From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26147 invoked by alias); 30 Jan 2012 00:15:38 -0000 Received: (qmail 26126 invoked by uid 22791); 30 Jan 2012 00:15:33 -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; Mon, 30 Jan 2012 00:15:21 +0000 From: "kkojima at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/52049] SH Target: Inefficient constant address access Date: Mon, 30 Jan 2012 07:15:00 -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: kkojima 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-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: 2012-01/txt/msg03466.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52049 --- Comment #1 from Kazumoto Kojima 2012-01-30 00:15:16 UTC --- (In reply to comment #0) > I'm not sure whether this is actually a problem of the SH back-end or of some > middle-end passes. It happens for all sub-targets and regardless of the > endianess. I've tried these cases on arm/thumb and got similar results which look not very good. From the rtl dumps, it looks a general issue with postreload optimization on some targets.