From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5092 invoked by alias); 8 Jan 2012 19:55:19 -0000 Received: (qmail 5083 invoked by uid 22791); 8 Jan 2012 19:55:18 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_ZJ 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; Sun, 08 Jan 2012 19:55:06 +0000 From: "ubizjak at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/15533] Missed move to partial register Date: Sun, 08 Jan 2012 19:55:00 -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: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: ubizjak at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 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/msg00806.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15533 --- Comment #3 from Uros Bizjak 2012-01-08 19:55:00 UTC --- We do in fact have comment in i386.md: ;; Logical inclusive and exclusive OR instructions ;; %%% This used to optimize known byte-wide and operations to memory. ;; If this is considered useful, it should be done with splitters.