Henrik Gramner via ffmpeg-devel: > On Wed, Nov 1, 2023 at 10:44 AM Andreas Rheinhardt > <andreas.rheinha...@outlook.com> wrote: >> libavutil/x86/pixelutils.asm | 1 + >> 1 file changed, 1 insertion(+) > > IIRC the emms instructions is quite slow on many systems, so if this > is the only pixelutils function using mmx it's probably better to just > rewrite it to use SSE2 instead (even if that means only using the > lower half of xmm registers).
Fixing it by rewriting it in a way that avoids MMX altogether is possible, but this doesn't change the fact that all public functions absolutely need to abide by the ABI. - Andreas _______________________________________________ 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".
