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George Steed d0c28db56c [AArch64] Optimize Merge{ARGB,XRGB}16To8Row_NEON 
Rather than shifting the data into the low half of each lane and then
using a saturating narrowing operation, we can do the saturation as part
of a shift into the highest half of the lane and then use a simpler TRN2
instruction to extract pairs of high halves into full vectors. This also
has the nice advantage of allowing us to use ST2 rather than ST4 for
storing the result, since ST4 is known to be slow on some
micro-architectures.

Reduction in runtimes observed for the two kernels:

             | MergeARGB16To8Row_NEON | MergeXRGB16To8Row_NEON
  Cortex-A55 |                  -8.0% |                 -12.2%
 Cortex-A510 |                 -29.9% |                 -31.4%
  Cortex-A76 |                 -29.0% |                 -32.0%
   Cortex-X2 |                 -33.5% |                 -43.4%

Bug: libyuv:976
Change-Id: I9da3beedc27ab43527b3642aa6d4decf3b5b6683
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5509198
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Justin Green <greenjustin@google.com>
2024-05-21 07:55:03 +00:00
..
compare_common.cc clang-tidy applied 2021-04-01 21:42:47 +00:00
compare_gcc.cc MT2T Warning fixes for fuchsia 2022-12-06 19:54:40 +00:00
compare_msa.cc use unix line endings 2018-06-20 23:19:59 +00:00
compare_neon64.cc [AArch64] Add Neon implementation of HashDjb2 2024-05-01 19:37:31 +00:00
compare_neon.cc Scale by even factor low level row function 2020-11-03 21:25:18 +00:00
compare_win.cc Switch win32 to row_gcc for clangcl. 2021-04-22 19:32:32 +00:00
compare.cc [AArch64] Add Neon implementation of HashDjb2 2024-05-01 19:37:31 +00:00
convert_argb.cc Remove unneeded #ifdef HAVE_JPEG code 2024-05-09 23:02:18 +00:00
convert_from_argb.cc [AArch64] Add Neon implementations for {ARGB,ABGR}ToAR30Row 2024-05-21 07:35:07 +00:00
convert_from.cc Change ScalePlane,ScalePlane_16,... to return int 2023-11-03 23:53:24 +00:00
convert_jpeg.cc PlaneScale, UVScale and ARGBScale test 3x and 4x down sample. 2020-10-28 20:41:59 +00:00
convert_to_argb.cc Remove M420 and refactor NV12ToI420 2020-05-26 18:48:00 +00:00
convert_to_i420.cc Fix ConvertToI420 when using YUY2 or UYVY with odd crop_x. 2021-07-19 22:22:22 +00:00
convert.cc [AArch64] Add SVE2 implementations for ARGBToUVRow and similar 2024-05-01 19:46:43 +00:00
cpu_id.cc [AArch64] Impose feature dependencies in detection code 2024-05-21 07:21:49 +00:00
mjpeg_decoder.cc Add AMXINT8 cpu detect 2024-02-15 21:44:47 +00:00
mjpeg_validate.cc Update to r1732 for more robust jpeg 2019-07-01 22:32:36 +00:00
planar_functions.cc Remove unneeded #ifdef HAVE_JPEG code 2024-05-09 23:02:18 +00:00
rotate_any.cc [AArch64] Use full vectors in TransposeWx{8 => 16}_NEON 2024-05-21 07:46:42 +00:00
rotate_argb.cc malloc return 1 for failures and assert for internal functions 2023-12-04 22:55:20 +00:00
rotate_common.cc [AArch64] Use full vectors in TransposeWx{8 => 16}_NEON 2024-05-21 07:46:42 +00:00
rotate_gcc.cc Transpose 4x4 for SSE2 and AVX2 2023-03-03 17:46:23 +00:00
rotate_lsx.cc [AArch64] Use full vectors in TransposeWx{8 => 16}_NEON 2024-05-21 07:46:42 +00:00
rotate_msa.cc [AArch64] Use full vectors in TransposeWx{8 => 16}_NEON 2024-05-21 07:46:42 +00:00
rotate_neon64.cc [AArch64] Use full vectors in TransposeWx{8 => 16}_NEON 2024-05-21 07:46:42 +00:00
rotate_neon.cc GCC warning fix for MT2T 2023-03-16 06:57:20 +00:00
rotate_win.cc Switch win32 to row_gcc for clangcl. 2021-04-22 19:32:32 +00:00
rotate.cc [AArch64] Use full vectors in TransposeWx{8 => 16}_NEON 2024-05-21 07:46:42 +00:00
row_any.cc [AArch64] Add Neon implementations for {ARGB,ABGR}ToAR30Row 2024-05-21 07:35:07 +00:00
row_common.cc [RVV] Support AR64ToAB64 and RGBA-family color conversions 2023-09-05 22:44:48 +00:00
row_gcc.cc YUY2ToARGB use ymm6/7 for shuffle constants 2024-01-22 21:47:23 +00:00
row_lasx.cc AVX10 cpuid detect added 2024-01-10 00:08:22 +00:00
row_lsx.cc Fix compilation errors. 2024-01-03 19:15:56 +00:00
row_msa.cc Fix Bugs on mips platform V2. 2022-03-01 13:16:31 +00:00
row_neon64.cc [AArch64] Optimize Merge{ARGB,XRGB}16To8Row_NEON 2024-05-21 07:55:03 +00:00
row_neon.cc [AArch64] Replace instances of ORR with MOV where possible 2024-04-25 20:48:16 +00:00
row_rvv.cc [RVV] Support AR64ToAB64 and RGBA-family color conversions 2023-09-05 22:44:48 +00:00
row_sve.cc [AArch64] Fix naming in ARGBToUVMatrixRow_SVE2 etc constants 2024-05-03 17:25:14 +00:00
row_win.cc Fix tidy warning that uint32_t dither4 should not be const 2023-06-02 00:42:02 +00:00
scale_any.cc UVScale down by 2 fix for C and optimize for NEON 2023-04-12 22:49:20 +00:00
scale_argb.cc [AArch64] Add SVE implementation for I422ToARGBRow 2024-04-27 18:26:11 +00:00
scale_common.cc Fix warnings for missing prototypes 2023-06-30 17:46:56 +00:00
scale_gcc.cc ScaleRowUp2_Bilinear_12_SSSE3 preserve xmm7 for Windows 2022-10-21 19:35:17 +00:00
scale_lsx.cc DetilePlane and unittest for NEON 2022-01-31 20:05:55 +00:00
scale_msa.cc Switch to C99 types 2018-01-23 19:16:05 +00:00
scale_neon64.cc [AArch64] Replace instances of ORR with MOV where possible 2024-04-25 20:48:16 +00:00
scale_neon.cc UVScale down by 2 fix for C and optimize for NEON 2023-04-12 22:49:20 +00:00
scale_rgb.cc RGBScale function using 3 steps: RGB24ToARGB, ARGBScale, ARGBToRGB24 2022-03-19 01:44:06 +00:00
scale_rvv.cc Add HAS_SCALEARGBROWDOWNEVEN_RVV marco and disable it by default 2023-12-07 22:54:23 +00:00
scale_uv.cc malloc return 1 for failures and assert for internal functions 2023-12-04 22:55:20 +00:00
scale_win.cc Switch win32 to row_gcc for clangcl. 2021-04-22 19:32:32 +00:00
scale.cc malloc return 1 for failures and assert for internal functions 2023-12-04 22:55:20 +00:00
test.sh Optimze ABGRToI420 for AVX2 2020-06-04 18:24:45 +00:00
video_common.cc Lint cleanup after C99 change CL 2018-01-24 19:16:03 +00:00