[FFmpeg-devel] [PATCH] pointless #ifdeffery in mpegvideo_ppc.c

Michael Niedermayer michaelni
Tue Oct 2 15:48:23 CEST 2007


On Tue, Oct 02, 2007 at 01:14:18PM +0200, Luca Barbato wrote:
> Ivan Kalvachev wrote:
> > 
> > I wonder why altivec code is written with intrinsics and not written
> > in assembler.
> > Is there some technical reason?

no, patches replacing intrinsics by asm() are welcome!

> Simpler to manage and debug.

really? didnt the ffmpeg altivec devels spend a huge amount of time getting
their code working on gcc 3.? on mac osx as well as linux

and all the debuging and bugeports due to gcc miscompiling some of the code

and the most important intrinsics optimality are at the mercy of gcc and
we all know how good gcc is at optimizations sometimes

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I know you won't believe me, but the highest form of Human Excellence is
to question oneself and others. -- Socrates
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