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Re: [RFC] Fix PR c/5250
- From: Mark Mitchell <mark at codesourcery dot com>
- To: Gwenole Beauchesne <gbeauchesne at mandrakesoft dot com>, gcc-patches at gcc dot gnu dot org
- Cc: rodrigc at mediaone dot net, jh at suse dot cz, rth at redhat dot com
- Date: Tue, 12 Feb 2002 15:21:11 -0000
- Subject: Re: [RFC] Fix PR c/5250
--On Friday, February 08, 2002 9:45 PM +0100 Gwenole Beauchesne
<gbeauchesne@mandrakesoft.com> wrote:
> Hi,
>
> This is PR c/4257, PR c/5049, PR c/5250 which apparently occur with
> regrename optimization. Those problems exist in 3.0-branch but was fixed
> in MAIN when Jan Hubicka killed jump_optimize:
> <http://gcc.gnu.org/ml/gcc-patches/2001-07/msg01430.html>
>
> The following patch disable jump_optimization for NOOP_MOVES prior to the
> regrename pass. Bootstrapped, regtested on i586-mandrake-linux-gnu. No
> regressions.
This patch seems pretty dramatic, and, as Jan says, I don't see why, in
prinicple, it should help. So, without further analysis, I don't think
this patch is appropriate for the 3.0 branch.
--
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com