From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10725 invoked by alias); 5 Mar 2005 23:37:11 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 10682 invoked by uid 48); 5 Mar 2005 23:37:05 -0000 Date: Sat, 05 Mar 2005 23:37:00 -0000 Message-ID: <20050305233705.10681.qmail@sourceware.org> From: "steven at gcc dot gnu dot org" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20041221015654.19097.phython@gcc.gnu.org> References: <20041221015654.19097.phython@gcc.gnu.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug rtl-optimization/19097] [3.4/4.0/4.1 regression] Quadratic behavior with many sets for the same register in gcse CPROP X-Bugzilla-Reason: CC X-SW-Source: 2005-03/txt/msg00731.txt.bz2 List-Id: ------- Additional Comments From steven at gcc dot gnu dot org 2005-03-05 23:37 ------- I don't think this will be fixed for 4.1, unless we kick out implicit sets from gcse, or all of gcse. The former may be possible if our const/copy prop at the tree level is good enough, but I wouldn't count on it. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097