Frank Barchard 3a15bd4e46 [libyuv] Optimize RotatePlane_16 SIMD and compact 32-bit transposes ... Implement SIMD 16-bit plane rotation (TransposePlane_16, RotatePlane90_16, RotatePlane180_16, RotatePlane270_16) used by I010Rotate, I210Rotate, and I410Rotate, keeping tile sizes compact with full-register writes and zero cross-lane shuffles: - AVX2: 8x16 tile in ymm0..ymm15 with _Any tail (low-end x86 SIMD) - AVX-512BW: 8x32 tile in zmm0..zmm15 with k1/k2 right/bottom masks - NEON (ARM64/ARM32): 8x16 tile in v0..v23 / q0..q11 with _Any tail - SME: 8xVL tile using ZA16 horizontal/vertical array slices - RVV: 8xVL tile using widening unpacks with hardware vl tail - WASM SIMD: 8x8 tile in v128 with _Any tail Also update 32-bit ARGBRotate x86 transposes to compact vertical in-lane tiles with full-register writes and zero cross-lane shuffles: - TransposeWxH_32_AVX2: 4x8 tile in ymm0..ymm7 with vpmaskmovd tails - TransposeWxH_32_AVX512BW: 4x16 tile in zmm0..zmm7 with k1/k2 tails Add RotatePlane16_SplitMergeUV_Opt and RotatePlane16_SplitMergeUV_Odd unit tests comparing 16-bit rotation against SplitUVPlane + RotatePlane + MergeUVPlane across 0/90/180/270 degrees. Performance on 1275x1650 (1000 iterations, before -> after): CPU 90 degree 180 degree Coral RVV (Verilator) 7306 -> 1415c (5.16x) 2274 -> 719c (3.16x) AMD Rome (Zen 2) 821 -> 215ms (3.82x) 259 -> 181ms (1.44x) AMD Genoa (Zen 4) 483 -> 129ms (3.73x) 149 -> 111ms (1.34x) AMD Turin (Zen 5) 321 -> 101ms (3.18x) 109 -> 78ms (1.40x) AMD Milan (Zen 3) 505 -> 189ms (2.67x) 199 -> 118ms (1.69x) Intel Skylake-X 1076 -> 447ms (2.41x) 353 -> 317ms (1.11x) WASM SIMD (d8) 415 -> 203ms (2.04x) 370 -> 106ms (3.49x) Intel Emerald Rapids 735 -> 422ms (1.74x) 238 -> 233ms (1.02x) Intel Haswell 1120 -> 648ms (1.73x) 438 -> 393ms (1.11x) Intel Ice Lake 774 -> 474ms (1.63x) 279 -> 290ms (0.96x) ARM Neoverse-N1 864 -> 544ms (1.59x) 404 -> 266ms (1.52x) Ampere Siryn 862 -> 576ms (1.50x) 568 -> 329ms (1.72x) Google Axion (Maple) 554 -> 379ms (1.46x) 199 -> 142ms (1.41x) Intel Sapphire Rapids 1126 -> 772ms (1.46x) 301 -> 288ms (1.04x) Intel Granite Rapids 730 -> 565ms (1.29x) 280 -> 280ms (1.00x) NVIDIA Grace 462 -> 365ms (1.26x) 192 -> 126ms (1.52x) ARM Cortex-A53 28290 -> 24386ms (1.16x) 7178 -> 5075ms (1.41x) Google Axion 2 (Tamar) 523 -> 453ms (1.15x) 217 -> 112ms (1.93x) Test: libyuv_unittest --gtest_filter=*Rotate* Bug: b/42280942 Change-Id: I91ba6cac22185b5d294fcb98344fdb8a23cc94ff		2026-10-12 04:12:23 -07:00
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libyuv	[libyuv] Optimize RotatePlane_16 SIMD and compact 32-bit transposes	2026-10-12 04:12:23 -07:00
libyuv.h	libyuv.h: Add scale_rgb.h and remove scale_row.h	2026-08-26 19:06:22 -07:00