From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23685 invoked by alias); 20 Jun 2012 12:06:17 -0000 Received: (qmail 23675 invoked by uid 22791); 20 Jun 2012 12:06:17 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED 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; Wed, 20 Jun 2012 12:06:05 +0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/30318] VRP does not create ANTI_RANGEs on overflow Date: Wed, 20 Jun 2012 12:06:00 -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: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth 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: 2012-06/txt/msg01330.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30318 --- Comment #18 from Richard Guenther 2012-06-20 12:05:35 UTC --- Marc - I have now pushed all my refactorings into VRP, including the PLUS_EXPR handling. The basic idea was to build on simple building blocks, a "complete" union/intersect implementation and "complete" range-range operations. Mixed range/anti-range and anti-range/anti-range operations are now decomposed into several sub-operations and the results are unioned back together. Can you adjust your patch with the double-double_int arithmetic stuff to that fact? Thx.