Frank Barchard 7c85a3a082 RVV port to inline from intrinsics ... - avoids intrinsics API changes - build options for rvv not needed for inline instructions - declare vl and vtype clobbers instead of cc - tune for SiFive X280 using 16/32-bit loads and stores instead of vlseg/vsseg where more efficient - tune LMUL for SpacemiT K3 (256-bit vectors) with max m4 (m2 where constrained by register pressure or vlseg/vsseg field rules) - YUVTORGB use vmulhu NV12ToARGB performance estimates: CPU VLEN C Intrinsics Inline ASM Speedup (Inline) ------------------------------------------------------------------------ SiFive X390 1024-bit 360 ms 29 ms 9.5 ms 37.89x (3.05x) SiFive X280 512-bit 980 ms 115 ms 38.0 ms 25.79x (3.03x) SpacemiT K3 256-bit 420 ms 68 ms 28.0 ms 15.00x (2.43x) Google Coral 256-bit 1120 ms 190 ms 58.0 ms 19.31x (3.28x) T-Head C920 128-bit 510 ms 88 ms 39.0 ms 13.08x (2.26x) T-Head C908 128-bit 860 ms 145 ms 62.0 ms 13.87x (2.34x) Bug: b/443984359 Change-Id: If4097b99ced4cc2306f12236b8605994e713eecd Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8426529 Reviewed-by: richard winterton <rrwinterton@gmail.com> Commit-Queue: Frank Barchard <fbarchard@google.com>		2026-09-21 14:26:26 -07:00
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libyuv	RVV port to inline from intrinsics	2026-09-21 14:26:26 -07:00
libyuv.h	libyuv.h: Add scale_rgb.h and remove scale_row.h	2026-08-26 19:06:22 -07:00