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add box scaling avx2 optimization for gcc

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TBR=harryjin@google.com
BUG=libyuv:492

Review URL: https://codereview.chromium.org/1392803002 .
This commit is contained in:
Frank Barchard 2015-10-06 20:01:02 -07:00
parent f00bc9ef46
commit 68fa59c873
1 changed files with 31 additions and 0 deletions
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31
source/scale_gcc.cc
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@ -603,6 +603,37 @@ void ScaleAddRow_SSE2(const uint8* src_ptr, uint16* dst_ptr, int src_width) {
);
}
#ifdef HAS_SCALEADDROW_AVX2
// Reads 32 bytes and accumulates to 32 shorts at a time.
void ScaleAddRow_AVX2(const uint8* src_ptr, uint16* dst_ptr, int src_width) {
asm volatile (
"vpxor %%xmm5,%%xmm5 \n"
LABELALIGN
"1: \n"
"vmovdqu " MEMACCESS(0) ",%%ymm3 \n"
"lea " MEMLEA(0x20,0) ",%0 \n" // src_ptr += 16
"vpermq $0xd8,%%ymm3,%%ymm3 \n"
"vpunpcklbw %%ymm5,%%ymm3,%%ymm2 \n"
"vpunpckhbw %%ymm5,%%ymm3,%%ymm3 \n"
"vpaddusw " MEMACCESS(1) ",%%ymm2,%%ymm0 \n"
"vpaddusw " MEMACCESS2(0x10,1) ",%%ymm3,%%ymm1 \n"
"vmovdqu %%ymm0," MEMACCESS(1) " \n"
"vmovdqu %%ymm1," MEMACCESS2(0x10,1) " \n"
"lea " MEMLEA(0x40,1) ",%1 \n"
"sub $0x20,%2 \n"
"jg 1b \n"
"vzeroupper \n"
: "+r"(src_ptr), // %0
"+r"(dst_ptr), // %1
"+r"(src_width) // %2
:
: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
);
}
#endif // HAS_SCALEADDROW_AVX2
// Bilinear column filtering. SSSE3 version.
void ScaleFilterCols_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {