From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32378 invoked by alias); 6 Apr 2009 09:39:55 -0000 Received: (qmail 31589 invoked by uid 48); 6 Apr 2009 09:39:40 -0000 Date: Mon, 06 Apr 2009 09:39:00 -0000 Message-ID: <20090406093940.31588.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/39657] [4.3 Regression] compiling ruby (yacc) output takes inordinate amount of time on x86 with -O2 In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rguenth at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2009-04/txt/msg00462.txt.bz2 ------- Comment #2 from rguenth at gcc dot gnu dot org 2009-04-06 09:39 ------- tree PRE : 362.75 (97%) usr 3.30 (80%) sys 366.55 (97%) wall 7515 kB ( 8%) ggc So you can use -fno-tree-pre to work around this issue or limit the size of the SCCs processed (with the same effect) with the --param sccvn-max-scc-size -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Component|pending |tree-optimization Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2009-04-06 09:39:39 date| | Target Milestone|--- |4.3.4 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39657