On Tue, Dec 10, 2002 at 08:39:38PM +0100, Daniel Egger wrote:
> Am Die, 2002-12-10 um 17.51 schrieb Alan Cox:
>
> > Well if you optimise for ppro it won't actually always work.
>
> Yeah, I had to learn earlier that it seems to support certain
> kind of cmovs but certainly not all of them and some other
> instructions seem also to be missing.
Yes.
> > Also thescheduling seems to be best with 486.
> > Remember the C3 is a single issue risc processor.
>
> Do you have pointers to some optimisation manual or whatever?
> gcc currently defines the c3 as 486+mmx+3dnow however I doubt
> that this model is entirely correct and as such leaves some
> space for improvements.
Definitely. Read my email message that went along with that commit for
more details ;-) (finding it isn't hard, it's probably one of the few
gcc-patches mails I have ever sent)
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This archive was generated by hypermail 2b29 : Sun Dec 15 2002 - 22:00:18 EST