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-O3 vs. -O2 (was Re: [ale] sharing an experience....debian....)
- Subject: -O3 vs. -O2 (was Re: [ale] sharing an experience....debian....)
- From: esoteric at 3times25.net (Geoffrey)
- Date: Thu Feb 12 05:49:13 2004
- In-reply-to: <1076576467.30236.848.camel@localhost>
- References: <[email protected]> <1076557029.30236.818.camel@localhost> <1076557459.3920.828.camel@localhost> <[email protected]> <1076576467.30236.848.camel@localhost>
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