ppc_8xx-gcc 2.95.3 Monta Vista does not do ANY loop unrolling
Joakim.Tjernlund at lumentis.se
Wed Nov 13 08:33:07 EST 2002
> From one of our compiler guys in relationship to your original question:
> > Later Alan Cox pointed out that my changes makes x86 run slower and it turns
> > out that on x86 and a fairly new gcc will automatically unroll loops 'where
> > appropriate'
> Fairly new: 3.3-pre only.
That's very new!
> Now I wonder:
> > Is this a gcc 2.95.3, PPC or Monta Vista limitation?
> > Which compiler will do unrolling 'where appropriate' for 8xx PPC and
> > Where can I get a precompiled version?
> Nowhere, nor is using it for your kernels necessarily a good idea if
> you don't have compiler experience.
> > I know Dan is handling the enet stuff, but since you both work
> Dan no longer works for MontaVista. (And has not for some time now.)
yes, my mistake.
Thanks for the info
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