Hi, On Sun, May 13, 2012 at 10:56 PM, Luca Barbato <[email protected]> wrote: > On 13/05/12 22:19, Vitor Sessak wrote: >> On 05/13/2012 11:40 PM, Diego Elio Pettenò wrote: >>> Il 12/05/2012 01:15, Vitor Sessak ha scritto: >>>> >>>> Here is a version with 128-bit regs (again, completely untested). >>> >>> The patch seems to require a new series that factors "x86: use more >>> standard construct for setting ASM funcitons in FFT code" into it. >>> Probably you should resend the series. >>> >>> If you do I can test it as I have a xop-capable box at hand. >> >> Nice! Here is the full patchset. > > Fate test passed =) > > Do we have a documented way to benchmark it?
You can decode a file that uses FFT (I suppose anything like mp3 or aac will work), or run fft-test with START/STOP_TIMER around the function of interest. To switch between optimizations on the same host, use -cpuflags avx, -cpuflags xop, -cpuflags sse or -cpuflags 0 (C) as arguments to avconv. I believe someone was working on adding support for that argument to fft-test also but I don't know if that was finished. Ronald _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
