From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 43238 invoked by alias); 5 Jun 2015 04:02:44 -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 43189 invoked by uid 48); 5 Jun 2015 04:02:40 -0000 From: "glisse at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/66423] [6 Regression] a % (1 << b) no longer gets folded to a & (1 << b) for unsigned a Date: Fri, 05 Jun 2015 04:02:00 -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: 6.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: glisse 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: 6.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status cf_reconfirmed_on target_milestone short_desc everconfirmed 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/msg00465.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66423 Marc Glisse changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-06-05 Target Milestone|--- |6.0 Summary|a % (1 << b) no longer gets |[6 Regression] a % (1 << b) |folded to a & (1 << b) for |no longer gets folded to a |unsigned a and b |& (1 << b) for unsigned a Ever confirmed|0 |1 --- Comment #1 from Marc Glisse --- a % (unsigned int) (1 << b) The pattern in match.pd seems to be missing a 'convert' case.