• Rostislav Pehlivanov's avatar
    mdct15: add inverse transform postrotation SIMD · 70eb77b3
    Rostislav Pehlivanov authored
    2.5ms frames:
    Before   (c):  2638 decicycles in postrotate, 2097040 runs,    112 skips
    After (sse3):  1467 decicycles in postrotate, 2097083 runs,     69 skips
    After (avx2):  1244 decicycles in postrotate, 2097085 runs,     67 skips
    
    5ms frames:
    Before   (c):  4987 decicycles in postrotate, 1048371 runs,    205 skips
    After (sse3):  2644 decicycles in postrotate, 1048509 runs,     67 skips
    After (avx2):  2031 decicycles in postrotate, 1048523 runs,     53 skips
    
    10ms frames:
    Before   (c):  9153 decicycles in postrotate,  523575 runs,    713 skips
    After (sse3):  5110 decicycles in postrotate,  523726 runs,    562 skips
    After (avx2):  3738 decicycles in postrotate,  524223 runs,     65 skips
    
    20ms frames:
    Before   (c): 17857 decicycles in postrotate,  261866 runs,    278 skips
    After (sse3): 10041 decicycles in postrotate,  261746 runs,    398 skips
    After (avx2):  7050 decicycles in postrotate,  262116 runs,     28 skips
    
    Improves total decoding performance for real world content by 9% with avx2.
    Signed-off-by: 's avatarRostislav Pehlivanov <atomnuker@gmail.com>
    70eb77b3
mdct15_init.c 3.45 KB