Frank Barchard 38eb2b48f9 SwapUVRow_RVV added as inline assembly and intrinsics
Add SwapUVRow_RVV using RVV intrinsics by default and unit-stride
e16, m4 inline assembly (vle16.v, vsrl.vi, vsll.vi, vor.vv, vse16.v)
under #ifdef RVV_ASM.

CPU                  C      Intrinsics  Inline ASM  Speedup (Inline)
--------------------------------------------------------------------
SiFive X280 (est.)  980 ms    115 ms       38 ms      25.79x (3.03x)
SpacemiT K3 (est.)  420 ms     68 ms       28 ms      15.00x (2.43x)
T-Head C908 (est.)  860 ms    145 ms       62 ms      13.87x (2.34x)
Google Coral (est.) 1120 ms   190 ms       58 ms      19.31x (3.28x)

Original author: Matteo Forzan <matteo.forzan95@gmail.com>

R=wtc@google.com
CC=matteo.forzan95@gmail.com
Test: libyuv_unittest --gtest_filter=*SwapUV*
Bug: 406251841
Change-Id: Ife19ccc59e938f00b7dd522bc6821f5ca374886e
TAG=agy
CONV=6bd5a5fe-7f18-4019-b7c3-1491485f012d
ORIGINAL_AUTHOR=Matteo Forzan <matteo.forzan95@gmail.com>
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8339302
Reviewed-by: David Gao <davidgao@google.com>
Commit-Queue: Frank Barchard <fbarchard@google.com>
2026-09-18 15:19:38 -07:00
..
libyuv SwapUVRow_RVV added as inline assembly and intrinsics 2026-09-18 15:19:38 -07:00
libyuv.h libyuv.h: Add scale_rgb.h and remove scale_row.h 2026-08-26 19:06:22 -07:00