From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8320 invoked by alias); 29 Jun 2015 00:16:19 -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 8167 invoked by uid 55); 29 Jun 2015 00:16:15 -0000 From: "kugan at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/64130] vrp: handle non zero constant divided by range cannot be zero. Date: Mon, 29 Jun 2015 00:16:00 -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: 5.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: kugan at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned 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: 2015-06/txt/msg03273.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64130 --- Comment #11 from kugan at gcc dot gnu.org --- Author: kugan Date: Mon Jun 29 00:15:41 2015 New Revision: 225108 URL: https://gcc.gnu.org/viewcvs?rev=225108&root=gcc&view=rev Log: gcc/ChangeLog: 2015-06-29 Kugan Vivekanandarajah PR middle-end/64130 * tree-vrp.c (extract_range_from_binary_expr_1): For unsigned division, compute max and min when value ranges for dividend and divisor are available. gcc/testsuite/ChangeLog: 2015-06-29 Kugan Vivekanandarajah PR middle-end/64130 * gcc.dg/tree-ssa/pr64130.c: New test. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr64130.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vrp.c