[FFmpeg-devel] [PATCH 3/3] lavc/svq1enc: R-V V ssd_int8_vs_int16

[Rémi Denis-Courmont]

Le perjantaina 5. tammikuuta 2024, 2.56.18 EET flow gg a écrit :
> One vset can be reduced, but vwsub should not be used in this case. I
> modified it in this reply.

Fair enough, but are you sure that that's faster than keeping the vsetvli and 
removing the sign extension?

> Rémi Denis-Courmont <remi at remlab.net> 于2024年1月5日周五 00:00写道：
> 
> > Le lauantaina 30. joulukuuta 2023, 18.20.15 EET flow gg a écrit :
> > > I mistook it, seeing the vector length as the length of the vector
> > 
> > register
> > 
> > > ..
> > > I have modified it in this reply.
> > 
> > Setting element size to 8-bit is unnecessary, and a widening subtraction
> > can
> > presumably avoid the sign extension.
> > 
> > --
> > レミ・デニ-クールモン
> > http://www.remlab.net/
> > 
> > 
> > 
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-- 
Rémi Denis-Courmont
http://www.remlab.net/