Re: [FFmpeg-devel] [PATCH] x86: replace explicit REP_RETs with RETs

2023-01-31 Thread Lynne
Feb 1, 2023, 03:00 by hen...@gramner.com: > lgtm > Thanks, pushed. ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with su

Re: [FFmpeg-devel] [PATCH] x86: replace explicit REP_RETs with RETs

2023-01-31 Thread Henrik Gramner
lgtm ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

[FFmpeg-devel] [PATCH] x86: replace explicit REP_RETs with RETs

2023-01-31 Thread Lynne
>From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your