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Re: What optimizations does -O1 enable?

From: Jan Hubicka <jh at suse dot cz>
To: Falk Hueffner <falk dot hueffner at student dot uni-tuebingen dot de>
Cc: Will Newton <will at debian dot org>, gcc at gcc dot gnu dot org
Date: Wed, 12 Mar 2003 18:02:54 +0100
Subject: Re: What optimizations does -O1 enable?
References: <200303121650.53527.will@debian.org> <Pine.LNX.4.30.0303121756320.25648-100000@linux17.zdv.uni-tuebingen.de>

> On Wed, 12 Mar 2003, Will Newton wrote:
> 
> > I have some code[1] that breaks when compiled with gcc 3.2 -O1. I have tried
> > enabling all these optimizations:
> 
> Try -S -fverbose-asm and look at the .s file.
It still doesn't give you everything.  Some transformations are simply
done only when -O flag is used.

Honza
> 
> 	Falk

References:
- What optimizations does -O1 enable?
  - From: Will Newton
- Re: What optimizations does -O1 enable?
  - From: Falk Hueffner

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