From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18969 invoked by alias); 9 Dec 2013 15:13:21 -0000 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 Received: (qmail 18917 invoked by uid 55); 9 Dec 2013 15:13:17 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/38474] compile time explosion in dataflow_set_preserve_mem_locs at -O3 Date: Mon, 09 Dec 2013 15:13:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 4.4.0 X-Bugzilla-Keywords: compile-time-hog, memory-hog, patch X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-12/txt/msg00730.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38474 --- Comment #77 from Richard Biener --- Author: rguenth Date: Mon Dec 9 15:13:07 2013 New Revision: 205808 URL: http://gcc.gnu.org/viewcvs?rev=205808&root=gcc&view=rev Log: 2013-12-09 Richard Biener PR middle-end/38474 * tree-ssa-structalias.c (set_union_with_increment): Remove unreachable code. (do_complex_constraint): Call set_union_with_increment with the solution delta, not the full solution. (make_transitive_closure_constraints): Merge the two constraints. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-ssa-structalias.c