeSnappyBlockAsm10B_memmove_move_33through64:
13699 MOVOU (SI), X0
13700 MOVOU 16(SI), X1
13701 MOVOU -32(SI)(R8*1), X2
13702 MOVOU -16(SI)(R8*1), X3
13703 MOVOU X0, (AX)
13704 MOVOU X1, 16(AX)
13705 MOVOU X2, -32(AX)(R8*1)
13706 MOVOU X3, -16(AX)(R8*1)
13707
13708memmove_end_copy_match_emit_encodeSnappyBlockAsm10B:
13709 MOVQ DI, AX
13710 JMP emit_literal_done_match_emit_encodeSnappyBlockAsm10B
13711
13712memmove_long_match_emit_encodeSnappyBlockAsm10B:
13713 LEAQ (AX)(R8*1), DI
13714
13715 // genMemMoveLong
13716 MOVOU (SI), X0
13717 MOVOU 16(SI), X1
13718 MOVOU -32(SI)(R8*1), X2
13719 MOVOU -16(SI)(R8*1), X3
13720 MOVQ R8, R10
13721 SHRQ $0x05, R10
13722 MOVQ AX, R9
13723 ANDL $0x0000001f, R9
13724 MOVQ $0x00000040, R11
13725 SUBQ R9, R11
13726 DECQ R10
13727 JA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32
13728 LEAQ -32(SI)(R11*1), R9
13729 LEAQ -32(AX)(R11*1), R12
13730
13731emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm10Blarge_big_loop_back:
13732 MOVOU (R9), X4
13733 MOVOU 16(R9), X5
13734 MOVOA X4, (R12)
13735 MOVOA X5, 16(R12)
13736 ADDQ $0x20, R12
13737 ADDQ $0x20, R9
13738 ADDQ $0x20, R11
13739 DECQ R10
13740 JNA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm10Blarge_big_loop_back
13741
13742emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32:
13743 MOVOU -32(SI)(R11*1), X4
13744 MOVOU -16(SI)(R11*1), X5
13745 MOVOA X4, -32(AX)(R11*1)
13746 MOVOA X5, -16(AX)(R11*1)
13747 ADDQ $0x20, R11
13748 CMPQ R8, R11
13749 JAE emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32
13750 MOVOU X0, (AX)
13751 MOVOU X1, 16(AX)
13752 MOVOU X2, -32(AX)(R8*1)
13753 MOVOU X3, -16(AX)(R8*1)
13754 MOVQ DI, AX
13755
13756emit_literal_done_match_emit_encodeSnappyBlockAsm10B:
13757match_nolit_loop_encodeSnappyBlockAsm10B:
13758 MOVL CX, SI
13759 SUBL BX, SI
13760 MOVL SI, 16(SP)
13761 ADDL $0x04, CX
13762 ADDL $0x04, BX
13763 MOVQ src_len+32(FP), SI
13764 SUBL CX, SI
13765 LEAQ (DX)(CX*1), DI
13766 LEAQ (DX)(BX*1), BX
13767
13768 // matchLen
13769 XORL R9, R9
13770
13771matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm10B:
13772 CMPL SI, $0x10
13773 JB matchlen_match8_match_nolit_encodeSnappyBlockAsm10B
13774 MOVQ (DI)(R9*1), R8
13775 MOVQ 8(DI)(R9*1), R10
13776 XORQ (BX)(R9*1), R8
13777 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm10B
13778 XORQ 8(BX)(R9*1), R10
13779 JNZ matchlen_bsf_16match_nolit_encodeSnappyBlockAsm10B
13780 LEAL -16(SI), SI
13781 LEAL 16(R9), R9
13782 JMP matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm10B
13783
13784matchlen_bsf_16match_nolit_encodeSnappyBlockAsm10B:
13785#ifdef GOAMD64_v3
13786 TZCNTQ R10, R10
13787
13788#else
13789 BSFQ R10, R10
13790
13791#endif
13792 SARQ $0x03, R10
13793 LEAL 8(R9)(R10*1), R9
13794 JMP match_nolit_end_encodeSnappyBlockAsm10B
13795
13796matchlen_match8_match_nolit_encodeSnappyBlockAsm10B:
13797 CMPL SI, $0x08
13798 JB matchlen_match4_match_nolit_encodeSnappyBlockAsm10B
13799 MOVQ (DI)(R9*1), R8
13800 XORQ (BX)(R9*1), R8
13801 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm10B
13802 LEAL -8(SI), SI
13803 LEAL 8(R9), R9
13804 JMP matchlen_match4_match_nolit_encodeSnappyBlockAsm10B
13805
13806matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm10B:
13807#ifdef GOAMD64_v3
13808 TZCNTQ R8, R8
13809
13810#else
13811 BSFQ R8, R8
13812
13813#endif
13814 SARQ $0x03, R8
13815 LEAL (R9)(R8*1), R9
13816 JMP match_nolit_end_encodeSnappyBlockAsm10B
13817
13818matchlen_match4_match_nolit_encodeSnappyBlockAsm10B:
13819 CMPL SI, $0x04
13820 JB matchlen_match2_match_nolit_encodeSnappyBlockAsm10B
13821 MOVL (DI)(R9*1), R8
13822 CMPL (BX)(R9*1), R8
13823 JNE matchlen_match2_match_nolit_encodeSnappyBlockAsm10B
13824 LEAL -4(SI), SI
13825 LEAL 4(R9), R9
13826
13827matchlen_match2_match_nolit_encodeSnappyBlockAsm10B:
13828 CMPL SI, $0x01
13829 JE matchlen_match1_match_nolit_encodeSnappyBlockAsm10B
13830 JB match_nolit_end_encodeSnappyBlockAsm10B
13831 MOVW (DI)(R9*1), R8
13832 CMPW (BX)(R9*1), R8
13833 JNE matchlen_match1_match_nolit_encodeSnappyBlockAsm10B
13834 LEAL 2(R9), R9
13835 SUBL $0x02, SI
13836 JZ match_nolit_end_encodeSnappyBlockAsm10B
13837
13838matchlen_match1_match_nolit_encodeSnappyBlockAsm10B:
13839 MOVB (DI)(R9*1), R8
13840 CMPB (BX)(R9*1), R8
13841 JNE match_nolit_end_encodeSnappyBlockAsm10B
13842 LEAL 1(R9), R9
13843
13844match_nolit_end_encodeSnappyBlockAsm10B:
13845 ADDL R9, CX
13846 MOVL 16(SP), BX
13847 ADDL $0x04, R9
13848 MOVL CX, 12(SP)
13849
13850 // emitCopy
13851two_byte_offset_match_nolit_encodeSnappyBlockAsm10B:
13852 CMPL R9, $0x40
13853 JBE two_byte_offset_short_match_nolit_encodeSnappyBlockAsm10B
13854 MOVB $0xee, (AX)
13855 MOVW BX, 1(AX)
13856 LEAL -60(R9), R9
13857 ADDQ $0x03, AX
13858 JMP two_byte_offset_match_nolit_encodeSnappyBlockAsm10B
13859
13860two_byte_offset_short_match_nolit_encodeSnappyBlockAsm10B:
13861 MOVL R9, SI
13862 SHLL $0x02, SI
13863 CMPL R9, $0x0c
13864 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm10B
13865 CMPL BX, $0x00000800
13866 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm10B
13867 LEAL -15(SI), SI
13868 MOVB BL, 1(AX)
13869 SHRL $0x08, BX
13870 SHLL $0x05, BX
13871 ORL BX, SI
13872 MOVB SI, (AX)
13873 ADDQ $0x02, AX
13874 JMP match_nolit_emitcopy_end_encodeSnappyBlockAsm10B
13875
13876emit_copy_three_match_nolit_encodeSnappyBlockAsm10B:
13877 LEAL -2(SI), SI
13878 MOVB SI, (AX)
13879 MOVW BX, 1(AX)
13880 ADDQ $0x03, AX
13881
13882match_nolit_emitcopy_end_encodeSnappyBlockAsm10B:
13883 CMPL CX, 8(SP)
13884 JAE emit_remainder_encodeSnappyBlockAsm10B
13885 MOVQ -2(DX)(CX*1), SI
13886 CMPQ AX, (SP)
13887 JB match_nolit_dst_ok_encodeSnappyBlockAsm10B
13888 MOVQ $0x00000000, ret+48(FP)
13889 RET
13890
13891match_nolit_dst_ok_encodeSnappyBlockAsm10B:
13892 MOVQ $0x9e3779b1, R8
13893 MOVQ SI, DI
13894 SHRQ $0x10, SI
13895 MOVQ SI, BX
13896 SHLQ $0x20, DI
13897 IMULQ R8, DI
13898 SHRQ $0x36, DI
13899 SHLQ $0x20, BX
13900 IMULQ R8, BX
13901 SHRQ $0x36, BX
13902 LEAL -2(CX), R8
13903 LEAQ 24(SP)(BX*4), R9
13904 MOVL (R9), BX
13905 MOVL R8, 24(SP)(DI*4)
13906 MOVL CX, (R9)
13907 CMPL (DX)(BX*1), SI
13908 JEQ match_nolit_loop_encodeSnappyBlockAsm10B
13909 INCL CX
13910 JMP search_loop_encodeSnappyBlockAsm10B
13911
13912emit_remainder_encodeSnappyBlockAsm10B:
13913 MOVQ src_len+32(FP), CX
13914 SUBL 12(SP), CX
13915 LEAQ 3(AX)(CX*1), CX
13916 CMPQ CX, (SP)
13917 JB emit_remainder_ok_encodeSnappyBlockAsm10B
13918 MOVQ $0x00000000, ret+48(FP)
13919 RET
13920
13921emit_remainder_ok_encodeSnappyBlockAsm10B:
13922 MOVQ src_len+32(FP), CX
13923 MOVL 12(SP), BX
13924 CMPL BX, CX
13925 JEQ emit_literal_done_emit_remainder_encodeSnappyBlockAsm10B
13926 MOVL CX, SI
13927 MOVL CX, 12(SP)
13928 LEAQ (DX)(BX*1), CX
13929 SUBL BX, SI
13930 LEAL -1(SI), DX
13931 CMPL DX, $0x3c
13932 JB one_byte_emit_remainder_encodeSnappyBlockAsm10B
13933 CMPL DX, $0x00000100
13934 JB two_bytes_emit_remainder_encodeSnappyBlockAsm10B
13935 JB three_bytes_emit_remainder_encodeSnappyBlockAsm10B
13936
13937three_bytes_emit_remainder_encodeSnappyBlockAsm10B:
13938 MOVB $0xf4, (AX)
13939 MOVW DX, 1(AX)
13940 ADDQ $0x03, AX
13941 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm10B
13942
13943two_bytes_emit_remainder_encodeSnappyBlockAsm10B:
13944 MOVB $0xf0, (AX)
13945 MOVB DL, 1(AX)
13946 ADDQ $0x02, AX
13947 CMPL DX, $0x40
13948 JB memmove_emit_remainder_encodeSnappyBlockAsm10B
13949 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm10B
13950
13951one_byte_emit_remainder_encodeSnappyBlockAsm10B:
13952 SHLB $0x02, DL
13953 MOVB DL, (AX)
13954 ADDQ $0x01, AX
13955
13956memmove_emit_remainder_encodeSnappyBlockAsm10B:
13957 LEAQ (AX)(SI*1), DX
13958 MOVL SI, BX
13959
13960 // genMemMoveShort
13961 CMPQ BX, $0x03
13962 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_1or2
13963 JE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_3
13964 CMPQ BX, $0x08
13965 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_4through7
13966 CMPQ BX, $0x10
13967 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_8through16
13968 CMPQ BX, $0x20
13969 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_17through32
13970 JMP emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_33through64
13971
13972emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_1or2:
13973 MOVB (CX), SI
13974 MOVB -1(CX)(BX*1), CL
13975 MOVB SI, (AX)
13976 MOVB CL, -1(AX)(BX*1)
13977 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm10B
13978
13979emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_3:
13980 MOVW (CX), SI
13981 MOVB 2(CX), CL
13982 MOVW SI, (AX)
13983 MOVB CL, 2(AX)
13984 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm10B
13985
13986emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_4through7:
13987 MOVL (CX), SI
13988 MOVL -4(CX)(BX*1), CX
13989 MOVL SI, (AX)
13990 MOVL CX, -4(AX)(BX*1)
13991 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm10B
13992
13993emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_8through16:
13994 MOVQ (CX), SI
13995 MOVQ -8(CX)(BX*1), CX
13996 MOVQ SI, (AX)
13997 MOVQ CX, -8(AX)(BX*1)
13998 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm10B
13999
14000emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_17through32:
14001 MOVOU (CX), X0
14002 MOVOU -16(CX)(BX*1), X1
14003 MOVOU X0, (AX)
14004 MOVOU X1, -16(AX)(BX*1)
14005 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm10B
14006
14007emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm10B_memmove_move_33through64:
14008 MOVOU (CX), X0
14009 MOVOU 16(CX), X1
14010 MOVOU -32(CX)(BX*1), X2
14011 MOVOU -16(CX)(BX*1), X3
14012 MOVOU X0, (AX)
14013 MOVOU X1, 16(AX)
14014 MOVOU X2, -32(AX)(BX*1)
14015 MOVOU X3, -16(AX)(BX*1)
14016
14017memmove_end_copy_emit_remainder_encodeSnappyBlockAsm10B:
14018 MOVQ DX, AX
14019 JMP emit_literal_done_emit_remainder_encodeSnappyBlockAsm10B
14020
14021memmove_long_emit_remainder_encodeSnappyBlockAsm10B:
14022 LEAQ (AX)(SI*1), DX
14023 MOVL SI, BX
14024
14025 // genMemMoveLong
14026 MOVOU (CX), X0
14027 MOVOU 16(CX), X1
14028 MOVOU -32(CX)(BX*1), X2
14029 MOVOU -16(CX)(BX*1), X3
14030 MOVQ BX, DI
14031 SHRQ $0x05, DI
14032 MOVQ AX, SI
14033 ANDL $0x0000001f, SI
14034 MOVQ $0x00000040, R8
14035 SUBQ SI, R8
14036 DECQ DI
14037 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32
14038 LEAQ -32(CX)(R8*1), SI
14039 LEAQ -32(AX)(R8*1), R9
14040
14041emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm10Blarge_big_loop_back:
14042 MOVOU (SI), X4
14043 MOVOU 16(SI), X5
14044 MOVOA X4, (R9)
14045 MOVOA X5, 16(R9)
14046 ADDQ $0x20, R9
14047 ADDQ $0x20, SI
14048 ADDQ $0x20, R8
14049 DECQ DI
14050 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm10Blarge_big_loop_back
14051
14052emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32:
14053 MOVOU -32(CX)(R8*1), X4
14054 MOVOU -16(CX)(R8*1), X5
14055 MOVOA X4, -32(AX)(R8*1)
14056 MOVOA X5, -16(AX)(R8*1)
14057 ADDQ $0x20, R8
14058 CMPQ BX, R8
14059 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm10Blarge_forward_sse_loop_32
14060 MOVOU X0, (AX)
14061 MOVOU X1, 16(AX)
14062 MOVOU X2, -32(AX)(BX*1)
14063 MOVOU X3, -16(AX)(BX*1)
14064 MOVQ DX, AX
14065
14066emit_literal_done_emit_remainder_encodeSnappyBlockAsm10B:
14067 MOVQ dst_base+0(FP), CX
14068 SUBQ CX, AX
14069 MOVQ AX, ret+48(FP)
14070 RET
14071
14072// func encodeSnappyBlockAsm8B(dst []byte, src []byte) int
14073// Requires: BMI, SSE2
14074TEXT ·encodeSnappyBlockAsm8B(SB), $1048-56
14075 MOVQ dst_base+0(FP), AX
14076 MOVQ $0x00000008, CX
14077 LEAQ 24(SP), DX
14078 PXOR X0, X0
14079
14080zero_loop_encodeSnappyBlockAsm8B:
14081 MOVOU X0, (DX)
14082 MOVOU X0, 16(DX)
14083 MOVOU X0, 32(DX)
14084 MOVOU X0, 48(DX)
14085 MOVOU X0, 64(DX)
14086 MOVOU X0, 80(DX)
14087 MOVOU X0, 96(DX)
14088 MOVOU X0, 112(DX)
14089 ADDQ $0x80, DX
14090 DECQ CX
14091 JNZ zero_loop_encodeSnappyBlockAsm8B
14092 MOVL $0x00000000, 12(SP)
14093 MOVQ src_len+32(FP), CX
14094 LEAQ -9(CX), DX
14095 LEAQ -8(CX), BX
14096 MOVL BX, 8(SP)
14097 SHRQ $0x05, CX
14098 SUBL CX, DX
14099 LEAQ (AX)(DX*1), DX
14100 MOVQ DX, (SP)
14101 MOVL $0x00000001, CX
14102 MOVL CX, 16(SP)
14103 MOVQ src_base+24(FP), DX
14104
14105search_loop_encodeSnappyBlockAsm8B:
14106 MOVL CX, BX
14107 SUBL 12(SP), BX
14108 SHRL $0x04, BX
14109 LEAL 4(CX)(BX*1), BX
14110 CMPL BX, 8(SP)
14111 JAE emit_remainder_encodeSnappyBlockAsm8B
14112 MOVQ (DX)(CX*1), SI
14113 MOVL BX, 20(SP)
14114 MOVQ $0x9e3779b1, R8
14115 MOVQ SI, R9
14116 MOVQ SI, R10
14117 SHRQ $0x08, R10
14118 SHLQ $0x20, R9
14119 IMULQ R8, R9
14120 SHRQ $0x38, R9
14121 SHLQ $0x20, R10
14122 IMULQ R8, R10
14123 SHRQ $0x38, R10
14124 MOVL 24(SP)(R9*4), BX
14125 MOVL 24(SP)(R10*4), DI
14126 MOVL CX, 24(SP)(R9*4)
14127 LEAL 1(CX), R9
14128 MOVL R9, 24(SP)(R10*4)
14129 MOVQ SI, R9
14130 SHRQ $0x10, R9
14131 SHLQ $0x20, R9
14132 IMULQ R8, R9
14133 SHRQ $0x38, R9
14134 MOVL CX, R8
14135 SUBL 16(SP), R8
14136 MOVL 1(DX)(R8*1), R10
14137 MOVQ SI, R8
14138 SHRQ $0x08, R8
14139 CMPL R8, R10
14140 JNE no_repeat_found_encodeSnappyBlockAsm8B
14141 LEAL 1(CX), SI
14142 MOVL 12(SP), BX
14143 MOVL SI, DI
14144 SUBL 16(SP), DI
14145 JZ repeat_extend_back_end_encodeSnappyBlockAsm8B
14146
14147repeat_extend_back_loop_encodeSnappyBlockAsm8B:
14148 CMPL SI, BX
14149 JBE repeat_extend_back_end_encodeSnappyBlockAsm8B
14150 MOVB -1(DX)(DI*1), R8
14151 MOVB -1(DX)(SI*1), R9
14152 CMPB R8, R9
14153 JNE repeat_extend_back_end_encodeSnappyBlockAsm8B
14154 LEAL -1(SI), SI
14155 DECL DI
14156 JNZ repeat_extend_back_loop_encodeSnappyBlockAsm8B
14157
14158repeat_extend_back_end_encodeSnappyBlockAsm8B:
14159 MOVL 12(SP), BX
14160 CMPL BX, SI
14161 JEQ emit_literal_done_repeat_emit_encodeSnappyBlockAsm8B
14162 MOVL SI, DI
14163 MOVL SI, 12(SP)
14164 LEAQ (DX)(BX*1), R8
14165 SUBL BX, DI
14166 LEAL -1(DI), BX
14167 CMPL BX, $0x3c
14168 JB one_byte_repeat_emit_encodeSnappyBlockAsm8B
14169 CMPL BX, $0x00000100
14170 JB two_bytes_repeat_emit_encodeSnappyBlockAsm8B
14171 JB three_bytes_repeat_emit_encodeSnappyBlockAsm8B
14172
14173three_bytes_repeat_emit_encodeSnappyBlockAsm8B:
14174 MOVB $0xf4, (AX)
14175 MOVW BX, 1(AX)
14176 ADDQ $0x03, AX
14177 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm8B
14178
14179two_bytes_repeat_emit_encodeSnappyBlockAsm8B:
14180 MOVB $0xf0, (AX)
14181 MOVB BL, 1(AX)
14182 ADDQ $0x02, AX
14183 CMPL BX, $0x40
14184 JB memmove_repeat_emit_encodeSnappyBlockAsm8B
14185 JMP memmove_long_repeat_emit_encodeSnappyBlockAsm8B
14186
14187one_byte_repeat_emit_encodeSnappyBlockAsm8B:
14188 SHLB $0x02, BL
14189 MOVB BL, (AX)
14190 ADDQ $0x01, AX
14191
14192memmove_repeat_emit_encodeSnappyBlockAsm8B:
14193 LEAQ (AX)(DI*1), BX
14194
14195 // genMemMoveShort
14196 CMPQ DI, $0x08
14197 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_8
14198 CMPQ DI, $0x10
14199 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_8through16
14200 CMPQ DI, $0x20
14201 JBE emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_17through32
14202 JMP emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_33through64
14203
14204emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_8:
14205 MOVQ (R8), R9
14206 MOVQ R9, (AX)
14207 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm8B
14208
14209emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_8through16:
14210 MOVQ (R8), R9
14211 MOVQ -8(R8)(DI*1), R8
14212 MOVQ R9, (AX)
14213 MOVQ R8, -8(AX)(DI*1)
14214 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm8B
14215
14216emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_17through32:
14217 MOVOU (R8), X0
14218 MOVOU -16(R8)(DI*1), X1
14219 MOVOU X0, (AX)
14220 MOVOU X1, -16(AX)(DI*1)
14221 JMP memmove_end_copy_repeat_emit_encodeSnappyBlockAsm8B
14222
14223emit_lit_memmove_repeat_emit_encodeSnappyBlockAsm8B_memmove_move_33through64:
14224 MOVOU (R8), X0
14225 MOVOU 16(R8), X1
14226 MOVOU -32(R8)(DI*1), X2
14227 MOVOU -16(R8)(DI*1), X3
14228 MOVOU X0, (AX)
14229 MOVOU X1, 16(AX)
14230 MOVOU X2, -32(AX)(DI*1)
14231 MOVOU X3, -16(AX)(DI*1)
14232
14233memmove_end_copy_repeat_emit_encodeSnappyBlockAsm8B:
14234 MOVQ BX, AX
14235 JMP emit_literal_done_repeat_emit_encodeSnappyBlockAsm8B
14236
14237memmove_long_repeat_emit_encodeSnappyBlockAsm8B:
14238 LEAQ (AX)(DI*1), BX
14239
14240 // genMemMoveLong
14241 MOVOU (R8), X0
14242 MOVOU 16(R8), X1
14243 MOVOU -32(R8)(DI*1), X2
14244 MOVOU -16(R8)(DI*1), X3
14245 MOVQ DI, R10
14246 SHRQ $0x05, R10
14247 MOVQ AX, R9
14248 ANDL $0x0000001f, R9
14249 MOVQ $0x00000040, R11
14250 SUBQ R9, R11
14251 DECQ R10
14252 JA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32
14253 LEAQ -32(R8)(R11*1), R9
14254 LEAQ -32(AX)(R11*1), R12
14255
14256emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm8Blarge_big_loop_back:
14257 MOVOU (R9), X4
14258 MOVOU 16(R9), X5
14259 MOVOA X4, (R12)
14260 MOVOA X5, 16(R12)
14261 ADDQ $0x20, R12
14262 ADDQ $0x20, R9
14263 ADDQ $0x20, R11
14264 DECQ R10
14265 JNA emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm8Blarge_big_loop_back
14266
14267emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32:
14268 MOVOU -32(R8)(R11*1), X4
14269 MOVOU -16(R8)(R11*1), X5
14270 MOVOA X4, -32(AX)(R11*1)
14271 MOVOA X5, -16(AX)(R11*1)
14272 ADDQ $0x20, R11
14273 CMPQ DI, R11
14274 JAE emit_lit_memmove_long_repeat_emit_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32
14275 MOVOU X0, (AX)
14276 MOVOU X1, 16(AX)
14277 MOVOU X2, -32(AX)(DI*1)
14278 MOVOU X3, -16(AX)(DI*1)
14279 MOVQ BX, AX
14280
14281emit_literal_done_repeat_emit_encodeSnappyBlockAsm8B:
14282 ADDL $0x05, CX
14283 MOVL CX, BX
14284 SUBL 16(SP), BX
14285 MOVQ src_len+32(FP), DI
14286 SUBL CX, DI
14287 LEAQ (DX)(CX*1), R8
14288 LEAQ (DX)(BX*1), BX
14289
14290 // matchLen
14291 XORL R10, R10
14292
14293matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm8B:
14294 CMPL DI, $0x10
14295 JB matchlen_match8_repeat_extend_encodeSnappyBlockAsm8B
14296 MOVQ (R8)(R10*1), R9
14297 MOVQ 8(R8)(R10*1), R11
14298 XORQ (BX)(R10*1), R9
14299 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm8B
14300 XORQ 8(BX)(R10*1), R11
14301 JNZ matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm8B
14302 LEAL -16(DI), DI
14303 LEAL 16(R10), R10
14304 JMP matchlen_loopback_16_repeat_extend_encodeSnappyBlockAsm8B
14305
14306matchlen_bsf_16repeat_extend_encodeSnappyBlockAsm8B:
14307#ifdef GOAMD64_v3
14308 TZCNTQ R11, R11
14309
14310#else
14311 BSFQ R11, R11
14312
14313#endif
14314 SARQ $0x03, R11
14315 LEAL 8(R10)(R11*1), R10
14316 JMP repeat_extend_forward_end_encodeSnappyBlockAsm8B
14317
14318matchlen_match8_repeat_extend_encodeSnappyBlockAsm8B:
14319 CMPL DI, $0x08
14320 JB matchlen_match4_repeat_extend_encodeSnappyBlockAsm8B
14321 MOVQ (R8)(R10*1), R9
14322 XORQ (BX)(R10*1), R9
14323 JNZ matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm8B
14324 LEAL -8(DI), DI
14325 LEAL 8(R10), R10
14326 JMP matchlen_match4_repeat_extend_encodeSnappyBlockAsm8B
14327
14328matchlen_bsf_8_repeat_extend_encodeSnappyBlockAsm8B:
14329#ifdef GOAMD64_v3
14330 TZCNTQ R9, R9
14331
14332#else
14333 BSFQ R9, R9
14334
14335#endif
14336 SARQ $0x03, R9
14337 LEAL (R10)(R9*1), R10
14338 JMP repeat_extend_forward_end_encodeSnappyBlockAsm8B
14339
14340matchlen_match4_repeat_extend_encodeSnappyBlockAsm8B:
14341 CMPL DI, $0x04
14342 JB matchlen_match2_repeat_extend_encodeSnappyBlockAsm8B
14343 MOVL (R8)(R10*1), R9
14344 CMPL (BX)(R10*1), R9
14345 JNE matchlen_match2_repeat_extend_encodeSnappyBlockAsm8B
14346 LEAL -4(DI), DI
14347 LEAL 4(R10), R10
14348
14349matchlen_match2_repeat_extend_encodeSnappyBlockAsm8B:
14350 CMPL DI, $0x01
14351 JE matchlen_match1_repeat_extend_encodeSnappyBlockAsm8B
14352 JB repeat_extend_forward_end_encodeSnappyBlockAsm8B
14353 MOVW (R8)(R10*1), R9
14354 CMPW (BX)(R10*1), R9
14355 JNE matchlen_match1_repeat_extend_encodeSnappyBlockAsm8B
14356 LEAL 2(R10), R10
14357 SUBL $0x02, DI
14358 JZ repeat_extend_forward_end_encodeSnappyBlockAsm8B
14359
14360matchlen_match1_repeat_extend_encodeSnappyBlockAsm8B:
14361 MOVB (R8)(R10*1), R9
14362 CMPB (BX)(R10*1), R9
14363 JNE repeat_extend_forward_end_encodeSnappyBlockAsm8B
14364 LEAL 1(R10), R10
14365
14366repeat_extend_forward_end_encodeSnappyBlockAsm8B:
14367 ADDL R10, CX
14368 MOVL CX, BX
14369 SUBL SI, BX
14370 MOVL 16(SP), SI
14371
14372 // emitCopy
14373two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm8B:
14374 CMPL BX, $0x40
14375 JBE two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm8B
14376 MOVB $0xee, (AX)
14377 MOVW SI, 1(AX)
14378 LEAL -60(BX), BX
14379 ADDQ $0x03, AX
14380 JMP two_byte_offset_repeat_as_copy_encodeSnappyBlockAsm8B
14381
14382two_byte_offset_short_repeat_as_copy_encodeSnappyBlockAsm8B:
14383 MOVL BX, DI
14384 SHLL $0x02, DI
14385 CMPL BX, $0x0c
14386 JAE emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm8B
14387 LEAL -15(DI), DI
14388 MOVB SI, 1(AX)
14389 SHRL $0x08, SI
14390 SHLL $0x05, SI
14391 ORL SI, DI
14392 MOVB DI, (AX)
14393 ADDQ $0x02, AX
14394 JMP repeat_end_emit_encodeSnappyBlockAsm8B
14395
14396emit_copy_three_repeat_as_copy_encodeSnappyBlockAsm8B:
14397 LEAL -2(DI), DI
14398 MOVB DI, (AX)
14399 MOVW SI, 1(AX)
14400 ADDQ $0x03, AX
14401
14402repeat_end_emit_encodeSnappyBlockAsm8B:
14403 MOVL CX, 12(SP)
14404 JMP search_loop_encodeSnappyBlockAsm8B
14405
14406no_repeat_found_encodeSnappyBlockAsm8B:
14407 CMPL (DX)(BX*1), SI
14408 JEQ candidate_match_encodeSnappyBlockAsm8B
14409 SHRQ $0x08, SI
14410 MOVL 24(SP)(R9*4), BX
14411 LEAL 2(CX), R8
14412 CMPL (DX)(DI*1), SI
14413 JEQ candidate2_match_encodeSnappyBlockAsm8B
14414 MOVL R8, 24(SP)(R9*4)
14415 SHRQ $0x08, SI
14416 CMPL (DX)(BX*1), SI
14417 JEQ candidate3_match_encodeSnappyBlockAsm8B
14418 MOVL 20(SP), CX
14419 JMP search_loop_encodeSnappyBlockAsm8B
14420
14421candidate3_match_encodeSnappyBlockAsm8B:
14422 ADDL $0x02, CX
14423 JMP candidate_match_encodeSnappyBlockAsm8B
14424
14425candidate2_match_encodeSnappyBlockAsm8B:
14426 MOVL R8, 24(SP)(R9*4)
14427 INCL CX
14428 MOVL DI, BX
14429
14430candidate_match_encodeSnappyBlockAsm8B:
14431 MOVL 12(SP), SI
14432 TESTL BX, BX
14433 JZ match_extend_back_end_encodeSnappyBlockAsm8B
14434
14435match_extend_back_loop_encodeSnappyBlockAsm8B:
14436 CMPL CX, SI
14437 JBE match_extend_back_end_encodeSnappyBlockAsm8B
14438 MOVB -1(DX)(BX*1), DI
14439 MOVB -1(DX)(CX*1), R8
14440 CMPB DI, R8
14441 JNE match_extend_back_end_encodeSnappyBlockAsm8B
14442 LEAL -1(CX), CX
14443 DECL BX
14444 JZ match_extend_back_end_encodeSnappyBlockAsm8B
14445 JMP match_extend_back_loop_encodeSnappyBlockAsm8B
14446
14447match_extend_back_end_encodeSnappyBlockAsm8B:
14448 MOVL CX, SI
14449 SUBL 12(SP), SI
14450 LEAQ 3(AX)(SI*1), SI
14451 CMPQ SI, (SP)
14452 JB match_dst_size_check_encodeSnappyBlockAsm8B
14453 MOVQ $0x00000000, ret+48(FP)
14454 RET
14455
14456match_dst_size_check_encodeSnappyBlockAsm8B:
14457 MOVL CX, SI
14458 MOVL 12(SP), DI
14459 CMPL DI, SI
14460 JEQ emit_literal_done_match_emit_encodeSnappyBlockAsm8B
14461 MOVL SI, R8
14462 MOVL SI, 12(SP)
14463 LEAQ (DX)(DI*1), SI
14464 SUBL DI, R8
14465 LEAL -1(R8), DI
14466 CMPL DI, $0x3c
14467 JB one_byte_match_emit_encodeSnappyBlockAsm8B
14468 CMPL DI, $0x00000100
14469 JB two_bytes_match_emit_encodeSnappyBlockAsm8B
14470 JB three_bytes_match_emit_encodeSnappyBlockAsm8B
14471
14472three_bytes_match_emit_encodeSnappyBlockAsm8B:
14473 MOVB $0xf4, (AX)
14474 MOVW DI, 1(AX)
14475 ADDQ $0x03, AX
14476 JMP memmove_long_match_emit_encodeSnappyBlockAsm8B
14477
14478two_bytes_match_emit_encodeSnappyBlockAsm8B:
14479 MOVB $0xf0, (AX)
14480 MOVB DI, 1(AX)
14481 ADDQ $0x02, AX
14482 CMPL DI, $0x40
14483 JB memmove_match_emit_encodeSnappyBlockAsm8B
14484 JMP memmove_long_match_emit_encodeSnappyBlockAsm8B
14485
14486one_byte_match_emit_encodeSnappyBlockAsm8B:
14487 SHLB $0x02, DI
14488 MOVB DI, (AX)
14489 ADDQ $0x01, AX
14490
14491memmove_match_emit_encodeSnappyBlockAsm8B:
14492 LEAQ (AX)(R8*1), DI
14493
14494 // genMemMoveShort
14495 CMPQ R8, $0x08
14496 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_8
14497 CMPQ R8, $0x10
14498 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_8through16
14499 CMPQ R8, $0x20
14500 JBE emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_17through32
14501 JMP emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_33through64
14502
14503emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_8:
14504 MOVQ (SI), R9
14505 MOVQ R9, (AX)
14506 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm8B
14507
14508emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_8through16:
14509 MOVQ (SI), R9
14510 MOVQ -8(SI)(R8*1), SI
14511 MOVQ R9, (AX)
14512 MOVQ SI, -8(AX)(R8*1)
14513 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm8B
14514
14515emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_17through32:
14516 MOVOU (SI), X0
14517 MOVOU -16(SI)(R8*1), X1
14518 MOVOU X0, (AX)
14519 MOVOU X1, -16(AX)(R8*1)
14520 JMP memmove_end_copy_match_emit_encodeSnappyBlockAsm8B
14521
14522emit_lit_memmove_match_emit_encodeSnappyBlockAsm8B_memmove_move_33through64:
14523 MOVOU (SI), X0
14524 MOVOU 16(SI), X1
14525 MOVOU -32(SI)(R8*1), X2
14526 MOVOU -16(SI)(R8*1), X3
14527 MOVOU X0, (AX)
14528 MOVOU X1, 16(AX)
14529 MOVOU X2, -32(AX)(R8*1)
14530 MOVOU X3, -16(AX)(R8*1)
14531
14532memmove_end_copy_match_emit_encodeSnappyBlockAsm8B:
14533 MOVQ DI, AX
14534 JMP emit_literal_done_match_emit_encodeSnappyBlockAsm8B
14535
14536memmove_long_match_emit_encodeSnappyBlockAsm8B:
14537 LEAQ (AX)(R8*1), DI
14538
14539 // genMemMoveLong
14540 MOVOU (SI), X0
14541 MOVOU 16(SI), X1
14542 MOVOU -32(SI)(R8*1), X2
14543 MOVOU -16(SI)(R8*1), X3
14544 MOVQ R8, R10
14545 SHRQ $0x05, R10
14546 MOVQ AX, R9
14547 ANDL $0x0000001f, R9
14548 MOVQ $0x00000040, R11
14549 SUBQ R9, R11
14550 DECQ R10
14551 JA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32
14552 LEAQ -32(SI)(R11*1), R9
14553 LEAQ -32(AX)(R11*1), R12
14554
14555emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm8Blarge_big_loop_back:
14556 MOVOU (R9), X4
14557 MOVOU 16(R9), X5
14558 MOVOA X4, (R12)
14559 MOVOA X5, 16(R12)
14560 ADDQ $0x20, R12
14561 ADDQ $0x20, R9
14562 ADDQ $0x20, R11
14563 DECQ R10
14564 JNA emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm8Blarge_big_loop_back
14565
14566emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32:
14567 MOVOU -32(SI)(R11*1), X4
14568 MOVOU -16(SI)(R11*1), X5
14569 MOVOA X4, -32(AX)(R11*1)
14570 MOVOA X5, -16(AX)(R11*1)
14571 ADDQ $0x20, R11
14572 CMPQ R8, R11
14573 JAE emit_lit_memmove_long_match_emit_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32
14574 MOVOU X0, (AX)
14575 MOVOU X1, 16(AX)
14576 MOVOU X2, -32(AX)(R8*1)
14577 MOVOU X3, -16(AX)(R8*1)
14578 MOVQ DI, AX
14579
14580emit_literal_done_match_emit_encodeSnappyBlockAsm8B:
14581match_nolit_loop_encodeSnappyBlockAsm8B:
14582 MOVL CX, SI
14583 SUBL BX, SI
14584 MOVL SI, 16(SP)
14585 ADDL $0x04, CX
14586 ADDL $0x04, BX
14587 MOVQ src_len+32(FP), SI
14588 SUBL CX, SI
14589 LEAQ (DX)(CX*1), DI
14590 LEAQ (DX)(BX*1), BX
14591
14592 // matchLen
14593 XORL R9, R9
14594
14595matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm8B:
14596 CMPL SI, $0x10
14597 JB matchlen_match8_match_nolit_encodeSnappyBlockAsm8B
14598 MOVQ (DI)(R9*1), R8
14599 MOVQ 8(DI)(R9*1), R10
14600 XORQ (BX)(R9*1), R8
14601 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm8B
14602 XORQ 8(BX)(R9*1), R10
14603 JNZ matchlen_bsf_16match_nolit_encodeSnappyBlockAsm8B
14604 LEAL -16(SI), SI
14605 LEAL 16(R9), R9
14606 JMP matchlen_loopback_16_match_nolit_encodeSnappyBlockAsm8B
14607
14608matchlen_bsf_16match_nolit_encodeSnappyBlockAsm8B:
14609#ifdef GOAMD64_v3
14610 TZCNTQ R10, R10
14611
14612#else
14613 BSFQ R10, R10
14614
14615#endif
14616 SARQ $0x03, R10
14617 LEAL 8(R9)(R10*1), R9
14618 JMP match_nolit_end_encodeSnappyBlockAsm8B
14619
14620matchlen_match8_match_nolit_encodeSnappyBlockAsm8B:
14621 CMPL SI, $0x08
14622 JB matchlen_match4_match_nolit_encodeSnappyBlockAsm8B
14623 MOVQ (DI)(R9*1), R8
14624 XORQ (BX)(R9*1), R8
14625 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm8B
14626 LEAL -8(SI), SI
14627 LEAL 8(R9), R9
14628 JMP matchlen_match4_match_nolit_encodeSnappyBlockAsm8B
14629
14630matchlen_bsf_8_match_nolit_encodeSnappyBlockAsm8B:
14631#ifdef GOAMD64_v3
14632 TZCNTQ R8, R8
14633
14634#else
14635 BSFQ R8, R8
14636
14637#endif
14638 SARQ $0x03, R8
14639 LEAL (R9)(R8*1), R9
14640 JMP match_nolit_end_encodeSnappyBlockAsm8B
14641
14642matchlen_match4_match_nolit_encodeSnappyBlockAsm8B:
14643 CMPL SI, $0x04
14644 JB matchlen_match2_match_nolit_encodeSnappyBlockAsm8B
14645 MOVL (DI)(R9*1), R8
14646 CMPL (BX)(R9*1), R8
14647 JNE matchlen_match2_match_nolit_encodeSnappyBlockAsm8B
14648 LEAL -4(SI), SI
14649 LEAL 4(R9), R9
14650
14651matchlen_match2_match_nolit_encodeSnappyBlockAsm8B:
14652 CMPL SI, $0x01
14653 JE matchlen_match1_match_nolit_encodeSnappyBlockAsm8B
14654 JB match_nolit_end_encodeSnappyBlockAsm8B
14655 MOVW (DI)(R9*1), R8
14656 CMPW (BX)(R9*1), R8
14657 JNE matchlen_match1_match_nolit_encodeSnappyBlockAsm8B
14658 LEAL 2(R9), R9
14659 SUBL $0x02, SI
14660 JZ match_nolit_end_encodeSnappyBlockAsm8B
14661
14662matchlen_match1_match_nolit_encodeSnappyBlockAsm8B:
14663 MOVB (DI)(R9*1), R8
14664 CMPB (BX)(R9*1), R8
14665 JNE match_nolit_end_encodeSnappyBlockAsm8B
14666 LEAL 1(R9), R9
14667
14668match_nolit_end_encodeSnappyBlockAsm8B:
14669 ADDL R9, CX
14670 MOVL 16(SP), BX
14671 ADDL $0x04, R9
14672 MOVL CX, 12(SP)
14673
14674 // emitCopy
14675two_byte_offset_match_nolit_encodeSnappyBlockAsm8B:
14676 CMPL R9, $0x40
14677 JBE two_byte_offset_short_match_nolit_encodeSnappyBlockAsm8B
14678 MOVB $0xee, (AX)
14679 MOVW BX, 1(AX)
14680 LEAL -60(R9), R9
14681 ADDQ $0x03, AX
14682 JMP two_byte_offset_match_nolit_encodeSnappyBlockAsm8B
14683
14684two_byte_offset_short_match_nolit_encodeSnappyBlockAsm8B:
14685 MOVL R9, SI
14686 SHLL $0x02, SI
14687 CMPL R9, $0x0c
14688 JAE emit_copy_three_match_nolit_encodeSnappyBlockAsm8B
14689 LEAL -15(SI), SI
14690 MOVB BL, 1(AX)
14691 SHRL $0x08, BX
14692 SHLL $0x05, BX
14693 ORL BX, SI
14694 MOVB SI, (AX)
14695 ADDQ $0x02, AX
14696 JMP match_nolit_emitcopy_end_encodeSnappyBlockAsm8B
14697
14698emit_copy_three_match_nolit_encodeSnappyBlockAsm8B:
14699 LEAL -2(SI), SI
14700 MOVB SI, (AX)
14701 MOVW BX, 1(AX)
14702 ADDQ $0x03, AX
14703
14704match_nolit_emitcopy_end_encodeSnappyBlockAsm8B:
14705 CMPL CX, 8(SP)
14706 JAE emit_remainder_encodeSnappyBlockAsm8B
14707 MOVQ -2(DX)(CX*1), SI
14708 CMPQ AX, (SP)
14709 JB match_nolit_dst_ok_encodeSnappyBlockAsm8B
14710 MOVQ $0x00000000, ret+48(FP)
14711 RET
14712
14713match_nolit_dst_ok_encodeSnappyBlockAsm8B:
14714 MOVQ $0x9e3779b1, R8
14715 MOVQ SI, DI
14716 SHRQ $0x10, SI
14717 MOVQ SI, BX
14718 SHLQ $0x20, DI
14719 IMULQ R8, DI
14720 SHRQ $0x38, DI
14721 SHLQ $0x20, BX
14722 IMULQ R8, BX
14723 SHRQ $0x38, BX
14724 LEAL -2(CX), R8
14725 LEAQ 24(SP)(BX*4), R9
14726 MOVL (R9), BX
14727 MOVL R8, 24(SP)(DI*4)
14728 MOVL CX, (R9)
14729 CMPL (DX)(BX*1), SI
14730 JEQ match_nolit_loop_encodeSnappyBlockAsm8B
14731 INCL CX
14732 JMP search_loop_encodeSnappyBlockAsm8B
14733
14734emit_remainder_encodeSnappyBlockAsm8B:
14735 MOVQ src_len+32(FP), CX
14736 SUBL 12(SP), CX
14737 LEAQ 3(AX)(CX*1), CX
14738 CMPQ CX, (SP)
14739 JB emit_remainder_ok_encodeSnappyBlockAsm8B
14740 MOVQ $0x00000000, ret+48(FP)
14741 RET
14742
14743emit_remainder_ok_encodeSnappyBlockAsm8B:
14744 MOVQ src_len+32(FP), CX
14745 MOVL 12(SP), BX
14746 CMPL BX, CX
14747 JEQ emit_literal_done_emit_remainder_encodeSnappyBlockAsm8B
14748 MOVL CX, SI
14749 MOVL CX, 12(SP)
14750 LEAQ (DX)(BX*1), CX
14751 SUBL BX, SI
14752 LEAL -1(SI), DX
14753 CMPL DX, $0x3c
14754 JB one_byte_emit_remainder_encodeSnappyBlockAsm8B
14755 CMPL DX, $0x00000100
14756 JB two_bytes_emit_remainder_encodeSnappyBlockAsm8B
14757 JB three_bytes_emit_remainder_encodeSnappyBlockAsm8B
14758
14759three_bytes_emit_remainder_encodeSnappyBlockAsm8B:
14760 MOVB $0xf4, (AX)
14761 MOVW DX, 1(AX)
14762 ADDQ $0x03, AX
14763 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm8B
14764
14765two_bytes_emit_remainder_encodeSnappyBlockAsm8B:
14766 MOVB $0xf0, (AX)
14767 MOVB DL, 1(AX)
14768 ADDQ $0x02, AX
14769 CMPL DX, $0x40
14770 JB memmove_emit_remainder_encodeSnappyBlockAsm8B
14771 JMP memmove_long_emit_remainder_encodeSnappyBlockAsm8B
14772
14773one_byte_emit_remainder_encodeSnappyBlockAsm8B:
14774 SHLB $0x02, DL
14775 MOVB DL, (AX)
14776 ADDQ $0x01, AX
14777
14778memmove_emit_remainder_encodeSnappyBlockAsm8B:
14779 LEAQ (AX)(SI*1), DX
14780 MOVL SI, BX
14781
14782 // genMemMoveShort
14783 CMPQ BX, $0x03
14784 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_1or2
14785 JE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_3
14786 CMPQ BX, $0x08
14787 JB emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_4through7
14788 CMPQ BX, $0x10
14789 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_8through16
14790 CMPQ BX, $0x20
14791 JBE emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_17through32
14792 JMP emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_33through64
14793
14794emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_1or2:
14795 MOVB (CX), SI
14796 MOVB -1(CX)(BX*1), CL
14797 MOVB SI, (AX)
14798 MOVB CL, -1(AX)(BX*1)
14799 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm8B
14800
14801emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_3:
14802 MOVW (CX), SI
14803 MOVB 2(CX), CL
14804 MOVW SI, (AX)
14805 MOVB CL, 2(AX)
14806 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm8B
14807
14808emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_4through7:
14809 MOVL (CX), SI
14810 MOVL -4(CX)(BX*1), CX
14811 MOVL SI, (AX)
14812 MOVL CX, -4(AX)(BX*1)
14813 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm8B
14814
14815emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_8through16:
14816 MOVQ (CX), SI
14817 MOVQ -8(CX)(BX*1), CX
14818 MOVQ SI, (AX)
14819 MOVQ CX, -8(AX)(BX*1)
14820 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm8B
14821
14822emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_17through32:
14823 MOVOU (CX), X0
14824 MOVOU -16(CX)(BX*1), X1
14825 MOVOU X0, (AX)
14826 MOVOU X1, -16(AX)(BX*1)
14827 JMP memmove_end_copy_emit_remainder_encodeSnappyBlockAsm8B
14828
14829emit_lit_memmove_emit_remainder_encodeSnappyBlockAsm8B_memmove_move_33through64:
14830 MOVOU (CX), X0
14831 MOVOU 16(CX), X1
14832 MOVOU -32(CX)(BX*1), X2
14833 MOVOU -16(CX)(BX*1), X3
14834 MOVOU X0, (AX)
14835 MOVOU X1, 16(AX)
14836 MOVOU X2, -32(AX)(BX*1)
14837 MOVOU X3, -16(AX)(BX*1)
14838
14839memmove_end_copy_emit_remainder_encodeSnappyBlockAsm8B:
14840 MOVQ DX, AX
14841 JMP emit_literal_done_emit_remainder_encodeSnappyBlockAsm8B
14842
14843memmove_long_emit_remainder_encodeSnappyBlockAsm8B:
14844 LEAQ (AX)(SI*1), DX
14845 MOVL SI, BX
14846
14847 // genMemMoveLong
14848 MOVOU (CX), X0
14849 MOVOU 16(CX), X1
14850 MOVOU -32(CX)(BX*1), X2
14851 MOVOU -16(CX)(BX*1), X3
14852 MOVQ BX, DI
14853 SHRQ $0x05, DI
14854 MOVQ AX, SI
14855 ANDL $0x0000001f, SI
14856 MOVQ $0x00000040, R8
14857 SUBQ SI, R8
14858 DECQ DI
14859 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32
14860 LEAQ -32(CX)(R8*1), SI
14861 LEAQ -32(AX)(R8*1), R9
14862
14863emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm8Blarge_big_loop_back:
14864 MOVOU (SI), X4
14865 MOVOU 16(SI), X5
14866 MOVOA X4, (R9)
14867 MOVOA X5, 16(R9)
14868 ADDQ $0x20, R9
14869 ADDQ $0x20, SI
14870 ADDQ $0x20, R8
14871 DECQ DI
14872 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm8Blarge_big_loop_back
14873
14874emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32:
14875 MOVOU -32(CX)(R8*1), X4
14876 MOVOU -16(CX)(R8*1), X5
14877 MOVOA X4, -32(AX)(R8*1)
14878 MOVOA X5, -16(AX)(R8*1)
14879 ADDQ $0x20, R8
14880 CMPQ BX, R8
14881 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBlockAsm8Blarge_forward_sse_loop_32
14882 MOVOU X0, (AX)
14883 MOVOU X1, 16(AX)
14884 MOVOU X2, -32(AX)(BX*1)
14885 MOVOU X3, -16(AX)(BX*1)
14886 MOVQ DX, AX
14887
14888emit_literal_done_emit_remainder_encodeSnappyBlockAsm8B:
14889 MOVQ dst_base+0(FP), CX
14890 SUBQ CX, AX
14891 MOVQ AX, ret+48(FP)
14892 RET
14893
14894// func encodeSnappyBetterBlockAsm(dst []byte, src []byte) int
14895// Requires: BMI, SSE2
14896TEXT ·encodeSnappyBetterBlockAsm(SB), $589848-56
14897 MOVQ dst_base+0(FP), AX
14898 MOVQ $0x00001200, CX
14899 LEAQ 24(SP), DX
14900 PXOR X0, X0
14901
14902zero_loop_encodeSnappyBetterBlockAsm:
14903 MOVOU X0, (DX)
14904 MOVOU X0, 16(DX)
14905 MOVOU X0, 32(DX)
14906 MOVOU X0, 48(DX)
14907 MOVOU X0, 64(DX)
14908 MOVOU X0, 80(DX)
14909 MOVOU X0, 96(DX)
14910 MOVOU X0, 112(DX)
14911 ADDQ $0x80, DX
14912 DECQ CX
14913 JNZ zero_loop_encodeSnappyBetterBlockAsm
14914 MOVL $0x00000000, 12(SP)
14915 MOVQ src_len+32(FP), CX
14916 LEAQ -9(CX), DX
14917 LEAQ -8(CX), BX
14918 MOVL BX, 8(SP)
14919 SHRQ $0x05, CX
14920 SUBL CX, DX
14921 LEAQ (AX)(DX*1), DX
14922 MOVQ DX, (SP)
14923 MOVL $0x00000001, CX
14924 MOVL $0x00000000, 16(SP)
14925 MOVQ src_base+24(FP), DX
14926
14927search_loop_encodeSnappyBetterBlockAsm:
14928 MOVL CX, BX
14929 SUBL 12(SP), BX
14930 SHRL $0x07, BX
14931 CMPL BX, $0x63
14932 JBE check_maxskip_ok_encodeSnappyBetterBlockAsm
14933 LEAL 100(CX), BX
14934 JMP check_maxskip_cont_encodeSnappyBetterBlockAsm
14935
14936check_maxskip_ok_encodeSnappyBetterBlockAsm:
14937 LEAL 1(CX)(BX*1), BX
14938
14939check_maxskip_cont_encodeSnappyBetterBlockAsm:
14940 CMPL BX, 8(SP)
14941 JAE emit_remainder_encodeSnappyBetterBlockAsm
14942 MOVQ (DX)(CX*1), SI
14943 MOVL BX, 20(SP)
14944 MOVQ $0x00cf1bbcdcbfa563, R8
14945 MOVQ $0x9e3779b1, BX
14946 MOVQ SI, R9
14947 MOVQ SI, R10
14948 SHLQ $0x08, R9
14949 IMULQ R8, R9
14950 SHRQ $0x2f, R9
14951 SHLQ $0x20, R10
14952 IMULQ BX, R10
14953 SHRQ $0x32, R10
14954 MOVL 24(SP)(R9*4), BX
14955 MOVL 524312(SP)(R10*4), DI
14956 MOVL CX, 24(SP)(R9*4)
14957 MOVL CX, 524312(SP)(R10*4)
14958 MOVQ (DX)(BX*1), R9
14959 MOVQ (DX)(DI*1), R10
14960 CMPQ R9, SI
14961 JEQ candidate_match_encodeSnappyBetterBlockAsm
14962 CMPQ R10, SI
14963 JNE no_short_found_encodeSnappyBetterBlockAsm
14964 MOVL DI, BX
14965 JMP candidate_match_encodeSnappyBetterBlockAsm
14966
14967no_short_found_encodeSnappyBetterBlockAsm:
14968 CMPL R9, SI
14969 JEQ candidate_match_encodeSnappyBetterBlockAsm
14970 CMPL R10, SI
14971 JEQ candidateS_match_encodeSnappyBetterBlockAsm
14972 MOVL 20(SP), CX
14973 JMP search_loop_encodeSnappyBetterBlockAsm
14974
14975candidateS_match_encodeSnappyBetterBlockAsm:
14976 SHRQ $0x08, SI
14977 MOVQ SI, R9
14978 SHLQ $0x08, R9
14979 IMULQ R8, R9
14980 SHRQ $0x2f, R9
14981 MOVL 24(SP)(R9*4), BX
14982 INCL CX
14983 MOVL CX, 24(SP)(R9*4)
14984 CMPL (DX)(BX*1), SI
14985 JEQ candidate_match_encodeSnappyBetterBlockAsm
14986 DECL CX
14987 MOVL DI, BX
14988
14989candidate_match_encodeSnappyBetterBlockAsm:
14990 MOVL 12(SP), SI
14991 TESTL BX, BX
14992 JZ match_extend_back_end_encodeSnappyBetterBlockAsm
14993
14994match_extend_back_loop_encodeSnappyBetterBlockAsm:
14995 CMPL CX, SI
14996 JBE match_extend_back_end_encodeSnappyBetterBlockAsm
14997 MOVB -1(DX)(BX*1), DI
14998 MOVB -1(DX)(CX*1), R8
14999 CMPB DI, R8
15000 JNE match_extend_back_end_encodeSnappyBetterBlockAsm
15001 LEAL -1(CX), CX
15002 DECL BX
15003 JZ match_extend_back_end_encodeSnappyBetterBlockAsm
15004 JMP match_extend_back_loop_encodeSnappyBetterBlockAsm
15005
15006match_extend_back_end_encodeSnappyBetterBlockAsm:
15007 MOVL CX, SI
15008 SUBL 12(SP), SI
15009 LEAQ 5(AX)(SI*1), SI
15010 CMPQ SI, (SP)
15011 JB match_dst_size_check_encodeSnappyBetterBlockAsm
15012 MOVQ $0x00000000, ret+48(FP)
15013 RET
15014
15015match_dst_size_check_encodeSnappyBetterBlockAsm:
15016 MOVL CX, SI
15017 ADDL $0x04, CX
15018 ADDL $0x04, BX
15019 MOVQ src_len+32(FP), DI
15020 SUBL CX, DI
15021 LEAQ (DX)(CX*1), R8
15022 LEAQ (DX)(BX*1), R9
15023
15024 // matchLen
15025 XORL R11, R11
15026
15027matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm:
15028 CMPL DI, $0x10
15029 JB matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm
15030 MOVQ (R8)(R11*1), R10
15031 MOVQ 8(R8)(R11*1), R12
15032 XORQ (R9)(R11*1), R10
15033 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm
15034 XORQ 8(R9)(R11*1), R12
15035 JNZ matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm
15036 LEAL -16(DI), DI
15037 LEAL 16(R11), R11
15038 JMP matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm
15039
15040matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm:
15041#ifdef GOAMD64_v3
15042 TZCNTQ R12, R12
15043
15044#else
15045 BSFQ R12, R12
15046
15047#endif
15048 SARQ $0x03, R12
15049 LEAL 8(R11)(R12*1), R11
15050 JMP match_nolit_end_encodeSnappyBetterBlockAsm
15051
15052matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm:
15053 CMPL DI, $0x08
15054 JB matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm
15055 MOVQ (R8)(R11*1), R10
15056 XORQ (R9)(R11*1), R10
15057 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm
15058 LEAL -8(DI), DI
15059 LEAL 8(R11), R11
15060 JMP matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm
15061
15062matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm:
15063#ifdef GOAMD64_v3
15064 TZCNTQ R10, R10
15065
15066#else
15067 BSFQ R10, R10
15068
15069#endif
15070 SARQ $0x03, R10
15071 LEAL (R11)(R10*1), R11
15072 JMP match_nolit_end_encodeSnappyBetterBlockAsm
15073
15074matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm:
15075 CMPL DI, $0x04
15076 JB matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm
15077 MOVL (R8)(R11*1), R10
15078 CMPL (R9)(R11*1), R10
15079 JNE matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm
15080 LEAL -4(DI), DI
15081 LEAL 4(R11), R11
15082
15083matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm:
15084 CMPL DI, $0x01
15085 JE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm
15086 JB match_nolit_end_encodeSnappyBetterBlockAsm
15087 MOVW (R8)(R11*1), R10
15088 CMPW (R9)(R11*1), R10
15089 JNE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm
15090 LEAL 2(R11), R11
15091 SUBL $0x02, DI
15092 JZ match_nolit_end_encodeSnappyBetterBlockAsm
15093
15094matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm:
15095 MOVB (R8)(R11*1), R10
15096 CMPB (R9)(R11*1), R10
15097 JNE match_nolit_end_encodeSnappyBetterBlockAsm
15098 LEAL 1(R11), R11
15099
15100match_nolit_end_encodeSnappyBetterBlockAsm:
15101 MOVL CX, DI
15102 SUBL BX, DI
15103
15104 // Check if repeat
15105 CMPL R11, $0x01
15106 JA match_length_ok_encodeSnappyBetterBlockAsm
15107 CMPL DI, $0x0000ffff
15108 JBE match_length_ok_encodeSnappyBetterBlockAsm
15109 MOVL 20(SP), CX
15110 INCL CX
15111 JMP search_loop_encodeSnappyBetterBlockAsm
15112
15113match_length_ok_encodeSnappyBetterBlockAsm:
15114 MOVL DI, 16(SP)
15115 MOVL 12(SP), BX
15116 CMPL BX, SI
15117 JEQ emit_literal_done_match_emit_encodeSnappyBetterBlockAsm
15118 MOVL SI, R8
15119 MOVL SI, 12(SP)
15120 LEAQ (DX)(BX*1), R9
15121 SUBL BX, R8
15122 LEAL -1(R8), BX
15123 CMPL BX, $0x3c
15124 JB one_byte_match_emit_encodeSnappyBetterBlockAsm
15125 CMPL BX, $0x00000100
15126 JB two_bytes_match_emit_encodeSnappyBetterBlockAsm
15127 CMPL BX, $0x00010000
15128 JB three_bytes_match_emit_encodeSnappyBetterBlockAsm
15129 CMPL BX, $0x01000000
15130 JB four_bytes_match_emit_encodeSnappyBetterBlockAsm
15131 MOVB $0xfc, (AX)
15132 MOVL BX, 1(AX)
15133 ADDQ $0x05, AX
15134 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm
15135
15136four_bytes_match_emit_encodeSnappyBetterBlockAsm:
15137 MOVL BX, R10
15138 SHRL $0x10, R10
15139 MOVB $0xf8, (AX)
15140 MOVW BX, 1(AX)
15141 MOVB R10, 3(AX)
15142 ADDQ $0x04, AX
15143 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm
15144
15145three_bytes_match_emit_encodeSnappyBetterBlockAsm:
15146 MOVB $0xf4, (AX)
15147 MOVW BX, 1(AX)
15148 ADDQ $0x03, AX
15149 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm
15150
15151two_bytes_match_emit_encodeSnappyBetterBlockAsm:
15152 MOVB $0xf0, (AX)
15153 MOVB BL, 1(AX)
15154 ADDQ $0x02, AX
15155 CMPL BX, $0x40
15156 JB memmove_match_emit_encodeSnappyBetterBlockAsm
15157 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm
15158
15159one_byte_match_emit_encodeSnappyBetterBlockAsm:
15160 SHLB $0x02, BL
15161 MOVB BL, (AX)
15162 ADDQ $0x01, AX
15163
15164memmove_match_emit_encodeSnappyBetterBlockAsm:
15165 LEAQ (AX)(R8*1), BX
15166
15167 // genMemMoveShort
15168 CMPQ R8, $0x08
15169 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_8
15170 CMPQ R8, $0x10
15171 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_8through16
15172 CMPQ R8, $0x20
15173 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_17through32
15174 JMP emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_33through64
15175
15176emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_8:
15177 MOVQ (R9), R10
15178 MOVQ R10, (AX)
15179 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm
15180
15181emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_8through16:
15182 MOVQ (R9), R10
15183 MOVQ -8(R9)(R8*1), R9
15184 MOVQ R10, (AX)
15185 MOVQ R9, -8(AX)(R8*1)
15186 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm
15187
15188emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_17through32:
15189 MOVOU (R9), X0
15190 MOVOU -16(R9)(R8*1), X1
15191 MOVOU X0, (AX)
15192 MOVOU X1, -16(AX)(R8*1)
15193 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm
15194
15195emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm_memmove_move_33through64:
15196 MOVOU (R9), X0
15197 MOVOU 16(R9), X1
15198 MOVOU -32(R9)(R8*1), X2
15199 MOVOU -16(R9)(R8*1), X3
15200 MOVOU X0, (AX)
15201 MOVOU X1, 16(AX)
15202 MOVOU X2, -32(AX)(R8*1)
15203 MOVOU X3, -16(AX)(R8*1)
15204
15205memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm:
15206 MOVQ BX, AX
15207 JMP emit_literal_done_match_emit_encodeSnappyBetterBlockAsm
15208
15209memmove_long_match_emit_encodeSnappyBetterBlockAsm:
15210 LEAQ (AX)(R8*1), BX
15211
15212 // genMemMoveLong
15213 MOVOU (R9), X0
15214 MOVOU 16(R9), X1
15215 MOVOU -32(R9)(R8*1), X2
15216 MOVOU -16(R9)(R8*1), X3
15217 MOVQ R8, R12
15218 SHRQ $0x05, R12
15219 MOVQ AX, R10
15220 ANDL $0x0000001f, R10
15221 MOVQ $0x00000040, R13
15222 SUBQ R10, R13
15223 DECQ R12
15224 JA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsmlarge_forward_sse_loop_32
15225 LEAQ -32(R9)(R13*1), R10
15226 LEAQ -32(AX)(R13*1), R14
15227
15228emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsmlarge_big_loop_back:
15229 MOVOU (R10), X4
15230 MOVOU 16(R10), X5
15231 MOVOA X4, (R14)
15232 MOVOA X5, 16(R14)
15233 ADDQ $0x20, R14
15234 ADDQ $0x20, R10
15235 ADDQ $0x20, R13
15236 DECQ R12
15237 JNA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsmlarge_big_loop_back
15238
15239emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsmlarge_forward_sse_loop_32:
15240 MOVOU -32(R9)(R13*1), X4
15241 MOVOU -16(R9)(R13*1), X5
15242 MOVOA X4, -32(AX)(R13*1)
15243 MOVOA X5, -16(AX)(R13*1)
15244 ADDQ $0x20, R13
15245 CMPQ R8, R13
15246 JAE emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsmlarge_forward_sse_loop_32
15247 MOVOU X0, (AX)
15248 MOVOU X1, 16(AX)
15249 MOVOU X2, -32(AX)(R8*1)
15250 MOVOU X3, -16(AX)(R8*1)
15251 MOVQ BX, AX
15252
15253emit_literal_done_match_emit_encodeSnappyBetterBlockAsm:
15254 ADDL R11, CX
15255 ADDL $0x04, R11
15256 MOVL CX, 12(SP)
15257
15258 // emitCopy
15259 CMPL DI, $0x00010000
15260 JB two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm
15261
15262four_bytes_loop_back_match_nolit_encodeSnappyBetterBlockAsm:
15263 CMPL R11, $0x40
15264 JBE four_bytes_remain_match_nolit_encodeSnappyBetterBlockAsm
15265 MOVB $0xff, (AX)
15266 MOVL DI, 1(AX)
15267 LEAL -64(R11), R11
15268 ADDQ $0x05, AX
15269 CMPL R11, $0x04
15270 JB four_bytes_remain_match_nolit_encodeSnappyBetterBlockAsm
15271 JMP four_bytes_loop_back_match_nolit_encodeSnappyBetterBlockAsm
15272
15273four_bytes_remain_match_nolit_encodeSnappyBetterBlockAsm:
15274 TESTL R11, R11
15275 JZ match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm
15276 XORL BX, BX
15277 LEAL -1(BX)(R11*4), R11
15278 MOVB R11, (AX)
15279 MOVL DI, 1(AX)
15280 ADDQ $0x05, AX
15281 JMP match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm
15282
15283two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm:
15284 CMPL R11, $0x40
15285 JBE two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm
15286 MOVB $0xee, (AX)
15287 MOVW DI, 1(AX)
15288 LEAL -60(R11), R11
15289 ADDQ $0x03, AX
15290 JMP two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm
15291
15292two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm:
15293 MOVL R11, BX
15294 SHLL $0x02, BX
15295 CMPL R11, $0x0c
15296 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm
15297 CMPL DI, $0x00000800
15298 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm
15299 LEAL -15(BX), BX
15300 MOVB DI, 1(AX)
15301 SHRL $0x08, DI
15302 SHLL $0x05, DI
15303 ORL DI, BX
15304 MOVB BL, (AX)
15305 ADDQ $0x02, AX
15306 JMP match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm
15307
15308emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm:
15309 LEAL -2(BX), BX
15310 MOVB BL, (AX)
15311 MOVW DI, 1(AX)
15312 ADDQ $0x03, AX
15313
15314match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm:
15315 CMPL CX, 8(SP)
15316 JAE emit_remainder_encodeSnappyBetterBlockAsm
15317 CMPQ AX, (SP)
15318 JB match_nolit_dst_ok_encodeSnappyBetterBlockAsm
15319 MOVQ $0x00000000, ret+48(FP)
15320 RET
15321
15322match_nolit_dst_ok_encodeSnappyBetterBlockAsm:
15323 MOVQ $0x00cf1bbcdcbfa563, BX
15324 MOVQ $0x9e3779b1, DI
15325 LEAQ 1(SI), SI
15326 LEAQ -2(CX), R8
15327 MOVQ (DX)(SI*1), R9
15328 MOVQ 1(DX)(SI*1), R10
15329 MOVQ (DX)(R8*1), R11
15330 MOVQ 1(DX)(R8*1), R12
15331 SHLQ $0x08, R9
15332 IMULQ BX, R9
15333 SHRQ $0x2f, R9
15334 SHLQ $0x20, R10
15335 IMULQ DI, R10
15336 SHRQ $0x32, R10
15337 SHLQ $0x08, R11
15338 IMULQ BX, R11
15339 SHRQ $0x2f, R11
15340 SHLQ $0x20, R12
15341 IMULQ DI, R12
15342 SHRQ $0x32, R12
15343 LEAQ 1(SI), DI
15344 LEAQ 1(R8), R13
15345 MOVL SI, 24(SP)(R9*4)
15346 MOVL R8, 24(SP)(R11*4)
15347 MOVL DI, 524312(SP)(R10*4)
15348 MOVL R13, 524312(SP)(R12*4)
15349 LEAQ 1(R8)(SI*1), DI
15350 SHRQ $0x01, DI
15351 ADDQ $0x01, SI
15352 SUBQ $0x01, R8
15353
15354index_loop_encodeSnappyBetterBlockAsm:
15355 CMPQ DI, R8
15356 JAE search_loop_encodeSnappyBetterBlockAsm
15357 MOVQ (DX)(SI*1), R9
15358 MOVQ (DX)(DI*1), R10
15359 SHLQ $0x08, R9
15360 IMULQ BX, R9
15361 SHRQ $0x2f, R9
15362 SHLQ $0x08, R10
15363 IMULQ BX, R10
15364 SHRQ $0x2f, R10
15365 MOVL SI, 24(SP)(R9*4)
15366 MOVL DI, 24(SP)(R10*4)
15367 ADDQ $0x02, SI
15368 ADDQ $0x02, DI
15369 JMP index_loop_encodeSnappyBetterBlockAsm
15370
15371emit_remainder_encodeSnappyBetterBlockAsm:
15372 MOVQ src_len+32(FP), CX
15373 SUBL 12(SP), CX
15374 LEAQ 5(AX)(CX*1), CX
15375 CMPQ CX, (SP)
15376 JB emit_remainder_ok_encodeSnappyBetterBlockAsm
15377 MOVQ $0x00000000, ret+48(FP)
15378 RET
15379
15380emit_remainder_ok_encodeSnappyBetterBlockAsm:
15381 MOVQ src_len+32(FP), CX
15382 MOVL 12(SP), BX
15383 CMPL BX, CX
15384 JEQ emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm
15385 MOVL CX, SI
15386 MOVL CX, 12(SP)
15387 LEAQ (DX)(BX*1), CX
15388 SUBL BX, SI
15389 LEAL -1(SI), DX
15390 CMPL DX, $0x3c
15391 JB one_byte_emit_remainder_encodeSnappyBetterBlockAsm
15392 CMPL DX, $0x00000100
15393 JB two_bytes_emit_remainder_encodeSnappyBetterBlockAsm
15394 CMPL DX, $0x00010000
15395 JB three_bytes_emit_remainder_encodeSnappyBetterBlockAsm
15396 CMPL DX, $0x01000000
15397 JB four_bytes_emit_remainder_encodeSnappyBetterBlockAsm
15398 MOVB $0xfc, (AX)
15399 MOVL DX, 1(AX)
15400 ADDQ $0x05, AX
15401 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm
15402
15403four_bytes_emit_remainder_encodeSnappyBetterBlockAsm:
15404 MOVL DX, BX
15405 SHRL $0x10, BX
15406 MOVB $0xf8, (AX)
15407 MOVW DX, 1(AX)
15408 MOVB BL, 3(AX)
15409 ADDQ $0x04, AX
15410 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm
15411
15412three_bytes_emit_remainder_encodeSnappyBetterBlockAsm:
15413 MOVB $0xf4, (AX)
15414 MOVW DX, 1(AX)
15415 ADDQ $0x03, AX
15416 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm
15417
15418two_bytes_emit_remainder_encodeSnappyBetterBlockAsm:
15419 MOVB $0xf0, (AX)
15420 MOVB DL, 1(AX)
15421 ADDQ $0x02, AX
15422 CMPL DX, $0x40
15423 JB memmove_emit_remainder_encodeSnappyBetterBlockAsm
15424 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm
15425
15426one_byte_emit_remainder_encodeSnappyBetterBlockAsm:
15427 SHLB $0x02, DL
15428 MOVB DL, (AX)
15429 ADDQ $0x01, AX
15430
15431memmove_emit_remainder_encodeSnappyBetterBlockAsm:
15432 LEAQ (AX)(SI*1), DX
15433 MOVL SI, BX
15434
15435 // genMemMoveShort
15436 CMPQ BX, $0x03
15437 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_1or2
15438 JE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_3
15439 CMPQ BX, $0x08
15440 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_4through7
15441 CMPQ BX, $0x10
15442 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_8through16
15443 CMPQ BX, $0x20
15444 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_17through32
15445 JMP emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_33through64
15446
15447emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_1or2:
15448 MOVB (CX), SI
15449 MOVB -1(CX)(BX*1), CL
15450 MOVB SI, (AX)
15451 MOVB CL, -1(AX)(BX*1)
15452 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm
15453
15454emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_3:
15455 MOVW (CX), SI
15456 MOVB 2(CX), CL
15457 MOVW SI, (AX)
15458 MOVB CL, 2(AX)
15459 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm
15460
15461emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_4through7:
15462 MOVL (CX), SI
15463 MOVL -4(CX)(BX*1), CX
15464 MOVL SI, (AX)
15465 MOVL CX, -4(AX)(BX*1)
15466 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm
15467
15468emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_8through16:
15469 MOVQ (CX), SI
15470 MOVQ -8(CX)(BX*1), CX
15471 MOVQ SI, (AX)
15472 MOVQ CX, -8(AX)(BX*1)
15473 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm
15474
15475emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_17through32:
15476 MOVOU (CX), X0
15477 MOVOU -16(CX)(BX*1), X1
15478 MOVOU X0, (AX)
15479 MOVOU X1, -16(AX)(BX*1)
15480 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm
15481
15482emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm_memmove_move_33through64:
15483 MOVOU (CX), X0
15484 MOVOU 16(CX), X1
15485 MOVOU -32(CX)(BX*1), X2
15486 MOVOU -16(CX)(BX*1), X3
15487 MOVOU X0, (AX)
15488 MOVOU X1, 16(AX)
15489 MOVOU X2, -32(AX)(BX*1)
15490 MOVOU X3, -16(AX)(BX*1)
15491
15492memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm:
15493 MOVQ DX, AX
15494 JMP emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm
15495
15496memmove_long_emit_remainder_encodeSnappyBetterBlockAsm:
15497 LEAQ (AX)(SI*1), DX
15498 MOVL SI, BX
15499
15500 // genMemMoveLong
15501 MOVOU (CX), X0
15502 MOVOU 16(CX), X1
15503 MOVOU -32(CX)(BX*1), X2
15504 MOVOU -16(CX)(BX*1), X3
15505 MOVQ BX, DI
15506 SHRQ $0x05, DI
15507 MOVQ AX, SI
15508 ANDL $0x0000001f, SI
15509 MOVQ $0x00000040, R8
15510 SUBQ SI, R8
15511 DECQ DI
15512 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsmlarge_forward_sse_loop_32
15513 LEAQ -32(CX)(R8*1), SI
15514 LEAQ -32(AX)(R8*1), R9
15515
15516emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsmlarge_big_loop_back:
15517 MOVOU (SI), X4
15518 MOVOU 16(SI), X5
15519 MOVOA X4, (R9)
15520 MOVOA X5, 16(R9)
15521 ADDQ $0x20, R9
15522 ADDQ $0x20, SI
15523 ADDQ $0x20, R8
15524 DECQ DI
15525 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsmlarge_big_loop_back
15526
15527emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsmlarge_forward_sse_loop_32:
15528 MOVOU -32(CX)(R8*1), X4
15529 MOVOU -16(CX)(R8*1), X5
15530 MOVOA X4, -32(AX)(R8*1)
15531 MOVOA X5, -16(AX)(R8*1)
15532 ADDQ $0x20, R8
15533 CMPQ BX, R8
15534 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsmlarge_forward_sse_loop_32
15535 MOVOU X0, (AX)
15536 MOVOU X1, 16(AX)
15537 MOVOU X2, -32(AX)(BX*1)
15538 MOVOU X3, -16(AX)(BX*1)
15539 MOVQ DX, AX
15540
15541emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm:
15542 MOVQ dst_base+0(FP), CX
15543 SUBQ CX, AX
15544 MOVQ AX, ret+48(FP)
15545 RET
15546
15547// func encodeSnappyBetterBlockAsm64K(dst []byte, src []byte) int
15548// Requires: BMI, SSE2
15549TEXT ·encodeSnappyBetterBlockAsm64K(SB), $327704-56
15550 MOVQ dst_base+0(FP), AX
15551 MOVQ $0x00000a00, CX
15552 LEAQ 24(SP), DX
15553 PXOR X0, X0
15554
15555zero_loop_encodeSnappyBetterBlockAsm64K:
15556 MOVOU X0, (DX)
15557 MOVOU X0, 16(DX)
15558 MOVOU X0, 32(DX)
15559 MOVOU X0, 48(DX)
15560 MOVOU X0, 64(DX)
15561 MOVOU X0, 80(DX)
15562 MOVOU X0, 96(DX)
15563 MOVOU X0, 112(DX)
15564 ADDQ $0x80, DX
15565 DECQ CX
15566 JNZ zero_loop_encodeSnappyBetterBlockAsm64K
15567 MOVL $0x00000000, 12(SP)
15568 MOVQ src_len+32(FP), CX
15569 LEAQ -9(CX), DX
15570 LEAQ -8(CX), BX
15571 MOVL BX, 8(SP)
15572 SHRQ $0x05, CX
15573 SUBL CX, DX
15574 LEAQ (AX)(DX*1), DX
15575 MOVQ DX, (SP)
15576 MOVL $0x00000001, CX
15577 MOVL $0x00000000, 16(SP)
15578 MOVQ src_base+24(FP), DX
15579
15580search_loop_encodeSnappyBetterBlockAsm64K:
15581 MOVL CX, BX
15582 SUBL 12(SP), BX
15583 SHRL $0x07, BX
15584 LEAL 1(CX)(BX*1), BX
15585 CMPL BX, 8(SP)
15586 JAE emit_remainder_encodeSnappyBetterBlockAsm64K
15587 MOVQ (DX)(CX*1), SI
15588 MOVL BX, 20(SP)
15589 MOVQ $0x00cf1bbcdcbfa563, R8
15590 MOVQ $0x9e3779b1, BX
15591 MOVQ SI, R9
15592 MOVQ SI, R10
15593 SHLQ $0x08, R9
15594 IMULQ R8, R9
15595 SHRQ $0x30, R9
15596 SHLQ $0x20, R10
15597 IMULQ BX, R10
15598 SHRQ $0x32, R10
15599 MOVL 24(SP)(R9*4), BX
15600 MOVL 262168(SP)(R10*4), DI
15601 MOVL CX, 24(SP)(R9*4)
15602 MOVL CX, 262168(SP)(R10*4)
15603 MOVQ (DX)(BX*1), R9
15604 MOVQ (DX)(DI*1), R10
15605 CMPQ R9, SI
15606 JEQ candidate_match_encodeSnappyBetterBlockAsm64K
15607 CMPQ R10, SI
15608 JNE no_short_found_encodeSnappyBetterBlockAsm64K
15609 MOVL DI, BX
15610 JMP candidate_match_encodeSnappyBetterBlockAsm64K
15611
15612no_short_found_encodeSnappyBetterBlockAsm64K:
15613 CMPL R9, SI
15614 JEQ candidate_match_encodeSnappyBetterBlockAsm64K
15615 CMPL R10, SI
15616 JEQ candidateS_match_encodeSnappyBetterBlockAsm64K
15617 MOVL 20(SP), CX
15618 JMP search_loop_encodeSnappyBetterBlockAsm64K
15619
15620candidateS_match_encodeSnappyBetterBlockAsm64K:
15621 SHRQ $0x08, SI
15622 MOVQ SI, R9
15623 SHLQ $0x08, R9
15624 IMULQ R8, R9
15625 SHRQ $0x30, R9
15626 MOVL 24(SP)(R9*4), BX
15627 INCL CX
15628 MOVL CX, 24(SP)(R9*4)
15629 CMPL (DX)(BX*1), SI
15630 JEQ candidate_match_encodeSnappyBetterBlockAsm64K
15631 DECL CX
15632 MOVL DI, BX
15633
15634candidate_match_encodeSnappyBetterBlockAsm64K:
15635 MOVL 12(SP), SI
15636 TESTL BX, BX
15637 JZ match_extend_back_end_encodeSnappyBetterBlockAsm64K
15638
15639match_extend_back_loop_encodeSnappyBetterBlockAsm64K:
15640 CMPL CX, SI
15641 JBE match_extend_back_end_encodeSnappyBetterBlockAsm64K
15642 MOVB -1(DX)(BX*1), DI
15643 MOVB -1(DX)(CX*1), R8
15644 CMPB DI, R8
15645 JNE match_extend_back_end_encodeSnappyBetterBlockAsm64K
15646 LEAL -1(CX), CX
15647 DECL BX
15648 JZ match_extend_back_end_encodeSnappyBetterBlockAsm64K
15649 JMP match_extend_back_loop_encodeSnappyBetterBlockAsm64K
15650
15651match_extend_back_end_encodeSnappyBetterBlockAsm64K:
15652 MOVL CX, SI
15653 SUBL 12(SP), SI
15654 LEAQ 3(AX)(SI*1), SI
15655 CMPQ SI, (SP)
15656 JB match_dst_size_check_encodeSnappyBetterBlockAsm64K
15657 MOVQ $0x00000000, ret+48(FP)
15658 RET
15659
15660match_dst_size_check_encodeSnappyBetterBlockAsm64K:
15661 MOVL CX, SI
15662 ADDL $0x04, CX
15663 ADDL $0x04, BX
15664 MOVQ src_len+32(FP), DI
15665 SUBL CX, DI
15666 LEAQ (DX)(CX*1), R8
15667 LEAQ (DX)(BX*1), R9
15668
15669 // matchLen
15670 XORL R11, R11
15671
15672matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm64K:
15673 CMPL DI, $0x10
15674 JB matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm64K
15675 MOVQ (R8)(R11*1), R10
15676 MOVQ 8(R8)(R11*1), R12
15677 XORQ (R9)(R11*1), R10
15678 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm64K
15679 XORQ 8(R9)(R11*1), R12
15680 JNZ matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm64K
15681 LEAL -16(DI), DI
15682 LEAL 16(R11), R11
15683 JMP matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm64K
15684
15685matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm64K:
15686#ifdef GOAMD64_v3
15687 TZCNTQ R12, R12
15688
15689#else
15690 BSFQ R12, R12
15691
15692#endif
15693 SARQ $0x03, R12
15694 LEAL 8(R11)(R12*1), R11
15695 JMP match_nolit_end_encodeSnappyBetterBlockAsm64K
15696
15697matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm64K:
15698 CMPL DI, $0x08
15699 JB matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm64K
15700 MOVQ (R8)(R11*1), R10
15701 XORQ (R9)(R11*1), R10
15702 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm64K
15703 LEAL -8(DI), DI
15704 LEAL 8(R11), R11
15705 JMP matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm64K
15706
15707matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm64K:
15708#ifdef GOAMD64_v3
15709 TZCNTQ R10, R10
15710
15711#else
15712 BSFQ R10, R10
15713
15714#endif
15715 SARQ $0x03, R10
15716 LEAL (R11)(R10*1), R11
15717 JMP match_nolit_end_encodeSnappyBetterBlockAsm64K
15718
15719matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm64K:
15720 CMPL DI, $0x04
15721 JB matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm64K
15722 MOVL (R8)(R11*1), R10
15723 CMPL (R9)(R11*1), R10
15724 JNE matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm64K
15725 LEAL -4(DI), DI
15726 LEAL 4(R11), R11
15727
15728matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm64K:
15729 CMPL DI, $0x01
15730 JE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm64K
15731 JB match_nolit_end_encodeSnappyBetterBlockAsm64K
15732 MOVW (R8)(R11*1), R10
15733 CMPW (R9)(R11*1), R10
15734 JNE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm64K
15735 LEAL 2(R11), R11
15736 SUBL $0x02, DI
15737 JZ match_nolit_end_encodeSnappyBetterBlockAsm64K
15738
15739matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm64K:
15740 MOVB (R8)(R11*1), R10
15741 CMPB (R9)(R11*1), R10
15742 JNE match_nolit_end_encodeSnappyBetterBlockAsm64K
15743 LEAL 1(R11), R11
15744
15745match_nolit_end_encodeSnappyBetterBlockAsm64K:
15746 MOVL CX, DI
15747 SUBL BX, DI
15748
15749 // Check if repeat
15750 MOVL DI, 16(SP)
15751 MOVL 12(SP), BX
15752 CMPL BX, SI
15753 JEQ emit_literal_done_match_emit_encodeSnappyBetterBlockAsm64K
15754 MOVL SI, R8
15755 MOVL SI, 12(SP)
15756 LEAQ (DX)(BX*1), R9
15757 SUBL BX, R8
15758 LEAL -1(R8), BX
15759 CMPL BX, $0x3c
15760 JB one_byte_match_emit_encodeSnappyBetterBlockAsm64K
15761 CMPL BX, $0x00000100
15762 JB two_bytes_match_emit_encodeSnappyBetterBlockAsm64K
15763 JB three_bytes_match_emit_encodeSnappyBetterBlockAsm64K
15764
15765three_bytes_match_emit_encodeSnappyBetterBlockAsm64K:
15766 MOVB $0xf4, (AX)
15767 MOVW BX, 1(AX)
15768 ADDQ $0x03, AX
15769 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm64K
15770
15771two_bytes_match_emit_encodeSnappyBetterBlockAsm64K:
15772 MOVB $0xf0, (AX)
15773 MOVB BL, 1(AX)
15774 ADDQ $0x02, AX
15775 CMPL BX, $0x40
15776 JB memmove_match_emit_encodeSnappyBetterBlockAsm64K
15777 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm64K
15778
15779one_byte_match_emit_encodeSnappyBetterBlockAsm64K:
15780 SHLB $0x02, BL
15781 MOVB BL, (AX)
15782 ADDQ $0x01, AX
15783
15784memmove_match_emit_encodeSnappyBetterBlockAsm64K:
15785 LEAQ (AX)(R8*1), BX
15786
15787 // genMemMoveShort
15788 CMPQ R8, $0x08
15789 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_8
15790 CMPQ R8, $0x10
15791 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_8through16
15792 CMPQ R8, $0x20
15793 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_17through32
15794 JMP emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_33through64
15795
15796emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_8:
15797 MOVQ (R9), R10
15798 MOVQ R10, (AX)
15799 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm64K
15800
15801emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_8through16:
15802 MOVQ (R9), R10
15803 MOVQ -8(R9)(R8*1), R9
15804 MOVQ R10, (AX)
15805 MOVQ R9, -8(AX)(R8*1)
15806 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm64K
15807
15808emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_17through32:
15809 MOVOU (R9), X0
15810 MOVOU -16(R9)(R8*1), X1
15811 MOVOU X0, (AX)
15812 MOVOU X1, -16(AX)(R8*1)
15813 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm64K
15814
15815emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm64K_memmove_move_33through64:
15816 MOVOU (R9), X0
15817 MOVOU 16(R9), X1
15818 MOVOU -32(R9)(R8*1), X2
15819 MOVOU -16(R9)(R8*1), X3
15820 MOVOU X0, (AX)
15821 MOVOU X1, 16(AX)
15822 MOVOU X2, -32(AX)(R8*1)
15823 MOVOU X3, -16(AX)(R8*1)
15824
15825memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm64K:
15826 MOVQ BX, AX
15827 JMP emit_literal_done_match_emit_encodeSnappyBetterBlockAsm64K
15828
15829memmove_long_match_emit_encodeSnappyBetterBlockAsm64K:
15830 LEAQ (AX)(R8*1), BX
15831
15832 // genMemMoveLong
15833 MOVOU (R9), X0
15834 MOVOU 16(R9), X1
15835 MOVOU -32(R9)(R8*1), X2
15836 MOVOU -16(R9)(R8*1), X3
15837 MOVQ R8, R12
15838 SHRQ $0x05, R12
15839 MOVQ AX, R10
15840 ANDL $0x0000001f, R10
15841 MOVQ $0x00000040, R13
15842 SUBQ R10, R13
15843 DECQ R12
15844 JA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm64Klarge_forward_sse_loop_32
15845 LEAQ -32(R9)(R13*1), R10
15846 LEAQ -32(AX)(R13*1), R14
15847
15848emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm64Klarge_big_loop_back:
15849 MOVOU (R10), X4
15850 MOVOU 16(R10), X5
15851 MOVOA X4, (R14)
15852 MOVOA X5, 16(R14)
15853 ADDQ $0x20, R14
15854 ADDQ $0x20, R10
15855 ADDQ $0x20, R13
15856 DECQ R12
15857 JNA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm64Klarge_big_loop_back
15858
15859emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm64Klarge_forward_sse_loop_32:
15860 MOVOU -32(R9)(R13*1), X4
15861 MOVOU -16(R9)(R13*1), X5
15862 MOVOA X4, -32(AX)(R13*1)
15863 MOVOA X5, -16(AX)(R13*1)
15864 ADDQ $0x20, R13
15865 CMPQ R8, R13
15866 JAE emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm64Klarge_forward_sse_loop_32
15867 MOVOU X0, (AX)
15868 MOVOU X1, 16(AX)
15869 MOVOU X2, -32(AX)(R8*1)
15870 MOVOU X3, -16(AX)(R8*1)
15871 MOVQ BX, AX
15872
15873emit_literal_done_match_emit_encodeSnappyBetterBlockAsm64K:
15874 ADDL R11, CX
15875 ADDL $0x04, R11
15876 MOVL CX, 12(SP)
15877
15878 // emitCopy
15879two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm64K:
15880 CMPL R11, $0x40
15881 JBE two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm64K
15882 MOVB $0xee, (AX)
15883 MOVW DI, 1(AX)
15884 LEAL -60(R11), R11
15885 ADDQ $0x03, AX
15886 JMP two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm64K
15887
15888two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm64K:
15889 MOVL R11, BX
15890 SHLL $0x02, BX
15891 CMPL R11, $0x0c
15892 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm64K
15893 CMPL DI, $0x00000800
15894 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm64K
15895 LEAL -15(BX), BX
15896 MOVB DI, 1(AX)
15897 SHRL $0x08, DI
15898 SHLL $0x05, DI
15899 ORL DI, BX
15900 MOVB BL, (AX)
15901 ADDQ $0x02, AX
15902 JMP match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm64K
15903
15904emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm64K:
15905 LEAL -2(BX), BX
15906 MOVB BL, (AX)
15907 MOVW DI, 1(AX)
15908 ADDQ $0x03, AX
15909
15910match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm64K:
15911 CMPL CX, 8(SP)
15912 JAE emit_remainder_encodeSnappyBetterBlockAsm64K
15913 CMPQ AX, (SP)
15914 JB match_nolit_dst_ok_encodeSnappyBetterBlockAsm64K
15915 MOVQ $0x00000000, ret+48(FP)
15916 RET
15917
15918match_nolit_dst_ok_encodeSnappyBetterBlockAsm64K:
15919 MOVQ $0x00cf1bbcdcbfa563, BX
15920 MOVQ $0x9e3779b1, DI
15921 LEAQ 1(SI), SI
15922 LEAQ -2(CX), R8
15923 MOVQ (DX)(SI*1), R9
15924 MOVQ 1(DX)(SI*1), R10
15925 MOVQ (DX)(R8*1), R11
15926 MOVQ 1(DX)(R8*1), R12
15927 SHLQ $0x08, R9
15928 IMULQ BX, R9
15929 SHRQ $0x30, R9
15930 SHLQ $0x20, R10
15931 IMULQ DI, R10
15932 SHRQ $0x32, R10
15933 SHLQ $0x08, R11
15934 IMULQ BX, R11
15935 SHRQ $0x30, R11
15936 SHLQ $0x20, R12
15937 IMULQ DI, R12
15938 SHRQ $0x32, R12
15939 LEAQ 1(SI), DI
15940 LEAQ 1(R8), R13
15941 MOVL SI, 24(SP)(R9*4)
15942 MOVL R8, 24(SP)(R11*4)
15943 MOVL DI, 262168(SP)(R10*4)
15944 MOVL R13, 262168(SP)(R12*4)
15945 LEAQ 1(R8)(SI*1), DI
15946 SHRQ $0x01, DI
15947 ADDQ $0x01, SI
15948 SUBQ $0x01, R8
15949
15950index_loop_encodeSnappyBetterBlockAsm64K:
15951 CMPQ DI, R8
15952 JAE search_loop_encodeSnappyBetterBlockAsm64K
15953 MOVQ (DX)(SI*1), R9
15954 MOVQ (DX)(DI*1), R10
15955 SHLQ $0x08, R9
15956 IMULQ BX, R9
15957 SHRQ $0x30, R9
15958 SHLQ $0x08, R10
15959 IMULQ BX, R10
15960 SHRQ $0x30, R10
15961 MOVL SI, 24(SP)(R9*4)
15962 MOVL DI, 24(SP)(R10*4)
15963 ADDQ $0x02, SI
15964 ADDQ $0x02, DI
15965 JMP index_loop_encodeSnappyBetterBlockAsm64K
15966
15967emit_remainder_encodeSnappyBetterBlockAsm64K:
15968 MOVQ src_len+32(FP), CX
15969 SUBL 12(SP), CX
15970 LEAQ 3(AX)(CX*1), CX
15971 CMPQ CX, (SP)
15972 JB emit_remainder_ok_encodeSnappyBetterBlockAsm64K
15973 MOVQ $0x00000000, ret+48(FP)
15974 RET
15975
15976emit_remainder_ok_encodeSnappyBetterBlockAsm64K:
15977 MOVQ src_len+32(FP), CX
15978 MOVL 12(SP), BX
15979 CMPL BX, CX
15980 JEQ emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm64K
15981 MOVL CX, SI
15982 MOVL CX, 12(SP)
15983 LEAQ (DX)(BX*1), CX
15984 SUBL BX, SI
15985 LEAL -1(SI), DX
15986 CMPL DX, $0x3c
15987 JB one_byte_emit_remainder_encodeSnappyBetterBlockAsm64K
15988 CMPL DX, $0x00000100
15989 JB two_bytes_emit_remainder_encodeSnappyBetterBlockAsm64K
15990 JB three_bytes_emit_remainder_encodeSnappyBetterBlockAsm64K
15991
15992three_bytes_emit_remainder_encodeSnappyBetterBlockAsm64K:
15993 MOVB $0xf4, (AX)
15994 MOVW DX, 1(AX)
15995 ADDQ $0x03, AX
15996 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64K
15997
15998two_bytes_emit_remainder_encodeSnappyBetterBlockAsm64K:
15999 MOVB $0xf0, (AX)
16000 MOVB DL, 1(AX)
16001 ADDQ $0x02, AX
16002 CMPL DX, $0x40
16003 JB memmove_emit_remainder_encodeSnappyBetterBlockAsm64K
16004 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64K
16005
16006one_byte_emit_remainder_encodeSnappyBetterBlockAsm64K:
16007 SHLB $0x02, DL
16008 MOVB DL, (AX)
16009 ADDQ $0x01, AX
16010
16011memmove_emit_remainder_encodeSnappyBetterBlockAsm64K:
16012 LEAQ (AX)(SI*1), DX
16013 MOVL SI, BX
16014
16015 // genMemMoveShort
16016 CMPQ BX, $0x03
16017 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_1or2
16018 JE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_3
16019 CMPQ BX, $0x08
16020 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_4through7
16021 CMPQ BX, $0x10
16022 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_8through16
16023 CMPQ BX, $0x20
16024 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_17through32
16025 JMP emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_33through64
16026
16027emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_1or2:
16028 MOVB (CX), SI
16029 MOVB -1(CX)(BX*1), CL
16030 MOVB SI, (AX)
16031 MOVB CL, -1(AX)(BX*1)
16032 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm64K
16033
16034emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_3:
16035 MOVW (CX), SI
16036 MOVB 2(CX), CL
16037 MOVW SI, (AX)
16038 MOVB CL, 2(AX)
16039 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm64K
16040
16041emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_4through7:
16042 MOVL (CX), SI
16043 MOVL -4(CX)(BX*1), CX
16044 MOVL SI, (AX)
16045 MOVL CX, -4(AX)(BX*1)
16046 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm64K
16047
16048emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_8through16:
16049 MOVQ (CX), SI
16050 MOVQ -8(CX)(BX*1), CX
16051 MOVQ SI, (AX)
16052 MOVQ CX, -8(AX)(BX*1)
16053 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm64K
16054
16055emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_17through32:
16056 MOVOU (CX), X0
16057 MOVOU -16(CX)(BX*1), X1
16058 MOVOU X0, (AX)
16059 MOVOU X1, -16(AX)(BX*1)
16060 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm64K
16061
16062emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm64K_memmove_move_33through64:
16063 MOVOU (CX), X0
16064 MOVOU 16(CX), X1
16065 MOVOU -32(CX)(BX*1), X2
16066 MOVOU -16(CX)(BX*1), X3
16067 MOVOU X0, (AX)
16068 MOVOU X1, 16(AX)
16069 MOVOU X2, -32(AX)(BX*1)
16070 MOVOU X3, -16(AX)(BX*1)
16071
16072memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm64K:
16073 MOVQ DX, AX
16074 JMP emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm64K
16075
16076memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64K:
16077 LEAQ (AX)(SI*1), DX
16078 MOVL SI, BX
16079
16080 // genMemMoveLong
16081 MOVOU (CX), X0
16082 MOVOU 16(CX), X1
16083 MOVOU -32(CX)(BX*1), X2
16084 MOVOU -16(CX)(BX*1), X3
16085 MOVQ BX, DI
16086 SHRQ $0x05, DI
16087 MOVQ AX, SI
16088 ANDL $0x0000001f, SI
16089 MOVQ $0x00000040, R8
16090 SUBQ SI, R8
16091 DECQ DI
16092 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64Klarge_forward_sse_loop_32
16093 LEAQ -32(CX)(R8*1), SI
16094 LEAQ -32(AX)(R8*1), R9
16095
16096emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64Klarge_big_loop_back:
16097 MOVOU (SI), X4
16098 MOVOU 16(SI), X5
16099 MOVOA X4, (R9)
16100 MOVOA X5, 16(R9)
16101 ADDQ $0x20, R9
16102 ADDQ $0x20, SI
16103 ADDQ $0x20, R8
16104 DECQ DI
16105 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64Klarge_big_loop_back
16106
16107emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64Klarge_forward_sse_loop_32:
16108 MOVOU -32(CX)(R8*1), X4
16109 MOVOU -16(CX)(R8*1), X5
16110 MOVOA X4, -32(AX)(R8*1)
16111 MOVOA X5, -16(AX)(R8*1)
16112 ADDQ $0x20, R8
16113 CMPQ BX, R8
16114 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm64Klarge_forward_sse_loop_32
16115 MOVOU X0, (AX)
16116 MOVOU X1, 16(AX)
16117 MOVOU X2, -32(AX)(BX*1)
16118 MOVOU X3, -16(AX)(BX*1)
16119 MOVQ DX, AX
16120
16121emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm64K:
16122 MOVQ dst_base+0(FP), CX
16123 SUBQ CX, AX
16124 MOVQ AX, ret+48(FP)
16125 RET
16126
16127// func encodeSnappyBetterBlockAsm12B(dst []byte, src []byte) int
16128// Requires: BMI, SSE2
16129TEXT ·encodeSnappyBetterBlockAsm12B(SB), $81944-56
16130 MOVQ dst_base+0(FP), AX
16131 MOVQ $0x00000280, CX
16132 LEAQ 24(SP), DX
16133 PXOR X0, X0
16134
16135zero_loop_encodeSnappyBetterBlockAsm12B:
16136 MOVOU X0, (DX)
16137 MOVOU X0, 16(DX)
16138 MOVOU X0, 32(DX)
16139 MOVOU X0, 48(DX)
16140 MOVOU X0, 64(DX)
16141 MOVOU X0, 80(DX)
16142 MOVOU X0, 96(DX)
16143 MOVOU X0, 112(DX)
16144 ADDQ $0x80, DX
16145 DECQ CX
16146 JNZ zero_loop_encodeSnappyBetterBlockAsm12B
16147 MOVL $0x00000000, 12(SP)
16148 MOVQ src_len+32(FP), CX
16149 LEAQ -9(CX), DX
16150 LEAQ -8(CX), BX
16151 MOVL BX, 8(SP)
16152 SHRQ $0x05, CX
16153 SUBL CX, DX
16154 LEAQ (AX)(DX*1), DX
16155 MOVQ DX, (SP)
16156 MOVL $0x00000001, CX
16157 MOVL $0x00000000, 16(SP)
16158 MOVQ src_base+24(FP), DX
16159
16160search_loop_encodeSnappyBetterBlockAsm12B:
16161 MOVL CX, BX
16162 SUBL 12(SP), BX
16163 SHRL $0x06, BX
16164 LEAL 1(CX)(BX*1), BX
16165 CMPL BX, 8(SP)
16166 JAE emit_remainder_encodeSnappyBetterBlockAsm12B
16167 MOVQ (DX)(CX*1), SI
16168 MOVL BX, 20(SP)
16169 MOVQ $0x0000cf1bbcdcbf9b, R8
16170 MOVQ $0x9e3779b1, BX
16171 MOVQ SI, R9
16172 MOVQ SI, R10
16173 SHLQ $0x10, R9
16174 IMULQ R8, R9
16175 SHRQ $0x32, R9
16176 SHLQ $0x20, R10
16177 IMULQ BX, R10
16178 SHRQ $0x34, R10
16179 MOVL 24(SP)(R9*4), BX
16180 MOVL 65560(SP)(R10*4), DI
16181 MOVL CX, 24(SP)(R9*4)
16182 MOVL CX, 65560(SP)(R10*4)
16183 MOVQ (DX)(BX*1), R9
16184 MOVQ (DX)(DI*1), R10
16185 CMPQ R9, SI
16186 JEQ candidate_match_encodeSnappyBetterBlockAsm12B
16187 CMPQ R10, SI
16188 JNE no_short_found_encodeSnappyBetterBlockAsm12B
16189 MOVL DI, BX
16190 JMP candidate_match_encodeSnappyBetterBlockAsm12B
16191
16192no_short_found_encodeSnappyBetterBlockAsm12B:
16193 CMPL R9, SI
16194 JEQ candidate_match_encodeSnappyBetterBlockAsm12B
16195 CMPL R10, SI
16196 JEQ candidateS_match_encodeSnappyBetterBlockAsm12B
16197 MOVL 20(SP), CX
16198 JMP search_loop_encodeSnappyBetterBlockAsm12B
16199
16200candidateS_match_encodeSnappyBetterBlockAsm12B:
16201 SHRQ $0x08, SI
16202 MOVQ SI, R9
16203 SHLQ $0x10, R9
16204 IMULQ R8, R9
16205 SHRQ $0x32, R9
16206 MOVL 24(SP)(R9*4), BX
16207 INCL CX
16208 MOVL CX, 24(SP)(R9*4)
16209 CMPL (DX)(BX*1), SI
16210 JEQ candidate_match_encodeSnappyBetterBlockAsm12B
16211 DECL CX
16212 MOVL DI, BX
16213
16214candidate_match_encodeSnappyBetterBlockAsm12B:
16215 MOVL 12(SP), SI
16216 TESTL BX, BX
16217 JZ match_extend_back_end_encodeSnappyBetterBlockAsm12B
16218
16219match_extend_back_loop_encodeSnappyBetterBlockAsm12B:
16220 CMPL CX, SI
16221 JBE match_extend_back_end_encodeSnappyBetterBlockAsm12B
16222 MOVB -1(DX)(BX*1), DI
16223 MOVB -1(DX)(CX*1), R8
16224 CMPB DI, R8
16225 JNE match_extend_back_end_encodeSnappyBetterBlockAsm12B
16226 LEAL -1(CX), CX
16227 DECL BX
16228 JZ match_extend_back_end_encodeSnappyBetterBlockAsm12B
16229 JMP match_extend_back_loop_encodeSnappyBetterBlockAsm12B
16230
16231match_extend_back_end_encodeSnappyBetterBlockAsm12B:
16232 MOVL CX, SI
16233 SUBL 12(SP), SI
16234 LEAQ 3(AX)(SI*1), SI
16235 CMPQ SI, (SP)
16236 JB match_dst_size_check_encodeSnappyBetterBlockAsm12B
16237 MOVQ $0x00000000, ret+48(FP)
16238 RET
16239
16240match_dst_size_check_encodeSnappyBetterBlockAsm12B:
16241 MOVL CX, SI
16242 ADDL $0x04, CX
16243 ADDL $0x04, BX
16244 MOVQ src_len+32(FP), DI
16245 SUBL CX, DI
16246 LEAQ (DX)(CX*1), R8
16247 LEAQ (DX)(BX*1), R9
16248
16249 // matchLen
16250 XORL R11, R11
16251
16252matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm12B:
16253 CMPL DI, $0x10
16254 JB matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm12B
16255 MOVQ (R8)(R11*1), R10
16256 MOVQ 8(R8)(R11*1), R12
16257 XORQ (R9)(R11*1), R10
16258 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm12B
16259 XORQ 8(R9)(R11*1), R12
16260 JNZ matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm12B
16261 LEAL -16(DI), DI
16262 LEAL 16(R11), R11
16263 JMP matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm12B
16264
16265matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm12B:
16266#ifdef GOAMD64_v3
16267 TZCNTQ R12, R12
16268
16269#else
16270 BSFQ R12, R12
16271
16272#endif
16273 SARQ $0x03, R12
16274 LEAL 8(R11)(R12*1), R11
16275 JMP match_nolit_end_encodeSnappyBetterBlockAsm12B
16276
16277matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm12B:
16278 CMPL DI, $0x08
16279 JB matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm12B
16280 MOVQ (R8)(R11*1), R10
16281 XORQ (R9)(R11*1), R10
16282 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm12B
16283 LEAL -8(DI), DI
16284 LEAL 8(R11), R11
16285 JMP matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm12B
16286
16287matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm12B:
16288#ifdef GOAMD64_v3
16289 TZCNTQ R10, R10
16290
16291#else
16292 BSFQ R10, R10
16293
16294#endif
16295 SARQ $0x03, R10
16296 LEAL (R11)(R10*1), R11
16297 JMP match_nolit_end_encodeSnappyBetterBlockAsm12B
16298
16299matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm12B:
16300 CMPL DI, $0x04
16301 JB matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm12B
16302 MOVL (R8)(R11*1), R10
16303 CMPL (R9)(R11*1), R10
16304 JNE matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm12B
16305 LEAL -4(DI), DI
16306 LEAL 4(R11), R11
16307
16308matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm12B:
16309 CMPL DI, $0x01
16310 JE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm12B
16311 JB match_nolit_end_encodeSnappyBetterBlockAsm12B
16312 MOVW (R8)(R11*1), R10
16313 CMPW (R9)(R11*1), R10
16314 JNE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm12B
16315 LEAL 2(R11), R11
16316 SUBL $0x02, DI
16317 JZ match_nolit_end_encodeSnappyBetterBlockAsm12B
16318
16319matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm12B:
16320 MOVB (R8)(R11*1), R10
16321 CMPB (R9)(R11*1), R10
16322 JNE match_nolit_end_encodeSnappyBetterBlockAsm12B
16323 LEAL 1(R11), R11
16324
16325match_nolit_end_encodeSnappyBetterBlockAsm12B:
16326 MOVL CX, DI
16327 SUBL BX, DI
16328
16329 // Check if repeat
16330 MOVL DI, 16(SP)
16331 MOVL 12(SP), BX
16332 CMPL BX, SI
16333 JEQ emit_literal_done_match_emit_encodeSnappyBetterBlockAsm12B
16334 MOVL SI, R8
16335 MOVL SI, 12(SP)
16336 LEAQ (DX)(BX*1), R9
16337 SUBL BX, R8
16338 LEAL -1(R8), BX
16339 CMPL BX, $0x3c
16340 JB one_byte_match_emit_encodeSnappyBetterBlockAsm12B
16341 CMPL BX, $0x00000100
16342 JB two_bytes_match_emit_encodeSnappyBetterBlockAsm12B
16343 JB three_bytes_match_emit_encodeSnappyBetterBlockAsm12B
16344
16345three_bytes_match_emit_encodeSnappyBetterBlockAsm12B:
16346 MOVB $0xf4, (AX)
16347 MOVW BX, 1(AX)
16348 ADDQ $0x03, AX
16349 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm12B
16350
16351two_bytes_match_emit_encodeSnappyBetterBlockAsm12B:
16352 MOVB $0xf0, (AX)
16353 MOVB BL, 1(AX)
16354 ADDQ $0x02, AX
16355 CMPL BX, $0x40
16356 JB memmove_match_emit_encodeSnappyBetterBlockAsm12B
16357 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm12B
16358
16359one_byte_match_emit_encodeSnappyBetterBlockAsm12B:
16360 SHLB $0x02, BL
16361 MOVB BL, (AX)
16362 ADDQ $0x01, AX
16363
16364memmove_match_emit_encodeSnappyBetterBlockAsm12B:
16365 LEAQ (AX)(R8*1), BX
16366
16367 // genMemMoveShort
16368 CMPQ R8, $0x08
16369 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_8
16370 CMPQ R8, $0x10
16371 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_8through16
16372 CMPQ R8, $0x20
16373 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_17through32
16374 JMP emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_33through64
16375
16376emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_8:
16377 MOVQ (R9), R10
16378 MOVQ R10, (AX)
16379 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm12B
16380
16381emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_8through16:
16382 MOVQ (R9), R10
16383 MOVQ -8(R9)(R8*1), R9
16384 MOVQ R10, (AX)
16385 MOVQ R9, -8(AX)(R8*1)
16386 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm12B
16387
16388emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_17through32:
16389 MOVOU (R9), X0
16390 MOVOU -16(R9)(R8*1), X1
16391 MOVOU X0, (AX)
16392 MOVOU X1, -16(AX)(R8*1)
16393 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm12B
16394
16395emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm12B_memmove_move_33through64:
16396 MOVOU (R9), X0
16397 MOVOU 16(R9), X1
16398 MOVOU -32(R9)(R8*1), X2
16399 MOVOU -16(R9)(R8*1), X3
16400 MOVOU X0, (AX)
16401 MOVOU X1, 16(AX)
16402 MOVOU X2, -32(AX)(R8*1)
16403 MOVOU X3, -16(AX)(R8*1)
16404
16405memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm12B:
16406 MOVQ BX, AX
16407 JMP emit_literal_done_match_emit_encodeSnappyBetterBlockAsm12B
16408
16409memmove_long_match_emit_encodeSnappyBetterBlockAsm12B:
16410 LEAQ (AX)(R8*1), BX
16411
16412 // genMemMoveLong
16413 MOVOU (R9), X0
16414 MOVOU 16(R9), X1
16415 MOVOU -32(R9)(R8*1), X2
16416 MOVOU -16(R9)(R8*1), X3
16417 MOVQ R8, R12
16418 SHRQ $0x05, R12
16419 MOVQ AX, R10
16420 ANDL $0x0000001f, R10
16421 MOVQ $0x00000040, R13
16422 SUBQ R10, R13
16423 DECQ R12
16424 JA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm12Blarge_forward_sse_loop_32
16425 LEAQ -32(R9)(R13*1), R10
16426 LEAQ -32(AX)(R13*1), R14
16427
16428emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm12Blarge_big_loop_back:
16429 MOVOU (R10), X4
16430 MOVOU 16(R10), X5
16431 MOVOA X4, (R14)
16432 MOVOA X5, 16(R14)
16433 ADDQ $0x20, R14
16434 ADDQ $0x20, R10
16435 ADDQ $0x20, R13
16436 DECQ R12
16437 JNA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm12Blarge_big_loop_back
16438
16439emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm12Blarge_forward_sse_loop_32:
16440 MOVOU -32(R9)(R13*1), X4
16441 MOVOU -16(R9)(R13*1), X5
16442 MOVOA X4, -32(AX)(R13*1)
16443 MOVOA X5, -16(AX)(R13*1)
16444 ADDQ $0x20, R13
16445 CMPQ R8, R13
16446 JAE emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm12Blarge_forward_sse_loop_32
16447 MOVOU X0, (AX)
16448 MOVOU X1, 16(AX)
16449 MOVOU X2, -32(AX)(R8*1)
16450 MOVOU X3, -16(AX)(R8*1)
16451 MOVQ BX, AX
16452
16453emit_literal_done_match_emit_encodeSnappyBetterBlockAsm12B:
16454 ADDL R11, CX
16455 ADDL $0x04, R11
16456 MOVL CX, 12(SP)
16457
16458 // emitCopy
16459two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm12B:
16460 CMPL R11, $0x40
16461 JBE two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm12B
16462 MOVB $0xee, (AX)
16463 MOVW DI, 1(AX)
16464 LEAL -60(R11), R11
16465 ADDQ $0x03, AX
16466 JMP two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm12B
16467
16468two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm12B:
16469 MOVL R11, BX
16470 SHLL $0x02, BX
16471 CMPL R11, $0x0c
16472 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm12B
16473 CMPL DI, $0x00000800
16474 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm12B
16475 LEAL -15(BX), BX
16476 MOVB DI, 1(AX)
16477 SHRL $0x08, DI
16478 SHLL $0x05, DI
16479 ORL DI, BX
16480 MOVB BL, (AX)
16481 ADDQ $0x02, AX
16482 JMP match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm12B
16483
16484emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm12B:
16485 LEAL -2(BX), BX
16486 MOVB BL, (AX)
16487 MOVW DI, 1(AX)
16488 ADDQ $0x03, AX
16489
16490match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm12B:
16491 CMPL CX, 8(SP)
16492 JAE emit_remainder_encodeSnappyBetterBlockAsm12B
16493 CMPQ AX, (SP)
16494 JB match_nolit_dst_ok_encodeSnappyBetterBlockAsm12B
16495 MOVQ $0x00000000, ret+48(FP)
16496 RET
16497
16498match_nolit_dst_ok_encodeSnappyBetterBlockAsm12B:
16499 MOVQ $0x0000cf1bbcdcbf9b, BX
16500 MOVQ $0x9e3779b1, DI
16501 LEAQ 1(SI), SI
16502 LEAQ -2(CX), R8
16503 MOVQ (DX)(SI*1), R9
16504 MOVQ 1(DX)(SI*1), R10
16505 MOVQ (DX)(R8*1), R11
16506 MOVQ 1(DX)(R8*1), R12
16507 SHLQ $0x10, R9
16508 IMULQ BX, R9
16509 SHRQ $0x32, R9
16510 SHLQ $0x20, R10
16511 IMULQ DI, R10
16512 SHRQ $0x34, R10
16513 SHLQ $0x10, R11
16514 IMULQ BX, R11
16515 SHRQ $0x32, R11
16516 SHLQ $0x20, R12
16517 IMULQ DI, R12
16518 SHRQ $0x34, R12
16519 LEAQ 1(SI), DI
16520 LEAQ 1(R8), R13
16521 MOVL SI, 24(SP)(R9*4)
16522 MOVL R8, 24(SP)(R11*4)
16523 MOVL DI, 65560(SP)(R10*4)
16524 MOVL R13, 65560(SP)(R12*4)
16525 LEAQ 1(R8)(SI*1), DI
16526 SHRQ $0x01, DI
16527 ADDQ $0x01, SI
16528 SUBQ $0x01, R8
16529
16530index_loop_encodeSnappyBetterBlockAsm12B:
16531 CMPQ DI, R8
16532 JAE search_loop_encodeSnappyBetterBlockAsm12B
16533 MOVQ (DX)(SI*1), R9
16534 MOVQ (DX)(DI*1), R10
16535 SHLQ $0x10, R9
16536 IMULQ BX, R9
16537 SHRQ $0x32, R9
16538 SHLQ $0x10, R10
16539 IMULQ BX, R10
16540 SHRQ $0x32, R10
16541 MOVL SI, 24(SP)(R9*4)
16542 MOVL DI, 24(SP)(R10*4)
16543 ADDQ $0x02, SI
16544 ADDQ $0x02, DI
16545 JMP index_loop_encodeSnappyBetterBlockAsm12B
16546
16547emit_remainder_encodeSnappyBetterBlockAsm12B:
16548 MOVQ src_len+32(FP), CX
16549 SUBL 12(SP), CX
16550 LEAQ 3(AX)(CX*1), CX
16551 CMPQ CX, (SP)
16552 JB emit_remainder_ok_encodeSnappyBetterBlockAsm12B
16553 MOVQ $0x00000000, ret+48(FP)
16554 RET
16555
16556emit_remainder_ok_encodeSnappyBetterBlockAsm12B:
16557 MOVQ src_len+32(FP), CX
16558 MOVL 12(SP), BX
16559 CMPL BX, CX
16560 JEQ emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm12B
16561 MOVL CX, SI
16562 MOVL CX, 12(SP)
16563 LEAQ (DX)(BX*1), CX
16564 SUBL BX, SI
16565 LEAL -1(SI), DX
16566 CMPL DX, $0x3c
16567 JB one_byte_emit_remainder_encodeSnappyBetterBlockAsm12B
16568 CMPL DX, $0x00000100
16569 JB two_bytes_emit_remainder_encodeSnappyBetterBlockAsm12B
16570 JB three_bytes_emit_remainder_encodeSnappyBetterBlockAsm12B
16571
16572three_bytes_emit_remainder_encodeSnappyBetterBlockAsm12B:
16573 MOVB $0xf4, (AX)
16574 MOVW DX, 1(AX)
16575 ADDQ $0x03, AX
16576 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12B
16577
16578two_bytes_emit_remainder_encodeSnappyBetterBlockAsm12B:
16579 MOVB $0xf0, (AX)
16580 MOVB DL, 1(AX)
16581 ADDQ $0x02, AX
16582 CMPL DX, $0x40
16583 JB memmove_emit_remainder_encodeSnappyBetterBlockAsm12B
16584 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12B
16585
16586one_byte_emit_remainder_encodeSnappyBetterBlockAsm12B:
16587 SHLB $0x02, DL
16588 MOVB DL, (AX)
16589 ADDQ $0x01, AX
16590
16591memmove_emit_remainder_encodeSnappyBetterBlockAsm12B:
16592 LEAQ (AX)(SI*1), DX
16593 MOVL SI, BX
16594
16595 // genMemMoveShort
16596 CMPQ BX, $0x03
16597 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_1or2
16598 JE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_3
16599 CMPQ BX, $0x08
16600 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_4through7
16601 CMPQ BX, $0x10
16602 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_8through16
16603 CMPQ BX, $0x20
16604 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_17through32
16605 JMP emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_33through64
16606
16607emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_1or2:
16608 MOVB (CX), SI
16609 MOVB -1(CX)(BX*1), CL
16610 MOVB SI, (AX)
16611 MOVB CL, -1(AX)(BX*1)
16612 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm12B
16613
16614emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_3:
16615 MOVW (CX), SI
16616 MOVB 2(CX), CL
16617 MOVW SI, (AX)
16618 MOVB CL, 2(AX)
16619 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm12B
16620
16621emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_4through7:
16622 MOVL (CX), SI
16623 MOVL -4(CX)(BX*1), CX
16624 MOVL SI, (AX)
16625 MOVL CX, -4(AX)(BX*1)
16626 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm12B
16627
16628emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_8through16:
16629 MOVQ (CX), SI
16630 MOVQ -8(CX)(BX*1), CX
16631 MOVQ SI, (AX)
16632 MOVQ CX, -8(AX)(BX*1)
16633 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm12B
16634
16635emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_17through32:
16636 MOVOU (CX), X0
16637 MOVOU -16(CX)(BX*1), X1
16638 MOVOU X0, (AX)
16639 MOVOU X1, -16(AX)(BX*1)
16640 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm12B
16641
16642emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm12B_memmove_move_33through64:
16643 MOVOU (CX), X0
16644 MOVOU 16(CX), X1
16645 MOVOU -32(CX)(BX*1), X2
16646 MOVOU -16(CX)(BX*1), X3
16647 MOVOU X0, (AX)
16648 MOVOU X1, 16(AX)
16649 MOVOU X2, -32(AX)(BX*1)
16650 MOVOU X3, -16(AX)(BX*1)
16651
16652memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm12B:
16653 MOVQ DX, AX
16654 JMP emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm12B
16655
16656memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12B:
16657 LEAQ (AX)(SI*1), DX
16658 MOVL SI, BX
16659
16660 // genMemMoveLong
16661 MOVOU (CX), X0
16662 MOVOU 16(CX), X1
16663 MOVOU -32(CX)(BX*1), X2
16664 MOVOU -16(CX)(BX*1), X3
16665 MOVQ BX, DI
16666 SHRQ $0x05, DI
16667 MOVQ AX, SI
16668 ANDL $0x0000001f, SI
16669 MOVQ $0x00000040, R8
16670 SUBQ SI, R8
16671 DECQ DI
16672 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12Blarge_forward_sse_loop_32
16673 LEAQ -32(CX)(R8*1), SI
16674 LEAQ -32(AX)(R8*1), R9
16675
16676emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12Blarge_big_loop_back:
16677 MOVOU (SI), X4
16678 MOVOU 16(SI), X5
16679 MOVOA X4, (R9)
16680 MOVOA X5, 16(R9)
16681 ADDQ $0x20, R9
16682 ADDQ $0x20, SI
16683 ADDQ $0x20, R8
16684 DECQ DI
16685 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12Blarge_big_loop_back
16686
16687emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12Blarge_forward_sse_loop_32:
16688 MOVOU -32(CX)(R8*1), X4
16689 MOVOU -16(CX)(R8*1), X5
16690 MOVOA X4, -32(AX)(R8*1)
16691 MOVOA X5, -16(AX)(R8*1)
16692 ADDQ $0x20, R8
16693 CMPQ BX, R8
16694 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm12Blarge_forward_sse_loop_32
16695 MOVOU X0, (AX)
16696 MOVOU X1, 16(AX)
16697 MOVOU X2, -32(AX)(BX*1)
16698 MOVOU X3, -16(AX)(BX*1)
16699 MOVQ DX, AX
16700
16701emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm12B:
16702 MOVQ dst_base+0(FP), CX
16703 SUBQ CX, AX
16704 MOVQ AX, ret+48(FP)
16705 RET
16706
16707// func encodeSnappyBetterBlockAsm10B(dst []byte, src []byte) int
16708// Requires: BMI, SSE2
16709TEXT ·encodeSnappyBetterBlockAsm10B(SB), $20504-56
16710 MOVQ dst_base+0(FP), AX
16711 MOVQ $0x000000a0, CX
16712 LEAQ 24(SP), DX
16713 PXOR X0, X0
16714
16715zero_loop_encodeSnappyBetterBlockAsm10B:
16716 MOVOU X0, (DX)
16717 MOVOU X0, 16(DX)
16718 MOVOU X0, 32(DX)
16719 MOVOU X0, 48(DX)
16720 MOVOU X0, 64(DX)
16721 MOVOU X0, 80(DX)
16722 MOVOU X0, 96(DX)
16723 MOVOU X0, 112(DX)
16724 ADDQ $0x80, DX
16725 DECQ CX
16726 JNZ zero_loop_encodeSnappyBetterBlockAsm10B
16727 MOVL $0x00000000, 12(SP)
16728 MOVQ src_len+32(FP), CX
16729 LEAQ -9(CX), DX
16730 LEAQ -8(CX), BX
16731 MOVL BX, 8(SP)
16732 SHRQ $0x05, CX
16733 SUBL CX, DX
16734 LEAQ (AX)(DX*1), DX
16735 MOVQ DX, (SP)
16736 MOVL $0x00000001, CX
16737 MOVL $0x00000000, 16(SP)
16738 MOVQ src_base+24(FP), DX
16739
16740search_loop_encodeSnappyBetterBlockAsm10B:
16741 MOVL CX, BX
16742 SUBL 12(SP), BX
16743 SHRL $0x05, BX
16744 LEAL 1(CX)(BX*1), BX
16745 CMPL BX, 8(SP)
16746 JAE emit_remainder_encodeSnappyBetterBlockAsm10B
16747 MOVQ (DX)(CX*1), SI
16748 MOVL BX, 20(SP)
16749 MOVQ $0x0000cf1bbcdcbf9b, R8
16750 MOVQ $0x9e3779b1, BX
16751 MOVQ SI, R9
16752 MOVQ SI, R10
16753 SHLQ $0x10, R9
16754 IMULQ R8, R9
16755 SHRQ $0x34, R9
16756 SHLQ $0x20, R10
16757 IMULQ BX, R10
16758 SHRQ $0x36, R10
16759 MOVL 24(SP)(R9*4), BX
16760 MOVL 16408(SP)(R10*4), DI
16761 MOVL CX, 24(SP)(R9*4)
16762 MOVL CX, 16408(SP)(R10*4)
16763 MOVQ (DX)(BX*1), R9
16764 MOVQ (DX)(DI*1), R10
16765 CMPQ R9, SI
16766 JEQ candidate_match_encodeSnappyBetterBlockAsm10B
16767 CMPQ R10, SI
16768 JNE no_short_found_encodeSnappyBetterBlockAsm10B
16769 MOVL DI, BX
16770 JMP candidate_match_encodeSnappyBetterBlockAsm10B
16771
16772no_short_found_encodeSnappyBetterBlockAsm10B:
16773 CMPL R9, SI
16774 JEQ candidate_match_encodeSnappyBetterBlockAsm10B
16775 CMPL R10, SI
16776 JEQ candidateS_match_encodeSnappyBetterBlockAsm10B
16777 MOVL 20(SP), CX
16778 JMP search_loop_encodeSnappyBetterBlockAsm10B
16779
16780candidateS_match_encodeSnappyBetterBlockAsm10B:
16781 SHRQ $0x08, SI
16782 MOVQ SI, R9
16783 SHLQ $0x10, R9
16784 IMULQ R8, R9
16785 SHRQ $0x34, R9
16786 MOVL 24(SP)(R9*4), BX
16787 INCL CX
16788 MOVL CX, 24(SP)(R9*4)
16789 CMPL (DX)(BX*1), SI
16790 JEQ candidate_match_encodeSnappyBetterBlockAsm10B
16791 DECL CX
16792 MOVL DI, BX
16793
16794candidate_match_encodeSnappyBetterBlockAsm10B:
16795 MOVL 12(SP), SI
16796 TESTL BX, BX
16797 JZ match_extend_back_end_encodeSnappyBetterBlockAsm10B
16798
16799match_extend_back_loop_encodeSnappyBetterBlockAsm10B:
16800 CMPL CX, SI
16801 JBE match_extend_back_end_encodeSnappyBetterBlockAsm10B
16802 MOVB -1(DX)(BX*1), DI
16803 MOVB -1(DX)(CX*1), R8
16804 CMPB DI, R8
16805 JNE match_extend_back_end_encodeSnappyBetterBlockAsm10B
16806 LEAL -1(CX), CX
16807 DECL BX
16808 JZ match_extend_back_end_encodeSnappyBetterBlockAsm10B
16809 JMP match_extend_back_loop_encodeSnappyBetterBlockAsm10B
16810
16811match_extend_back_end_encodeSnappyBetterBlockAsm10B:
16812 MOVL CX, SI
16813 SUBL 12(SP), SI
16814 LEAQ 3(AX)(SI*1), SI
16815 CMPQ SI, (SP)
16816 JB match_dst_size_check_encodeSnappyBetterBlockAsm10B
16817 MOVQ $0x00000000, ret+48(FP)
16818 RET
16819
16820match_dst_size_check_encodeSnappyBetterBlockAsm10B:
16821 MOVL CX, SI
16822 ADDL $0x04, CX
16823 ADDL $0x04, BX
16824 MOVQ src_len+32(FP), DI
16825 SUBL CX, DI
16826 LEAQ (DX)(CX*1), R8
16827 LEAQ (DX)(BX*1), R9
16828
16829 // matchLen
16830 XORL R11, R11
16831
16832matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm10B:
16833 CMPL DI, $0x10
16834 JB matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm10B
16835 MOVQ (R8)(R11*1), R10
16836 MOVQ 8(R8)(R11*1), R12
16837 XORQ (R9)(R11*1), R10
16838 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm10B
16839 XORQ 8(R9)(R11*1), R12
16840 JNZ matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm10B
16841 LEAL -16(DI), DI
16842 LEAL 16(R11), R11
16843 JMP matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm10B
16844
16845matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm10B:
16846#ifdef GOAMD64_v3
16847 TZCNTQ R12, R12
16848
16849#else
16850 BSFQ R12, R12
16851
16852#endif
16853 SARQ $0x03, R12
16854 LEAL 8(R11)(R12*1), R11
16855 JMP match_nolit_end_encodeSnappyBetterBlockAsm10B
16856
16857matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm10B:
16858 CMPL DI, $0x08
16859 JB matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm10B
16860 MOVQ (R8)(R11*1), R10
16861 XORQ (R9)(R11*1), R10
16862 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm10B
16863 LEAL -8(DI), DI
16864 LEAL 8(R11), R11
16865 JMP matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm10B
16866
16867matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm10B:
16868#ifdef GOAMD64_v3
16869 TZCNTQ R10, R10
16870
16871#else
16872 BSFQ R10, R10
16873
16874#endif
16875 SARQ $0x03, R10
16876 LEAL (R11)(R10*1), R11
16877 JMP match_nolit_end_encodeSnappyBetterBlockAsm10B
16878
16879matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm10B:
16880 CMPL DI, $0x04
16881 JB matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm10B
16882 MOVL (R8)(R11*1), R10
16883 CMPL (R9)(R11*1), R10
16884 JNE matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm10B
16885 LEAL -4(DI), DI
16886 LEAL 4(R11), R11
16887
16888matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm10B:
16889 CMPL DI, $0x01
16890 JE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm10B
16891 JB match_nolit_end_encodeSnappyBetterBlockAsm10B
16892 MOVW (R8)(R11*1), R10
16893 CMPW (R9)(R11*1), R10
16894 JNE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm10B
16895 LEAL 2(R11), R11
16896 SUBL $0x02, DI
16897 JZ match_nolit_end_encodeSnappyBetterBlockAsm10B
16898
16899matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm10B:
16900 MOVB (R8)(R11*1), R10
16901 CMPB (R9)(R11*1), R10
16902 JNE match_nolit_end_encodeSnappyBetterBlockAsm10B
16903 LEAL 1(R11), R11
16904
16905match_nolit_end_encodeSnappyBetterBlockAsm10B:
16906 MOVL CX, DI
16907 SUBL BX, DI
16908
16909 // Check if repeat
16910 MOVL DI, 16(SP)
16911 MOVL 12(SP), BX
16912 CMPL BX, SI
16913 JEQ emit_literal_done_match_emit_encodeSnappyBetterBlockAsm10B
16914 MOVL SI, R8
16915 MOVL SI, 12(SP)
16916 LEAQ (DX)(BX*1), R9
16917 SUBL BX, R8
16918 LEAL -1(R8), BX
16919 CMPL BX, $0x3c
16920 JB one_byte_match_emit_encodeSnappyBetterBlockAsm10B
16921 CMPL BX, $0x00000100
16922 JB two_bytes_match_emit_encodeSnappyBetterBlockAsm10B
16923 JB three_bytes_match_emit_encodeSnappyBetterBlockAsm10B
16924
16925three_bytes_match_emit_encodeSnappyBetterBlockAsm10B:
16926 MOVB $0xf4, (AX)
16927 MOVW BX, 1(AX)
16928 ADDQ $0x03, AX
16929 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm10B
16930
16931two_bytes_match_emit_encodeSnappyBetterBlockAsm10B:
16932 MOVB $0xf0, (AX)
16933 MOVB BL, 1(AX)
16934 ADDQ $0x02, AX
16935 CMPL BX, $0x40
16936 JB memmove_match_emit_encodeSnappyBetterBlockAsm10B
16937 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm10B
16938
16939one_byte_match_emit_encodeSnappyBetterBlockAsm10B:
16940 SHLB $0x02, BL
16941 MOVB BL, (AX)
16942 ADDQ $0x01, AX
16943
16944memmove_match_emit_encodeSnappyBetterBlockAsm10B:
16945 LEAQ (AX)(R8*1), BX
16946
16947 // genMemMoveShort
16948 CMPQ R8, $0x08
16949 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_8
16950 CMPQ R8, $0x10
16951 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_8through16
16952 CMPQ R8, $0x20
16953 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_17through32
16954 JMP emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_33through64
16955
16956emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_8:
16957 MOVQ (R9), R10
16958 MOVQ R10, (AX)
16959 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm10B
16960
16961emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_8through16:
16962 MOVQ (R9), R10
16963 MOVQ -8(R9)(R8*1), R9
16964 MOVQ R10, (AX)
16965 MOVQ R9, -8(AX)(R8*1)
16966 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm10B
16967
16968emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_17through32:
16969 MOVOU (R9), X0
16970 MOVOU -16(R9)(R8*1), X1
16971 MOVOU X0, (AX)
16972 MOVOU X1, -16(AX)(R8*1)
16973 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm10B
16974
16975emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm10B_memmove_move_33through64:
16976 MOVOU (R9), X0
16977 MOVOU 16(R9), X1
16978 MOVOU -32(R9)(R8*1), X2
16979 MOVOU -16(R9)(R8*1), X3
16980 MOVOU X0, (AX)
16981 MOVOU X1, 16(AX)
16982 MOVOU X2, -32(AX)(R8*1)
16983 MOVOU X3, -16(AX)(R8*1)
16984
16985memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm10B:
16986 MOVQ BX, AX
16987 JMP emit_literal_done_match_emit_encodeSnappyBetterBlockAsm10B
16988
16989memmove_long_match_emit_encodeSnappyBetterBlockAsm10B:
16990 LEAQ (AX)(R8*1), BX
16991
16992 // genMemMoveLong
16993 MOVOU (R9), X0
16994 MOVOU 16(R9), X1
16995 MOVOU -32(R9)(R8*1), X2
16996 MOVOU -16(R9)(R8*1), X3
16997 MOVQ R8, R12
16998 SHRQ $0x05, R12
16999 MOVQ AX, R10
17000 ANDL $0x0000001f, R10
17001 MOVQ $0x00000040, R13
17002 SUBQ R10, R13
17003 DECQ R12
17004 JA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm10Blarge_forward_sse_loop_32
17005 LEAQ -32(R9)(R13*1), R10
17006 LEAQ -32(AX)(R13*1), R14
17007
17008emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm10Blarge_big_loop_back:
17009 MOVOU (R10), X4
17010 MOVOU 16(R10), X5
17011 MOVOA X4, (R14)
17012 MOVOA X5, 16(R14)
17013 ADDQ $0x20, R14
17014 ADDQ $0x20, R10
17015 ADDQ $0x20, R13
17016 DECQ R12
17017 JNA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm10Blarge_big_loop_back
17018
17019emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm10Blarge_forward_sse_loop_32:
17020 MOVOU -32(R9)(R13*1), X4
17021 MOVOU -16(R9)(R13*1), X5
17022 MOVOA X4, -32(AX)(R13*1)
17023 MOVOA X5, -16(AX)(R13*1)
17024 ADDQ $0x20, R13
17025 CMPQ R8, R13
17026 JAE emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm10Blarge_forward_sse_loop_32
17027 MOVOU X0, (AX)
17028 MOVOU X1, 16(AX)
17029 MOVOU X2, -32(AX)(R8*1)
17030 MOVOU X3, -16(AX)(R8*1)
17031 MOVQ BX, AX
17032
17033emit_literal_done_match_emit_encodeSnappyBetterBlockAsm10B:
17034 ADDL R11, CX
17035 ADDL $0x04, R11
17036 MOVL CX, 12(SP)
17037
17038 // emitCopy
17039two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm10B:
17040 CMPL R11, $0x40
17041 JBE two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm10B
17042 MOVB $0xee, (AX)
17043 MOVW DI, 1(AX)
17044 LEAL -60(R11), R11
17045 ADDQ $0x03, AX
17046 JMP two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm10B
17047
17048two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm10B:
17049 MOVL R11, BX
17050 SHLL $0x02, BX
17051 CMPL R11, $0x0c
17052 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm10B
17053 CMPL DI, $0x00000800
17054 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm10B
17055 LEAL -15(BX), BX
17056 MOVB DI, 1(AX)
17057 SHRL $0x08, DI
17058 SHLL $0x05, DI
17059 ORL DI, BX
17060 MOVB BL, (AX)
17061 ADDQ $0x02, AX
17062 JMP match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm10B
17063
17064emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm10B:
17065 LEAL -2(BX), BX
17066 MOVB BL, (AX)
17067 MOVW DI, 1(AX)
17068 ADDQ $0x03, AX
17069
17070match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm10B:
17071 CMPL CX, 8(SP)
17072 JAE emit_remainder_encodeSnappyBetterBlockAsm10B
17073 CMPQ AX, (SP)
17074 JB match_nolit_dst_ok_encodeSnappyBetterBlockAsm10B
17075 MOVQ $0x00000000, ret+48(FP)
17076 RET
17077
17078match_nolit_dst_ok_encodeSnappyBetterBlockAsm10B:
17079 MOVQ $0x0000cf1bbcdcbf9b, BX
17080 MOVQ $0x9e3779b1, DI
17081 LEAQ 1(SI), SI
17082 LEAQ -2(CX), R8
17083 MOVQ (DX)(SI*1), R9
17084 MOVQ 1(DX)(SI*1), R10
17085 MOVQ (DX)(R8*1), R11
17086 MOVQ 1(DX)(R8*1), R12
17087 SHLQ $0x10, R9
17088 IMULQ BX, R9
17089 SHRQ $0x34, R9
17090 SHLQ $0x20, R10
17091 IMULQ DI, R10
17092 SHRQ $0x36, R10
17093 SHLQ $0x10, R11
17094 IMULQ BX, R11
17095 SHRQ $0x34, R11
17096 SHLQ $0x20, R12
17097 IMULQ DI, R12
17098 SHRQ $0x36, R12
17099 LEAQ 1(SI), DI
17100 LEAQ 1(R8), R13
17101 MOVL SI, 24(SP)(R9*4)
17102 MOVL R8, 24(SP)(R11*4)
17103 MOVL DI, 16408(SP)(R10*4)
17104 MOVL R13, 16408(SP)(R12*4)
17105 LEAQ 1(R8)(SI*1), DI
17106 SHRQ $0x01, DI
17107 ADDQ $0x01, SI
17108 SUBQ $0x01, R8
17109
17110index_loop_encodeSnappyBetterBlockAsm10B:
17111 CMPQ DI, R8
17112 JAE search_loop_encodeSnappyBetterBlockAsm10B
17113 MOVQ (DX)(SI*1), R9
17114 MOVQ (DX)(DI*1), R10
17115 SHLQ $0x10, R9
17116 IMULQ BX, R9
17117 SHRQ $0x34, R9
17118 SHLQ $0x10, R10
17119 IMULQ BX, R10
17120 SHRQ $0x34, R10
17121 MOVL SI, 24(SP)(R9*4)
17122 MOVL DI, 24(SP)(R10*4)
17123 ADDQ $0x02, SI
17124 ADDQ $0x02, DI
17125 JMP index_loop_encodeSnappyBetterBlockAsm10B
17126
17127emit_remainder_encodeSnappyBetterBlockAsm10B:
17128 MOVQ src_len+32(FP), CX
17129 SUBL 12(SP), CX
17130 LEAQ 3(AX)(CX*1), CX
17131 CMPQ CX, (SP)
17132 JB emit_remainder_ok_encodeSnappyBetterBlockAsm10B
17133 MOVQ $0x00000000, ret+48(FP)
17134 RET
17135
17136emit_remainder_ok_encodeSnappyBetterBlockAsm10B:
17137 MOVQ src_len+32(FP), CX
17138 MOVL 12(SP), BX
17139 CMPL BX, CX
17140 JEQ emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm10B
17141 MOVL CX, SI
17142 MOVL CX, 12(SP)
17143 LEAQ (DX)(BX*1), CX
17144 SUBL BX, SI
17145 LEAL -1(SI), DX
17146 CMPL DX, $0x3c
17147 JB one_byte_emit_remainder_encodeSnappyBetterBlockAsm10B
17148 CMPL DX, $0x00000100
17149 JB two_bytes_emit_remainder_encodeSnappyBetterBlockAsm10B
17150 JB three_bytes_emit_remainder_encodeSnappyBetterBlockAsm10B
17151
17152three_bytes_emit_remainder_encodeSnappyBetterBlockAsm10B:
17153 MOVB $0xf4, (AX)
17154 MOVW DX, 1(AX)
17155 ADDQ $0x03, AX
17156 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10B
17157
17158two_bytes_emit_remainder_encodeSnappyBetterBlockAsm10B:
17159 MOVB $0xf0, (AX)
17160 MOVB DL, 1(AX)
17161 ADDQ $0x02, AX
17162 CMPL DX, $0x40
17163 JB memmove_emit_remainder_encodeSnappyBetterBlockAsm10B
17164 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10B
17165
17166one_byte_emit_remainder_encodeSnappyBetterBlockAsm10B:
17167 SHLB $0x02, DL
17168 MOVB DL, (AX)
17169 ADDQ $0x01, AX
17170
17171memmove_emit_remainder_encodeSnappyBetterBlockAsm10B:
17172 LEAQ (AX)(SI*1), DX
17173 MOVL SI, BX
17174
17175 // genMemMoveShort
17176 CMPQ BX, $0x03
17177 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_1or2
17178 JE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_3
17179 CMPQ BX, $0x08
17180 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_4through7
17181 CMPQ BX, $0x10
17182 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_8through16
17183 CMPQ BX, $0x20
17184 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_17through32
17185 JMP emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_33through64
17186
17187emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_1or2:
17188 MOVB (CX), SI
17189 MOVB -1(CX)(BX*1), CL
17190 MOVB SI, (AX)
17191 MOVB CL, -1(AX)(BX*1)
17192 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm10B
17193
17194emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_3:
17195 MOVW (CX), SI
17196 MOVB 2(CX), CL
17197 MOVW SI, (AX)
17198 MOVB CL, 2(AX)
17199 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm10B
17200
17201emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_4through7:
17202 MOVL (CX), SI
17203 MOVL -4(CX)(BX*1), CX
17204 MOVL SI, (AX)
17205 MOVL CX, -4(AX)(BX*1)
17206 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm10B
17207
17208emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_8through16:
17209 MOVQ (CX), SI
17210 MOVQ -8(CX)(BX*1), CX
17211 MOVQ SI, (AX)
17212 MOVQ CX, -8(AX)(BX*1)
17213 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm10B
17214
17215emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_17through32:
17216 MOVOU (CX), X0
17217 MOVOU -16(CX)(BX*1), X1
17218 MOVOU X0, (AX)
17219 MOVOU X1, -16(AX)(BX*1)
17220 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm10B
17221
17222emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm10B_memmove_move_33through64:
17223 MOVOU (CX), X0
17224 MOVOU 16(CX), X1
17225 MOVOU -32(CX)(BX*1), X2
17226 MOVOU -16(CX)(BX*1), X3
17227 MOVOU X0, (AX)
17228 MOVOU X1, 16(AX)
17229 MOVOU X2, -32(AX)(BX*1)
17230 MOVOU X3, -16(AX)(BX*1)
17231
17232memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm10B:
17233 MOVQ DX, AX
17234 JMP emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm10B
17235
17236memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10B:
17237 LEAQ (AX)(SI*1), DX
17238 MOVL SI, BX
17239
17240 // genMemMoveLong
17241 MOVOU (CX), X0
17242 MOVOU 16(CX), X1
17243 MOVOU -32(CX)(BX*1), X2
17244 MOVOU -16(CX)(BX*1), X3
17245 MOVQ BX, DI
17246 SHRQ $0x05, DI
17247 MOVQ AX, SI
17248 ANDL $0x0000001f, SI
17249 MOVQ $0x00000040, R8
17250 SUBQ SI, R8
17251 DECQ DI
17252 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10Blarge_forward_sse_loop_32
17253 LEAQ -32(CX)(R8*1), SI
17254 LEAQ -32(AX)(R8*1), R9
17255
17256emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10Blarge_big_loop_back:
17257 MOVOU (SI), X4
17258 MOVOU 16(SI), X5
17259 MOVOA X4, (R9)
17260 MOVOA X5, 16(R9)
17261 ADDQ $0x20, R9
17262 ADDQ $0x20, SI
17263 ADDQ $0x20, R8
17264 DECQ DI
17265 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10Blarge_big_loop_back
17266
17267emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10Blarge_forward_sse_loop_32:
17268 MOVOU -32(CX)(R8*1), X4
17269 MOVOU -16(CX)(R8*1), X5
17270 MOVOA X4, -32(AX)(R8*1)
17271 MOVOA X5, -16(AX)(R8*1)
17272 ADDQ $0x20, R8
17273 CMPQ BX, R8
17274 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm10Blarge_forward_sse_loop_32
17275 MOVOU X0, (AX)
17276 MOVOU X1, 16(AX)
17277 MOVOU X2, -32(AX)(BX*1)
17278 MOVOU X3, -16(AX)(BX*1)
17279 MOVQ DX, AX
17280
17281emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm10B:
17282 MOVQ dst_base+0(FP), CX
17283 SUBQ CX, AX
17284 MOVQ AX, ret+48(FP)
17285 RET
17286
17287// func encodeSnappyBetterBlockAsm8B(dst []byte, src []byte) int
17288// Requires: BMI, SSE2
17289TEXT ·encodeSnappyBetterBlockAsm8B(SB), $5144-56
17290 MOVQ dst_base+0(FP), AX
17291 MOVQ $0x00000028, CX
17292 LEAQ 24(SP), DX
17293 PXOR X0, X0
17294
17295zero_loop_encodeSnappyBetterBlockAsm8B:
17296 MOVOU X0, (DX)
17297 MOVOU X0, 16(DX)
17298 MOVOU X0, 32(DX)
17299 MOVOU X0, 48(DX)
17300 MOVOU X0, 64(DX)
17301 MOVOU X0, 80(DX)
17302 MOVOU X0, 96(DX)
17303 MOVOU X0, 112(DX)
17304 ADDQ $0x80, DX
17305 DECQ CX
17306 JNZ zero_loop_encodeSnappyBetterBlockAsm8B
17307 MOVL $0x00000000, 12(SP)
17308 MOVQ src_len+32(FP), CX
17309 LEAQ -9(CX), DX
17310 LEAQ -8(CX), BX
17311 MOVL BX, 8(SP)
17312 SHRQ $0x05, CX
17313 SUBL CX, DX
17314 LEAQ (AX)(DX*1), DX
17315 MOVQ DX, (SP)
17316 MOVL $0x00000001, CX
17317 MOVL $0x00000000, 16(SP)
17318 MOVQ src_base+24(FP), DX
17319
17320search_loop_encodeSnappyBetterBlockAsm8B:
17321 MOVL CX, BX
17322 SUBL 12(SP), BX
17323 SHRL $0x04, BX
17324 LEAL 1(CX)(BX*1), BX
17325 CMPL BX, 8(SP)
17326 JAE emit_remainder_encodeSnappyBetterBlockAsm8B
17327 MOVQ (DX)(CX*1), SI
17328 MOVL BX, 20(SP)
17329 MOVQ $0x0000cf1bbcdcbf9b, R8
17330 MOVQ $0x9e3779b1, BX
17331 MOVQ SI, R9
17332 MOVQ SI, R10
17333 SHLQ $0x10, R9
17334 IMULQ R8, R9
17335 SHRQ $0x36, R9
17336 SHLQ $0x20, R10
17337 IMULQ BX, R10
17338 SHRQ $0x38, R10
17339 MOVL 24(SP)(R9*4), BX
17340 MOVL 4120(SP)(R10*4), DI
17341 MOVL CX, 24(SP)(R9*4)
17342 MOVL CX, 4120(SP)(R10*4)
17343 MOVQ (DX)(BX*1), R9
17344 MOVQ (DX)(DI*1), R10
17345 CMPQ R9, SI
17346 JEQ candidate_match_encodeSnappyBetterBlockAsm8B
17347 CMPQ R10, SI
17348 JNE no_short_found_encodeSnappyBetterBlockAsm8B
17349 MOVL DI, BX
17350 JMP candidate_match_encodeSnappyBetterBlockAsm8B
17351
17352no_short_found_encodeSnappyBetterBlockAsm8B:
17353 CMPL R9, SI
17354 JEQ candidate_match_encodeSnappyBetterBlockAsm8B
17355 CMPL R10, SI
17356 JEQ candidateS_match_encodeSnappyBetterBlockAsm8B
17357 MOVL 20(SP), CX
17358 JMP search_loop_encodeSnappyBetterBlockAsm8B
17359
17360candidateS_match_encodeSnappyBetterBlockAsm8B:
17361 SHRQ $0x08, SI
17362 MOVQ SI, R9
17363 SHLQ $0x10, R9
17364 IMULQ R8, R9
17365 SHRQ $0x36, R9
17366 MOVL 24(SP)(R9*4), BX
17367 INCL CX
17368 MOVL CX, 24(SP)(R9*4)
17369 CMPL (DX)(BX*1), SI
17370 JEQ candidate_match_encodeSnappyBetterBlockAsm8B
17371 DECL CX
17372 MOVL DI, BX
17373
17374candidate_match_encodeSnappyBetterBlockAsm8B:
17375 MOVL 12(SP), SI
17376 TESTL BX, BX
17377 JZ match_extend_back_end_encodeSnappyBetterBlockAsm8B
17378
17379match_extend_back_loop_encodeSnappyBetterBlockAsm8B:
17380 CMPL CX, SI
17381 JBE match_extend_back_end_encodeSnappyBetterBlockAsm8B
17382 MOVB -1(DX)(BX*1), DI
17383 MOVB -1(DX)(CX*1), R8
17384 CMPB DI, R8
17385 JNE match_extend_back_end_encodeSnappyBetterBlockAsm8B
17386 LEAL -1(CX), CX
17387 DECL BX
17388 JZ match_extend_back_end_encodeSnappyBetterBlockAsm8B
17389 JMP match_extend_back_loop_encodeSnappyBetterBlockAsm8B
17390
17391match_extend_back_end_encodeSnappyBetterBlockAsm8B:
17392 MOVL CX, SI
17393 SUBL 12(SP), SI
17394 LEAQ 3(AX)(SI*1), SI
17395 CMPQ SI, (SP)
17396 JB match_dst_size_check_encodeSnappyBetterBlockAsm8B
17397 MOVQ $0x00000000, ret+48(FP)
17398 RET
17399
17400match_dst_size_check_encodeSnappyBetterBlockAsm8B:
17401 MOVL CX, SI
17402 ADDL $0x04, CX
17403 ADDL $0x04, BX
17404 MOVQ src_len+32(FP), DI
17405 SUBL CX, DI
17406 LEAQ (DX)(CX*1), R8
17407 LEAQ (DX)(BX*1), R9
17408
17409 // matchLen
17410 XORL R11, R11
17411
17412matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm8B:
17413 CMPL DI, $0x10
17414 JB matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm8B
17415 MOVQ (R8)(R11*1), R10
17416 MOVQ 8(R8)(R11*1), R12
17417 XORQ (R9)(R11*1), R10
17418 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm8B
17419 XORQ 8(R9)(R11*1), R12
17420 JNZ matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm8B
17421 LEAL -16(DI), DI
17422 LEAL 16(R11), R11
17423 JMP matchlen_loopback_16_match_nolit_encodeSnappyBetterBlockAsm8B
17424
17425matchlen_bsf_16match_nolit_encodeSnappyBetterBlockAsm8B:
17426#ifdef GOAMD64_v3
17427 TZCNTQ R12, R12
17428
17429#else
17430 BSFQ R12, R12
17431
17432#endif
17433 SARQ $0x03, R12
17434 LEAL 8(R11)(R12*1), R11
17435 JMP match_nolit_end_encodeSnappyBetterBlockAsm8B
17436
17437matchlen_match8_match_nolit_encodeSnappyBetterBlockAsm8B:
17438 CMPL DI, $0x08
17439 JB matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm8B
17440 MOVQ (R8)(R11*1), R10
17441 XORQ (R9)(R11*1), R10
17442 JNZ matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm8B
17443 LEAL -8(DI), DI
17444 LEAL 8(R11), R11
17445 JMP matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm8B
17446
17447matchlen_bsf_8_match_nolit_encodeSnappyBetterBlockAsm8B:
17448#ifdef GOAMD64_v3
17449 TZCNTQ R10, R10
17450
17451#else
17452 BSFQ R10, R10
17453
17454#endif
17455 SARQ $0x03, R10
17456 LEAL (R11)(R10*1), R11
17457 JMP match_nolit_end_encodeSnappyBetterBlockAsm8B
17458
17459matchlen_match4_match_nolit_encodeSnappyBetterBlockAsm8B:
17460 CMPL DI, $0x04
17461 JB matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm8B
17462 MOVL (R8)(R11*1), R10
17463 CMPL (R9)(R11*1), R10
17464 JNE matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm8B
17465 LEAL -4(DI), DI
17466 LEAL 4(R11), R11
17467
17468matchlen_match2_match_nolit_encodeSnappyBetterBlockAsm8B:
17469 CMPL DI, $0x01
17470 JE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm8B
17471 JB match_nolit_end_encodeSnappyBetterBlockAsm8B
17472 MOVW (R8)(R11*1), R10
17473 CMPW (R9)(R11*1), R10
17474 JNE matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm8B
17475 LEAL 2(R11), R11
17476 SUBL $0x02, DI
17477 JZ match_nolit_end_encodeSnappyBetterBlockAsm8B
17478
17479matchlen_match1_match_nolit_encodeSnappyBetterBlockAsm8B:
17480 MOVB (R8)(R11*1), R10
17481 CMPB (R9)(R11*1), R10
17482 JNE match_nolit_end_encodeSnappyBetterBlockAsm8B
17483 LEAL 1(R11), R11
17484
17485match_nolit_end_encodeSnappyBetterBlockAsm8B:
17486 MOVL CX, DI
17487 SUBL BX, DI
17488
17489 // Check if repeat
17490 MOVL DI, 16(SP)
17491 MOVL 12(SP), BX
17492 CMPL BX, SI
17493 JEQ emit_literal_done_match_emit_encodeSnappyBetterBlockAsm8B
17494 MOVL SI, R8
17495 MOVL SI, 12(SP)
17496 LEAQ (DX)(BX*1), R9
17497 SUBL BX, R8
17498 LEAL -1(R8), BX
17499 CMPL BX, $0x3c
17500 JB one_byte_match_emit_encodeSnappyBetterBlockAsm8B
17501 CMPL BX, $0x00000100
17502 JB two_bytes_match_emit_encodeSnappyBetterBlockAsm8B
17503 JB three_bytes_match_emit_encodeSnappyBetterBlockAsm8B
17504
17505three_bytes_match_emit_encodeSnappyBetterBlockAsm8B:
17506 MOVB $0xf4, (AX)
17507 MOVW BX, 1(AX)
17508 ADDQ $0x03, AX
17509 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm8B
17510
17511two_bytes_match_emit_encodeSnappyBetterBlockAsm8B:
17512 MOVB $0xf0, (AX)
17513 MOVB BL, 1(AX)
17514 ADDQ $0x02, AX
17515 CMPL BX, $0x40
17516 JB memmove_match_emit_encodeSnappyBetterBlockAsm8B
17517 JMP memmove_long_match_emit_encodeSnappyBetterBlockAsm8B
17518
17519one_byte_match_emit_encodeSnappyBetterBlockAsm8B:
17520 SHLB $0x02, BL
17521 MOVB BL, (AX)
17522 ADDQ $0x01, AX
17523
17524memmove_match_emit_encodeSnappyBetterBlockAsm8B:
17525 LEAQ (AX)(R8*1), BX
17526
17527 // genMemMoveShort
17528 CMPQ R8, $0x08
17529 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_8
17530 CMPQ R8, $0x10
17531 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_8through16
17532 CMPQ R8, $0x20
17533 JBE emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_17through32
17534 JMP emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_33through64
17535
17536emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_8:
17537 MOVQ (R9), R10
17538 MOVQ R10, (AX)
17539 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm8B
17540
17541emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_8through16:
17542 MOVQ (R9), R10
17543 MOVQ -8(R9)(R8*1), R9
17544 MOVQ R10, (AX)
17545 MOVQ R9, -8(AX)(R8*1)
17546 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm8B
17547
17548emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_17through32:
17549 MOVOU (R9), X0
17550 MOVOU -16(R9)(R8*1), X1
17551 MOVOU X0, (AX)
17552 MOVOU X1, -16(AX)(R8*1)
17553 JMP memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm8B
17554
17555emit_lit_memmove_match_emit_encodeSnappyBetterBlockAsm8B_memmove_move_33through64:
17556 MOVOU (R9), X0
17557 MOVOU 16(R9), X1
17558 MOVOU -32(R9)(R8*1), X2
17559 MOVOU -16(R9)(R8*1), X3
17560 MOVOU X0, (AX)
17561 MOVOU X1, 16(AX)
17562 MOVOU X2, -32(AX)(R8*1)
17563 MOVOU X3, -16(AX)(R8*1)
17564
17565memmove_end_copy_match_emit_encodeSnappyBetterBlockAsm8B:
17566 MOVQ BX, AX
17567 JMP emit_literal_done_match_emit_encodeSnappyBetterBlockAsm8B
17568
17569memmove_long_match_emit_encodeSnappyBetterBlockAsm8B:
17570 LEAQ (AX)(R8*1), BX
17571
17572 // genMemMoveLong
17573 MOVOU (R9), X0
17574 MOVOU 16(R9), X1
17575 MOVOU -32(R9)(R8*1), X2
17576 MOVOU -16(R9)(R8*1), X3
17577 MOVQ R8, R12
17578 SHRQ $0x05, R12
17579 MOVQ AX, R10
17580 ANDL $0x0000001f, R10
17581 MOVQ $0x00000040, R13
17582 SUBQ R10, R13
17583 DECQ R12
17584 JA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm8Blarge_forward_sse_loop_32
17585 LEAQ -32(R9)(R13*1), R10
17586 LEAQ -32(AX)(R13*1), R14
17587
17588emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm8Blarge_big_loop_back:
17589 MOVOU (R10), X4
17590 MOVOU 16(R10), X5
17591 MOVOA X4, (R14)
17592 MOVOA X5, 16(R14)
17593 ADDQ $0x20, R14
17594 ADDQ $0x20, R10
17595 ADDQ $0x20, R13
17596 DECQ R12
17597 JNA emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm8Blarge_big_loop_back
17598
17599emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm8Blarge_forward_sse_loop_32:
17600 MOVOU -32(R9)(R13*1), X4
17601 MOVOU -16(R9)(R13*1), X5
17602 MOVOA X4, -32(AX)(R13*1)
17603 MOVOA X5, -16(AX)(R13*1)
17604 ADDQ $0x20, R13
17605 CMPQ R8, R13
17606 JAE emit_lit_memmove_long_match_emit_encodeSnappyBetterBlockAsm8Blarge_forward_sse_loop_32
17607 MOVOU X0, (AX)
17608 MOVOU X1, 16(AX)
17609 MOVOU X2, -32(AX)(R8*1)
17610 MOVOU X3, -16(AX)(R8*1)
17611 MOVQ BX, AX
17612
17613emit_literal_done_match_emit_encodeSnappyBetterBlockAsm8B:
17614 ADDL R11, CX
17615 ADDL $0x04, R11
17616 MOVL CX, 12(SP)
17617
17618 // emitCopy
17619two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm8B:
17620 CMPL R11, $0x40
17621 JBE two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm8B
17622 MOVB $0xee, (AX)
17623 MOVW DI, 1(AX)
17624 LEAL -60(R11), R11
17625 ADDQ $0x03, AX
17626 JMP two_byte_offset_match_nolit_encodeSnappyBetterBlockAsm8B
17627
17628two_byte_offset_short_match_nolit_encodeSnappyBetterBlockAsm8B:
17629 MOVL R11, BX
17630 SHLL $0x02, BX
17631 CMPL R11, $0x0c
17632 JAE emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm8B
17633 LEAL -15(BX), BX
17634 MOVB DI, 1(AX)
17635 SHRL $0x08, DI
17636 SHLL $0x05, DI
17637 ORL DI, BX
17638 MOVB BL, (AX)
17639 ADDQ $0x02, AX
17640 JMP match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm8B
17641
17642emit_copy_three_match_nolit_encodeSnappyBetterBlockAsm8B:
17643 LEAL -2(BX), BX
17644 MOVB BL, (AX)
17645 MOVW DI, 1(AX)
17646 ADDQ $0x03, AX
17647
17648match_nolit_emitcopy_end_encodeSnappyBetterBlockAsm8B:
17649 CMPL CX, 8(SP)
17650 JAE emit_remainder_encodeSnappyBetterBlockAsm8B
17651 CMPQ AX, (SP)
17652 JB match_nolit_dst_ok_encodeSnappyBetterBlockAsm8B
17653 MOVQ $0x00000000, ret+48(FP)
17654 RET
17655
17656match_nolit_dst_ok_encodeSnappyBetterBlockAsm8B:
17657 MOVQ $0x0000cf1bbcdcbf9b, BX
17658 MOVQ $0x9e3779b1, DI
17659 LEAQ 1(SI), SI
17660 LEAQ -2(CX), R8
17661 MOVQ (DX)(SI*1), R9
17662 MOVQ 1(DX)(SI*1), R10
17663 MOVQ (DX)(R8*1), R11
17664 MOVQ 1(DX)(R8*1), R12
17665 SHLQ $0x10, R9
17666 IMULQ BX, R9
17667 SHRQ $0x36, R9
17668 SHLQ $0x20, R10
17669 IMULQ DI, R10
17670 SHRQ $0x38, R10
17671 SHLQ $0x10, R11
17672 IMULQ BX, R11
17673 SHRQ $0x36, R11
17674 SHLQ $0x20, R12
17675 IMULQ DI, R12
17676 SHRQ $0x38, R12
17677 LEAQ 1(SI), DI
17678 LEAQ 1(R8), R13
17679 MOVL SI, 24(SP)(R9*4)
17680 MOVL R8, 24(SP)(R11*4)
17681 MOVL DI, 4120(SP)(R10*4)
17682 MOVL R13, 4120(SP)(R12*4)
17683 LEAQ 1(R8)(SI*1), DI
17684 SHRQ $0x01, DI
17685 ADDQ $0x01, SI
17686 SUBQ $0x01, R8
17687
17688index_loop_encodeSnappyBetterBlockAsm8B:
17689 CMPQ DI, R8
17690 JAE search_loop_encodeSnappyBetterBlockAsm8B
17691 MOVQ (DX)(SI*1), R9
17692 MOVQ (DX)(DI*1), R10
17693 SHLQ $0x10, R9
17694 IMULQ BX, R9
17695 SHRQ $0x36, R9
17696 SHLQ $0x10, R10
17697 IMULQ BX, R10
17698 SHRQ $0x36, R10
17699 MOVL SI, 24(SP)(R9*4)
17700 MOVL DI, 24(SP)(R10*4)
17701 ADDQ $0x02, SI
17702 ADDQ $0x02, DI
17703 JMP index_loop_encodeSnappyBetterBlockAsm8B
17704
17705emit_remainder_encodeSnappyBetterBlockAsm8B:
17706 MOVQ src_len+32(FP), CX
17707 SUBL 12(SP), CX
17708 LEAQ 3(AX)(CX*1), CX
17709 CMPQ CX, (SP)
17710 JB emit_remainder_ok_encodeSnappyBetterBlockAsm8B
17711 MOVQ $0x00000000, ret+48(FP)
17712 RET
17713
17714emit_remainder_ok_encodeSnappyBetterBlockAsm8B:
17715 MOVQ src_len+32(FP), CX
17716 MOVL 12(SP), BX
17717 CMPL BX, CX
17718 JEQ emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm8B
17719 MOVL CX, SI
17720 MOVL CX, 12(SP)
17721 LEAQ (DX)(BX*1), CX
17722 SUBL BX, SI
17723 LEAL -1(SI), DX
17724 CMPL DX, $0x3c
17725 JB one_byte_emit_remainder_encodeSnappyBetterBlockAsm8B
17726 CMPL DX, $0x00000100
17727 JB two_bytes_emit_remainder_encodeSnappyBetterBlockAsm8B
17728 JB three_bytes_emit_remainder_encodeSnappyBetterBlockAsm8B
17729
17730three_bytes_emit_remainder_encodeSnappyBetterBlockAsm8B:
17731 MOVB $0xf4, (AX)
17732 MOVW DX, 1(AX)
17733 ADDQ $0x03, AX
17734 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8B
17735
17736two_bytes_emit_remainder_encodeSnappyBetterBlockAsm8B:
17737 MOVB $0xf0, (AX)
17738 MOVB DL, 1(AX)
17739 ADDQ $0x02, AX
17740 CMPL DX, $0x40
17741 JB memmove_emit_remainder_encodeSnappyBetterBlockAsm8B
17742 JMP memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8B
17743
17744one_byte_emit_remainder_encodeSnappyBetterBlockAsm8B:
17745 SHLB $0x02, DL
17746 MOVB DL, (AX)
17747 ADDQ $0x01, AX
17748
17749memmove_emit_remainder_encodeSnappyBetterBlockAsm8B:
17750 LEAQ (AX)(SI*1), DX
17751 MOVL SI, BX
17752
17753 // genMemMoveShort
17754 CMPQ BX, $0x03
17755 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_1or2
17756 JE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_3
17757 CMPQ BX, $0x08
17758 JB emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_4through7
17759 CMPQ BX, $0x10
17760 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_8through16
17761 CMPQ BX, $0x20
17762 JBE emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_17through32
17763 JMP emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_33through64
17764
17765emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_1or2:
17766 MOVB (CX), SI
17767 MOVB -1(CX)(BX*1), CL
17768 MOVB SI, (AX)
17769 MOVB CL, -1(AX)(BX*1)
17770 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm8B
17771
17772emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_3:
17773 MOVW (CX), SI
17774 MOVB 2(CX), CL
17775 MOVW SI, (AX)
17776 MOVB CL, 2(AX)
17777 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm8B
17778
17779emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_4through7:
17780 MOVL (CX), SI
17781 MOVL -4(CX)(BX*1), CX
17782 MOVL SI, (AX)
17783 MOVL CX, -4(AX)(BX*1)
17784 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm8B
17785
17786emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_8through16:
17787 MOVQ (CX), SI
17788 MOVQ -8(CX)(BX*1), CX
17789 MOVQ SI, (AX)
17790 MOVQ CX, -8(AX)(BX*1)
17791 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm8B
17792
17793emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_17through32:
17794 MOVOU (CX), X0
17795 MOVOU -16(CX)(BX*1), X1
17796 MOVOU X0, (AX)
17797 MOVOU X1, -16(AX)(BX*1)
17798 JMP memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm8B
17799
17800emit_lit_memmove_emit_remainder_encodeSnappyBetterBlockAsm8B_memmove_move_33through64:
17801 MOVOU (CX), X0
17802 MOVOU 16(CX), X1
17803 MOVOU -32(CX)(BX*1), X2
17804 MOVOU -16(CX)(BX*1), X3
17805 MOVOU X0, (AX)
17806 MOVOU X1, 16(AX)
17807 MOVOU X2, -32(AX)(BX*1)
17808 MOVOU X3, -16(AX)(BX*1)
17809
17810memmove_end_copy_emit_remainder_encodeSnappyBetterBlockAsm8B:
17811 MOVQ DX, AX
17812 JMP emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm8B
17813
17814memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8B:
17815 LEAQ (AX)(SI*1), DX
17816 MOVL SI, BX
17817
17818 // genMemMoveLong
17819 MOVOU (CX), X0
17820 MOVOU 16(CX), X1
17821 MOVOU -32(CX)(BX*1), X2
17822 MOVOU -16(CX)(BX*1), X3
17823 MOVQ BX, DI
17824 SHRQ $0x05, DI
17825 MOVQ AX, SI
17826 ANDL $0x0000001f, SI
17827 MOVQ $0x00000040, R8
17828 SUBQ SI, R8
17829 DECQ DI
17830 JA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8Blarge_forward_sse_loop_32
17831 LEAQ -32(CX)(R8*1), SI
17832 LEAQ -32(AX)(R8*1), R9
17833
17834emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8Blarge_big_loop_back:
17835 MOVOU (SI), X4
17836 MOVOU 16(SI), X5
17837 MOVOA X4, (R9)
17838 MOVOA X5, 16(R9)
17839 ADDQ $0x20, R9
17840 ADDQ $0x20, SI
17841 ADDQ $0x20, R8
17842 DECQ DI
17843 JNA emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8Blarge_big_loop_back
17844
17845emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8Blarge_forward_sse_loop_32:
17846 MOVOU -32(CX)(R8*1), X4
17847 MOVOU -16(CX)(R8*1), X5
17848 MOVOA X4, -32(AX)(R8*1)
17849 MOVOA X5, -16(AX)(R8*1)
17850 ADDQ $0x20, R8
17851 CMPQ BX, R8
17852 JAE emit_lit_memmove_long_emit_remainder_encodeSnappyBetterBlockAsm8Blarge_forward_sse_loop_32
17853 MOVOU X0, (AX)
17854 MOVOU X1, 16(AX)
17855 MOVOU X2, -32(AX)(BX*1)
17856 MOVOU X3, -16(AX)(BX*1)
17857 MOVQ DX, AX
17858
17859emit_literal_done_emit_remainder_encodeSnappyBetterBlockAsm8B:
17860 MOVQ dst_base+0(FP), CX
17861 SUBQ CX, AX
17862 MOVQ AX, ret+48(FP)
17863 RET
17864
17865// func calcBlockSize(src []byte) int
17866// Requires: BMI, SSE2
17867TEXT ·calcBlockSize(SB), $32792-32
17868 XORQ AX, AX
17869 MOVQ $0x00000100, CX
17870 LEAQ 24(SP), DX
17871 PXOR X0, X0
17872
17873zero_loop_calcBlockSize:
17874 MOVOU X0, (DX)
17875 MOVOU X0, 16(DX)
17876 MOVOU X0, 32(DX)
17877 MOVOU X0, 48(DX)
17878 MOVOU X0, 64(DX)
17879 MOVOU X0, 80(DX)
17880 MOVOU X0, 96(DX)
17881 MOVOU X0, 112(DX)
17882 ADDQ $0x80, DX
17883 DECQ CX
17884 JNZ zero_loop_calcBlockSize
17885 MOVL $0x00000000, 12(SP)
17886 MOVQ src_len+8(FP), CX
17887 LEAQ -9(CX), DX
17888 LEAQ -8(CX), BX
17889 MOVL BX, 8(SP)
17890 SHRQ $0x05, CX
17891 SUBL CX, DX
17892 LEAQ (AX)(DX*1), DX
17893 MOVQ DX, (SP)
17894 MOVL $0x00000001, CX
17895 MOVL CX, 16(SP)
17896 MOVQ src_base+0(FP), DX
17897
17898search_loop_calcBlockSize:
17899 MOVL CX, BX
17900 SUBL 12(SP), BX
17901 SHRL $0x05, BX
17902 LEAL 4(CX)(BX*1), BX
17903 CMPL BX, 8(SP)
17904 JAE emit_remainder_calcBlockSize
17905 MOVQ (DX)(CX*1), SI
17906 MOVL BX, 20(SP)
17907 MOVQ $0x0000cf1bbcdcbf9b, R8
17908 MOVQ SI, R9
17909 MOVQ SI, R10
17910 SHRQ $0x08, R10
17911 SHLQ $0x10, R9
17912 IMULQ R8, R9
17913 SHRQ $0x33, R9
17914 SHLQ $0x10, R10
17915 IMULQ R8, R10
17916 SHRQ $0x33, R10
17917 MOVL 24(SP)(R9*4), BX
17918 MOVL 24(SP)(R10*4), DI
17919 MOVL CX, 24(SP)(R9*4)
17920 LEAL 1(CX), R9
17921 MOVL R9, 24(SP)(R10*4)
17922 MOVQ SI, R9
17923 SHRQ $0x10, R9
17924 SHLQ $0x10, R9
17925 IMULQ R8, R9
17926 SHRQ $0x33, R9
17927 MOVL CX, R8
17928 SUBL 16(SP), R8
17929 MOVL 1(DX)(R8*1), R10
17930 MOVQ SI, R8
17931 SHRQ $0x08, R8
17932 CMPL R8, R10
17933 JNE no_repeat_found_calcBlockSize
17934 LEAL 1(CX), SI
17935 MOVL 12(SP), BX
17936 MOVL SI, DI
17937 SUBL 16(SP), DI
17938 JZ repeat_extend_back_end_calcBlockSize
17939
17940repeat_extend_back_loop_calcBlockSize:
17941 CMPL SI, BX
17942 JBE repeat_extend_back_end_calcBlockSize
17943 MOVB -1(DX)(DI*1), R8
17944 MOVB -1(DX)(SI*1), R9
17945 CMPB R8, R9
17946 JNE repeat_extend_back_end_calcBlockSize
17947 LEAL -1(SI), SI
17948 DECL DI
17949 JNZ repeat_extend_back_loop_calcBlockSize
17950
17951repeat_extend_back_end_calcBlockSize:
17952 MOVL 12(SP), BX
17953 CMPL BX, SI
17954 JEQ emit_literal_done_repeat_emit_calcBlockSize
17955 MOVL SI, DI
17956 MOVL SI, 12(SP)
17957 LEAQ (DX)(BX*1), R8
17958 SUBL BX, DI
17959 LEAL -1(DI), BX
17960 CMPL BX, $0x3c
17961 JB one_byte_repeat_emit_calcBlockSize
17962 CMPL BX, $0x00000100
17963 JB two_bytes_repeat_emit_calcBlockSize
17964 CMPL BX, $0x00010000
17965 JB three_bytes_repeat_emit_calcBlockSize
17966 CMPL BX, $0x01000000
17967 JB four_bytes_repeat_emit_calcBlockSize
17968 ADDQ $0x05, AX
17969 JMP memmove_long_repeat_emit_calcBlockSize
17970
17971four_bytes_repeat_emit_calcBlockSize:
17972 ADDQ $0x04, AX
17973 JMP memmove_long_repeat_emit_calcBlockSize
17974
17975three_bytes_repeat_emit_calcBlockSize:
17976 ADDQ $0x03, AX
17977 JMP memmove_long_repeat_emit_calcBlockSize
17978
17979two_bytes_repeat_emit_calcBlockSize:
17980 ADDQ $0x02, AX
17981 CMPL BX, $0x40
17982 JB memmove_repeat_emit_calcBlockSize
17983 JMP memmove_long_repeat_emit_calcBlockSize
17984
17985one_byte_repeat_emit_calcBlockSize:
17986 ADDQ $0x01, AX
17987
17988memmove_repeat_emit_calcBlockSize:
17989 LEAQ (AX)(DI*1), AX
17990 JMP emit_literal_done_repeat_emit_calcBlockSize
17991
17992memmove_long_repeat_emit_calcBlockSize:
17993 LEAQ (AX)(DI*1), AX
17994
17995emit_literal_done_repeat_emit_calcBlockSize:
17996 ADDL $0x05, CX
17997 MOVL CX, BX
17998 SUBL 16(SP), BX
17999 MOVQ src_len+8(FP), DI
18000 SUBL CX, DI
18001 LEAQ (DX)(CX*1), R8
18002 LEAQ (DX)(BX*1), BX
18003
18004 // matchLen
18005 XORL R10, R10
18006
18007matchlen_loopback_16_repeat_extend_calcBlockSize:
18008 CMPL DI, $0x10
18009 JB matchlen_match8_repeat_extend_calcBlockSize
18010 MOVQ (R8)(R10*1), R9
18011 MOVQ 8(R8)(R10*1), R11
18012 XORQ (BX)(R10*1), R9
18013 JNZ matchlen_bsf_8_repeat_extend_calcBlockSize
18014 XORQ 8(BX)(R10*1), R11
18015 JNZ matchlen_bsf_16repeat_extend_calcBlockSize
18016 LEAL -16(DI), DI
18017 LEAL 16(R10), R10
18018 JMP matchlen_loopback_16_repeat_extend_calcBlockSize
18019
18020matchlen_bsf_16repeat_extend_calcBlockSize:
18021#ifdef GOAMD64_v3
18022 TZCNTQ R11, R11
18023
18024#else
18025 BSFQ R11, R11
18026
18027#endif
18028 SARQ $0x03, R11
18029 LEAL 8(R10)(R11*1), R10
18030 JMP repeat_extend_forward_end_calcBlockSize
18031
18032matchlen_match8_repeat_extend_calcBlockSize:
18033 CMPL DI, $0x08
18034 JB matchlen_match4_repeat_extend_calcBlockSize
18035 MOVQ (R8)(R10*1), R9
18036 XORQ (BX)(R10*1), R9
18037 JNZ matchlen_bsf_8_repeat_extend_calcBlockSize
18038 LEAL -8(DI), DI
18039 LEAL 8(R10), R10
18040 JMP matchlen_match4_repeat_extend_calcBlockSize
18041
18042matchlen_bsf_8_repeat_extend_calcBlockSize:
18043#ifdef GOAMD64_v3
18044 TZCNTQ R9, R9
18045
18046#else
18047 BSFQ R9, R9
18048
18049#endif
18050 SARQ $0x03, R9
18051 LEAL (R10)(R9*1), R10
18052 JMP repeat_extend_forward_end_calcBlockSize
18053
18054matchlen_match4_repeat_extend_calcBlockSize:
18055 CMPL DI, $0x04
18056 JB matchlen_match2_repeat_extend_calcBlockSize
18057 MOVL (R8)(R10*1), R9
18058 CMPL (BX)(R10*1), R9
18059 JNE matchlen_match2_repeat_extend_calcBlockSize
18060 LEAL -4(DI), DI
18061 LEAL 4(R10), R10
18062
18063matchlen_match2_repeat_extend_calcBlockSize:
18064 CMPL DI, $0x01
18065 JE matchlen_match1_repeat_extend_calcBlockSize
18066 JB repeat_extend_forward_end_calcBlockSize
18067 MOVW (R8)(R10*1), R9
18068 CMPW (BX)(R10*1), R9
18069 JNE matchlen_match1_repeat_extend_calcBlockSize
18070 LEAL 2(R10), R10
18071 SUBL $0x02, DI
18072 JZ repeat_extend_forward_end_calcBlockSize
18073
18074matchlen_match1_repeat_extend_calcBlockSize:
18075 MOVB (R8)(R10*1), R9
18076 CMPB (BX)(R10*1), R9
18077 JNE repeat_extend_forward_end_calcBlockSize
18078 LEAL 1(R10), R10
18079
18080repeat_extend_forward_end_calcBlockSize:
18081 ADDL R10, CX
18082 MOVL CX, BX
18083 SUBL SI, BX
18084 MOVL 16(SP), SI
18085
18086 // emitCopy
18087 CMPL SI, $0x00010000
18088 JB two_byte_offset_repeat_as_copy_calcBlockSize
18089
18090four_bytes_loop_back_repeat_as_copy_calcBlockSize:
18091 CMPL BX, $0x40
18092 JBE four_bytes_remain_repeat_as_copy_calcBlockSize
18093 LEAL -64(BX), BX
18094 ADDQ $0x05, AX
18095 CMPL BX, $0x04
18096 JB four_bytes_remain_repeat_as_copy_calcBlockSize
18097 JMP four_bytes_loop_back_repeat_as_copy_calcBlockSize
18098
18099four_bytes_remain_repeat_as_copy_calcBlockSize:
18100 TESTL BX, BX
18101 JZ repeat_end_emit_calcBlockSize
18102 XORL BX, BX
18103 ADDQ $0x05, AX
18104 JMP repeat_end_emit_calcBlockSize
18105
18106two_byte_offset_repeat_as_copy_calcBlockSize:
18107 CMPL BX, $0x40
18108 JBE two_byte_offset_short_repeat_as_copy_calcBlockSize
18109 LEAL -60(BX), BX
18110 ADDQ $0x03, AX
18111 JMP two_byte_offset_repeat_as_copy_calcBlockSize
18112
18113two_byte_offset_short_repeat_as_copy_calcBlockSize:
18114 MOVL BX, DI
18115 SHLL $0x02, DI
18116 CMPL BX, $0x0c
18117 JAE emit_copy_three_repeat_as_copy_calcBlockSize
18118 CMPL SI, $0x00000800
18119 JAE emit_copy_three_repeat_as_copy_calcBlockSize
18120 ADDQ $0x02, AX
18121 JMP repeat_end_emit_calcBlockSize
18122
18123emit_copy_three_repeat_as_copy_calcBlockSize:
18124 ADDQ $0x03, AX
18125
18126repeat_end_emit_calcBlockSize:
18127 MOVL CX, 12(SP)
18128 JMP search_loop_calcBlockSize
18129
18130no_repeat_found_calcBlockSize:
18131 CMPL (DX)(BX*1), SI
18132 JEQ candidate_match_calcBlockSize
18133 SHRQ $0x08, SI
18134 MOVL 24(SP)(R9*4), BX
18135 LEAL 2(CX), R8
18136 CMPL (DX)(DI*1), SI
18137 JEQ candidate2_match_calcBlockSize
18138 MOVL R8, 24(SP)(R9*4)
18139 SHRQ $0x08, SI
18140 CMPL (DX)(BX*1), SI
18141 JEQ candidate3_match_calcBlockSize
18142 MOVL 20(SP), CX
18143 JMP search_loop_calcBlockSize
18144
18145candidate3_match_calcBlockSize:
18146 ADDL $0x02, CX
18147 JMP candidate_match_calcBlockSize
18148
18149candidate2_match_calcBlockSize:
18150 MOVL R8, 24(SP)(R9*4)
18151 INCL CX
18152 MOVL DI, BX
18153
18154candidate_match_calcBlockSize:
18155 MOVL 12(SP), SI
18156 TESTL BX, BX
18157 JZ match_extend_back_end_calcBlockSize
18158
18159match_extend_back_loop_calcBlockSize:
18160 CMPL CX, SI
18161 JBE match_extend_back_end_calcBlockSize
18162 MOVB -1(DX)(BX*1), DI
18163 MOVB -1(DX)(CX*1), R8
18164 CMPB DI, R8
18165 JNE match_extend_back_end_calcBlockSize
18166 LEAL -1(CX), CX
18167 DECL BX
18168 JZ match_extend_back_end_calcBlockSize
18169 JMP match_extend_back_loop_calcBlockSize
18170
18171match_extend_back_end_calcBlockSize:
18172 MOVL CX, SI
18173 SUBL 12(SP), SI
18174 LEAQ 5(AX)(SI*1), SI
18175 CMPQ SI, (SP)
18176 JB match_dst_size_check_calcBlockSize
18177 MOVQ $0x00000000, ret+24(FP)
18178 RET
18179
18180match_dst_size_check_calcBlockSize:
18181 MOVL CX, SI
18182 MOVL 12(SP), DI
18183 CMPL DI, SI
18184 JEQ emit_literal_done_match_emit_calcBlockSize
18185 MOVL SI, R8
18186 MOVL SI, 12(SP)
18187 LEAQ (DX)(DI*1), SI
18188 SUBL DI, R8
18189 LEAL -1(R8), SI
18190 CMPL SI, $0x3c
18191 JB one_byte_match_emit_calcBlockSize
18192 CMPL SI, $0x00000100
18193 JB two_bytes_match_emit_calcBlockSize
18194 CMPL SI, $0x00010000
18195 JB three_bytes_match_emit_calcBlockSize
18196 CMPL SI, $0x01000000
18197 JB four_bytes_match_emit_calcBlockSize
18198 ADDQ $0x05, AX
18199 JMP memmove_long_match_emit_calcBlockSize
18200
18201four_bytes_match_emit_calcBlockSize:
18202 ADDQ $0x04, AX
18203 JMP memmove_long_match_emit_calcBlockSize
18204
18205three_bytes_match_emit_calcBlockSize:
18206 ADDQ $0x03, AX
18207 JMP memmove_long_match_emit_calcBlockSize
18208
18209two_bytes_match_emit_calcBlockSize:
18210 ADDQ $0x02, AX
18211 CMPL SI, $0x40
18212 JB memmove_match_emit_calcBlockSize
18213 JMP memmove_long_match_emit_calcBlockSize
18214
18215one_byte_match_emit_calcBlockSize:
18216 ADDQ $0x01, AX
18217
18218memmove_match_emit_calcBlockSize:
18219 LEAQ (AX)(R8*1), AX
18220 JMP emit_literal_done_match_emit_calcBlockSize
18221
18222memmove_long_match_emit_calcBlockSize:
18223 LEAQ (AX)(R8*1), AX
18224
18225emit_literal_done_match_emit_calcBlockSize:
18226match_nolit_loop_calcBlockSize:
18227 MOVL CX, SI
18228 SUBL BX, SI
18229 MOVL SI, 16(SP)
18230 ADDL $0x04, CX
18231 ADDL $0x04, BX
18232 MOVQ src_len+8(FP), SI
18233 SUBL CX, SI
18234 LEAQ (DX)(CX*1), DI
18235 LEAQ (DX)(BX*1), BX
18236
18237 // matchLen
18238 XORL R9, R9
18239
18240matchlen_loopback_16_match_nolit_calcBlockSize:
18241 CMPL SI, $0x10
18242 JB matchlen_match8_match_nolit_calcBlockSize
18243 MOVQ (DI)(R9*1), R8
18244 MOVQ 8(DI)(R9*1), R10
18245 XORQ (BX)(R9*1), R8
18246 JNZ matchlen_bsf_8_match_nolit_calcBlockSize
18247 XORQ 8(BX)(R9*1), R10
18248 JNZ matchlen_bsf_16match_nolit_calcBlockSize
18249 LEAL -16(SI), SI
18250 LEAL 16(R9), R9
18251 JMP matchlen_loopback_16_match_nolit_calcBlockSize
18252
18253matchlen_bsf_16match_nolit_calcBlockSize:
18254#ifdef GOAMD64_v3
18255 TZCNTQ R10, R10
18256
18257#else
18258 BSFQ R10, R10
18259
18260#endif
18261 SARQ $0x03, R10
18262 LEAL 8(R9)(R10*1), R9
18263 JMP match_nolit_end_calcBlockSize
18264
18265matchlen_match8_match_nolit_calcBlockSize:
18266 CMPL SI, $0x08
18267 JB matchlen_match4_match_nolit_calcBlockSize
18268 MOVQ (DI)(R9*1), R8
18269 XORQ (BX)(R9*1), R8
18270 JNZ matchlen_bsf_8_match_nolit_calcBlockSize
18271 LEAL -8(SI), SI
18272 LEAL 8(R9), R9
18273 JMP matchlen_match4_match_nolit_calcBlockSize
18274
18275matchlen_bsf_8_match_nolit_calcBlockSize:
18276#ifdef GOAMD64_v3
18277 TZCNTQ R8, R8
18278
18279#else
18280 BSFQ R8, R8
18281
18282#endif
18283 SARQ $0x03, R8
18284 LEAL (R9)(R8*1), R9
18285 JMP match_nolit_end_calcBlockSize
18286
18287matchlen_match4_match_nolit_calcBlockSize:
18288 CMPL SI, $0x04
18289 JB matchlen_match2_match_nolit_calcBlockSize
18290 MOVL (DI)(R9*1), R8
18291 CMPL (BX)(R9*1), R8
18292 JNE matchlen_match2_match_nolit_calcBlockSize
18293 LEAL -4(SI), SI
18294 LEAL 4(R9), R9
18295
18296matchlen_match2_match_nolit_calcBlockSize:
18297 CMPL SI, $0x01
18298 JE matchlen_match1_match_nolit_calcBlockSize
18299 JB match_nolit_end_calcBlockSize
18300 MOVW (DI)(R9*1), R8
18301 CMPW (BX)(R9*1), R8
18302 JNE matchlen_match1_match_nolit_calcBlockSize
18303 LEAL 2(R9), R9
18304 SUBL $0x02, SI
18305 JZ match_nolit_end_calcBlockSize
18306
18307matchlen_match1_match_nolit_calcBlockSize:
18308 MOVB (DI)(R9*1), R8
18309 CMPB (BX)(R9*1), R8
18310 JNE match_nolit_end_calcBlockSize
18311 LEAL 1(R9), R9
18312
18313match_nolit_end_calcBlockSize:
18314 ADDL R9, CX
18315 MOVL 16(SP), BX
18316 ADDL $0x04, R9
18317 MOVL CX, 12(SP)
18318
18319 // emitCopy
18320 CMPL BX, $0x00010000
18321 JB two_byte_offset_match_nolit_calcBlockSize
18322
18323four_bytes_loop_back_match_nolit_calcBlockSize:
18324 CMPL R9, $0x40
18325 JBE four_bytes_remain_match_nolit_calcBlockSize
18326 LEAL -64(R9), R9
18327 ADDQ $0x05, AX
18328 CMPL R9, $0x04
18329 JB four_bytes_remain_match_nolit_calcBlockSize
18330 JMP four_bytes_loop_back_match_nolit_calcBlockSize
18331
18332four_bytes_remain_match_nolit_calcBlockSize:
18333 TESTL R9, R9
18334 JZ match_nolit_emitcopy_end_calcBlockSize
18335 XORL BX, BX
18336 ADDQ $0x05, AX
18337 JMP match_nolit_emitcopy_end_calcBlockSize
18338
18339two_byte_offset_match_nolit_calcBlockSize:
18340 CMPL R9, $0x40
18341 JBE two_byte_offset_short_match_nolit_calcBlockSize
18342 LEAL -60(R9), R9
18343 ADDQ $0x03, AX
18344 JMP two_byte_offset_match_nolit_calcBlockSize
18345
18346two_byte_offset_short_match_nolit_calcBlockSize:
18347 MOVL R9, SI
18348 SHLL $0x02, SI
18349 CMPL R9, $0x0c
18350 JAE emit_copy_three_match_nolit_calcBlockSize
18351 CMPL BX, $0x00000800
18352 JAE emit_copy_three_match_nolit_calcBlockSize
18353 ADDQ $0x02, AX
18354 JMP match_nolit_emitcopy_end_calcBlockSize
18355
18356emit_copy_three_match_nolit_calcBlockSize:
18357 ADDQ $0x03, AX
18358
18359match_nolit_emitcopy_end_calcBlockSize:
18360 CMPL CX, 8(SP)
18361 JAE emit_remainder_calcBlockSize
18362 MOVQ -2(DX)(CX*1), SI
18363 CMPQ AX, (SP)
18364 JB match_nolit_dst_ok_calcBlockSize
18365 MOVQ $0x00000000, ret+24(FP)
18366 RET
18367
18368match_nolit_dst_ok_calcBlockSize:
18369 MOVQ $0x0000cf1bbcdcbf9b, R8
18370 MOVQ SI, DI
18371 SHRQ $0x10, SI
18372 MOVQ SI, BX
18373 SHLQ $0x10, DI
18374 IMULQ R8, DI
18375 SHRQ $0x33, DI
18376 SHLQ $0x10, BX
18377 IMULQ R8, BX
18378 SHRQ $0x33, BX
18379 LEAL -2(CX), R8
18380 LEAQ 24(SP)(BX*4), R9
18381 MOVL (R9), BX
18382 MOVL R8, 24(SP)(DI*4)
18383 MOVL CX, (R9)
18384 CMPL (DX)(BX*1), SI
18385 JEQ match_nolit_loop_calcBlockSize
18386 INCL CX
18387 JMP search_loop_calcBlockSize
18388
18389emit_remainder_calcBlockSize:
18390 MOVQ src_len+8(FP), CX
18391 SUBL 12(SP), CX
18392 LEAQ 5(AX)(CX*1), CX
18393 CMPQ CX, (SP)
18394 JB emit_remainder_ok_calcBlockSize
18395 MOVQ $0x00000000, ret+24(FP)
18396 RET
18397
18398emit_remainder_ok_calcBlockSize:
18399 MOVQ src_len+8(FP), CX
18400 MOVL 12(SP), BX
18401 CMPL BX, CX
18402 JEQ emit_literal_done_emit_remainder_calcBlockSize
18403 MOVL CX, SI
18404 MOVL CX, 12(SP)
18405 LEAQ (DX)(BX*1), CX
18406 SUBL BX, SI
18407 LEAL -1(SI), CX
18408 CMPL CX, $0x3c
18409 JB one_byte_emit_remainder_calcBlockSize
18410 CMPL CX, $0x00000100
18411 JB two_bytes_emit_remainder_calcBlockSize
18412 CMPL CX, $0x00010000
18413 JB three_bytes_emit_remainder_calcBlockSize
18414 CMPL CX, $0x01000000
18415 JB four_bytes_emit_remainder_calcBlockSize
18416 ADDQ $0x05, AX
18417 JMP memmove_long_emit_remainder_calcBlockSize
18418
18419four_bytes_emit_remainder_calcBlockSize:
18420 ADDQ $0x04, AX
18421 JMP memmove_long_emit_remainder_calcBlockSize
18422
18423three_bytes_emit_remainder_calcBlockSize:
18424 ADDQ $0x03, AX
18425 JMP memmove_long_emit_remainder_calcBlockSize
18426
18427two_bytes_emit_remainder_calcBlockSize:
18428 ADDQ $0x02, AX
18429 CMPL CX, $0x40
18430 JB memmove_emit_remainder_calcBlockSize
18431 JMP memmove_long_emit_remainder_calcBlockSize
18432
18433one_byte_emit_remainder_calcBlockSize:
18434 ADDQ $0x01, AX
18435
18436memmove_emit_remainder_calcBlockSize:
18437 LEAQ (AX)(SI*1), AX
18438 JMP emit_literal_done_emit_remainder_calcBlockSize
18439
18440memmove_long_emit_remainder_calcBlockSize:
18441 LEAQ (AX)(SI*1), AX
18442
18443emit_literal_done_emit_remainder_calcBlockSize:
18444 MOVQ AX, ret+24(FP)
18445 RET
18446
18447// func calcBlockSizeSmall(src []byte) int
18448// Requires: BMI, SSE2
18449TEXT ·calcBlockSizeSmall(SB), $2072-32
18450 XORQ AX, AX
18451 MOVQ $0x00000010, CX
18452 LEAQ 24(SP), DX
18453 PXOR X0, X0
18454
18455zero_loop_calcBlockSizeSmall:
18456 MOVOU X0, (DX)
18457 MOVOU X0, 16(DX)
18458 MOVOU X0, 32(DX)
18459 MOVOU X0, 48(DX)
18460 MOVOU X0, 64(DX)
18461 MOVOU X0, 80(DX)
18462 MOVOU X0, 96(DX)
18463 MOVOU X0, 112(DX)
18464 ADDQ $0x80, DX
18465 DECQ CX
18466 JNZ zero_loop_calcBlockSizeSmall
18467 MOVL $0x00000000, 12(SP)
18468 MOVQ src_len+8(FP), CX
18469 LEAQ -9(CX), DX
18470 LEAQ -8(CX), BX
18471 MOVL BX, 8(SP)
18472 SHRQ $0x05, CX
18473 SUBL CX, DX
18474 LEAQ (AX)(DX*1), DX
18475 MOVQ DX, (SP)
18476 MOVL $0x00000001, CX
18477 MOVL CX, 16(SP)
18478 MOVQ src_base+0(FP), DX
18479
18480search_loop_calcBlockSizeSmall:
18481 MOVL CX, BX
18482 SUBL 12(SP), BX
18483 SHRL $0x04, BX
18484 LEAL 4(CX)(BX*1), BX
18485 CMPL BX, 8(SP)
18486 JAE emit_remainder_calcBlockSizeSmall
18487 MOVQ (DX)(CX*1), SI
18488 MOVL BX, 20(SP)
18489 MOVQ $0x9e3779b1, R8
18490 MOVQ SI, R9
18491 MOVQ SI, R10
18492 SHRQ $0x08, R10
18493 SHLQ $0x20, R9
18494 IMULQ R8, R9
18495 SHRQ $0x37, R9
18496 SHLQ $0x20, R10
18497 IMULQ R8, R10
18498 SHRQ $0x37, R10
18499 MOVL 24(SP)(R9*4), BX
18500 MOVL 24(SP)(R10*4), DI
18501 MOVL CX, 24(SP)(R9*4)
18502 LEAL 1(CX), R9
18503 MOVL R9, 24(SP)(R10*4)
18504 MOVQ SI, R9
18505 SHRQ $0x10, R9
18506 SHLQ $0x20, R9
18507 IMULQ R8, R9
18508 SHRQ $0x37, R9
18509 MOVL CX, R8
18510 SUBL 16(SP), R8
18511 MOVL 1(DX)(R8*1), R10
18512 MOVQ SI, R8
18513 SHRQ $0x08, R8
18514 CMPL R8, R10
18515 JNE no_repeat_found_calcBlockSizeSmall
18516 LEAL 1(CX), SI
18517 MOVL 12(SP), BX
18518 MOVL SI, DI
18519 SUBL 16(SP), DI
18520 JZ repeat_extend_back_end_calcBlockSizeSmall
18521
18522repeat_extend_back_loop_calcBlockSizeSmall:
18523 CMPL SI, BX
18524 JBE repeat_extend_back_end_calcBlockSizeSmall
18525 MOVB -1(DX)(DI*1), R8
18526 MOVB -1(DX)(SI*1), R9
18527 CMPB R8, R9
18528 JNE repeat_extend_back_end_calcBlockSizeSmall
18529 LEAL -1(SI), SI
18530 DECL DI
18531 JNZ repeat_extend_back_loop_calcBlockSizeSmall
18532
18533repeat_extend_back_end_calcBlockSizeSmall:
18534 MOVL 12(SP), BX
18535 CMPL BX, SI
18536 JEQ emit_literal_done_repeat_emit_calcBlockSizeSmall
18537 MOVL SI, DI
18538 MOVL SI, 12(SP)
18539 LEAQ (DX)(BX*1), R8
18540 SUBL BX, DI
18541 LEAL -1(DI), BX
18542 CMPL BX, $0x3c
18543 JB one_byte_repeat_emit_calcBlockSizeSmall
18544 CMPL BX, $0x00000100
18545 JB two_bytes_repeat_emit_calcBlockSizeSmall
18546 JB three_bytes_repeat_emit_calcBlockSizeSmall
18547
18548three_bytes_repeat_emit_calcBlockSizeSmall:
18549 ADDQ $0x03, AX
18550 JMP memmove_long_repeat_emit_calcBlockSizeSmall
18551
18552two_bytes_repeat_emit_calcBlockSizeSmall:
18553 ADDQ $0x02, AX
18554 CMPL BX, $0x40
18555 JB memmove_repeat_emit_calcBlockSizeSmall
18556 JMP memmove_long_repeat_emit_calcBlockSizeSmall
18557
18558one_byte_repeat_emit_calcBlockSizeSmall:
18559 ADDQ $0x01, AX
18560
18561memmove_repeat_emit_calcBlockSizeSmall:
18562 LEAQ (AX)(DI*1), AX
18563 JMP emit_literal_done_repeat_emit_calcBlockSizeSmall
18564
18565memmove_long_repeat_emit_calcBlockSizeSmall:
18566 LEAQ (AX)(DI*1), AX
18567
18568emit_literal_done_repeat_emit_calcBlockSizeSmall:
18569 ADDL $0x05, CX
18570 MOVL CX, BX
18571 SUBL 16(SP), BX
18572 MOVQ src_len+8(FP), DI
18573 SUBL CX, DI
18574 LEAQ (DX)(CX*1), R8
18575 LEAQ (DX)(BX*1), BX
18576
18577 // matchLen
18578 XORL R10, R10
18579
18580matchlen_loopback_16_repeat_extend_calcBlockSizeSmall:
18581 CMPL DI, $0x10
18582 JB matchlen_match8_repeat_extend_calcBlockSizeSmall
18583 MOVQ (R8)(R10*1), R9
18584 MOVQ 8(R8)(R10*1), R11
18585 XORQ (BX)(R10*1), R9
18586 JNZ matchlen_bsf_8_repeat_extend_calcBlockSizeSmall
18587 XORQ 8(BX)(R10*1), R11
18588 JNZ matchlen_bsf_16repeat_extend_calcBlockSizeSmall
18589 LEAL -16(DI), DI
18590 LEAL 16(R10), R10
18591 JMP matchlen_loopback_16_repeat_extend_calcBlockSizeSmall
18592
18593matchlen_bsf_16repeat_extend_calcBlockSizeSmall:
18594#ifdef GOAMD64_v3
18595 TZCNTQ R11, R11
18596
18597#else
18598 BSFQ R11, R11
18599
18600#endif
18601 SARQ $0x03, R11
18602 LEAL 8(R10)(R11*1), R10
18603 JMP repeat_extend_forward_end_calcBlockSizeSmall
18604
18605matchlen_match8_repeat_extend_calcBlockSizeSmall:
18606 CMPL DI, $0x08
18607 JB matchlen_match4_repeat_extend_calcBlockSizeSmall
18608 MOVQ (R8)(R10*1), R9
18609 XORQ (BX)(R10*1), R9
18610 JNZ matchlen_bsf_8_repeat_extend_calcBlockSizeSmall
18611 LEAL -8(DI), DI
18612 LEAL 8(R10), R10
18613 JMP matchlen_match4_repeat_extend_calcBlockSizeSmall
18614
18615matchlen_bsf_8_repeat_extend_calcBlockSizeSmall:
18616#ifdef GOAMD64_v3
18617 TZCNTQ R9, R9
18618
18619#else
18620 BSFQ R9, R9
18621
18622#endif
18623 SARQ $0x03, R9
18624 LEAL (R10)(R9*1), R10
18625 JMP repeat_extend_forward_end_calcBlockSizeSmall
18626
18627matchlen_match4_repeat_extend_calcBlockSizeSmall:
18628 CMPL DI, $0x04
18629 JB matchlen_match2_repeat_extend_calcBlockSizeSmall
18630 MOVL (R8)(R10*1), R9
18631 CMPL (BX)(R10*1), R9
18632 JNE matchlen_match2_repeat_extend_calcBlockSizeSmall
18633 LEAL -4(DI), DI
18634 LEAL 4(R10), R10
18635
18636matchlen_match2_repeat_extend_calcBlockSizeSmall:
18637 CMPL DI, $0x01
18638 JE matchlen_match1_repeat_extend_calcBlockSizeSmall
18639 JB repeat_extend_forward_end_calcBlockSizeSmall
18640 MOVW (R8)(R10*1), R9
18641 CMPW (BX)(R10*1), R9
18642 JNE matchlen_match1_repeat_extend_calcBlockSizeSmall
18643 LEAL 2(R10), R10
18644 SUBL $0x02, DI
18645 JZ repeat_extend_forward_end_calcBlockSizeSmall
18646
18647matchlen_match1_repeat_extend_calcBlockSizeSmall:
18648 MOVB (R8)(R10*1), R9
18649 CMPB (BX)(R10*1), R9
18650 JNE repeat_extend_forward_end_calcBlockSizeSmall
18651 LEAL 1(R10), R10
18652
18653repeat_extend_forward_end_calcBlockSizeSmall:
18654 ADDL R10, CX
18655 MOVL CX, BX
18656 SUBL SI, BX
18657 MOVL 16(SP), SI
18658
18659 // emitCopy
18660two_byte_offset_repeat_as_copy_calcBlockSizeSmall:
18661 CMPL BX, $0x40
18662 JBE two_byte_offset_short_repeat_as_copy_calcBlockSizeSmall
18663 LEAL -60(BX), BX
18664 ADDQ $0x03, AX
18665 JMP two_byte_offset_repeat_as_copy_calcBlockSizeSmall
18666
18667two_byte_offset_short_repeat_as_copy_calcBlockSizeSmall:
18668 MOVL BX, SI
18669 SHLL $0x02, SI
18670 CMPL BX, $0x0c
18671 JAE emit_copy_three_repeat_as_copy_calcBlockSizeSmall
18672 ADDQ $0x02, AX
18673 JMP repeat_end_emit_calcBlockSizeSmall
18674
18675emit_copy_three_repeat_as_copy_calcBlockSizeSmall:
18676 ADDQ $0x03, AX
18677
18678repeat_end_emit_calcBlockSizeSmall:
18679 MOVL CX, 12(SP)
18680 JMP search_loop_calcBlockSizeSmall
18681
18682no_repeat_found_calcBlockSizeSmall:
18683 CMPL (DX)(BX*1), SI
18684 JEQ candidate_match_calcBlockSizeSmall
18685 SHRQ $0x08, SI
18686 MOVL 24(SP)(R9*4), BX
18687 LEAL 2(CX), R8
18688 CMPL (DX)(DI*1), SI
18689 JEQ candidate2_match_calcBlockSizeSmall
18690 MOVL R8, 24(SP)(R9*4)
18691 SHRQ $0x08, SI
18692 CMPL (DX)(BX*1), SI
18693 JEQ candidate3_match_calcBlockSizeSmall
18694 MOVL 20(SP), CX
18695 JMP search_loop_calcBlockSizeSmall
18696
18697candidate3_match_calcBlockSizeSmall:
18698 ADDL $0x02, CX
18699 JMP candidate_match_calcBlockSizeSmall
18700
18701candidate2_match_calcBlockSizeSmall:
18702 MOVL R8, 24(SP)(R9*4)
18703 INCL CX
18704 MOVL DI, BX
18705
18706candidate_match_calcBlockSizeSmall:
18707 MOVL 12(SP), SI
18708 TESTL BX, BX
18709 JZ match_extend_back_end_calcBlockSizeSmall
18710
18711match_extend_back_loop_calcBlockSizeSmall:
18712 CMPL CX, SI
18713 JBE match_extend_back_end_calcBlockSizeSmall
18714 MOVB -1(DX)(BX*1), DI
18715 MOVB -1(DX)(CX*1), R8
18716 CMPB DI, R8
18717 JNE match_extend_back_end_calcBlockSizeSmall
18718 LEAL -1(CX), CX
18719 DECL BX
18720 JZ match_extend_back_end_calcBlockSizeSmall
18721 JMP match_extend_back_loop_calcBlockSizeSmall
18722
18723match_extend_back_end_calcBlockSizeSmall:
18724 MOVL CX, SI
18725 SUBL 12(SP), SI
18726 LEAQ 3(AX)(SI*1), SI
18727 CMPQ SI, (SP)
18728 JB match_dst_size_check_calcBlockSizeSmall
18729 MOVQ $0x00000000, ret+24(FP)
18730 RET
18731
18732match_dst_size_check_calcBlockSizeSmall:
18733 MOVL CX, SI
18734 MOVL 12(SP), DI
18735 CMPL DI, SI
18736 JEQ emit_literal_done_match_emit_calcBlockSizeSmall
18737 MOVL SI, R8
18738 MOVL SI, 12(SP)
18739 LEAQ (DX)(DI*1), SI
18740 SUBL DI, R8
18741 LEAL -1(R8), SI
18742 CMPL SI, $0x3c
18743 JB one_byte_match_emit_calcBlockSizeSmall
18744 CMPL SI, $0x00000100
18745 JB two_bytes_match_emit_calcBlockSizeSmall
18746 JB three_bytes_match_emit_calcBlockSizeSmall
18747
18748three_bytes_match_emit_calcBlockSizeSmall:
18749 ADDQ $0x03, AX
18750 JMP memmove_long_match_emit_calcBlockSizeSmall
18751
18752two_bytes_match_emit_calcBlockSizeSmall:
18753 ADDQ $0x02, AX
18754 CMPL SI, $0x40
18755 JB memmove_match_emit_calcBlockSizeSmall
18756 JMP memmove_long_match_emit_calcBlockSizeSmall
18757
18758one_byte_match_emit_calcBlockSizeSmall:
18759 ADDQ $0x01, AX
18760
18761memmove_match_emit_calcBlockSizeSmall:
18762 LEAQ (AX)(R8*1), AX
18763 JMP emit_literal_done_match_emit_calcBlockSizeSmall
18764
18765memmove_long_match_emit_calcBlockSizeSmall:
18766 LEAQ (AX)(R8*1), AX
18767
18768emit_literal_done_match_emit_calcBlockSizeSmall:
18769match_nolit_loop_calcBlockSizeSmall:
18770 MOVL CX, SI
18771 SUBL BX, SI
18772 MOVL SI, 16(SP)
18773 ADDL $0x04, CX
18774 ADDL $0x04, BX
18775 MOVQ src_len+8(FP), SI
18776 SUBL CX, SI
18777 LEAQ (DX)(CX*1), DI
18778 LEAQ (DX)(BX*1), BX
18779
18780 // matchLen
18781 XORL R9, R9
18782
18783matchlen_loopback_16_match_nolit_calcBlockSizeSmall:
18784 CMPL SI, $0x10
18785 JB matchlen_match8_match_nolit_calcBlockSizeSmall
18786 MOVQ (DI)(R9*1), R8
18787 MOVQ 8(DI)(R9*1), R10
18788 XORQ (BX)(R9*1), R8
18789 JNZ matchlen_bsf_8_match_nolit_calcBlockSizeSmall
18790 XORQ 8(BX)(R9*1), R10
18791 JNZ matchlen_bsf_16match_nolit_calcBlockSizeSmall
18792 LEAL -16(SI), SI
18793 LEAL 16(R9), R9
18794 JMP matchlen_loopback_16_match_nolit_calcBlockSizeSmall
18795
18796matchlen_bsf_16match_nolit_calcBlockSizeSmall:
18797#ifdef GOAMD64_v3
18798 TZCNTQ R10, R10
18799
18800#else
18801 BSFQ R10, R10
18802
18803#endif
18804 SARQ $0x03, R10
18805 LEAL 8(R9)(R10*1), R9
18806 JMP match_nolit_end_calcBlockSizeSmall
18807
18808matchlen_match8_match_nolit_calcBlockSizeSmall:
18809 CMPL SI, $0x08
18810 JB matchlen_match4_match_nolit_calcBlockSizeSmall
18811 MOVQ (DI)(R9*1), R8
18812 XORQ (BX)(R9*1), R8
18813 JNZ matchlen_bsf_8_match_nolit_calcBlockSizeSmall
18814 LEAL -8(SI), SI
18815 LEAL 8(R9), R9
18816 JMP matchlen_match4_match_nolit_calcBlockSizeSmall
18817
18818matchlen_bsf_8_match_nolit_calcBlockSizeSmall:
18819#ifdef GOAMD64_v3
18820 TZCNTQ R8, R8
18821
18822#else
18823 BSFQ R8, R8
18824
18825#endif
18826 SARQ $0x03, R8
18827 LEAL (R9)(R8*1), R9
18828 JMP match_nolit_end_calcBlockSizeSmall
18829
18830matchlen_match4_match_nolit_calcBlockSizeSmall:
18831 CMPL SI, $0x04
18832 JB matchlen_match2_match_nolit_calcBlockSizeSmall
18833 MOVL (DI)(R9*1), R8
18834 CMPL (BX)(R9*1), R8
18835 JNE matchlen_match2_match_nolit_calcBlockSizeSmall
18836 LEAL -4(SI), SI
18837 LEAL 4(R9), R9
18838
18839matchlen_match2_match_nolit_calcBlockSizeSmall:
18840 CMPL SI, $0x01
18841 JE matchlen_match1_match_nolit_calcBlockSizeSmall
18842 JB match_nolit_end_calcBlockSizeSmall
18843 MOVW (DI)(R9*1), R8
18844 CMPW (BX)(R9*1), R8
18845 JNE matchlen_match1_match_nolit_calcBlockSizeSmall
18846 LEAL 2(R9), R9
18847 SUBL $0x02, SI
18848 JZ match_nolit_end_calcBlockSizeSmall
18849
18850matchlen_match1_match_nolit_calcBlockSizeSmall:
18851 MOVB (DI)(R9*1), R8
18852 CMPB (BX)(R9*1), R8
18853 JNE match_nolit_end_calcBlockSizeSmall
18854 LEAL 1(R9), R9
18855
18856match_nolit_end_calcBlockSizeSmall:
18857 ADDL R9, CX
18858 MOVL 16(SP), BX
18859 ADDL $0x04, R9
18860 MOVL CX, 12(SP)
18861
18862 // emitCopy
18863two_byte_offset_match_nolit_calcBlockSizeSmall:
18864 CMPL R9, $0x40
18865 JBE two_byte_offset_short_match_nolit_calcBlockSizeSmall
18866 LEAL -60(R9), R9
18867 ADDQ $0x03, AX
18868 JMP two_byte_offset_match_nolit_calcBlockSizeSmall
18869
18870two_byte_offset_short_match_nolit_calcBlockSizeSmall:
18871 MOVL R9, BX
18872 SHLL $0x02, BX
18873 CMPL R9, $0x0c
18874 JAE emit_copy_three_match_nolit_calcBlockSizeSmall
18875 ADDQ $0x02, AX
18876 JMP match_nolit_emitcopy_end_calcBlockSizeSmall
18877
18878emit_copy_three_match_nolit_calcBlockSizeSmall:
18879 ADDQ $0x03, AX
18880
18881match_nolit_emitcopy_end_calcBlockSizeSmall:
18882 CMPL CX, 8(SP)
18883 JAE emit_remainder_calcBlockSizeSmall
18884 MOVQ -2(DX)(CX*1), SI
18885 CMPQ AX, (SP)
18886 JB match_nolit_dst_ok_calcBlockSizeSmall
18887 MOVQ $0x00000000, ret+24(FP)
18888 RET
18889
18890match_nolit_dst_ok_calcBlockSizeSmall:
18891 MOVQ $0x9e3779b1, R8
18892 MOVQ SI, DI
18893 SHRQ $0x10, SI
18894 MOVQ SI, BX
18895 SHLQ $0x20, DI
18896 IMULQ R8, DI
18897 SHRQ $0x37, DI
18898 SHLQ $0x20, BX
18899 IMULQ R8, BX
18900 SHRQ $0x37, BX
18901 LEAL -2(CX), R8
18902 LEAQ 24(SP)(BX*4), R9
18903 MOVL (R9), BX
18904 MOVL R8, 24(SP)(DI*4)
18905 MOVL CX, (R9)
18906 CMPL (DX)(BX*1), SI
18907 JEQ match_nolit_loop_calcBlockSizeSmall
18908 INCL CX
18909 JMP search_loop_calcBlockSizeSmall
18910
18911emit_remainder_calcBlockSizeSmall:
18912 MOVQ src_len+8(FP), CX
18913 SUBL 12(SP), CX
18914 LEAQ 3(AX)(CX*1), CX
18915 CMPQ CX, (SP)
18916 JB emit_remainder_ok_calcBlockSizeSmall
18917 MOVQ $0x00000000, ret+24(FP)
18918 RET
18919
18920emit_remainder_ok_calcBlockSizeSmall:
18921 MOVQ src_len+8(FP), CX
18922 MOVL 12(SP), BX
18923 CMPL BX, CX
18924 JEQ emit_literal_done_emit_remainder_calcBlockSizeSmall
18925 MOVL CX, SI
18926 MOVL CX, 12(SP)
18927 LEAQ (DX)(BX*1), CX
18928 SUBL BX, SI
18929 LEAL -1(SI), CX
18930 CMPL CX, $0x3c
18931 JB one_byte_emit_remainder_calcBlockSizeSmall
18932 CMPL CX, $0x00000100
18933 JB two_bytes_emit_remainder_calcBlockSizeSmall
18934 JB three_bytes_emit_remainder_calcBlockSizeSmall
18935
18936three_bytes_emit_remainder_calcBlockSizeSmall:
18937 ADDQ $0x03, AX
18938 JMP memmove_long_emit_remainder_calcBlockSizeSmall
18939
18940two_bytes_emit_remainder_calcBlockSizeSmall:
18941 ADDQ $0x02, AX
18942 CMPL CX, $0x40
18943 JB memmove_emit_remainder_calcBlockSizeSmall
18944 JMP memmove_long_emit_remainder_calcBlockSizeSmall
18945
18946one_byte_emit_remainder_calcBlockSizeSmall:
18947 ADDQ $0x01, AX
18948
18949memmove_emit_remainder_calcBlockSizeSmall:
18950 LEAQ (AX)(SI*1), AX
18951 JMP emit_literal_done_emit_remainder_calcBlockSizeSmall
18952
18953memmove_long_emit_remainder_calcBlockSizeSmall:
18954 LEAQ (AX)(SI*1), AX
18955
18956emit_literal_done_emit_remainder_calcBlockSizeSmall:
18957 MOVQ AX, ret+24(FP)
18958 RET
18959
18960// func emitLiteral(dst []byte, lit []byte) int
18961// Requires: SSE2
18962TEXT ·emitLiteral(SB), NOSPLIT, $0-56
18963 MOVQ lit_len+32(FP), DX
18964 MOVQ dst_base+0(FP), AX
18965 MOVQ lit_base+24(FP), CX
18966 TESTQ DX, DX
18967 JZ emit_literal_end_standalone_skip
18968 MOVL DX, BX
18969 LEAL -1(DX), SI
18970 CMPL SI, $0x3c
18971 JB one_byte_standalone
18972 CMPL SI, $0x00000100
18973 JB two_bytes_standalone
18974 CMPL SI, $0x00010000
18975 JB three_bytes_standalone
18976 CMPL SI, $0x01000000
18977 JB four_bytes_standalone
18978 MOVB $0xfc, (AX)
18979 MOVL SI, 1(AX)
18980 ADDQ $0x05, BX
18981 ADDQ $0x05, AX
18982 JMP memmove_long_standalone
18983
18984four_bytes_standalone:
18985 MOVL SI, DI
18986 SHRL $0x10, DI
18987 MOVB $0xf8, (AX)
18988 MOVW SI, 1(AX)
18989 MOVB DI, 3(AX)
18990 ADDQ $0x04, BX
18991 ADDQ $0x04, AX
18992 JMP memmove_long_standalone
18993
18994three_bytes_standalone:
18995 MOVB $0xf4, (AX)
18996 MOVW SI, 1(AX)
18997 ADDQ $0x03, BX
18998 ADDQ $0x03, AX
18999 JMP memmove_long_standalone
19000
19001two_bytes_standalone:
19002 MOVB $0xf0, (AX)
19003 MOVB SI, 1(AX)
19004 ADDQ $0x02, BX
19005 ADDQ $0x02, AX
19006 CMPL SI, $0x40
19007 JB memmove_standalone
19008 JMP memmove_long_standalone
19009
19010one_byte_standalone:
19011 SHLB $0x02, SI
19012 MOVB SI, (AX)
19013 ADDQ $0x01, BX
19014 ADDQ $0x01, AX
19015
19016memmove_standalone:
19017 // genMemMoveShort
19018 CMPQ DX, $0x03
19019 JB emit_lit_memmove_standalone_memmove_move_1or2
19020 JE emit_lit_memmove_standalone_memmove_move_3
19021 CMPQ DX, $0x08
19022 JB emit_lit_memmove_standalone_memmove_move_4through7
19023 CMPQ DX, $0x10
19024 JBE emit_lit_memmove_standalone_memmove_move_8through16
19025 CMPQ DX, $0x20
19026 JBE emit_lit_memmove_standalone_memmove_move_17through32
19027 JMP emit_lit_memmove_standalone_memmove_move_33through64
19028
19029emit_lit_memmove_standalone_memmove_move_1or2:
19030 MOVB (CX), SI
19031 MOVB -1(CX)(DX*1), CL
19032 MOVB SI, (AX)
19033 MOVB CL, -1(AX)(DX*1)
19034 JMP emit_literal_end_standalone
19035
19036emit_lit_memmove_standalone_memmove_move_3:
19037 MOVW (CX), SI
19038 MOVB 2(CX), CL
19039 MOVW SI, (AX)
19040 MOVB CL, 2(AX)
19041 JMP emit_literal_end_standalone
19042
19043emit_lit_memmove_standalone_memmove_move_4through7:
19044 MOVL (CX), SI
19045 MOVL -4(CX)(DX*1), CX
19046 MOVL SI, (AX)
19047 MOVL CX, -4(AX)(DX*1)
19048 JMP emit_literal_end_standalone
19049
19050emit_lit_memmove_standalone_memmove_move_8through16:
19051 MOVQ (CX), SI
19052 MOVQ -8(CX)(DX*1), CX
19053 MOVQ SI, (AX)
19054 MOVQ CX, -8(AX)(DX*1)
19055 JMP emit_literal_end_standalone
19056
19057emit_lit_memmove_standalone_memmove_move_17through32:
19058 MOVOU (CX), X0
19059 MOVOU -16(CX)(DX*1), X1
19060 MOVOU X0, (AX)
19061 MOVOU X1, -16(AX)(DX*1)
19062 JMP emit_literal_end_standalone
19063
19064emit_lit_memmove_standalone_memmove_move_33through64:
19065 MOVOU (CX), X0
19066 MOVOU 16(CX), X1
19067 MOVOU -32(CX)(DX*1), X2
19068 MOVOU -16(CX)(DX*1), X3
19069 MOVOU X0, (AX)
19070 MOVOU X1, 16(AX)
19071 MOVOU X2, -32(AX)(DX*1)
19072 MOVOU X3, -16(AX)(DX*1)
19073 JMP emit_literal_end_standalone
19074 JMP emit_literal_end_standalone
19075
19076memmove_long_standalone:
19077 // genMemMoveLong
19078 MOVOU (CX), X0
19079 MOVOU 16(CX), X1
19080 MOVOU -32(CX)(DX*1), X2
19081 MOVOU -16(CX)(DX*1), X3
19082 MOVQ DX, DI
19083 SHRQ $0x05, DI
19084 MOVQ AX, SI
19085 ANDL $0x0000001f, SI
19086 MOVQ $0x00000040, R8
19087 SUBQ SI, R8
19088 DECQ DI
19089 JA emit_lit_memmove_long_standalonelarge_forward_sse_loop_32
19090 LEAQ -32(CX)(R8*1), SI
19091 LEAQ -32(AX)(R8*1), R9
19092
19093emit_lit_memmove_long_standalonelarge_big_loop_back:
19094 MOVOU (SI), X4
19095 MOVOU 16(SI), X5
19096 MOVOA X4, (R9)
19097 MOVOA X5, 16(R9)
19098 ADDQ $0x20, R9
19099 ADDQ $0x20, SI
19100 ADDQ $0x20, R8
19101 DECQ DI
19102 JNA emit_lit_memmove_long_standalonelarge_big_loop_back
19103
19104emit_lit_memmove_long_standalonelarge_forward_sse_loop_32:
19105 MOVOU -32(CX)(R8*1), X4
19106 MOVOU -16(CX)(R8*1), X5
19107 MOVOA X4, -32(AX)(R8*1)
19108 MOVOA X5, -16(AX)(R8*1)
19109 ADDQ $0x20, R8
19110 CMPQ DX, R8
19111 JAE emit_lit_memmove_long_standalonelarge_forward_sse_loop_32
19112 MOVOU X0, (AX)
19113 MOVOU X1, 16(AX)
19114 MOVOU X2, -32(AX)(DX*1)
19115 MOVOU X3, -16(AX)(DX*1)
19116 JMP emit_literal_end_standalone
19117 JMP emit_literal_end_standalone
19118
19119emit_literal_end_standalone_skip:
19120 XORQ BX, BX
19121
19122emit_literal_end_standalone:
19123 MOVQ BX, ret+48(FP)
19124 RET
19125
19126// func emitRepeat(dst []byte, offset int, length int) int
19127TEXT ·emitRepeat(SB), NOSPLIT, $0-48
19128 XORQ BX, BX
19129 MOVQ dst_base+0(FP), AX
19130 MOVQ offset+24(FP), CX
19131 MOVQ length+32(FP), DX
19132
19133 // emitRepeat
19134emit_repeat_again_standalone:
19135 MOVL DX, SI
19136 LEAL -4(DX), DX
19137 CMPL SI, $0x08
19138 JBE repeat_two_standalone
19139 CMPL SI, $0x0c
19140 JAE cant_repeat_two_offset_standalone
19141 CMPL CX, $0x00000800
19142 JB repeat_two_offset_standalone
19143
19144cant_repeat_two_offset_standalone:
19145 CMPL DX, $0x00000104
19146 JB repeat_three_standalone
19147 CMPL DX, $0x00010100
19148 JB repeat_four_standalone
19149 CMPL DX, $0x0100ffff
19150 JB repeat_five_standalone
19151 LEAL -16842747(DX), DX
19152 MOVL $0xfffb001d, (AX)
19153 MOVB $0xff, 4(AX)
19154 ADDQ $0x05, AX
19155 ADDQ $0x05, BX
19156 JMP emit_repeat_again_standalone
19157
19158repeat_five_standalone:
19159 LEAL -65536(DX), DX
19160 MOVL DX, CX
19161 MOVW $0x001d, (AX)
19162 MOVW DX, 2(AX)
19163 SARL $0x10, CX
19164 MOVB CL, 4(AX)
19165 ADDQ $0x05, BX
19166 ADDQ $0x05, AX
19167 JMP gen_emit_repeat_end
19168
19169repeat_four_standalone:
19170 LEAL -256(DX), DX
19171 MOVW $0x0019, (AX)
19172 MOVW DX, 2(AX)
19173 ADDQ $0x04, BX
19174 ADDQ $0x04, AX
19175 JMP gen_emit_repeat_end
19176
19177repeat_three_standalone:
19178 LEAL -4(DX), DX
19179 MOVW $0x0015, (AX)
19180 MOVB DL, 2(AX)
19181 ADDQ $0x03, BX
19182 ADDQ $0x03, AX
19183 JMP gen_emit_repeat_end
19184
19185repeat_two_standalone:
19186 SHLL $0x02, DX
19187 ORL $0x01, DX
19188 MOVW DX, (AX)
19189 ADDQ $0x02, BX
19190 ADDQ $0x02, AX
19191 JMP gen_emit_repeat_end
19192
19193repeat_two_offset_standalone:
19194 XORQ SI, SI
19195 LEAL 1(SI)(DX*4), DX
19196 MOVB CL, 1(AX)
19197 SARL $0x08, CX
19198 SHLL $0x05, CX
19199 ORL CX, DX
19200 MOVB DL, (AX)
19201 ADDQ $0x02, BX
19202 ADDQ $0x02, AX
19203
19204gen_emit_repeat_end:
19205 MOVQ BX, ret+40(FP)
19206 RET
19207
19208// func emitCopy(dst []byte, offset int, length int) int
19209TEXT ·emitCopy(SB), NOSPLIT, $0-48
19210 XORQ BX, BX
19211 MOVQ dst_base+0(FP), AX
19212 MOVQ offset+24(FP), CX
19213 MOVQ length+32(FP), DX
19214
19215 // emitCopy
19216 CMPL CX, $0x00010000
19217 JB two_byte_offset_standalone
19218 CMPL DX, $0x40
19219 JBE four_bytes_remain_standalone
19220 MOVB $0xff, (AX)
19221 MOVL CX, 1(AX)
19222 LEAL -64(DX), DX
19223 ADDQ $0x05, BX
19224 ADDQ $0x05, AX
19225 CMPL DX, $0x04
19226 JB four_bytes_remain_standalone
19227
19228 // emitRepeat
19229emit_repeat_again_standalone_emit_copy:
19230 MOVL DX, SI
19231 LEAL -4(DX), DX
19232 CMPL SI, $0x08
19233 JBE repeat_two_standalone_emit_copy
19234 CMPL SI, $0x0c
19235 JAE cant_repeat_two_offset_standalone_emit_copy
19236 CMPL CX, $0x00000800
19237 JB repeat_two_offset_standalone_emit_copy
19238
19239cant_repeat_two_offset_standalone_emit_copy:
19240 CMPL DX, $0x00000104
19241 JB repeat_three_standalone_emit_copy
19242 CMPL DX, $0x00010100
19243 JB repeat_four_standalone_emit_copy
19244 CMPL DX, $0x0100ffff
19245 JB repeat_five_standalone_emit_copy
19246 LEAL -16842747(DX), DX
19247 MOVL $0xfffb001d, (AX)
19248 MOVB $0xff, 4(AX)
19249 ADDQ $0x05, AX
19250 ADDQ $0x05, BX
19251 JMP emit_repeat_again_standalone_emit_copy
19252
19253repeat_five_standalone_emit_copy:
19254 LEAL -65536(DX), DX
19255 MOVL DX, CX
19256 MOVW $0x001d, (AX)
19257 MOVW DX, 2(AX)
19258 SARL $0x10, CX
19259 MOVB CL, 4(AX)
19260 ADDQ $0x05, BX
19261 ADDQ $0x05, AX
19262 JMP gen_emit_copy_end
19263
19264repeat_four_standalone_emit_copy:
19265 LEAL -256(DX), DX
19266 MOVW $0x0019, (AX)
19267 MOVW DX, 2(AX)
19268 ADDQ $0x04, BX
19269 ADDQ $0x04, AX
19270 JMP gen_emit_copy_end
19271
19272repeat_three_standalone_emit_copy:
19273 LEAL -4(DX), DX
19274 MOVW $0x0015, (AX)
19275 MOVB DL, 2(AX)
19276 ADDQ $0x03, BX
19277 ADDQ $0x03, AX
19278 JMP gen_emit_copy_end
19279
19280repeat_two_standalone_emit_copy:
19281 SHLL $0x02, DX
19282 ORL $0x01, DX
19283 MOVW DX, (AX)
19284 ADDQ $0x02, BX
19285 ADDQ $0x02, AX
19286 JMP gen_emit_copy_end
19287
19288repeat_two_offset_standalone_emit_copy:
19289 XORQ SI, SI
19290 LEAL 1(SI)(DX*4), DX
19291 MOVB CL, 1(AX)
19292 SARL $0x08, CX
19293 SHLL $0x05, CX
19294 ORL CX, DX
19295 MOVB DL, (AX)
19296 ADDQ $0x02, BX
19297 ADDQ $0x02, AX
19298 JMP gen_emit_copy_end
19299
19300four_bytes_remain_standalone:
19301 TESTL DX, DX
19302 JZ gen_emit_copy_end
19303 XORL SI, SI
19304 LEAL -1(SI)(DX*4), DX
19305 MOVB DL, (AX)
19306 MOVL CX, 1(AX)
19307 ADDQ $0x05, BX
19308 ADDQ $0x05, AX
19309 JMP gen_emit_copy_end
19310
19311two_byte_offset_standalone:
19312 CMPL DX, $0x40
19313 JBE two_byte_offset_short_standalone
19314 CMPL CX, $0x00000800
19315 JAE long_offset_short_standalone
19316 MOVL $0x00000001, SI
19317 LEAL 16(SI), SI
19318 MOVB CL, 1(AX)
19319 MOVL CX, DI
19320 SHRL $0x08, DI
19321 SHLL $0x05, DI
19322 ORL DI, SI
19323 MOVB SI, (AX)
19324 ADDQ $0x02, BX
19325 ADDQ $0x02, AX
19326 SUBL $0x08, DX
19327
19328 // emitRepeat
19329 LEAL -4(DX), DX
19330 JMP cant_repeat_two_offset_standalone_emit_copy_short_2b
19331
19332emit_repeat_again_standalone_emit_copy_short_2b:
19333 MOVL DX, SI
19334 LEAL -4(DX), DX
19335 CMPL SI, $0x08
19336 JBE repeat_two_standalone_emit_copy_short_2b
19337 CMPL SI, $0x0c
19338 JAE cant_repeat_two_offset_standalone_emit_copy_short_2b
19339 CMPL CX, $0x00000800
19340 JB repeat_two_offset_standalone_emit_copy_short_2b
19341
19342cant_repeat_two_offset_standalone_emit_copy_short_2b:
19343 CMPL DX, $0x00000104
19344 JB repeat_three_standalone_emit_copy_short_2b
19345 CMPL DX, $0x00010100
19346 JB repeat_four_standalone_emit_copy_short_2b
19347 CMPL DX, $0x0100ffff
19348 JB repeat_five_standalone_emit_copy_short_2b
19349 LEAL -16842747(DX), DX
19350 MOVL $0xfffb001d, (AX)
19351 MOVB $0xff, 4(AX)
19352 ADDQ $0x05, AX
19353 ADDQ $0x05, BX
19354 JMP emit_repeat_again_standalone_emit_copy_short_2b
19355
19356repeat_five_standalone_emit_copy_short_2b:
19357 LEAL -65536(DX), DX
19358 MOVL DX, CX
19359 MOVW $0x001d, (AX)
19360 MOVW DX, 2(AX)
19361 SARL $0x10, CX
19362 MOVB CL, 4(AX)
19363 ADDQ $0x05, BX
19364 ADDQ $0x05, AX
19365 JMP gen_emit_copy_end
19366
19367repeat_four_standalone_emit_copy_short_2b:
19368 LEAL -256(DX), DX
19369 MOVW $0x0019, (AX)
19370 MOVW DX, 2(AX)
19371 ADDQ $0x04, BX
19372 ADDQ $0x04, AX
19373 JMP gen_emit_copy_end
19374
19375repeat_three_standalone_emit_copy_short_2b:
19376 LEAL -4(DX), DX
19377 MOVW $0x0015, (AX)
19378 MOVB DL, 2(AX)
19379 ADDQ $0x03, BX
19380 ADDQ $0x03, AX
19381 JMP gen_emit_copy_end
19382
19383repeat_two_standalone_emit_copy_short_2b:
19384 SHLL $0x02, DX
19385 ORL $0x01, DX
19386 MOVW DX, (AX)
19387 ADDQ $0x02, BX
19388 ADDQ $0x02, AX
19389 JMP gen_emit_copy_end
19390
19391repeat_two_offset_standalone_emit_copy_short_2b:
19392 XORQ SI, SI
19393 LEAL 1(SI)(DX*4), DX
19394 MOVB CL, 1(AX)
19395 SARL $0x08, CX
19396 SHLL $0x05, CX
19397 ORL CX, DX
19398 MOVB DL, (AX)
19399 ADDQ $0x02, BX
19400 ADDQ $0x02, AX
19401 JMP gen_emit_copy_end
19402
19403long_offset_short_standalone:
19404 MOVB $0xee, (AX)
19405 MOVW CX, 1(AX)
19406 LEAL -60(DX), DX
19407 ADDQ $0x03, AX
19408 ADDQ $0x03, BX
19409
19410 // emitRepeat
19411emit_repeat_again_standalone_emit_copy_short:
19412 MOVL DX, SI
19413 LEAL -4(DX), DX
19414 CMPL SI, $0x08
19415 JBE repeat_two_standalone_emit_copy_short
19416 CMPL SI, $0x0c
19417 JAE cant_repeat_two_offset_standalone_emit_copy_short
19418 CMPL CX, $0x00000800
19419 JB repeat_two_offset_standalone_emit_copy_short
19420
19421cant_repeat_two_offset_standalone_emit_copy_short:
19422 CMPL DX, $0x00000104
19423 JB repeat_three_standalone_emit_copy_short
19424 CMPL DX, $0x00010100
19425 JB repeat_four_standalone_emit_copy_short
19426 CMPL DX, $0x0100ffff
19427 JB repeat_five_standalone_emit_copy_short
19428 LEAL -16842747(DX), DX
19429 MOVL $0xfffb001d, (AX)
19430 MOVB $0xff, 4(AX)
19431 ADDQ $0x05, AX
19432 ADDQ $0x05, BX
19433 JMP emit_repeat_again_standalone_emit_copy_short
19434
19435repeat_five_standalone_emit_copy_short:
19436 LEAL -65536(DX), DX
19437 MOVL DX, CX
19438 MOVW $0x001d, (AX)
19439 MOVW DX, 2(AX)
19440 SARL $0x10, CX
19441 MOVB CL, 4(AX)
19442 ADDQ $0x05, BX
19443 ADDQ $0x05, AX
19444 JMP gen_emit_copy_end
19445
19446repeat_four_standalone_emit_copy_short:
19447 LEAL -256(DX), DX
19448 MOVW $0x0019, (AX)
19449 MOVW DX, 2(AX)
19450 ADDQ $0x04, BX
19451 ADDQ $0x04, AX
19452 JMP gen_emit_copy_end
19453
19454repeat_three_standalone_emit_copy_short:
19455 LEAL -4(DX), DX
19456 MOVW $0x0015, (AX)
19457 MOVB DL, 2(AX)
19458 ADDQ $0x03, BX
19459 ADDQ $0x03, AX
19460 JMP gen_emit_copy_end
19461
19462repeat_two_standalone_emit_copy_short:
19463 SHLL $0x02, DX
19464 ORL $0x01, DX
19465 MOVW DX, (AX)
19466 ADDQ $0x02, BX
19467 ADDQ $0x02, AX
19468 JMP gen_emit_copy_end
19469
19470repeat_two_offset_standalone_emit_copy_short:
19471 XORQ SI, SI
19472 LEAL 1(SI)(DX*4), DX
19473 MOVB CL, 1(AX)
19474 SARL $0x08, CX
19475 SHLL $0x05, CX
19476 ORL CX, DX
19477 MOVB DL, (AX)
19478 ADDQ $0x02, BX
19479 ADDQ $0x02, AX
19480 JMP gen_emit_copy_end
19481
19482two_byte_offset_short_standalone:
19483 MOVL DX, SI
19484 SHLL $0x02, SI
19485 CMPL DX, $0x0c
19486 JAE emit_copy_three_standalone
19487 CMPL CX, $0x00000800
19488 JAE emit_copy_three_standalone
19489 LEAL -15(SI), SI
19490 MOVB CL, 1(AX)
19491 SHRL $0x08, CX
19492 SHLL $0x05, CX
19493 ORL CX, SI
19494 MOVB SI, (AX)
19495 ADDQ $0x02, BX
19496 ADDQ $0x02, AX
19497 JMP gen_emit_copy_end
19498
19499emit_copy_three_standalone:
19500 LEAL -2(SI), SI
19501 MOVB SI, (AX)
19502 MOVW CX, 1(AX)
19503 ADDQ $0x03, BX
19504 ADDQ $0x03, AX
19505
19506gen_emit_copy_end:
19507 MOVQ BX, ret+40(FP)
19508 RET
19509
19510// func emitCopyNoRepeat(dst []byte, offset int, length int) int
19511TEXT ·emitCopyNoRepeat(SB), NOSPLIT, $0-48
19512 XORQ BX, BX
19513 MOVQ dst_base+0(FP), AX
19514 MOVQ offset+24(FP), CX
19515 MOVQ length+32(FP), DX
19516
19517 // emitCopy
19518 CMPL CX, $0x00010000
19519 JB two_byte_offset_standalone_snappy
19520
19521four_bytes_loop_back_standalone_snappy:
19522 CMPL DX, $0x40
19523 JBE four_bytes_remain_standalone_snappy
19524 MOVB $0xff, (AX)
19525 MOVL CX, 1(AX)
19526 LEAL -64(DX), DX
19527 ADDQ $0x05, BX
19528 ADDQ $0x05, AX
19529 CMPL DX, $0x04
19530 JB four_bytes_remain_standalone_snappy
19531 JMP four_bytes_loop_back_standalone_snappy
19532
19533four_bytes_remain_standalone_snappy:
19534 TESTL DX, DX
19535 JZ gen_emit_copy_end_snappy
19536 XORL SI, SI
19537 LEAL -1(SI)(DX*4), DX
19538 MOVB DL, (AX)
19539 MOVL CX, 1(AX)
19540 ADDQ $0x05, BX
19541 ADDQ $0x05, AX
19542 JMP gen_emit_copy_end_snappy
19543
19544two_byte_offset_standalone_snappy:
19545 CMPL DX, $0x40
19546 JBE two_byte_offset_short_standalone_snappy
19547 MOVB $0xee, (AX)
19548 MOVW CX, 1(AX)
19549 LEAL -60(DX), DX
19550 ADDQ $0x03, AX
19551 ADDQ $0x03, BX
19552 JMP two_byte_offset_standalone_snappy
19553
19554two_byte_offset_short_standalone_snappy:
19555 MOVL DX, SI
19556 SHLL $0x02, SI
19557 CMPL DX, $0x0c
19558 JAE emit_copy_three_standalone_snappy
19559 CMPL CX, $0x00000800
19560 JAE emit_copy_three_standalone_snappy
19561 LEAL -15(SI), SI
19562 MOVB CL, 1(AX)
19563 SHRL $0x08, CX
19564 SHLL $0x05, CX
19565 ORL CX, SI
19566 MOVB SI, (AX)
19567 ADDQ $0x02, BX
19568 ADDQ $0x02, AX
19569 JMP gen_emit_copy_end_snappy
19570
19571emit_copy_three_standalone_snappy:
19572 LEAL -2(SI), SI
19573 MOVB SI, (AX)
19574 MOVW CX, 1(AX)
19575 ADDQ $0x03, BX
19576 ADDQ $0x03, AX
19577
19578gen_emit_copy_end_snappy:
19579 MOVQ BX, ret+40(FP)
19580 RET
19581
19582// func matchLen(a []byte, b []byte) int
19583// Requires: BMI
19584TEXT ·matchLen(SB), NOSPLIT, $0-56
19585 MOVQ a_base+0(FP), AX
19586 MOVQ b_base+24(FP), CX
19587 MOVQ a_len+8(FP), DX
19588
19589 // matchLen
19590 XORL SI, SI
19591
19592matchlen_loopback_16_standalone:
19593 CMPL DX, $0x10
19594 JB matchlen_match8_standalone
19595 MOVQ (AX)(SI*1), BX
19596 MOVQ 8(AX)(SI*1), DI
19597 XORQ (CX)(SI*1), BX
19598 JNZ matchlen_bsf_8_standalone
19599 XORQ 8(CX)(SI*1), DI
19600 JNZ matchlen_bsf_16standalone
19601 LEAL -16(DX), DX
19602 LEAL 16(SI), SI
19603 JMP matchlen_loopback_16_standalone
19604
19605matchlen_bsf_16standalone:
19606#ifdef GOAMD64_v3
19607 TZCNTQ DI, DI
19608
19609#else
19610 BSFQ DI, DI
19611
19612#endif
19613 SARQ $0x03, DI
19614 LEAL 8(SI)(DI*1), SI
19615 JMP gen_match_len_end
19616
19617matchlen_match8_standalone:
19618 CMPL DX, $0x08
19619 JB matchlen_match4_standalone
19620 MOVQ (AX)(SI*1), BX
19621 XORQ (CX)(SI*1), BX
19622 JNZ matchlen_bsf_8_standalone
19623 LEAL -8(DX), DX
19624 LEAL 8(SI), SI
19625 JMP matchlen_match4_standalone
19626
19627matchlen_bsf_8_standalone:
19628#ifdef GOAMD64_v3
19629 TZCNTQ BX, BX
19630
19631#else
19632 BSFQ BX, BX
19633
19634#endif
19635 SARQ $0x03, BX
19636 LEAL (SI)(BX*1), SI
19637 JMP gen_match_len_end
19638
19639matchlen_match4_standalone:
19640 CMPL DX, $0x04
19641 JB matchlen_match2_standalone
19642 MOVL (AX)(SI*1), BX
19643 CMPL (CX)(SI*1), BX
19644 JNE matchlen_match2_standalone
19645 LEAL -4(DX), DX
19646 LEAL 4(SI), SI
19647
19648matchlen_match2_standalone:
19649 CMPL DX, $0x01
19650 JE matchlen_match1_standalone
19651 JB gen_match_len_end
19652 MOVW (AX)(SI*1), BX
19653 CMPW (CX)(SI*1), BX
19654 JNE matchlen_match1_standalone
19655 LEAL 2(SI), SI
19656 SUBL $0x02, DX
19657 JZ gen_match_len_end
19658
19659matchlen_match1_standalone:
19660 MOVB (AX)(SI*1), BL
19661 CMPB (CX)(SI*1), BL
19662 JNE gen_match_len_end
19663 LEAL 1(SI), SI
19664
19665gen_match_len_end:
19666 MOVQ SI, ret+48(FP)
19667 RET
19668
19669// func cvtLZ4BlockAsm(dst []byte, src []byte) (uncompressed int, dstUsed int)
19670// Requires: SSE2
19671TEXT ·cvtLZ4BlockAsm(SB), NOSPLIT, $0-64
19672 XORQ SI, SI
19673 MOVQ dst_base+0(FP), AX
19674 MOVQ dst_len+8(FP), CX
19675 MOVQ src_base+24(FP), DX
19676 MOVQ src_len+32(FP), BX
19677 LEAQ (DX)(BX*1), BX
19678 LEAQ -10(AX)(CX*1), CX
19679 XORQ DI, DI
19680
19681lz4_s2_loop:
19682 CMPQ DX, BX
19683 JAE lz4_s2_corrupt
19684 CMPQ AX, CX
19685 JAE lz4_s2_dstfull
19686 MOVBQZX (DX), R8
19687 MOVQ R8, R9
19688 MOVQ R8, R10
19689 SHRQ $0x04, R9
19690 ANDQ $0x0f, R10
19691 CMPQ R8, $0xf0
19692 JB lz4_s2_ll_end
19693
19694lz4_s2_ll_loop:
19695 INCQ DX
19696 CMPQ DX, BX
19697 JAE lz4_s2_corrupt
19698 MOVBQZX (DX), R8
19699 ADDQ R8, R9
19700 CMPQ R8, $0xff
19701 JEQ lz4_s2_ll_loop
19702
19703lz4_s2_ll_end:
19704 LEAQ (DX)(R9*1), R8
19705 ADDQ $0x04, R10
19706 CMPQ R8, BX
19707 JAE lz4_s2_corrupt
19708 INCQ DX
19709 INCQ R8
19710 TESTQ R9, R9
19711 JZ lz4_s2_lits_done
19712 LEAQ (AX)(R9*1), R11
19713 CMPQ R11, CX
19714 JAE lz4_s2_dstfull
19715 ADDQ R9, SI
19716 LEAL -1(R9), R11
19717 CMPL R11, $0x3c
19718 JB one_byte_lz4_s2
19719 CMPL R11, $0x00000100
19720 JB two_bytes_lz4_s2
19721 CMPL R11, $0x00010000
19722 JB three_bytes_lz4_s2
19723 CMPL R11, $0x01000000
19724 JB four_bytes_lz4_s2
19725 MOVB $0xfc, (AX)
19726 MOVL R11, 1(AX)
19727 ADDQ $0x05, AX
19728 JMP memmove_long_lz4_s2
19729
19730four_bytes_lz4_s2:
19731 MOVL R11, R12
19732 SHRL $0x10, R12
19733 MOVB $0xf8, (AX)
19734 MOVW R11, 1(AX)
19735 MOVB R12, 3(AX)
19736 ADDQ $0x04, AX
19737 JMP memmove_long_lz4_s2
19738
19739three_bytes_lz4_s2:
19740 MOVB $0xf4, (AX)
19741 MOVW R11, 1(AX)
19742 ADDQ $0x03, AX
19743 JMP memmove_long_lz4_s2
19744
19745two_bytes_lz4_s2:
19746 MOVB $0xf0, (AX)
19747 MOVB R11, 1(AX)
19748 ADDQ $0x02, AX
19749 CMPL R11, $0x40
19750 JB memmove_lz4_s2
19751 JMP memmove_long_lz4_s2
19752
19753one_byte_lz4_s2:
19754 SHLB $0x02, R11
19755 MOVB R11, (AX)
19756 ADDQ $0x01, AX
19757
19758memmove_lz4_s2:
19759 LEAQ (AX)(R9*1), R11
19760
19761 // genMemMoveShort
19762 CMPQ R9, $0x08
19763 JBE emit_lit_memmove_lz4_s2_memmove_move_8
19764 CMPQ R9, $0x10
19765 JBE emit_lit_memmove_lz4_s2_memmove_move_8through16
19766 CMPQ R9, $0x20
19767 JBE emit_lit_memmove_lz4_s2_memmove_move_17through32
19768 JMP emit_lit_memmove_lz4_s2_memmove_move_33through64
19769
19770emit_lit_memmove_lz4_s2_memmove_move_8:
19771 MOVQ (DX), R12
19772 MOVQ R12, (AX)
19773 JMP memmove_end_copy_lz4_s2
19774
19775emit_lit_memmove_lz4_s2_memmove_move_8through16:
19776 MOVQ (DX), R12
19777 MOVQ -8(DX)(R9*1), DX
19778 MOVQ R12, (AX)
19779 MOVQ DX, -8(AX)(R9*1)
19780 JMP memmove_end_copy_lz4_s2
19781
19782emit_lit_memmove_lz4_s2_memmove_move_17through32:
19783 MOVOU (DX), X0
19784 MOVOU -16(DX)(R9*1), X1
19785 MOVOU X0, (AX)
19786 MOVOU X1, -16(AX)(R9*1)
19787 JMP memmove_end_copy_lz4_s2
19788
19789emit_lit_memmove_lz4_s2_memmove_move_33through64:
19790 MOVOU (DX), X0
19791 MOVOU 16(DX), X1
19792 MOVOU -32(DX)(R9*1), X2
19793 MOVOU -16(DX)(R9*1), X3
19794 MOVOU X0, (AX)
19795 MOVOU X1, 16(AX)
19796 MOVOU X2, -32(AX)(R9*1)
19797 MOVOU X3, -16(AX)(R9*1)
19798
19799memmove_end_copy_lz4_s2:
19800 MOVQ R11, AX
19801 JMP lz4_s2_lits_emit_done
19802
19803memmove_long_lz4_s2:
19804 LEAQ (AX)(R9*1), R11
19805
19806 // genMemMoveLong
19807 MOVOU (DX), X0
19808 MOVOU 16(DX), X1
19809 MOVOU -32(DX)(R9*1), X2
19810 MOVOU -16(DX)(R9*1), X3
19811 MOVQ R9, R13
19812 SHRQ $0x05, R13
19813 MOVQ AX, R12
19814 ANDL $0x0000001f, R12
19815 MOVQ $0x00000040, R14
19816 SUBQ R12, R14
19817 DECQ R13
19818 JA emit_lit_memmove_long_lz4_s2large_forward_sse_loop_32
19819 LEAQ -32(DX)(R14*1), R12
19820 LEAQ -32(AX)(R14*1), R15
19821
19822emit_lit_memmove_long_lz4_s2large_big_loop_back:
19823 MOVOU (R12), X4
19824 MOVOU 16(R12), X5
19825 MOVOA X4, (R15)
19826 MOVOA X5, 16(R15)
19827 ADDQ $0x20, R15
19828 ADDQ $0x20, R12
19829 ADDQ $0x20, R14
19830 DECQ R13
19831 JNA emit_lit_memmove_long_lz4_s2large_big_loop_back
19832
19833emit_lit_memmove_long_lz4_s2large_forward_sse_loop_32:
19834 MOVOU -32(DX)(R14*1), X4
19835 MOVOU -16(DX)(R14*1), X5
19836 MOVOA X4, -32(AX)(R14*1)
19837 MOVOA X5, -16(AX)(R14*1)
19838 ADDQ $0x20, R14
19839 CMPQ R9, R14
19840 JAE emit_lit_memmove_long_lz4_s2large_forward_sse_loop_32
19841 MOVOU X0, (AX)
19842 MOVOU X1, 16(AX)
19843 MOVOU X2, -32(AX)(R9*1)
19844 MOVOU X3, -16(AX)(R9*1)
19845 MOVQ R11, AX
19846
19847lz4_s2_lits_emit_done:
19848 MOVQ R8, DX
19849
19850lz4_s2_lits_done:
19851 CMPQ DX, BX
19852 JNE lz4_s2_match
19853 CMPQ R10, $0x04
19854 JEQ lz4_s2_done
19855 JMP lz4_s2_corrupt
19856
19857lz4_s2_match:
19858 LEAQ 2(DX), R8
19859 CMPQ R8, BX
19860 JAE lz4_s2_corrupt
19861 MOVWQZX (DX), R9
19862 MOVQ R8, DX
19863 TESTQ R9, R9
19864 JZ lz4_s2_corrupt
19865 CMPQ R9, SI
19866 JA lz4_s2_corrupt
19867 CMPQ R10, $0x13
19868 JNE lz4_s2_ml_done
19869
19870lz4_s2_ml_loop:
19871 MOVBQZX (DX), R8
19872 INCQ DX
19873 ADDQ R8, R10
19874 CMPQ DX, BX
19875 JAE lz4_s2_corrupt
19876 CMPQ R8, $0xff
19877 JEQ lz4_s2_ml_loop
19878
19879lz4_s2_ml_done:
19880 ADDQ R10, SI
19881 CMPQ R9, DI
19882 JNE lz4_s2_docopy
19883
19884 // emitRepeat
19885emit_repeat_again_lz4_s2:
19886 MOVL R10, R8
19887 LEAL -4(R10), R10
19888 CMPL R8, $0x08
19889 JBE repeat_two_lz4_s2
19890 CMPL R8, $0x0c
19891 JAE cant_repeat_two_offset_lz4_s2
19892 CMPL R9, $0x00000800
19893 JB repeat_two_offset_lz4_s2
19894
19895cant_repeat_two_offset_lz4_s2:
19896 CMPL R10, $0x00000104
19897 JB repeat_three_lz4_s2
19898 CMPL R10, $0x00010100
19899 JB repeat_four_lz4_s2
19900 CMPL R10, $0x0100ffff
19901 JB repeat_five_lz4_s2
19902 LEAL -16842747(R10), R10
19903 MOVL $0xfffb001d, (AX)
19904 MOVB $0xff, 4(AX)
19905 ADDQ $0x05, AX
19906 JMP emit_repeat_again_lz4_s2
19907
19908repeat_five_lz4_s2:
19909 LEAL -65536(R10), R10
19910 MOVL R10, R9
19911 MOVW $0x001d, (AX)
19912 MOVW R10, 2(AX)
19913 SARL $0x10, R9
19914 MOVB R9, 4(AX)
19915 ADDQ $0x05, AX
19916 JMP lz4_s2_loop
19917
19918repeat_four_lz4_s2:
19919 LEAL -256(R10), R10
19920 MOVW $0x0019, (AX)
19921 MOVW R10, 2(AX)
19922 ADDQ $0x04, AX
19923 JMP lz4_s2_loop
19924
19925repeat_three_lz4_s2:
19926 LEAL -4(R10), R10
19927 MOVW $0x0015, (AX)
19928 MOVB R10, 2(AX)
19929 ADDQ $0x03, AX
19930 JMP lz4_s2_loop
19931
19932repeat_two_lz4_s2:
19933 SHLL $0x02, R10
19934 ORL $0x01, R10
19935 MOVW R10, (AX)
19936 ADDQ $0x02, AX
19937 JMP lz4_s2_loop
19938
19939repeat_two_offset_lz4_s2:
19940 XORQ R8, R8
19941 LEAL 1(R8)(R10*4), R10
19942 MOVB R9, 1(AX)
19943 SARL $0x08, R9
19944 SHLL $0x05, R9
19945 ORL R9, R10
19946 MOVB R10, (AX)
19947 ADDQ $0x02, AX
19948 JMP lz4_s2_loop
19949
19950lz4_s2_docopy:
19951 MOVQ R9, DI
19952
19953 // emitCopy
19954 CMPL R10, $0x40
19955 JBE two_byte_offset_short_lz4_s2
19956 CMPL R9, $0x00000800
19957 JAE long_offset_short_lz4_s2
19958 MOVL $0x00000001, R8
19959 LEAL 16(R8), R8
19960 MOVB R9, 1(AX)
19961 MOVL R9, R11
19962 SHRL $0x08, R11
19963 SHLL $0x05, R11
19964 ORL R11, R8
19965 MOVB R8, (AX)
19966 ADDQ $0x02, AX
19967 SUBL $0x08, R10
19968
19969 // emitRepeat
19970 LEAL -4(R10), R10
19971 JMP cant_repeat_two_offset_lz4_s2_emit_copy_short_2b
19972
19973emit_repeat_again_lz4_s2_emit_copy_short_2b:
19974 MOVL R10, R8
19975 LEAL -4(R10), R10
19976 CMPL R8, $0x08
19977 JBE repeat_two_lz4_s2_emit_copy_short_2b
19978 CMPL R8, $0x0c
19979 JAE cant_repeat_two_offset_lz4_s2_emit_copy_short_2b
19980 CMPL R9, $0x00000800
19981 JB repeat_two_offset_lz4_s2_emit_copy_short_2b
19982
19983cant_repeat_two_offset_lz4_s2_emit_copy_short_2b:
19984 CMPL R10, $0x00000104
19985 JB repeat_three_lz4_s2_emit_copy_short_2b
19986 CMPL R10, $0x00010100
19987 JB repeat_four_lz4_s2_emit_copy_short_2b
19988 CMPL R10, $0x0100ffff
19989 JB repeat_five_lz4_s2_emit_copy_short_2b
19990 LEAL -16842747(R10), R10
19991 MOVL $0xfffb001d, (AX)
19992 MOVB $0xff, 4(AX)
19993 ADDQ $0x05, AX
19994 JMP emit_repeat_again_lz4_s2_emit_copy_short_2b
19995
19996repeat_five_lz4_s2_emit_copy_short_2b:
19997 LEAL -65536(R10), R10
19998 MOVL R10, R9
19999 MOVW $0x001d, (AX)
20000 MOVW R10, 2(AX)
20001 SARL $0x10, R9
20002 MOVB R9, 4(AX)
20003 ADDQ $0x05, AX
20004 JMP lz4_s2_loop
20005
20006repeat_four_lz4_s2_emit_copy_short_2b:
20007 LEAL -256(R10), R10
20008 MOVW $0x0019, (AX)
20009 MOVW R10, 2(AX)
20010 ADDQ $0x04, AX
20011 JMP lz4_s2_loop
20012
20013repeat_three_lz4_s2_emit_copy_short_2b:
20014 LEAL -4(R10), R10
20015 MOVW $0x0015, (AX)
20016 MOVB R10, 2(AX)
20017 ADDQ $0x03, AX
20018 JMP lz4_s2_loop
20019
20020repeat_two_lz4_s2_emit_copy_short_2b:
20021 SHLL $0x02, R10
20022 ORL $0x01, R10
20023 MOVW R10, (AX)
20024 ADDQ $0x02, AX
20025 JMP lz4_s2_loop
20026
20027repeat_two_offset_lz4_s2_emit_copy_short_2b:
20028 XORQ R8, R8
20029 LEAL 1(R8)(R10*4), R10
20030 MOVB R9, 1(AX)
20031 SARL $0x08, R9
20032 SHLL $0x05, R9
20033 ORL R9, R10
20034 MOVB R10, (AX)
20035 ADDQ $0x02, AX
20036 JMP lz4_s2_loop
20037
20038long_offset_short_lz4_s2:
20039 MOVB $0xee, (AX)
20040 MOVW R9, 1(AX)
20041 LEAL -60(R10), R10
20042 ADDQ $0x03, AX
20043
20044 // emitRepeat
20045emit_repeat_again_lz4_s2_emit_copy_short:
20046 MOVL R10, R8
20047 LEAL -4(R10), R10
20048 CMPL R8, $0x08
20049 JBE repeat_two_lz4_s2_emit_copy_short
20050 CMPL R8, $0x0c
20051 JAE cant_repeat_two_offset_lz4_s2_emit_copy_short
20052 CMPL R9, $0x00000800
20053 JB repeat_two_offset_lz4_s2_emit_copy_short
20054
20055cant_repeat_two_offset_lz4_s2_emit_copy_short:
20056 CMPL R10, $0x00000104
20057 JB repeat_three_lz4_s2_emit_copy_short
20058 CMPL R10, $0x00010100
20059 JB repeat_four_lz4_s2_emit_copy_short
20060 CMPL R10, $0x0100ffff
20061 JB repeat_five_lz4_s2_emit_copy_short
20062 LEAL -16842747(R10), R10
20063 MOVL $0xfffb001d, (AX)
20064 MOVB $0xff, 4(AX)
20065 ADDQ $0x05, AX
20066 JMP emit_repeat_again_lz4_s2_emit_copy_short
20067
20068repeat_five_lz4_s2_emit_copy_short:
20069 LEAL -65536(R10), R10
20070 MOVL R10, R9
20071 MOVW $0x001d, (AX)
20072 MOVW R10, 2(AX)
20073 SARL $0x10, R9
20074 MOVB R9, 4(AX)
20075 ADDQ $0x05, AX
20076 JMP lz4_s2_loop
20077
20078repeat_four_lz4_s2_emit_copy_short:
20079 LEAL -256(R10), R10
20080 MOVW $0x0019, (AX)
20081 MOVW R10, 2(AX)
20082 ADDQ $0x04, AX
20083 JMP lz4_s2_loop
20084
20085repeat_three_lz4_s2_emit_copy_short:
20086 LEAL -4(R10), R10
20087 MOVW $0x0015, (AX)
20088 MOVB R10, 2(AX)
20089 ADDQ $0x03, AX
20090 JMP lz4_s2_loop
20091
20092repeat_two_lz4_s2_emit_copy_short:
20093 SHLL $0x02, R10
20094 ORL $0x01, R10
20095 MOVW R10, (AX)
20096 ADDQ $0x02, AX
20097 JMP lz4_s2_loop
20098
20099repeat_two_offset_lz4_s2_emit_copy_short:
20100 XORQ R8, R8
20101 LEAL 1(R8)(R10*4), R10
20102 MOVB R9, 1(AX)
20103 SARL $0x08, R9
20104 SHLL $0x05, R9
20105 ORL R9, R10
20106 MOVB R10, (AX)
20107 ADDQ $0x02, AX
20108 JMP lz4_s2_loop
20109
20110two_byte_offset_short_lz4_s2:
20111 MOVL R10, R8
20112 SHLL $0x02, R8
20113 CMPL R10, $0x0c
20114 JAE emit_copy_three_lz4_s2
20115 CMPL R9, $0x00000800
20116 JAE emit_copy_three_lz4_s2
20117 LEAL -15(R8), R8
20118 MOVB R9, 1(AX)
20119 SHRL $0x08, R9
20120 SHLL $0x05, R9
20121 ORL R9, R8
20122 MOVB R8, (AX)
20123 ADDQ $0x02, AX
20124 JMP lz4_s2_loop
20125
20126emit_copy_three_lz4_s2:
20127 LEAL -2(R8), R8
20128 MOVB R8, (AX)
20129 MOVW R9, 1(AX)
20130 ADDQ $0x03, AX
20131 JMP lz4_s2_loop
20132
20133lz4_s2_done:
20134 MOVQ dst_base+0(FP), CX
20135 SUBQ CX, AX
20136 MOVQ SI, uncompressed+48(FP)
20137 MOVQ AX, dstUsed+56(FP)
20138 RET
20139
20140lz4_s2_corrupt:
20141 XORQ AX, AX
20142 LEAQ -1(AX), SI
20143 MOVQ SI, uncompressed+48(FP)
20144 RET
20145
20146lz4_s2_dstfull:
20147 XORQ AX, AX
20148 LEAQ -2(AX), SI
20149 MOVQ SI, uncompressed+48(FP)
20150 RET
20151
20152// func cvtLZ4sBlockAsm(dst []byte, src []byte) (uncompressed int, dstUsed int)
20153// Requires: SSE2
20154TEXT ·cvtLZ4sBlockAsm(SB), NOSPLIT, $0-64
20155 XORQ SI, SI
20156 MOVQ dst_base+0(FP), AX
20157 MOVQ dst_len+8(FP), CX
20158 MOVQ src_base+24(FP), DX
20159 MOVQ src_len+32(FP), BX
20160 LEAQ (DX)(BX*1), BX
20161 LEAQ -10(AX)(CX*1), CX
20162 XORQ DI, DI
20163
20164lz4s_s2_loop:
20165 CMPQ DX, BX
20166 JAE lz4s_s2_corrupt
20167 CMPQ AX, CX
20168 JAE lz4s_s2_dstfull
20169 MOVBQZX (DX), R8
20170 MOVQ R8, R9
20171 MOVQ R8, R10
20172 SHRQ $0x04, R9
20173 ANDQ $0x0f, R10
20174 CMPQ R8, $0xf0
20175 JB lz4s_s2_ll_end
20176
20177lz4s_s2_ll_loop:
20178 INCQ DX
20179 CMPQ DX, BX
20180 JAE lz4s_s2_corrupt
20181 MOVBQZX (DX), R8
20182 ADDQ R8, R9
20183 CMPQ R8, $0xff
20184 JEQ lz4s_s2_ll_loop
20185
20186lz4s_s2_ll_end:
20187 LEAQ (DX)(R9*1), R8
20188 ADDQ $0x03, R10
20189 CMPQ R8, BX
20190 JAE lz4s_s2_corrupt
20191 INCQ DX
20192 INCQ R8
20193 TESTQ R9, R9
20194 JZ lz4s_s2_lits_done
20195 LEAQ (AX)(R9*1), R11
20196 CMPQ R11, CX
20197 JAE lz4s_s2_dstfull
20198 ADDQ R9, SI
20199 LEAL -1(R9), R11
20200 CMPL R11, $0x3c
20201 JB one_byte_lz4s_s2
20202 CMPL R11, $0x00000100
20203 JB two_bytes_lz4s_s2
20204 CMPL R11, $0x00010000
20205 JB three_bytes_lz4s_s2
20206 CMPL R11, $0x01000000
20207 JB four_bytes_lz4s_s2
20208 MOVB $0xfc, (AX)
20209 MOVL R11, 1(AX)
20210 ADDQ $0x05, AX
20211 JMP memmove_long_lz4s_s2
20212
20213four_bytes_lz4s_s2:
20214 MOVL R11, R12
20215 SHRL $0x10, R12
20216 MOVB $0xf8, (AX)
20217 MOVW R11, 1(AX)
20218 MOVB R12, 3(AX)
20219 ADDQ $0x04, AX
20220 JMP memmove_long_lz4s_s2
20221
20222three_bytes_lz4s_s2:
20223 MOVB $0xf4, (AX)
20224 MOVW R11, 1(AX)
20225 ADDQ $0x03, AX
20226 JMP memmove_long_lz4s_s2
20227
20228two_bytes_lz4s_s2:
20229 MOVB $0xf0, (AX)
20230 MOVB R11, 1(AX)
20231 ADDQ $0x02, AX
20232 CMPL R11, $0x40
20233 JB memmove_lz4s_s2
20234 JMP memmove_long_lz4s_s2
20235
20236one_byte_lz4s_s2:
20237 SHLB $0x02, R11
20238 MOVB R11, (AX)
20239 ADDQ $0x01, AX
20240
20241memmove_lz4s_s2:
20242 LEAQ (AX)(R9*1), R11
20243
20244 // genMemMoveShort
20245 CMPQ R9, $0x08
20246 JBE emit_lit_memmove_lz4s_s2_memmove_move_8
20247 CMPQ R9, $0x10
20248 JBE emit_lit_memmove_lz4s_s2_memmove_move_8through16
20249 CMPQ R9, $0x20
20250 JBE emit_lit_memmove_lz4s_s2_memmove_move_17through32
20251 JMP emit_lit_memmove_lz4s_s2_memmove_move_33through64
20252
20253emit_lit_memmove_lz4s_s2_memmove_move_8:
20254 MOVQ (DX), R12
20255 MOVQ R12, (AX)
20256 JMP memmove_end_copy_lz4s_s2
20257
20258emit_lit_memmove_lz4s_s2_memmove_move_8through16:
20259 MOVQ (DX), R12
20260 MOVQ -8(DX)(R9*1), DX
20261 MOVQ R12, (AX)
20262 MOVQ DX, -8(AX)(R9*1)
20263 JMP memmove_end_copy_lz4s_s2
20264
20265emit_lit_memmove_lz4s_s2_memmove_move_17through32:
20266 MOVOU (DX), X0
20267 MOVOU -16(DX)(R9*1), X1
20268 MOVOU X0, (AX)
20269 MOVOU X1, -16(AX)(R9*1)
20270 JMP memmove_end_copy_lz4s_s2
20271
20272emit_lit_memmove_lz4s_s2_memmove_move_33through64:
20273 MOVOU (DX), X0
20274 MOVOU 16(DX), X1
20275 MOVOU -32(DX)(R9*1), X2
20276 MOVOU -16(DX)(R9*1), X3
20277 MOVOU X0, (AX)
20278 MOVOU X1, 16(AX)
20279 MOVOU X2, -32(AX)(R9*1)
20280 MOVOU X3, -16(AX)(R9*1)
20281
20282memmove_end_copy_lz4s_s2:
20283 MOVQ R11, AX
20284 JMP lz4s_s2_lits_emit_done
20285
20286memmove_long_lz4s_s2:
20287 LEAQ (AX)(R9*1), R11
20288
20289 // genMemMoveLong
20290 MOVOU (DX), X0
20291 MOVOU 16(DX), X1
20292 MOVOU -32(DX)(R9*1), X2
20293 MOVOU -16(DX)(R9*1), X3
20294 MOVQ R9, R13
20295 SHRQ $0x05, R13
20296 MOVQ AX, R12
20297 ANDL $0x0000001f, R12
20298 MOVQ $0x00000040, R14
20299 SUBQ R12, R14
20300 DECQ R13
20301 JA emit_lit_memmove_long_lz4s_s2large_forward_sse_loop_32
20302 LEAQ -32(DX)(R14*1), R12
20303 LEAQ -32(AX)(R14*1), R15
20304
20305emit_lit_memmove_long_lz4s_s2large_big_loop_back:
20306 MOVOU (R12), X4
20307 MOVOU 16(R12), X5
20308 MOVOA X4, (R15)
20309 MOVOA X5, 16(R15)
20310 ADDQ $0x20, R15
20311 ADDQ $0x20, R12
20312 ADDQ $0x20, R14
20313 DECQ R13
20314 JNA emit_lit_memmove_long_lz4s_s2large_big_loop_back
20315
20316emit_lit_memmove_long_lz4s_s2large_forward_sse_loop_32:
20317 MOVOU -32(DX)(R14*1), X4
20318 MOVOU -16(DX)(R14*1), X5
20319 MOVOA X4, -32(AX)(R14*1)
20320 MOVOA X5, -16(AX)(R14*1)
20321 ADDQ $0x20, R14
20322 CMPQ R9, R14
20323 JAE emit_lit_memmove_long_lz4s_s2large_forward_sse_loop_32
20324 MOVOU X0, (AX)
20325 MOVOU X1, 16(AX)
20326 MOVOU X2, -32(AX)(R9*1)
20327 MOVOU X3, -16(AX)(R9*1)
20328 MOVQ R11, AX
20329
20330lz4s_s2_lits_emit_done:
20331 MOVQ R8, DX
20332
20333lz4s_s2_lits_done:
20334 CMPQ DX, BX
20335 JNE lz4s_s2_match
20336 CMPQ R10, $0x03
20337 JEQ lz4s_s2_done
20338 JMP lz4s_s2_corrupt
20339
20340lz4s_s2_match:
20341 CMPQ R10, $0x03
20342 JEQ lz4s_s2_loop
20343 LEAQ 2(DX), R8
20344 CMPQ R8, BX
20345 JAE lz4s_s2_corrupt
20346 MOVWQZX (DX), R9
20347 MOVQ R8, DX
20348 TESTQ R9, R9
20349 JZ lz4s_s2_corrupt
20350 CMPQ R9, SI
20351 JA lz4s_s2_corrupt
20352 CMPQ R10, $0x12
20353 JNE lz4s_s2_ml_done
20354
20355lz4s_s2_ml_loop:
20356 MOVBQZX (DX), R8
20357 INCQ DX
20358 ADDQ R8, R10
20359 CMPQ DX, BX
20360 JAE lz4s_s2_corrupt
20361 CMPQ R8, $0xff
20362 JEQ lz4s_s2_ml_loop
20363
20364lz4s_s2_ml_done:
20365 ADDQ R10, SI
20366 CMPQ R9, DI
20367 JNE lz4s_s2_docopy
20368
20369 // emitRepeat
20370emit_repeat_again_lz4_s2:
20371 MOVL R10, R8
20372 LEAL -4(R10), R10
20373 CMPL R8, $0x08
20374 JBE repeat_two_lz4_s2
20375 CMPL R8, $0x0c
20376 JAE cant_repeat_two_offset_lz4_s2
20377 CMPL R9, $0x00000800
20378 JB repeat_two_offset_lz4_s2
20379
20380cant_repeat_two_offset_lz4_s2:
20381 CMPL R10, $0x00000104
20382 JB repeat_three_lz4_s2
20383 CMPL R10, $0x00010100
20384 JB repeat_four_lz4_s2
20385 CMPL R10, $0x0100ffff
20386 JB repeat_five_lz4_s2
20387 LEAL -16842747(R10), R10
20388 MOVL $0xfffb001d, (AX)
20389 MOVB $0xff, 4(AX)
20390 ADDQ $0x05, AX
20391 JMP emit_repeat_again_lz4_s2
20392
20393repeat_five_lz4_s2:
20394 LEAL -65536(R10), R10
20395 MOVL R10, R9
20396 MOVW $0x001d, (AX)
20397 MOVW R10, 2(AX)
20398 SARL $0x10, R9
20399 MOVB R9, 4(AX)
20400 ADDQ $0x05, AX
20401 JMP lz4s_s2_loop
20402
20403repeat_four_lz4_s2:
20404 LEAL -256(R10), R10
20405 MOVW $0x0019, (AX)
20406 MOVW R10, 2(AX)
20407 ADDQ $0x04, AX
20408 JMP lz4s_s2_loop
20409
20410repeat_three_lz4_s2:
20411 LEAL -4(R10), R10
20412 MOVW $0x0015, (AX)
20413 MOVB R10, 2(AX)
20414 ADDQ $0x03, AX
20415 JMP lz4s_s2_loop
20416
20417repeat_two_lz4_s2:
20418 SHLL $0x02, R10
20419 ORL $0x01, R10
20420 MOVW R10, (AX)
20421 ADDQ $0x02, AX
20422 JMP lz4s_s2_loop
20423
20424repeat_two_offset_lz4_s2:
20425 XORQ R8, R8
20426 LEAL 1(R8)(R10*4), R10
20427 MOVB R9, 1(AX)
20428 SARL $0x08, R9
20429 SHLL $0x05, R9
20430 ORL R9, R10
20431 MOVB R10, (AX)
20432 ADDQ $0x02, AX
20433 JMP lz4s_s2_loop
20434
20435lz4s_s2_docopy:
20436 MOVQ R9, DI
20437
20438 // emitCopy
20439 CMPL R10, $0x40
20440 JBE two_byte_offset_short_lz4_s2
20441 CMPL R9, $0x00000800
20442 JAE long_offset_short_lz4_s2
20443 MOVL $0x00000001, R8
20444 LEAL 16(R8), R8
20445 MOVB R9, 1(AX)
20446 MOVL R9, R11
20447 SHRL $0x08, R11
20448 SHLL $0x05, R11
20449 ORL R11, R8
20450 MOVB R8, (AX)
20451 ADDQ $0x02, AX
20452 SUBL $0x08, R10
20453
20454 // emitRepeat
20455 LEAL -4(R10), R10
20456 JMP cant_repeat_two_offset_lz4_s2_emit_copy_short_2b
20457
20458emit_repeat_again_lz4_s2_emit_copy_short_2b:
20459 MOVL R10, R8
20460 LEAL -4(R10), R10
20461 CMPL R8, $0x08
20462 JBE repeat_two_lz4_s2_emit_copy_short_2b
20463 CMPL R8, $0x0c
20464 JAE cant_repeat_two_offset_lz4_s2_emit_copy_short_2b
20465 CMPL R9, $0x00000800
20466 JB repeat_two_offset_lz4_s2_emit_copy_short_2b
20467
20468cant_repeat_two_offset_lz4_s2_emit_copy_short_2b:
20469 CMPL R10, $0x00000104
20470 JB repeat_three_lz4_s2_emit_copy_short_2b
20471 CMPL R10, $0x00010100
20472 JB repeat_four_lz4_s2_emit_copy_short_2b
20473 CMPL R10, $0x0100ffff
20474 JB repeat_five_lz4_s2_emit_copy_short_2b
20475 LEAL -16842747(R10), R10
20476 MOVL $0xfffb001d, (AX)
20477 MOVB $0xff, 4(AX)
20478 ADDQ $0x05, AX
20479 JMP emit_repeat_again_lz4_s2_emit_copy_short_2b
20480
20481repeat_five_lz4_s2_emit_copy_short_2b:
20482 LEAL -65536(R10), R10
20483 MOVL R10, R9
20484 MOVW $0x001d, (AX)
20485 MOVW R10, 2(AX)
20486 SARL $0x10, R9
20487 MOVB R9, 4(AX)
20488 ADDQ $0x05, AX
20489 JMP lz4s_s2_loop
20490
20491repeat_four_lz4_s2_emit_copy_short_2b:
20492 LEAL -256(R10), R10
20493 MOVW $0x0019, (AX)
20494 MOVW R10, 2(AX)
20495 ADDQ $0x04, AX
20496 JMP lz4s_s2_loop
20497
20498repeat_three_lz4_s2_emit_copy_short_2b:
20499 LEAL -4(R10), R10
20500 MOVW $0x0015, (AX)
20501 MOVB R10, 2(AX)
20502 ADDQ $0x03, AX
20503 JMP lz4s_s2_loop
20504
20505repeat_two_lz4_s2_emit_copy_short_2b:
20506 SHLL $0x02, R10
20507 ORL $0x01, R10
20508 MOVW R10, (AX)
20509 ADDQ $0x02, AX
20510 JMP lz4s_s2_loop
20511
20512repeat_two_offset_lz4_s2_emit_copy_short_2b:
20513 XORQ R8, R8
20514 LEAL 1(R8)(R10*4), R10
20515 MOVB R9, 1(AX)
20516 SARL $0x08, R9
20517 SHLL $0x05, R9
20518 ORL R9, R10
20519 MOVB R10, (AX)
20520 ADDQ $0x02, AX
20521 JMP lz4s_s2_loop
20522
20523long_offset_short_lz4_s2:
20524 MOVB $0xee, (AX)
20525 MOVW R9, 1(AX)
20526 LEAL -60(R10), R10
20527 ADDQ $0x03, AX
20528
20529 // emitRepeat
20530emit_repeat_again_lz4_s2_emit_copy_short:
20531 MOVL R10, R8
20532 LEAL -4(R10), R10
20533 CMPL R8, $0x08
20534 JBE repeat_two_lz4_s2_emit_copy_short
20535 CMPL R8, $0x0c
20536 JAE cant_repeat_two_offset_lz4_s2_emit_copy_short
20537 CMPL R9, $0x00000800
20538 JB repeat_two_offset_lz4_s2_emit_copy_short
20539
20540cant_repeat_two_offset_lz4_s2_emit_copy_short:
20541 CMPL R10, $0x00000104
20542 JB repeat_three_lz4_s2_emit_copy_short
20543 CMPL R10, $0x00010100
20544 JB repeat_four_lz4_s2_emit_copy_short
20545 CMPL R10, $0x0100ffff
20546 JB repeat_five_lz4_s2_emit_copy_short
20547 LEAL -16842747(R10), R10
20548 MOVL $0xfffb001d, (AX)
20549 MOVB $0xff, 4(AX)
20550 ADDQ $0x05, AX
20551 JMP emit_repeat_again_lz4_s2_emit_copy_short
20552
20553repeat_five_lz4_s2_emit_copy_short:
20554 LEAL -65536(R10), R10
20555 MOVL R10, R9
20556 MOVW $0x001d, (AX)
20557 MOVW R10, 2(AX)
20558 SARL $0x10, R9
20559 MOVB R9, 4(AX)
20560 ADDQ $0x05, AX
20561 JMP lz4s_s2_loop
20562
20563repeat_four_lz4_s2_emit_copy_short:
20564 LEAL -256(R10), R10
20565 MOVW $0x0019, (AX)
20566 MOVW R10, 2(AX)
20567 ADDQ $0x04, AX
20568 JMP lz4s_s2_loop
20569
20570repeat_three_lz4_s2_emit_copy_short:
20571 LEAL -4(R10), R10
20572 MOVW $0x0015, (AX)
20573 MOVB R10, 2(AX)
20574 ADDQ $0x03, AX
20575 JMP lz4s_s2_loop
20576
20577repeat_two_lz4_s2_emit_copy_short:
20578 SHLL $0x02, R10
20579 ORL $0x01, R10
20580 MOVW R10, (AX)
20581 ADDQ $0x02, AX
20582 JMP lz4s_s2_loop
20583
20584repeat_two_offset_lz4_s2_emit_copy_short:
20585 XORQ R8, R8
20586 LEAL 1(R8)(R10*4), R10
20587 MOVB R9, 1(AX)
20588 SARL $0x08, R9
20589 SHLL $0x05, R9
20590 ORL R9, R10
20591 MOVB R10, (AX)
20592 ADDQ $0x02, AX
20593 JMP lz4s_s2_loop
20594
20595two_byte_offset_short_lz4_s2:
20596 MOVL R10, R8
20597 SHLL $0x02, R8
20598 CMPL R10, $0x0c
20599 JAE emit_copy_three_lz4_s2
20600 CMPL R9, $0x00000800
20601 JAE emit_copy_three_lz4_s2
20602 LEAL -15(R8), R8
20603 MOVB R9, 1(AX)
20604 SHRL $0x08, R9
20605 SHLL $0x05, R9
20606 ORL R9, R8
20607 MOVB R8, (AX)
20608 ADDQ $0x02, AX
20609 JMP lz4s_s2_loop
20610
20611emit_copy_three_lz4_s2:
20612 LEAL -2(R8), R8
20613 MOVB R8, (AX)
20614 MOVW R9, 1(AX)
20615 ADDQ $0x03, AX
20616 JMP lz4s_s2_loop
20617
20618lz4s_s2_done:
20619 MOVQ dst_base+0(FP), CX
20620 SUBQ CX, AX
20621 MOVQ SI, uncompressed+48(FP)
20622 MOVQ AX, dstUsed+56(FP)
20623 RET
20624
20625lz4s_s2_corrupt:
20626 XORQ AX, AX
20627 LEAQ -1(AX), SI
20628 MOVQ SI, uncompressed+48(FP)
20629 RET
20630
20631lz4s_s2_dstfull:
20632 XORQ AX, AX
20633 LEAQ -2(AX), SI
20634 MOVQ SI, uncompressed+48(FP)
20635 RET
20636
20637// func cvtLZ4BlockSnappyAsm(dst []byte, src []byte) (uncompressed int, dstUsed int)
20638// Requires: SSE2
20639TEXT ·cvtLZ4BlockSnappyAsm(SB), NOSPLIT, $0-64
20640 XORQ SI, SI
20641 MOVQ dst_base+0(FP), AX
20642 MOVQ dst_len+8(FP), CX
20643 MOVQ src_base+24(FP), DX
20644 MOVQ src_len+32(FP), BX
20645 LEAQ (DX)(BX*1), BX
20646 LEAQ -10(AX)(CX*1), CX
20647
20648lz4_snappy_loop:
20649 CMPQ DX, BX
20650 JAE lz4_snappy_corrupt
20651 CMPQ AX, CX
20652 JAE lz4_snappy_dstfull
20653 MOVBQZX (DX), DI
20654 MOVQ DI, R8
20655 MOVQ DI, R9
20656 SHRQ $0x04, R8
20657 ANDQ $0x0f, R9
20658 CMPQ DI, $0xf0
20659 JB lz4_snappy_ll_end
20660
20661lz4_snappy_ll_loop:
20662 INCQ DX
20663 CMPQ DX, BX
20664 JAE lz4_snappy_corrupt
20665 MOVBQZX (DX), DI
20666 ADDQ DI, R8
20667 CMPQ DI, $0xff
20668 JEQ lz4_snappy_ll_loop
20669
20670lz4_snappy_ll_end:
20671 LEAQ (DX)(R8*1), DI
20672 ADDQ $0x04, R9
20673 CMPQ DI, BX
20674 JAE lz4_snappy_corrupt
20675 INCQ DX
20676 INCQ DI
20677 TESTQ R8, R8
20678 JZ lz4_snappy_lits_done
20679 LEAQ (AX)(R8*1), R10
20680 CMPQ R10, CX
20681 JAE lz4_snappy_dstfull
20682 ADDQ R8, SI
20683 LEAL -1(R8), R10
20684 CMPL R10, $0x3c
20685 JB one_byte_lz4_snappy
20686 CMPL R10, $0x00000100
20687 JB two_bytes_lz4_snappy
20688 CMPL R10, $0x00010000
20689 JB three_bytes_lz4_snappy
20690 CMPL R10, $0x01000000
20691 JB four_bytes_lz4_snappy
20692 MOVB $0xfc, (AX)
20693 MOVL R10, 1(AX)
20694 ADDQ $0x05, AX
20695 JMP memmove_long_lz4_snappy
20696
20697four_bytes_lz4_snappy:
20698 MOVL R10, R11
20699 SHRL $0x10, R11
20700 MOVB $0xf8, (AX)
20701 MOVW R10, 1(AX)
20702 MOVB R11, 3(AX)
20703 ADDQ $0x04, AX
20704 JMP memmove_long_lz4_snappy
20705
20706three_bytes_lz4_snappy:
20707 MOVB $0xf4, (AX)
20708 MOVW R10, 1(AX)
20709 ADDQ $0x03, AX
20710 JMP memmove_long_lz4_snappy
20711
20712two_bytes_lz4_snappy:
20713 MOVB $0xf0, (AX)
20714 MOVB R10, 1(AX)
20715 ADDQ $0x02, AX
20716 CMPL R10, $0x40
20717 JB memmove_lz4_snappy
20718 JMP memmove_long_lz4_snappy
20719
20720one_byte_lz4_snappy:
20721 SHLB $0x02, R10
20722 MOVB R10, (AX)
20723 ADDQ $0x01, AX
20724
20725memmove_lz4_snappy:
20726 LEAQ (AX)(R8*1), R10
20727
20728 // genMemMoveShort
20729 CMPQ R8, $0x08
20730 JBE emit_lit_memmove_lz4_snappy_memmove_move_8
20731 CMPQ R8, $0x10
20732 JBE emit_lit_memmove_lz4_snappy_memmove_move_8through16
20733 CMPQ R8, $0x20
20734 JBE emit_lit_memmove_lz4_snappy_memmove_move_17through32
20735 JMP emit_lit_memmove_lz4_snappy_memmove_move_33through64
20736
20737emit_lit_memmove_lz4_snappy_memmove_move_8:
20738 MOVQ (DX), R11
20739 MOVQ R11, (AX)
20740 JMP memmove_end_copy_lz4_snappy
20741
20742emit_lit_memmove_lz4_snappy_memmove_move_8through16:
20743 MOVQ (DX), R11
20744 MOVQ -8(DX)(R8*1), DX
20745 MOVQ R11, (AX)
20746 MOVQ DX, -8(AX)(R8*1)
20747 JMP memmove_end_copy_lz4_snappy
20748
20749emit_lit_memmove_lz4_snappy_memmove_move_17through32:
20750 MOVOU (DX), X0
20751 MOVOU -16(DX)(R8*1), X1
20752 MOVOU X0, (AX)
20753 MOVOU X1, -16(AX)(R8*1)
20754 JMP memmove_end_copy_lz4_snappy
20755
20756emit_lit_memmove_lz4_snappy_memmove_move_33through64:
20757 MOVOU (DX), X0
20758 MOVOU 16(DX), X1
20759 MOVOU -32(DX)(R8*1), X2
20760 MOVOU -16(DX)(R8*1), X3
20761 MOVOU X0, (AX)
20762 MOVOU X1, 16(AX)
20763 MOVOU X2, -32(AX)(R8*1)
20764 MOVOU X3, -16(AX)(R8*1)
20765
20766memmove_end_copy_lz4_snappy:
20767 MOVQ R10, AX
20768 JMP lz4_snappy_lits_emit_done
20769
20770memmove_long_lz4_snappy:
20771 LEAQ (AX)(R8*1), R10
20772
20773 // genMemMoveLong
20774 MOVOU (DX), X0
20775 MOVOU 16(DX), X1
20776 MOVOU -32(DX)(R8*1), X2
20777 MOVOU -16(DX)(R8*1), X3
20778 MOVQ R8, R12
20779 SHRQ $0x05, R12
20780 MOVQ AX, R11
20781 ANDL $0x0000001f, R11
20782 MOVQ $0x00000040, R13
20783 SUBQ R11, R13
20784 DECQ R12
20785 JA emit_lit_memmove_long_lz4_snappylarge_forward_sse_loop_32
20786 LEAQ -32(DX)(R13*1), R11
20787 LEAQ -32(AX)(R13*1), R14
20788
20789emit_lit_memmove_long_lz4_snappylarge_big_loop_back:
20790 MOVOU (R11), X4
20791 MOVOU 16(R11), X5
20792 MOVOA X4, (R14)
20793 MOVOA X5, 16(R14)
20794 ADDQ $0x20, R14
20795 ADDQ $0x20, R11
20796 ADDQ $0x20, R13
20797 DECQ R12
20798 JNA emit_lit_memmove_long_lz4_snappylarge_big_loop_back
20799
20800emit_lit_memmove_long_lz4_snappylarge_forward_sse_loop_32:
20801 MOVOU -32(DX)(R13*1), X4
20802 MOVOU -16(DX)(R13*1), X5
20803 MOVOA X4, -32(AX)(R13*1)
20804 MOVOA X5, -16(AX)(R13*1)
20805 ADDQ $0x20, R13
20806 CMPQ R8, R13
20807 JAE emit_lit_memmove_long_lz4_snappylarge_forward_sse_loop_32
20808 MOVOU X0, (AX)
20809 MOVOU X1, 16(AX)
20810 MOVOU X2, -32(AX)(R8*1)
20811 MOVOU X3, -16(AX)(R8*1)
20812 MOVQ R10, AX
20813
20814lz4_snappy_lits_emit_done:
20815 MOVQ DI, DX
20816
20817lz4_snappy_lits_done:
20818 CMPQ DX, BX
20819 JNE lz4_snappy_match
20820 CMPQ R9, $0x04
20821 JEQ lz4_snappy_done
20822 JMP lz4_snappy_corrupt
20823
20824lz4_snappy_match:
20825 LEAQ 2(DX), DI
20826 CMPQ DI, BX
20827 JAE lz4_snappy_corrupt
20828 MOVWQZX (DX), R8
20829 MOVQ DI, DX
20830 TESTQ R8, R8
20831 JZ lz4_snappy_corrupt
20832 CMPQ R8, SI
20833 JA lz4_snappy_corrupt
20834 CMPQ R9, $0x13
20835 JNE lz4_snappy_ml_done
20836
20837lz4_snappy_ml_loop:
20838 MOVBQZX (DX), DI
20839 INCQ DX
20840 ADDQ DI, R9
20841 CMPQ DX, BX
20842 JAE lz4_snappy_corrupt
20843 CMPQ DI, $0xff
20844 JEQ lz4_snappy_ml_loop
20845
20846lz4_snappy_ml_done:
20847 ADDQ R9, SI
20848
20849 // emitCopy
20850two_byte_offset_lz4_s2:
20851 CMPL R9, $0x40
20852 JBE two_byte_offset_short_lz4_s2
20853 MOVB $0xee, (AX)
20854 MOVW R8, 1(AX)
20855 LEAL -60(R9), R9
20856 ADDQ $0x03, AX
20857 CMPQ AX, CX
20858 JAE lz4_snappy_loop
20859 JMP two_byte_offset_lz4_s2
20860
20861two_byte_offset_short_lz4_s2:
20862 MOVL R9, DI
20863 SHLL $0x02, DI
20864 CMPL R9, $0x0c
20865 JAE emit_copy_three_lz4_s2
20866 CMPL R8, $0x00000800
20867 JAE emit_copy_three_lz4_s2
20868 LEAL -15(DI), DI
20869 MOVB R8, 1(AX)
20870 SHRL $0x08, R8
20871 SHLL $0x05, R8
20872 ORL R8, DI
20873 MOVB DI, (AX)
20874 ADDQ $0x02, AX
20875 JMP lz4_snappy_loop
20876
20877emit_copy_three_lz4_s2:
20878 LEAL -2(DI), DI
20879 MOVB DI, (AX)
20880 MOVW R8, 1(AX)
20881 ADDQ $0x03, AX
20882 JMP lz4_snappy_loop
20883
20884lz4_snappy_done:
20885 MOVQ dst_base+0(FP), CX
20886 SUBQ CX, AX
20887 MOVQ SI, uncompressed+48(FP)
20888 MOVQ AX, dstUsed+56(FP)
20889 RET
20890
20891lz4_snappy_corrupt:
20892 XORQ AX, AX
20893 LEAQ -1(AX), SI
20894 MOVQ SI, uncompressed+48(FP)
20895 RET
20896
20897lz4_snappy_dstfull:
20898 XORQ AX, AX
20899 LEAQ -2(AX), SI
20900 MOVQ SI, uncompressed+48(FP)
20901 RET
20902
20903// func cvtLZ4sBlockSnappyAsm(dst []byte, src []byte) (uncompressed int, dstUsed int)
20904// Requires: SSE2
20905TEXT ·cvtLZ4sBlockSnappyAsm(SB), NOSPLIT, $0-64
20906 XORQ SI, SI
20907 MOVQ dst_base+0(FP), AX
20908 MOVQ dst_len+8(FP), CX
20909 MOVQ src_base+24(FP), DX
20910 MOVQ src_len+32(FP), BX
20911 LEAQ (DX)(BX*1), BX
20912 LEAQ -10(AX)(CX*1), CX
20913
20914lz4s_snappy_loop:
20915 CMPQ DX, BX
20916 JAE lz4s_snappy_corrupt
20917 CMPQ AX, CX
20918 JAE lz4s_snappy_dstfull
20919 MOVBQZX (DX), DI
20920 MOVQ DI, R8
20921 MOVQ DI, R9
20922 SHRQ $0x04, R8
20923 ANDQ $0x0f, R9
20924 CMPQ DI, $0xf0
20925 JB lz4s_snappy_ll_end
20926
20927lz4s_snappy_ll_loop:
20928 INCQ DX
20929 CMPQ DX, BX
20930 JAE lz4s_snappy_corrupt
20931 MOVBQZX (DX), DI
20932 ADDQ DI, R8
20933 CMPQ DI, $0xff
20934 JEQ lz4s_snappy_ll_loop
20935
20936lz4s_snappy_ll_end:
20937 LEAQ (DX)(R8*1), DI
20938 ADDQ $0x03, R9
20939 CMPQ DI, BX
20940 JAE lz4s_snappy_corrupt
20941 INCQ DX
20942 INCQ DI
20943 TESTQ R8, R8
20944 JZ lz4s_snappy_lits_done
20945 LEAQ (AX)(R8*1), R10
20946 CMPQ R10, CX
20947 JAE lz4s_snappy_dstfull
20948 ADDQ R8, SI
20949 LEAL -1(R8), R10
20950 CMPL R10, $0x3c
20951 JB one_byte_lz4s_snappy
20952 CMPL R10, $0x00000100
20953 JB two_bytes_lz4s_snappy
20954 CMPL R10, $0x00010000
20955 JB three_bytes_lz4s_snappy
20956 CMPL R10, $0x01000000
20957 JB four_bytes_lz4s_snappy
20958 MOVB $0xfc, (AX)
20959 MOVL R10, 1(AX)
20960 ADDQ $0x05, AX
20961 JMP memmove_long_lz4s_snappy
20962
20963four_bytes_lz4s_snappy:
20964 MOVL R10, R11
20965 SHRL $0x10, R11
20966 MOVB $0xf8, (AX)
20967 MOVW R10, 1(AX)
20968 MOVB R11, 3(AX)
20969 ADDQ $0x04, AX
20970 JMP memmove_long_lz4s_snappy
20971
20972three_bytes_lz4s_snappy:
20973 MOVB $0xf4, (AX)
20974 MOVW R10, 1(AX)
20975 ADDQ $0x03, AX
20976 JMP memmove_long_lz4s_snappy
20977
20978two_bytes_lz4s_snappy:
20979 MOVB $0xf0, (AX)
20980 MOVB R10, 1(AX)
20981 ADDQ $0x02, AX
20982 CMPL R10, $0x40
20983 JB memmove_lz4s_snappy
20984 JMP memmove_long_lz4s_snappy
20985
20986one_byte_lz4s_snappy:
20987 SHLB $0x02, R10
20988 MOVB R10, (AX)
20989 ADDQ $0x01, AX
20990
20991memmove_lz4s_snappy:
20992 LEAQ (AX)(R8*1), R10
20993
20994 // genMemMoveShort
20995 CMPQ R8, $0x08
20996 JBE emit_lit_memmove_lz4s_snappy_memmove_move_8
20997 CMPQ R8, $0x10
20998 JBE emit_lit_memmove_lz4s_snappy_memmove_move_8through16
20999 CMPQ R8, $0x20
21000 JBE emit_lit_memmove_lz4s_snappy_memmove_move_17through32
21001 JMP emit_lit_memmove_lz4s_snappy_memmove_move_33through64
21002
21003emit_lit_memmove_lz4s_snappy_memmove_move_8:
21004 MOVQ (DX), R11
21005 MOVQ R11, (AX)
21006 JMP memmove_end_copy_lz4s_snappy
21007
21008emit_lit_memmove_lz4s_snappy_memmove_move_8through16:
21009 MOVQ (DX), R11
21010 MOVQ -8(DX)(R8*1), DX
21011 MOVQ R11, (AX)
21012 MOVQ DX, -8(AX)(R8*1)
21013 JMP memmove_end_copy_lz4s_snappy
21014
21015emit_lit_memmove_lz4s_snappy_memmove_move_17through32:
21016 MOVOU (DX), X0
21017 MOVOU -16(DX)(R8*1), X1
21018 MOVOU X0, (AX)
21019 MOVOU X1, -16(AX)(R8*1)
21020 JMP memmove_end_copy_lz4s_snappy
21021
21022emit_lit_memmove_lz4s_snappy_memmove_move_33through64:
21023 MOVOU (DX), X0
21024 MOVOU 16(DX), X1
21025 MOVOU -32(DX)(R8*1), X2
21026 MOVOU -16(DX)(R8*1), X3
21027 MOVOU X0, (AX)
21028 MOVOU X1, 16(AX)
21029 MOVOU X2, -32(AX)(R8*1)
21030 MOVOU X3, -16(AX)(R8*1)
21031
21032memmove_end_copy_lz4s_snappy:
21033 MOVQ R10, AX
21034 JMP lz4s_snappy_lits_emit_done
21035
21036memmove_long_lz4s_snappy:
21037 LEAQ (AX)(R8*1), R10
21038
21039 // genMemMoveLong
21040 MOVOU (DX), X0
21041 MOVOU 16(DX), X1
21042 MOVOU -32(DX)(R8*1), X2
21043 MOVOU -16(DX)(R8*1), X3
21044 MOVQ R8, R12
21045 SHRQ $0x05, R12
21046 MOVQ AX, R11
21047 ANDL $0x0000001f, R11
21048 MOVQ $0x00000040, R13
21049 SUBQ R11, R13
21050 DECQ R12
21051 JA emit_lit_memmove_long_lz4s_snappylarge_forward_sse_loop_32
21052 LEAQ -32(DX)(R13*1), R11
21053 LEAQ -32(AX)(R13*1), R14
21054
21055emit_lit_memmove_long_lz4s_snappylarge_big_loop_back:
21056 MOVOU (R11), X4
21057 MOVOU 16(R11), X5
21058 MOVOA X4, (R14)
21059 MOVOA X5, 16(R14)
21060 ADDQ $0x20, R14
21061 ADDQ $0x20, R11
21062 ADDQ $0x20, R13
21063 DECQ R12
21064 JNA emit_lit_memmove_long_lz4s_snappylarge_big_loop_back
21065
21066emit_lit_memmove_long_lz4s_snappylarge_forward_sse_loop_32:
21067 MOVOU -32(DX)(R13*1), X4
21068 MOVOU -16(DX)(R13*1), X5
21069 MOVOA X4, -32(AX)(R13*1)
21070 MOVOA X5, -16(AX)(R13*1)
21071 ADDQ $0x20, R13
21072 CMPQ R8, R13
21073 JAE emit_lit_memmove_long_lz4s_snappylarge_forward_sse_loop_32
21074 MOVOU X0, (AX)
21075 MOVOU X1, 16(AX)
21076 MOVOU X2, -32(AX)(R8*1)
21077 MOVOU X3, -16(AX)(R8*1)
21078 MOVQ R10, AX
21079
21080lz4s_snappy_lits_emit_done:
21081 MOVQ DI, DX
21082
21083lz4s_snappy_lits_done:
21084 CMPQ DX, BX
21085 JNE lz4s_snappy_match
21086 CMPQ R9, $0x03
21087 JEQ lz4s_snappy_done
21088 JMP lz4s_snappy_corrupt
21089
21090lz4s_snappy_match:
21091 CMPQ R9, $0x03
21092 JEQ lz4s_snappy_loop
21093 LEAQ 2(DX), DI
21094 CMPQ DI, BX
21095 JAE lz4s_snappy_corrupt
21096 MOVWQZX (DX), R8
21097 MOVQ DI, DX
21098 TESTQ R8, R8
21099 JZ lz4s_snappy_corrupt
21100 CMPQ R8, SI
21101 JA lz4s_snappy_corrupt
21102 CMPQ R9, $0x12
21103 JNE lz4s_snappy_ml_done
21104
21105lz4s_snappy_ml_loop:
21106 MOVBQZX (DX), DI
21107 INCQ DX
21108 ADDQ DI, R9
21109 CMPQ DX, BX
21110 JAE lz4s_snappy_corrupt
21111 CMPQ DI, $0xff
21112 JEQ lz4s_snappy_ml_loop
21113
21114lz4s_snappy_ml_done:
21115 ADDQ R9, SI
21116
21117 // emitCopy
21118two_byte_offset_lz4_s2:
21119 CMPL R9, $0x40
21120 JBE two_byte_offset_short_lz4_s2
21121 MOVB $0xee, (AX)
21122 MOVW R8, 1(AX)
21123 LEAL -60(R9), R9
21124 ADDQ $0x03, AX
21125 CMPQ AX, CX
21126 JAE lz4s_snappy_loop
21127 JMP two_byte_offset_lz4_s2
21128
21129two_byte_offset_short_lz4_s2:
21130 MOVL R9, DI
21131 SHLL $0x02, DI
21132 CMPL R9, $0x0c
21133 JAE emit_copy_three_lz4_s2
21134 CMPL R8, $0x00000800
21135 JAE emit_copy_three_lz4_s2
21136 LEAL -15(DI), DI
21137 MOVB R8, 1(AX)
21138 SHRL $0x08, R8
21139 SHLL $0x05, R8
21140 ORL R8, DI
21141 MOVB DI, (AX)
21142 ADDQ $0x02, AX
21143 JMP lz4s_snappy_loop
21144
21145emit_copy_three_lz4_s2:
21146 LEAL -2(DI), DI
21147 MOVB DI, (AX)
21148 MOVW R8, 1(AX)
21149 ADDQ $0x03, AX
21150 JMP lz4s_snappy_loop
21151
21152lz4s_snappy_done:
21153 MOVQ dst_base+0(FP), CX
21154 SUBQ CX, AX
21155 MOVQ SI, uncompressed+48(FP)
21156 MOVQ AX, dstUsed+56(FP)
21157 RET
21158
21159lz4s_snappy_corrupt:
21160 XORQ AX, AX
21161 LEAQ -1(AX), SI
21162 MOVQ SI, uncompressed+48(FP)
21163 RET
21164
21165lz4s_snappy_dstfull:
21166 XORQ AX, AX
21167 LEAQ -2(AX), SI
21168 MOVQ SI, uncompressed+48(FP)
21169 RET
generated by cgit v1.2.3 (git 2.49.0) at 2025-10-28 23:41:01 +0000