[FFmpeg-devel] [PATCH] split-radix FFT

Michael Niedermayer michaelni
Tue Jul 29 17:41:12 CEST 2008

On Tue, Jul 29, 2008 at 06:26:49PM +0300, Uoti Urpala wrote:
> On Tue, 2008-07-29 at 17:10 +0200, Michael Niedermayer wrote:
> > And just to clarify, yes what i considered a good argument was the sentance
> > above where my reply is. That is to use MANGLE in speed critical code.
> > That way most textrels are avoided while minimizing the speed impact.
> > 
> > I do not think you ever argued for that.
> IIRC I did mention the possibility of omitting -fPIC for a subset of
> files. 
> >  I remember you strongly arguing
> > toward replacing all MANGLE by "m" knowing that it would break gcc 2.95
> > and not really caring that it would slow down code compiled with -fPIC.
> Of course the code would be slower on x86. If you want it to be as fast
> as possible then compile it with -fPIC on x86. I don't think it's
> worthwhile to pick only the globals used inside asm for such special
> treatment.

x86-64 shared libs require -fPIC, unless that has been fixed.
so the user does not always have the option to omit -fPIC

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Freedom in capitalist society always remains about the same as it was in
ancient Greek republics: Freedom for slave owners. -- Vladimir Lenin
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