From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31460 invoked by alias); 23 Jan 2012 14:11:10 -0000 Received: (qmail 31431 invoked by uid 22791); 23 Jan 2012 14:11:09 -0000 X-SWARE-Spam-Status: No, hits=-2.9 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; Mon, 23 Jan 2012 14:10:56 +0000 From: "vries at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/51879] Missed tail merging with non-const/pure calls Date: Mon, 23 Jan 2012 14:51:00 -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-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: vries at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: 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 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: 2012-01/txt/msg02643.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51879 --- Comment #5 from vries at gcc dot gnu.org 2012-01-23 14:10:38 UTC --- Created attachment 26430 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26430 Tentative patch 2012-01-23 Tom de Vries PR tree-optimization/51879 tree-ssa-sccvn.c (visit_reference_op_call): Handle gimple_vdef. (visit_use): Handle non-pure/const calls using visit_reference_op_call. gcc.dg/pr51879.c: New test. gcc.dg/pr51879-2.c: Same. gcc.dg/pr51879-3.c: Same. gcc.dg/pr51879-4.c: Same.