From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1315 invoked by alias); 12 Jan 2015 20:45:08 -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 1270 invoked by uid 55); 12 Jan 2015 20:45:04 -0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/64454] optimize (x%5)%5 Date: Mon, 12 Jan 2015 20:45:00 -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: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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: 2015-01/txt/msg00863.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64454 --- Comment #4 from Jakub Jelinek --- Author: jakub Date: Mon Jan 12 20:44:32 2015 New Revision: 219491 URL: https://gcc.gnu.org/viewcvs?rev=219491&root=gcc&view=rev Log: PR tree-optimization/64454 * tree-vrp.c (simplify_div_or_mod_using_ranges): Optimize op0 % op1 into op0 if op0 is in range [-op1 + 1, op1 - 1] for signed or [0, op1 - 1] for unsigned modulo. (simplify_stmt_using_ranges): Call simplify_div_or_mod_using_ranges even if op1 does not satisfy integer_pow2p. * gcc.dg/pr64454.c: New test. Added: trunk/gcc/testsuite/gcc.dg/pr64454.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vrp.c