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Re: GCC build goes into endless loop

From: Sebastian Pop <sebastian dot pop at cri dot ensmp dot fr>
To: Andrew Pinski <pinskia at physics dot uc dot edu>
Cc: Gerald Pfeifer <gerald at pfeifer dot com>, gcc at gcc dot gnu dot org
Date: Tue, 16 Aug 2005 01:34:38 +0200
Subject: Re: GCC build goes into endless loop
References: <Pine.BSF.4.62.0508152104510.43950@pulcherrima.dbai.tuwien.ac.at> <8401714babf7ae4b184a085019f1c7cf@physics.uc.edu>

Andrew Pinski wrote:
> 
> On Aug 15, 2005, at 4:03 PM, Gerald Pfeifer wrote:
> 
> >Can someone else reproduce this on an i386 or some other target?
> 
> This should been already fixed by:
> 2005-08-15  Sebastian Pop  <pop@cri.ensmp.fr>
>         PR 23386
> 
> It was caused by:
> 2005-08-13  Sebastian Pop  <pop@cri.ensmp.fr>
>         PR tree-optimization/22236
> 
> What is happening here is we were miss-compiling a finite loop to be an
> infinite loop.
> 

Because niter estimation catches more cases now, it has triggered a
latent bug in the computation of the estimation.  Sorry again, next
time I'll modify scev I'll check on i686 also.

Sebastian

References:
- GCC build goes into endless loop
  - From: Gerald Pfeifer
- Re: GCC build goes into endless loop
  - From: Andrew Pinski

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