On 11/5/05, Giovanni Bajo <[EMAIL PROTECTED]> wrote: > Steven Bosscher <[EMAIL PROTECTED]> wrote: > > >> I guess the issue is what does "huge" mean, it is hard to discuss based > >> on loaded adjectives taking the place of data :-) > > > > Huge here means 15-20% on x86* hosts. > > I don't consider this huge for -O3. I think -O3 can be slower if it achieves > better code, and -funroll-loops makes it do just that.
First of all, this is too late for 4.1, second, we enable loop-unrolling with FDO. And without FDO, -funroll-loops is not necessarily an improvement. Richard.
