From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22633 invoked by alias); 30 Dec 2011 02:14:19 -0000 Received: (qmail 22620 invoked by uid 22791); 30 Dec 2011 02:14:18 -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; Fri, 30 Dec 2011 02:14:04 +0000 From: "oleg.endo@t-online.de" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/50749] SH Target: Post-increment addressing used only for first memory access Date: Fri, 30 Dec 2011 02:14:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: oleg.endo@t-online.de X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned 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: 2011-12/txt/msg02790.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50749 --- Comment #10 from Oleg Endo 2011-12-30 02:14:00 UTC --- (In reply to comment #9) > (In reply to comment #8) > > Specifying -fno-tree-forwprop doesn't seem to have any effect on these cases. > > For that function, -fdump-tree-all shows that the tree loop ivopts > optimization does it. Try -fno-tree-forwprop -fno-ivopts. This makes even worse code. Anyway, I think this issue should be addressed by the auto_inc_dec pass. If OK, I'd like to change it from target PR to middle-end PR.