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| Message-Id: | <199903242230.RAA25983@indy1.indy.net> |
| From: | "Steve Snyder" <ssnyder AT indy DOT net> |
| To: | "pgcc AT delorie DOT com" <pgcc AT delorie DOT com> |
| Date: | Wed, 24 Mar 1999 17:28:59 -0500 (EST) |
| X-Mailer: | PMMail 2.00.1500 for OS/2 Warp 4.00 |
| In-Reply-To: | <Pine.GSO.4.05.9903242031460.6739-100000@legolas.mdh.se> |
| MIME-Version: | 1.0 |
| Subject: | Re: optimize |
| Reply-To: | pgcc AT delorie DOT com |
| X-Mailing-List: | pgcc AT delorie DOT com |
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On Wed, 24 Mar 1999 20:38:54 +0100 (MET), Henrik Berglund SdU wrote:
>Does -ffast-math make the programs any faster?
>
>Using Intel C/C++ on a PentiumII-400 PC Magazine gets 15.0 int in bytemark
>benchmark but i only get 5 int something with pgcc on a amdk6-2 300. How
>can Intel C/C++ optimize so much better? PII-300 only get 4.3 int with
>pgcc.
In my v2.2.x arch/i386/Makefile I've got these lines:
ifdef CONFIG_M686
CFLAGS := $(CFLAGS) -O6 -fno-inline-functions -mcpu=i686 -march=i686 -DCPU=686
endif
These work great for me. Note that I'm using pgcc v1.1.1.
*** Steve Snyder ***
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