From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1002 invoked by alias); 2 Nov 2010 23:40:31 -0000 Received: (qmail 924 invoked by uid 22791); 2 Nov 2010 23:40:30 -0000 X-SWARE-Spam-Status: No, hits=-2.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,MISSING_MID,TW_DX 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; Tue, 02 Nov 2010 23:40:26 +0000 From: "xinliangli at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/35288] Expression reassociation problem 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: X-Bugzilla-Severity: normal X-Bugzilla-Who: xinliangli at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: 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: Tue, 02 Nov 2010 23:40:00 -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: 2010-11/txt/msg00232.txt.bz2 Message-ID: <20101102234000.hAb_iWvBBcAn5biJ2OD77h1UqbnuExWMOVQMnCzCpAY@z> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35288 --- Comment #2 from davidxl 2010-11-02 23:40:15 UTC --- LLVM got it right: addl %esi, %edi leal (%rdx,%rdi,2), %eax vs gcc: addl %esi, %edx leal (%rsi,%rdi,2), %edi leal (%rdi,%rdx), %eax vs open64: leal 0(%rdi,%rsi,1), %eax # [0] addl %esi,%edx # [0] addl %edx,%edi # [1] addl %edi,%eax # [2] David