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Re: optimization/9319: slower code generated for simple loop on linux
- From: Richard Henderson <rth at redhat dot com>
- To: Eric Botcazou <ebotcazou at libertysurf dot fr>
- Cc: Amnon Cohen <amnon_cohen at yahoo dot com>, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
- Date: Thu, 16 Jan 2003 19:31:44 -0800
- Subject: Re: optimization/9319: slower code generated for simple loop on linux
- References: <20030116133027.65208.qmail@web40601.mail.yahoo.com> <200301162006.39273.ebotcazou@libertysurf.fr>
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~