Tag: Branch: Tree: e5511bc1bd

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Commit Graph

3 Commits (e5511bc1bd2e14baf20fc6da380018293bc06a8b)

Author	SHA1	Message	Date
Rostislav Pehlivanov	29eb1c51d7	mdct15: simplify x86 exptab permutation ... Removes an unneeded copy and does the 5-point permute in-place. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>	7 years ago
Rostislav Pehlivanov	70eb77b34e	mdct15: add inverse transform postrotation SIMD ... 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: Rostislav Pehlivanov <atomnuker@gmail.com>	8 years ago
Rostislav Pehlivanov	e1120b1c54	mdct15: add assembly optimizations for the 15-point FFT ... c: 1802 decicycles in fft15,16774635 runs, 2581 skips avx: 865 decicycles in fft15,16776378 runs, 838 skips Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>	8 years ago