Re: RFC: Policy for arch specs
On 1 Jun 1997, Guy Maor wrote:
> Galen Hazelwood <galenh@micron.net> writes:
>
> > Perhaps. Anybody have any serious arguments? I think the reason we
> > configure gcc as i486 is so it automatically optimizes for the 486; it's
> > a good middle ground.
>
> I think the only optimization gcc 2.7.* does for i486 is instruction
> alignment. The Pentium has a better fetch unit so doesn't need any
> alignment (it never incurs a misfetch penalty) so optimizing for i486
> will at least give some code bloat.
>
> I don't think it does any optimization at all for pentium.
No not in 2.7.x, but there are noticable differences for P5 and P6
in gcc 2.8.
Mike
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