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SubjectRe: Why does C3 CPU downgrade in kernel 2.4.20?
Hi!

> > > I believe someone (Jeff Garzik?) benchmarked gcc code generation,
> > > and the C3 executed code scheduled for a 486 faster than it did for
> > > -m586
> > > I'm not sure about the alignment flags. I've been meaning to look
> > > into that myself...
> >
> > Interesting. I have no clue about which C3 you're talking about here
> > but a VIA Ezra has all 686 instructions including cmov and thus
> > optimising for PPro works best for me.
> >
> > Prolly I would have to do more benchmarking to find out about
> > aligment advantages.
>
> I heard cmovs are microcoded in Centaurs.
>
> s...l...o...w...

It still might be faster then a branch... or not if centaurs are
really that simple.
Pavel
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