diff options
Diffstat (limited to '1/repair_avx.asm')
| -rw-r--r-- | 1/repair_avx.asm | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/1/repair_avx.asm b/1/repair_avx.asm index 4a268a6..7271138 100644 --- a/1/repair_avx.asm +++ b/1/repair_avx.asm @@ -7,22 +7,18 @@ repair_avx_inner: vmovd xmm1, edi vpbroadcastd ymm1, xmm1 vpsubd ymm1, ymm0, ymm1 -%rep 24 - vpcmpeqd ymm2, ymm1, [rsi] - vpmovmskb edx, ymm2 - test edx, edx +%assign i 0 +%rep 25 + vpcmpeqd ymm2, ymm1, [rsi + i] + vpmovmskb eax, ymm2 + test eax, eax jne .found - add rsi, 32 ; set up to read the next 256 bits (32 bytes) (8 * dword) +%assign i i+32 %endrep - vpcmpeqd ymm2, ymm1, [rsi] - vpmovmskb edx, ymm2 - test edx, edx - jne .found xor eax, eax ; not found, return 0 vzeroupper ; eliminate performance penalties caused by false dependencies when transitioning between AVX and legacy SSE instructions ret .found: - bsf edx, edx - mov eax, dword [rsi + rdx] vzeroupper ; eliminate performance penalties caused by false dependencies when transitioning between AVX and legacy SSE instructions + movd eax, xmm1 ret |