Re: building perl at -O3?
In message <20011129211140.V37621@plum.flirble.org>, Nicholas Clark writes:
>Is it wise to add arm to the -O3 list for perl 5.8? Or is it safer to stay
>at -O2? And does my strange un-speedup from -O2 to -O3 reflect a RiscPC's
>slow memory and lack of L2 cache more than anything else?
Yeah, I think you're probably seeing the effects of increased code size (because
of inlining) leading to more pressure on the Icache. It's not at all uncommon
for -O3 to result in worse code for this reason. If I were you I would leave
it at -O2, or maybe try -O2 -frename-registers.