-O4 needed

[Jakub Jelinek]

> 100000 elements
>    cc -fast -xO5:   195 ms
>    gcc -O3 -fstrength-reduce -fthread-jumps -fcse-follow-jumps
> -fcse-skip-blocks -frerun-cse-after-loop -frerun-loop-opt -fgcse
> -fexpensive-optimizations -fregmove -fschedule-insns -fschedule-insns2
> -ffunction-sections -fcaller-saves -funroll-loops -fmove-all-movables
> -freduce-all-givs -fstrict-aliasing
>                 :   202 ms

If you want to compare with SunPRO, you'd better use latest CVS egcs, and
pass it gcc -O3 -fstrict-aliasing -mtune=ultrasparc -mvis -mv8plus
as the new SPARC backend is much better than the old one. Sibcall
optimization could help here a lot as well.

Cheers,
    Jakub
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Jakub Jelinek | jj@sunsite.mff.cuni.cz | http://sunsite.mff.cuni.cz
Administrator of SunSITE Czech Republic, MFF, Charles University
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Ultralinux - first 64bit OS to take full power of the UltraSparc
Linux version 2.1.120 on a sparc64 machine (498.80 BogoMips).
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