diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/zstd/matchlen_amd64.s')
| -rw-r--r-- | vendor/github.com/klauspost/compress/zstd/matchlen_amd64.s | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/vendor/github.com/klauspost/compress/zstd/matchlen_amd64.s b/vendor/github.com/klauspost/compress/zstd/matchlen_amd64.s deleted file mode 100644 index 0782b86e3..000000000 --- a/vendor/github.com/klauspost/compress/zstd/matchlen_amd64.s +++ /dev/null @@ -1,66 +0,0 @@ -// Copied from S2 implementation. - -//go:build !appengine && !noasm && gc && !noasm - -#include "textflag.h" - -// func matchLen(a []byte, b []byte) int -TEXT ·matchLen(SB), NOSPLIT, $0-56 - MOVQ a_base+0(FP), AX - MOVQ b_base+24(FP), CX - MOVQ a_len+8(FP), DX - - // matchLen - XORL SI, SI - CMPL DX, $0x08 - JB matchlen_match4_standalone - -matchlen_loopback_standalone: - MOVQ (AX)(SI*1), BX - XORQ (CX)(SI*1), BX - JZ matchlen_loop_standalone - -#ifdef GOAMD64_v3 - TZCNTQ BX, BX -#else - BSFQ BX, BX -#endif - SHRL $0x03, BX - LEAL (SI)(BX*1), SI - JMP gen_match_len_end - -matchlen_loop_standalone: - LEAL -8(DX), DX - LEAL 8(SI), SI - CMPL DX, $0x08 - JAE matchlen_loopback_standalone - -matchlen_match4_standalone: - CMPL DX, $0x04 - JB matchlen_match2_standalone - MOVL (AX)(SI*1), BX - CMPL (CX)(SI*1), BX - JNE matchlen_match2_standalone - LEAL -4(DX), DX - LEAL 4(SI), SI - -matchlen_match2_standalone: - CMPL DX, $0x02 - JB matchlen_match1_standalone - MOVW (AX)(SI*1), BX - CMPW (CX)(SI*1), BX - JNE matchlen_match1_standalone - LEAL -2(DX), DX - LEAL 2(SI), SI - -matchlen_match1_standalone: - CMPL DX, $0x01 - JB gen_match_len_end - MOVB (AX)(SI*1), BL - CMPB (CX)(SI*1), BL - JNE gen_match_len_end - INCL SI - -gen_match_len_end: - MOVQ SI, ret+48(FP) - RET |