-O3 vs. -O2 (was Re: [ale] sharing an experience....debian....)
esoteric at 3times25.net
Thu Feb 12 05:49:13 EST 2004
Jeff Hubbs wrote:
> Well, the line in make.conf, after changing it for the machine in
> question, reads
> CFLAGS="-O3 -march=pentium -funroll-loops -pipe"
> so, there's -O3 *and* -funroll-loops. The bit about the larger binaries
> not being helped very much by cache is worrisome because we're talking
> about 16KB L1 and and L2 on the mobo (dunno how big) on the P/120 that's
> cranking away in the basement right now.
I would guess that it's possible that later iterations of gcc will
likely not target older hardware as well as the newer stuff. Just a guess.
Until later, Geoffrey Registered Linux User #108567
Building secure systems inspite of Microsoft
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