From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8503 invoked by alias); 9 Sep 2013 09:48:50 -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 8465 invoked by uid 55); 9 Sep 2013 09:48:47 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/57685] [4.8 Regression] GCC stuck in an infinite loop Date: Mon, 09 Sep 2013 09:48:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: 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: 4.8.2 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: 2013-09/txt/msg00557.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57685 --- Comment #7 from Richard Biener --- Author: rguenth Date: Mon Sep 9 09:48:43 2013 New Revision: 202386 URL: http://gcc.gnu.org/viewcvs?rev=202386&root=gcc&view=rev Log: 2013-09-09 Richard Biener Backport from mainline 2013-08-29 Richard Biener PR tree-optimization/57685 * tree-vrp.c (register_edge_assert_for_1): Recurse only for single-use operands to avoid exponential complexity. * gcc.dg/torture/pr57685.c: New testcase. Added: branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/torture/pr57685.c Modified: branches/gcc-4_8-branch/gcc/ChangeLog branches/gcc-4_8-branch/gcc/testsuite/ChangeLog branches/gcc-4_8-branch/gcc/tree-vrp.c