From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24793 invoked by alias); 4 Jun 2007 22:15:57 -0000 Received: (qmail 24683 invoked by alias); 4 Jun 2007 22:15:46 -0000 Date: Mon, 04 Jun 2007 22:15:00 -0000 Message-ID: <20070604221546.24682.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/32183] [4.3 Regression] reassoc2 can more extra calculations into a loop In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rakdver at kam dot mff dot cuni dot cz" 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: 2007-06/txt/msg00228.txt.bz2 ------- Comment #20 from rakdver at kam dot mff dot cuni dot cz 2007-06-04 22:15 ------- Subject: Re: [4.3 Regression] reassoc2 can more extra calculations into a loop > Can anyone show that the newly added dce_loop anything useful? Yes, predictive commoning does not work as well if there is dead code (which is why it was added. > Can we disable it or move it after the second reassoc? Reassoc should be fixed, we should not consider workarounds like this. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32183