Date: Tue, 23 Sep 1997 15:22:50 -0400 (EDT)
From: "Art S. Kagel" <kagel AT ns1 DOT bloomberg DOT com>
To: ludvig <ludvig AT club-internet DOT fr>
Cc: djgpp AT delorie DOT com
Subject: Re: Optimisations?
In-Reply-To: <3427268E.59EB@club-internet.fr>
Message-Id: <Pine.D-G.3.91.970923142052.28571G-100000@dg1>
Mime-Version: 1.0
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On Tue, 23 Sep 1997, ludvig wrote:

> Hi again!
> 
> Just wanted to know some basics about optimisation.
> I'm trying(offcourse) to write as fast code as possible but I have seen
> -O2 and stuff to add to tha commandline, how many are there and how do
> they work? I have also read in a article that -O6 was for pentiom
> optimisation but it was 'buggy'?
> 
> I worked with Borland before and there the optimisation was integrated
> in the IDE so I never needed to learn about the commandline options.

Check out the info pages for details:

info gcc invoking optimize 

Art S. Kagel, kagel AT bloomberg DOT com