From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2946 invoked by alias); 12 Aug 2010 14:46:33 -0000 Received: (qmail 2780 invoked by uid 48); 12 Aug 2010 14:46:04 -0000 Date: Thu, 12 Aug 2010 14:46:00 -0000 Message-ID: <20100812144604.2779.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug rtl-optimization/45223] RTL PRE GCSE pass hoists trapping insn out of loop 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: 2010-08/txt/msg00990.txt.bz2 ------- Comment #6 from ubizjak at gmail dot com 2010-08-12 14:46 ------- Ouch, "Here are the ration of before and after on Intel Core i7. Gzip slowed down by 10 to 20%." [1] Richi says: "The fix is to teach LIM to do conditional invariant motion." Probably also related to PR42108 catch-all PR. [1] http://gcc.gnu.org/ml/gcc-patches/2010-08/msg00771.html [2] http://gcc.gnu.org/ml/gcc-patches/2010-08/msg00884.html -- ubizjak at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- BugsThisDependsOn| |42108 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45223