From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4016 invoked by alias); 2 Dec 2010 08:15:44 -0000 Received: (qmail 4002 invoked by uid 22791); 2 Dec 2010 08:15:42 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 02 Dec 2010 08:15:38 +0000 From: "irar at il dot ibm.com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/46723] [4.5/4.6 Regression] internal compiler error: in get_initial_def_for_induction, at tree-vect-loop.c:2431 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Keywords: X-Bugzilla-Severity: critical X-Bugzilla-Who: irar at il dot ibm.com X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.5.2 X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Date: Thu, 02 Dec 2010 08:15:00 -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 X-SW-Source: 2010-12/txt/msg00140.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46723 Ira Rosen changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |irar at il dot ibm.com --- Comment #8 from Ira Rosen 2010-12-02 08:15:16 UTC --- *************** get_initial_def_for_induction (gimple iv *** 2656,2667 **** --- 2639,2664 ---- loop_arg = PHI_ARG_DEF_FROM_EDGE (iv_phi, latch_e); access_fn = analyze_scalar_evolution (iv_loop, PHI_RESULT (iv_phi)); + STRIP_NOPS (access_fn); gcc_assert (access_fn); this makes gcc_assert meaningless: STRIP_NOPS will segfault for NULL access_fn before the assert. Thanks, Ira