[FFmpeg-devel] [flamefest-start] A little something on MMX/SSE intrinsics

Rich Felker dalias
Thu Feb 28 02:32:43 CET 2008

On Wed, Feb 27, 2008 at 10:59:52PM +0000, M?ns Rullg?rd wrote:
> > I do know that gcc does quite stupid things on x86 be it when compiling C
> > code or intrinsics. And i know that gcc is generally better at compiling
> > x86 code than code for other less common architecures. Combining these
> > does strongly point toward that the gap between intrinsics and asm will
> > be bigger on ppc than x86 not smaller.
> > Of course you are correct that i do not strictly "know" it. Its just VERY
> > likely.
> It is wrong to talk about the probability of something that has a
> definite value, even if it has not yet been measured.  Probabilities
> would be appropriate if speculating over the abilities of future GCC
> versions.

Welcome to the world of QM. Unfortunately that's how all facts are..



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