From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14734 invoked by alias); 27 Jan 2011 16:19:45 -0000 Received: (qmail 14724 invoked by uid 22791); 27 Jan 2011 16:19:43 -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; Thu, 27 Jan 2011 16:19:40 +0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/45422] [4.6 Regression] compile time increases 3x. X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Keywords: compile-time-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: davidxl at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.6.0 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 Date: Thu, 27 Jan 2011 16:31:00 -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 X-SW-Source: 2011-01/txt/msg02999.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45422 --- Comment #40 from Richard Guenther 2011-01-27 16:19:26 UTC --- Btw, when I remove -fbounds-check the sizes are comparable (without prefetching), so I guess we are just better in removing bounds checking for 4.6 and that triggers size-costly loop opts such as vectorization and unrolling.