[FFmpeg-devel] [PATCH 1/4] avutil/x86/pixelutils: Empty MMX state in ff_pixelutils_sad_8x8_mmxext

[Henrik Gramner]

On Wed, Nov 1, 2023 at 10:44 AM Andreas Rheinhardt
<andreas.rheinhardt at 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).