[FFmpeg-devel] [PATCH] update doc/optimization.txt
Tue Sep 21 11:50:41 CEST 2010
On Tue, Sep 21, 2010 at 10:36:02AM +0100, M?ns Rullg?rd wrote:
> Michael Niedermayer <michaelni at gmx.at> writes:
> >> The function call overhead is exactly the same with yasm or C,
> >> assuming the C compiler doesn't generate ridiculous prologues and
> >> epilogues. Please stop claiming anything else. Nobody is talking
> >> about asm that actually gets inlined.
> > thats not true, the split asm cases surely where inlined and a 1:1
> > conversion to yasm would have had additional call overhead.
> Nobody ever suggested doing that. We've always been talking about
> whole functions, be they written C or yasm. Now stop making straw man
> arguments, please.
you talk about optimizing C code to asm and converting inline
to yasm both in one patch and use it as argument why yasm is better.
But its the C->asm optimization that makes it better not inline->yasm
its hardly a strawman argument to point out that there are 2 unrelated changes
and the advantages of one hardly are arguments why the other is a good idea
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
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