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Re: Fix PR23410

From: Sebastian Pop <sebastian dot pop at cri dot ensmp dot fr>
To: Paolo Bonzini <bonzini at gnu dot org>
Cc: gcc-patches at gcc dot gnu dot org
Date: Thu, 1 Sep 2005 18:11:24 +0200
Subject: Re: Fix PR23410
References: <20050901151313.GA14902@napoca.cri.ensmp.fr> <df779l$9vi$1@sea.gmane.org>

Paolo Bonzini wrote:
> 
> Do you think these and other patches should be backported to 4.0?
> 

I think that we have the same bugs in the 4.0 branch, however we don't
have VRP to stress the code.  For this reason it is very well possible
that these bugs never show up in 4.0: we only have ivopts and the
vectorizer that rely on this information.  However, if we include all
the overflow / wrapping fixes that went in mainline, we have some
performance regressions in sixtrack.  I'm trying to get the perf back
on mainline before thinking to backport the fixes.

References:
- Fix PR23410
  - From: Sebastian Pop
- Re: Fix PR23410
  - From: Paolo Bonzini

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