Bug#484569: Acknowledgement (g++-4.3: Regression in optimization on amd64 - g++ stuck in endless loop)

To: Bernd Zeimetz <bernd@bzed.de>, 484569@bugs.debian.org
Subject: Bug#484569: Acknowledgement (g++-4.3: Regression in optimization on amd64 - g++ stuck in endless loop)
From: Matthias Klose <doko@cs.tu-berlin.de>
Date: Thu, 5 Jun 2008 14:12:51 +0200
Message-id: <[🔎] 18503.55363.199080.295048@gargle.gargle.HOWL>
Reply-to: Matthias Klose <doko@cs.tu-berlin.de>, 484569@bugs.debian.org
In-reply-to: <[🔎] 4847B1E7.3090704@bzed.de>
References: <4847278E.20400@bzed.de> <handler.484569.B.121262278015016.ack@bugs.debian.org> <[🔎] 4847B1E7.3090704@bzed.de>

rguenth at gcc dot gnu dot org writes:
> 
> 
> ------- Comment #1 from rguenth at gcc dot gnu dot org  2008-06-05 11:24 -------
> In function cimg_library::CImg<T>& cimg_library::CImg<T>::blur_patch(unsigned
> int, float, float, unsigned int, bool), which contains some number of loops
> from
> macro expansion stuff.  -fno-tree-pre "fixes" it.  phi-translation is dog slow.

so maybe use -O2 -fno-tree-pre on all archs for now.

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References:
- Bug#484569: Acknowledgement (g++-4.3: Regression in optimization on amd64 - g++ stuck in endless loop)
  - From: Bernd Zeimetz <bernd@bzed.de>

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