Hello, I resent my AVX2 patch for v210 unpacking. My first attempt didn't get picked up by the Patchwork list for some reason.
I installed Linux on a Broadwell laptop to utilize James Darnley's checkasm patch for v210 decode. The results are below. AVX2 gets a nice boost from replacing SHUFPS instructions with VPBLENDD, which has more flexible port bindings. VBLENDPS could also be substituted and is available from SSE4.1 onward, however I found only the AVX2 code received any measureable gain from that change. Any further comments are greatly appreciated. Thanks, Mike Tested on Broadwell CPU, Ubuntu 18.10 x86_64 ~/FFmpeg$ tests/checkasm/checkasm --bench --test=v210dec benchmarking with native FFmpeg timers nop: 94.1 checkasm: using random seed 3963743306 SSSE3: - v210dec.v210_unpack [OK] AVX: - v210dec.v210_unpack [OK] AVX2: - v210dec.v210_unpack [OK] checkasm: all 3 tests passed v210_unpack_c: 1625.2 v210_unpack_ssse3: 604.2 v210_unpack_avx: 592.2 v210_unpack_avx2: 422.2 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
