From: Dave Jones <davej@suse.de>
To: Daniel Mehrmann <daniel.mehrmann@gmx.de>
Cc: alan@lxorguk.ukuu.org.uk, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.4/2.5] Athlon CFLAGS
Date: Mon, 9 Sep 2002 01:18:33 +0200 [thread overview]
Message-ID: <20020909011833.B14358@suse.de> (raw)
In-Reply-To: <200209082128.11316.daniel.mehrmann@gmx.de>; from daniel.mehrmann@gmx.de on Sun, Sep 08, 2002 at 09:28:11PM +0200
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
next prev parent reply other threads:[~2002-09-08 23:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-08 19:28 [PATCH 2.4/2.5] Athlon CFLAGS Daniel Mehrmann
2002-09-08 23:18 ` Dave Jones [this message]
2002-09-09 0:13 ` Daniel Mehrmann
2002-09-09 0:46 ` Stephane Wirtel
2002-09-09 1:07 ` Daniel Mehrmann
2002-09-09 0:37 ` Jeff Garzik
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