From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15957 invoked by alias); 10 Jan 2008 17:00:34 -0000 Received: (qmail 15589 invoked by alias); 10 Jan 2008 16:59:50 -0000 Date: Thu, 10 Jan 2008 17:57:00 -0000 Message-ID: <20080110165950.15588.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/34683] [4.3 Regression] SSA rewriting in the loop unroller causes quadratic behavior 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: 2008-01/txt/msg00939.txt.bz2 ------- Comment #41 from rguenth at gcc dot gnu dot org 2008-01-10 16:59 ------- Subject: Bug 34683 Author: rguenth Date: Thu Jan 10 16:59:06 2008 New Revision: 131446 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131446 Log: 2008-01-10 Richard Guenther PR middle-end/34683 * tree-cfg.c (tree_merge_blocks): Do not go through the full-blown folding and stmt updating path if we just deal with virtual operands. * tree-ssa-copy.c (may_propagate_copy): Do not short-cut test for abnormal SSA_NAMEs. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-cfg.c trunk/gcc/tree-ssa-copy.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34683