From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10624 invoked by alias); 19 Sep 2005 00:14:09 -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 10590 invoked by uid 48); 19 Sep 2005 00:14:05 -0000 Date: Mon, 19 Sep 2005 00:14:00 -0000 Message-ID: <20050919001405.10588.qmail@sourceware.org> From: "pinskia 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: 2005-09/txt/msg02372.txt.bz2 List-Id: ------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-19 00:14 ------- For -O1 on x86_64-pc-linux-gnu: For 4.1.0: tree operand scan : 18.28 (50%) usr 0.10 (18%) sys 18.33 (50%) wall 402 kB ( 0%) ggc That is the same issue as PR 21430 For both 4.0.0 and 4.1.0: 4.0.0: dominance frontiers : 12.80 (66%) usr 0.00 ( 0%) sys 12.82 (64%) wall 4.1.0: dominance frontiers : 10.87 (30%) usr 0.00 ( 0%) sys 10.89 (30%) wall 0 kB ( 0%) ggc -- What |Removed |Added ---------------------------------------------------------------------------- BugsThisDependsOn| |21430 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097