[FFmpeg-devel] [PATCH 09/13] avcodec/svq1dec: clear MMX state after MB decode loop

[Henrik Gramner]

On Tue, Oct 25, 2016 at 2:28 PM,  <u-9iep at aetey.se> wrote:
> It would be nice to look at a benchmarking comparison, to be able to
> see the actual practical performance gain of the decision not to follow
> the ABI.

Just a quick comparison from adding EMMS to a random MMX function
(from x264, because I happened to have the source for that but not
ffmpeg on this machine and I was too lazy to download it).

sad_4x4_c: 359
sad_4x4_mmx: 94
sad_4x4_mmx (emms): 186