[FFmpeg-devel] [PATCH 3/5] avutil/pixelutils: faster pixelutils_sad_[au]_16x16
Michael Niedermayer
michaelni at gmx.at
Sun Aug 17 13:51:13 CEST 2014
On Thu, Aug 14, 2014 at 11:05:13PM +0200, Clément Bœsch wrote:
> ~560 → ~500 decicycles
>
> This is following the comments from Michael in
> https://ffmpeg.org/pipermail/ffmpeg-devel/2014-August/160599.html
>
> Using 2 registers for accumulator didn't help. On the other hand,
> some re-ordering between the movs and psadbw allowed going ~538 to ~500.
> ---
> libavutil/x86/pixelutils.asm | 14 +++++++++-----
> 1 file changed, 9 insertions(+), 5 deletions(-)
should be ok
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
In fact, the RIAA has been known to suggest that students drop out
of college or go to community college in order to be able to afford
settlements. -- The RIAA
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