From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24917 invoked by alias); 17 Nov 2014 02:14:38 -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 22420 invoked by uid 48); 17 Nov 2014 02:14:30 -0000 From: "amker.cheng at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/62173] [5.0 regression] [AArch64] Performance regression due to r213488 Date: Mon, 17 Nov 2014 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-Version: 5.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: amker.cheng at gmail dot com X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: jiwang at gcc dot gnu.org X-Bugzilla-Target-Milestone: 5.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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: 2014-11/txt/msg01452.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62173 bin.cheng changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amker.cheng at gmail dot com --- Comment #6 from bin.cheng --- Em, is offset valid for [reg+offset] addressing mode? if it is, why don't we transform "reg+reg+offset" into "regX <- reg + reg; [regX + offset];"?