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[Bug rtl-optimization/19464] [3.3/3.4/4.0 Regression] gcse causes poor register allocation
- From: "dberlin at dberlin dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 15 Jan 2005 21:48:44 -0000
- Subject: [Bug rtl-optimization/19464] [3.3/3.4/4.0 Regression] gcse causes poor register allocation
- References: <20050115205816.19464.belyshev@depni.sinp.msu.ru>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dberlin at gcc dot gnu dot org 2005-01-15 21:48 -------
Subject: Re: [3.3/3.4/4.0 Regression] gcse
causes poor register allocation
On Sat, 2005-01-15 at 21:44 +0000, dberlin at dberlin dot org wrote:
> ------- Additional Comments From dberlin at gcc dot gnu dot org 2005-01-15 21:44 -------
> Subject: Re: New: [3.3/3.4/4.0 Regression]
> gcse causes poor register allocation
>
>
> > This is a regression and was introduced by this change:
>
> I have a very hard time believing this, since the patch below only
> touched store motion.
Unless, of course, GCSE was completely broken for simple expressions
somehow before the patch.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19464