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Re: -funsafe-loop-optimizations

From: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
To: Steven Bosscher <stevenb at suse dot de>
Cc: gcc at gcc dot gnu dot org, Giovanni Bajo <giovannibajo at libero dot it>
Date: Sat, 1 Jan 2005 23:05:30 +0100
Subject: Re: -funsafe-loop-optimizations
References: <20041231211409.GA22814@atrey.karlin.mff.cuni.cz> <035f01c4f044$623cf160$4e422597@bagio> <20050101211056.GA27013@atrey.karlin.mff.cuni.cz> <200501012301.01815.stevenb@suse.de>

Hello,

> Is it maybe possible in some cases to look at how the induction
> variable is used (e.g. as an array index and we know that it is
> undefined to have an index outside the array domain), and decide
> on whether the loop must be finite or not based on that?

we do this on tree level.

Zdenek

Follow-Ups:
- Re: -funsafe-loop-optimizations
  - From: Dale Johannesen

References:
- Re: -funsafe-loop-optimizations
  - From: Giovanni Bajo
- Re: -funsafe-loop-optimizations
  - From: Zdenek Dvorak
- Re: -funsafe-loop-optimizations
  - From: Steven Bosscher

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