From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32195 invoked by alias); 6 Sep 2008 15:27:58 -0000 Received: (qmail 31778 invoked by uid 48); 6 Sep 2008 15:26:36 -0000 Date: Sat, 06 Sep 2008 15:27:00 -0000 Message-ID: <20080906152636.31777.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/33761] tree-copyrename and tree-dominators pessimizes gzip SPEC score In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "ubizjak at gmail dot com" 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: 2008-09/txt/msg00729.txt.bz2 ------- Comment #28 from ubizjak at gmail dot com 2008-09-06 15:26 ------- (In reply to comment #27) > Also just noticed that offline copy of longest-match get extra move: > .L15: > movzbl 2(%eax), %edi #, tmp87 > leal 2(%eax), %ecx #, scan.158 > movl %edi, %edx # tmp87, > cmpb 2(%ebx), %dl #, > jne .L6 #, > > interesting :) Perhaps due to ineffective regmove (similar to PR 37364)? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33761