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Re: optimization/9319: slower code generated for simple loop on linux
- From: Richard Henderson <rth at redhat dot com>
- To: ebotcazou at gcc dot gnu dot org
- Cc: gcc-prs at gcc dot gnu dot org,
- Date: 17 Jan 2003 03:36:02 -0000
- Subject: Re: optimization/9319: slower code generated for simple loop on linux
- Reply-to: Richard Henderson <rth at redhat dot com>
The following reply was made to PR optimization/9319; it has been noted by GNATS.
From: Richard Henderson <rth@redhat.com>
To: Eric Botcazou <ebotcazou@libertysurf.fr>
Cc: Amnon Cohen <amnon_cohen@yahoo.com>, gcc-bugs@gcc.gnu.org,
gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org
Subject: Re: optimization/9319: slower code generated for simple loop on linux
Date: Thu, 16 Jan 2003 19:31:44 -0800
On Thu, Jan 16, 2003 at 08:12:03PM +0100, Eric Botcazou wrote:
> Richard, do you think that the problem is worth looking into or that it is a
> lost cause ?
I don't think it's worth much time. The only way to Really Fix
this is to move to CFG-based loop analysis.
You might see if the code on cfg-brach, or rtlopt-branch fixes this.
r~