[FFmpeg-devel] [PATCH] PPC64: Add versions of functions in libswscale/input.c optimized for POWER8 VSX SIMD.

Ronald S. Bultje rsbultje at gmail.com
Tue Jul 5 18:49:43 EEST 2016


On Tue, Jul 5, 2016 at 11:45 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Dan Parrot <dan.parrot <at> mail.com> writes:
> > These results for START_TIMER/STOP_TIMER are with ffmpeg
> > compiled using GCC 6.1.1
> I believe your results indicate that -cpuflags 0 has no
> effect on vsx.

I didn't even catch this the first time. I find this thread highly
unorganized. Dan, can you organize the data more usefully for us? What kind
of speedup are you seeing and how did you measure that, and why doesn't
START/STOP_TIMER show these speedups?


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