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READI422 macro improved for avx512 vpermw

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- speeds up I420ToARGB etc

Granite Rapids
Now
I420ToARGB_Opt (100 ms)
I420ToAR30_Opt (135 ms)
Was
I420ToARGB_Opt (109 ms)
I420ToAR30_Opt (147 ms)

Bug: None
Change-Id: I70b9356dfbd98f28f07bfe9d8a44f0107435a26f
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8265437
Commit-Queue: Frank Barchard <fbarchard@google.com>
Reviewed-by: richard winterton <rrwinterton@gmail.com>
This commit is contained in:
Frank Barchard 2026-08-18 14:34:25 -07:00 committed by libyuv-scoped@luci-project-accounts.iam.gserviceaccount.com
parent 0f36c7f808
commit 210d11f747
1 changed files with 13 additions and 11 deletions
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24
source/row_gcc.cc
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@ -3121,17 +3121,17 @@ void OMITFP I422ToRGBARow_SSSE3(const uint8_t* y_buf,
#define READYUV422_AVX512BW \
"vmovdqu (%[u_buf]),%%xmm3 \n" \
"vmovdqu 0x00(%[u_buf],%[v_buf],1),%%xmm1 \n" \
"vpermq %%zmm3,%%zmm16,%%zmm3 \n" \
"vpermq %%zmm1,%%zmm16,%%zmm1 \n" \
"lea 0x10(%[u_buf]),%[u_buf] \n" \
"vpunpcklbw %%zmm1,%%zmm3,%%zmm3 \n" \
"vpermq $0xd8,%%zmm3,%%zmm3 \n" \
"vpunpcklwd %%zmm3,%%zmm3,%%zmm3 \n" \
"vmovdqu (%[y_buf]),%%ymm4 \n" \
"vpermq %%zmm4,%%zmm17,%%zmm4 \n" \
"vpermq $0xd8,%%zmm4,%%zmm4 \n" \
"vpunpcklbw %%zmm4,%%zmm4,%%zmm4 \n" \
"lea 0x20(%[y_buf]),%[y_buf] \n"
"vpunpcklbw %%xmm1,%%xmm3,%%xmm2 \n" \
"vpunpckhbw %%xmm1,%%xmm3,%%xmm3 \n" \
"vinserti64x2 $1,%%xmm3,%%ymm2,%%ymm3 \n" \
"vmovdqa64 %%zmm16,%%zmm1 \n" \
"vpermi2w %%zmm3,%%zmm3,%%zmm1 \n" \
"vpmovzxbw (%[y_buf]),%%zmm4 \n" \
"lea 0x20(%[y_buf]),%[y_buf] \n" \
"vpsllw $8,%%zmm4,%%zmm3 \n" \
"vpord %%zmm3,%%zmm4,%%zmm4 \n" \
"vmovdqa64 %%zmm1,%%zmm3 \n"
// Read 8 UV from 210, upsample to 16 UV
// TODO(fbarchard): Consider vpshufb to replace pack/unpack
@ -3648,7 +3648,9 @@ void OMITFP I422ToRGB24Row_AVX2(const uint8_t* y_buf,
#endif // HAS_I422TORGB24ROW_AVX2
#if defined(HAS_I422TOARGBROW_AVX512BW)
static const uint64_t kSplitQuadWords[8] = {0, 2, 2, 2, 1, 2, 2, 2};
static const uint16_t kSplitQuadWords[32] = {
0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7,
8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15};
static const uint64_t kSplitDoubleQuadWords[8] = {0, 1, 4, 4, 2, 3, 4, 4};
static const uint64_t kUnpermuteAVX512[8] = {0, 4, 1, 5, 2, 6, 3, 7};