From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4831 invoked by alias); 17 Jan 2003 03:36:03 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 4817 invoked by uid 71); 17 Jan 2003 03:36:02 -0000 Date: Fri, 17 Jan 2003 03:36:00 -0000 Message-ID: <20030117033602.4816.qmail@sources.redhat.com> To: ebotcazou@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, From: Richard Henderson Subject: Re: optimization/9319: slower code generated for simple loop on linux Reply-To: Richard Henderson X-SW-Source: 2003-01/txt/msg01026.txt.bz2 List-Id: The following reply was made to PR optimization/9319; it has been noted by GNATS. From: Richard Henderson To: Eric Botcazou Cc: Amnon Cohen , 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~