Squeak build problem...
Ian Piumarta
ian.piumarta at inria.fr
Fri Aug 16 05:13:35 UTC 2002
On Thu, 15 Aug 2002, Ned Konz wrote:
> On Thursday 15 August 2002 12:43 pm, Joshua 'Schwa' Gargus wrote:
> > I recently built a VM with gcc-3.2, and had similar results.
>
> So what are you using for optimization flags?
>
> Perhaps the
> -O2 -funroll-loops
>
> isn't enough...
Woah, that's missing the single most important one!
> I used this once and got pretty good results:
>
> make XCFLAGS="-fexpensive-optimizations -funroll-loops
> -malign-functions=4
-malign-loops can help too (if you don't want to unroll them all)
> -O3 -march=athlon -mcpu=athlon -fschedule-insns2
> -fno-gcse
-fomit-frame-pointer is *the* critical one. -fdefer-pops sometimes helps
too.
Ian
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