On Tue, 2016-07-05 at 15:45 +0000, Carl Eugen Hoyos 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. > On x86, this would be a blocker. > > While I would prefer if you had tested with vanilla > gcc instead of a version patched by a distributor, no > more comments from me.
Just to be clear, I am not making any claims about any special patching in GCC 6.1.1. All I am saying about GCC is that version 5.3.1 produces suboptimal SIMD sequences; 6.1.1 gives much better SIMD sequences. Both versions are preinstalled on Fedora images in the IBM cloud. I have no way of knowing how those versions of GCC behave on different machines. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
