On Mon, Oct 24, 2016 at 8:09 PM, wm4 <nfx...@googlemail.com> wrote: > B) add a compile time option that runs emms() unconditionally at the end > of each mmx asm block > > Since musl intentionally evades detection, neither can be enabled > automatically, probably. It would be interesting to see what the speed > impact of B) actually is.
Depends on the function, but in small/simple DSP functions (which most relevant MMX functions are) adding emms at the end will make the entire function twice as slow on most Intel CPUs. So it's certainly not negligible. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
