diff options
Diffstat (limited to 'vendor/github.com/templexxx/xorsimd/xorsse2_amd64.s')
| -rw-r--r-- | vendor/github.com/templexxx/xorsimd/xorsse2_amd64.s | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/vendor/github.com/templexxx/xorsimd/xorsse2_amd64.s b/vendor/github.com/templexxx/xorsimd/xorsse2_amd64.s new file mode 100644 index 0000000..38df948 --- /dev/null +++ b/vendor/github.com/templexxx/xorsimd/xorsse2_amd64.s @@ -0,0 +1,123 @@ +// Copyright (c) 2019. Temple3x (temple3x@gmail.com) +// +// Use of this source code is governed by the MIT License +// that can be found in the LICENSE file. + +#include "textflag.h" + +#define dst BX // parity's address +#define d2src SI // two-dimension src_slice's address +#define csrc CX // cnt of src +#define len DX // len of vect +#define pos R8 // job position in vect + +#define csrc_tmp R9 +#define d2src_off R10 +#define src_tmp R11 +#define not_aligned_len R12 +#define src_val0 R13 +#define src_val1 R14 + +// func encodeSSE2(dst []byte, src [][]byte) +TEXT ·encodeSSE2(SB), NOSPLIT, $0 + MOVQ d+0(FP), dst + MOVQ src+24(FP), d2src + MOVQ c+32(FP), csrc + MOVQ l+8(FP), len + TESTQ $63, len + JNZ not_aligned + +aligned: + MOVQ $0, pos + +loop64b: + MOVQ csrc, csrc_tmp + SUBQ $2, csrc_tmp + MOVQ $0, d2src_off + MOVQ (d2src)(d2src_off*1), src_tmp + MOVOU (src_tmp)(pos*1), X0 + MOVOU 16(src_tmp)(pos*1), X1 + MOVOU 32(src_tmp)(pos*1), X2 + MOVOU 48(src_tmp)(pos*1), X3 + +next_vect: + ADDQ $24, d2src_off + MOVQ (d2src)(d2src_off*1), src_tmp + MOVOU (src_tmp)(pos*1), X4 + MOVOU 16(src_tmp)(pos*1), X5 + MOVOU 32(src_tmp)(pos*1), X6 + MOVOU 48(src_tmp)(pos*1), X7 + PXOR X4, X0 + PXOR X5, X1 + PXOR X6, X2 + PXOR X7, X3 + SUBQ $1, csrc_tmp + JGE next_vect + + MOVOU X0, (dst)(pos*1) + MOVOU X1, 16(dst)(pos*1) + MOVOU X2, 32(dst)(pos*1) + MOVOU X3, 48(dst)(pos*1) + + ADDQ $64, pos + CMPQ len, pos + JNE loop64b + RET + +loop_1b: + MOVQ csrc, csrc_tmp + MOVQ $0, d2src_off + MOVQ (d2src)(d2src_off*1), src_tmp + SUBQ $2, csrc_tmp + MOVB -1(src_tmp)(len*1), src_val0 + +next_vect_1b: + ADDQ $24, d2src_off + MOVQ (d2src)(d2src_off*1), src_tmp + MOVB -1(src_tmp)(len*1), src_val1 + XORB src_val1, src_val0 + SUBQ $1, csrc_tmp + JGE next_vect_1b + + MOVB src_val0, -1(dst)(len*1) + SUBQ $1, len + TESTQ $7, len + JNZ loop_1b + + CMPQ len, $0 + JE ret + TESTQ $63, len + JZ aligned + +not_aligned: + TESTQ $7, len + JNE loop_1b + MOVQ len, not_aligned_len + ANDQ $63, not_aligned_len + +loop_8b: + MOVQ csrc, csrc_tmp + MOVQ $0, d2src_off + MOVQ (d2src)(d2src_off*1), src_tmp + SUBQ $2, csrc_tmp + MOVQ -8(src_tmp)(len*1), src_val0 + +next_vect_8b: + ADDQ $24, d2src_off + MOVQ (d2src)(d2src_off*1), src_tmp + MOVQ -8(src_tmp)(len*1), src_val1 + XORQ src_val1, src_val0 + SUBQ $1, csrc_tmp + JGE next_vect_8b + + MOVQ src_val0, -8(dst)(len*1) + SUBQ $8, len + SUBQ $8, not_aligned_len + JG loop_8b + + CMPQ len, $64 + JGE aligned + RET + +ret: + RET |