From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 25992 invoked by alias); 14 Feb 2014 09:09:35 -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 25974 invoked by uid 48); 14 Feb 2014 09:09:30 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/60192] Test case gcc.dg/tree-ssa/sra-12.c fails on ARM Date: Fri, 14 Feb 2014 09:09:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth 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: 2014-02/txt/msg01289.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60192 --- Comment #1 from Richard Biener --- Well, then SRA didn't work. The aggregate copy should have been elided and the local 'l' should have been removed: Released 11 names, 183.33%, removed 11 holes foo (struct S * p) { int l$i; int _3; : l$i_4 = MEM[(struct S *)p_2(D)]; _3 = l$i_4 + 1; MEM[(struct S *)p_2(D)] = _3; return; } (from x86_64) Maybe some cost oddity on arm prevents this?