From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26820 invoked by alias); 27 Jun 2007 09:37:45 -0000 Received: (qmail 26730 invoked by alias); 27 Jun 2007 09:37:33 -0000 Date: Wed, 27 Jun 2007 09:37:00 -0000 Message-ID: <20070627093733.26729.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug fortran/29975] [meta-bugs] ICEs with CP2K In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "pinskia 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: 2007-06/txt/msg02526.txt.bz2 ------- Comment #120 from pinskia at gmail dot com 2007-06-27 09:37 ------- Subject: Re: [meta-bugs] ICEs with CP2K On 27 Jun 2007 08:24:46 -0000, jv244 at cam dot ac dot uk wrote: > # BUG > FCFLAGS = -O3 -ffast-math -ftree-vectorize -march=native So -ffast-math with vectorizer changes the results. I bet this is due to reduction which is done for -ffast-math with -ftree-vectorize. Which case it might not be a bug. Yes 3 out of 130 is actually huge but if the values are huge to begin with, it might be the case this is just a percussion issue. -- Pinski -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29975