[FFmpeg-devel] [PATCH] update doc/optimization.txt

Michael Niedermayer michaelni
Mon Sep 20 22:42:27 CEST 2010


On Mon, Sep 20, 2010 at 07:33:57PM +0100, M?ns Rullg?rd wrote:
> Michael Niedermayer <michaelni at gmx.at> writes:
> 
> > On Tue, Sep 21, 2010 at 01:23:24AM +1000, Peter Ross wrote:
> >> On Mon, Sep 20, 2010 at 03:31:31PM +0200, Michael Niedermayer wrote:
> >> > On Fri, Sep 17, 2010 at 03:53:45PM -0400, Ronald S. Bultje wrote:
> >> > > Hi,
> >> > > 
> >> > > On Fri, Sep 17, 2010 at 2:49 PM, Michael Niedermayer <michaelni at gmx.at> wrote:
> >> > > > On Fri, Sep 17, 2010 at 06:23:16PM +0100, M?ns Rullg?rd wrote:
> >> > > >> "Ronald S. Bultje" <rsbultje at gmail.com> writes:
> >> > > >>
> >> > > >> > Hi,
> >> > > >> >
> >> > > >> > $subj, fixes a typo and mentions yasm.
> >> > > >> >
> >> > > >> > I could word it stronger ("if you write new code, yasm is preferred
> >> > > >> > for non-inlined functions") if we can agree on that (which I don't
> >> > > >> > think we do yet).
> >> > > >>
> >> > > >> Does anyone who actually writes any asm nowadays disagree?
> >> > > >
> >> > > > i dont know, but the one maintaining the x86 asm does and the project
> >> > > > leader disagrees too
> >> > > 
> >> > > So is the patch as posted ok then?
> >> > 
> >> > ive no oppinon on this it feels a bit moving toward inconsistent asm mix
> >> > though
> >> 
> >> FWIW:
> >> 
> >> Xvid uses nasm/yasm to provide fast routines across gcc and msvc
> >> and friends.
> >> 
> >> The decision to was made during the Instruction Set War. Back then
> >> msvc6 did not support the latest opcodes.
> >
> > and i remember suggesting that ffmpeg used nasm too so that code
> > could be shared with xvid but people back then where against it
> 
> I dug into the archives, and the closest things resembling a discussion
> on the topic I could find are these:
> 
> http://article.gmane.org/gmane.comp.video.ffmpeg.devel/18410
> http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/9628

I suspect what ive meant predates these mails but its too long ago to
really remember where and how i suggested that

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I have often repented speaking, but never of holding my tongue.
-- Xenocrates
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