[FFmpeg-devel] [PATCH] move h264 loopfilter strength code to yasm

[Reimar Döffinger]

On Fri, Sep 24, 2010 at 05:30:30PM +0100, M?ns Rullg?rd wrote:
> Reimar D?ffinger <Reimar.Doeffinger at gmx.de> writes:
> 
> > On Fri, Sep 24, 2010 at 07:17:06AM -0400, Ronald S. Bultje wrote:
> >> On Thu, Sep 23, 2010 at 11:18 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
> >> > On Thu, Sep 23, 2010 at 06:13:30PM -0400, Ronald S. Bultje wrote:
> >> >> $subj. This could likely be done in inline asm as well but I still
> >> >> can't write that.
> >> >
> >> > can i help you to learn it?
> >> 
> >> Yes.
> >> 
> >> - we need a way to clobber xmm registers. This turns out to be very
> >> difficult and I haven't really looked at it very seriously. Help get
> >> something like Reimar's patch committed without breaking any of the
> >> fate systems. You still are maintainer and there is a patch, there's
> >> no reason why this can't be finished.
> >
> > The main part that is lacking is a configure test.
> 
> If this (whatever "this" is) introduces a compiler dependency, we're
> better off moving it to yasm.

Well, I don't see how we could use XMM clobbers on a compiler that does
not know anything about XMM registers.