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| author | levytamar82 <levytamar82@gmail.com> | 2013-11-21 15:49:29 -0700 |
|---|---|---|
| committer | levytamar82 <levytamar82@gmail.com> | 2014-02-14 15:08:42 -0700 |
| commit | 3068d7d94428d32e0c33a5d3061ba8e362838a41 (patch) | |
| tree | 945a47822c6a8db9123b3db4ab6dcfc7de44a9a8 /README | |
| parent | bb07de7ccea40c145548e8d49752bcccdd08c248 (diff) | |
| download | libvpx-3068d7d94428d32e0c33a5d3061ba8e362838a41.tar libvpx-3068d7d94428d32e0c33a5d3061ba8e362838a41.tar.gz libvpx-3068d7d94428d32e0c33a5d3061ba8e362838a41.tar.bz2 libvpx-3068d7d94428d32e0c33a5d3061ba8e362838a41.zip | |
SSSE3 convolution optimization
Optimizing all SSSE3 assembly for convolution:
1. vp9_filter_block1d4_h8_sse2
2. vp9_filter_block1d8_h8_sse2
3. vp9_filter_block1d16_h8_sse2
4. vp9_filter_block1d4_v8_sse2
5. vp9_filter_block1d8_v8_sse2
6. vp9_filter_block1d16_v8_sse2
my optimization include:
-processing 2x8 elements in one 128 bit register instead of processing
8 elements in one 128 bit register.
-removing unecessary loads.
This optimization gives between 2.4% user level gain for 480p input
and 1.6% user level gain for 720p.
This Optimization is done only for 64 bit
Change-Id: Ic07fce2f9360329b4f2d956efda1480ae958766b
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