Re: [PATCH 2.4/2.5] Athlon CFLAGS

From: Dave Jones (davej@suse.de)
Date: Sun Sep 08 2002 - 18:18:33 EST

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On Sun, Sep 08, 2002 at 09:28:11PM +0200, Daniel Mehrmann wrote:
> Hi Alan,
>
> i add for the AMD Athlon family some optimize compilerflags.
> Gcc 3.1 and 3.2 support more specific Athlon instructions as 3.0 or 2.95x.
> This patch for 2.4.19, 2.4.20-pre5 and 2.5.33 set a new "-march" flag:
>
> Athlon TB/Duron += -march=athlon-tbird
> Athlon XP/Athlon4/Duron += -march=athlon-xp
> Athlon MP += -march=athlon-mp

I thought these were all just gcc aliases for the same options ?
It's been a while since I looked at the gcc option parser, so I've
forgotten exactly what happens, but at least you missed the
bogus athlon-4 option.

Are the gains between all these options really worth the added
complexity ?

Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs
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