From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10398 invoked by alias); 28 Jul 2007 20:59:34 -0000 Received: (qmail 10370 invoked by alias); 28 Jul 2007 20:59:26 -0000 Date: Sat, 28 Jul 2007 20:59:00 -0000 Message-ID: <20070728205926.10369.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/32921] [4.3 Regression] Revision 126326 causes 12% slowdown In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rguenther at suse dot de" 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: 2007-07/txt/msg02899.txt.bz2 ------- Comment #7 from rguenther at suse dot de 2007-07-28 20:59 ------- Subject: Re: [4.3 Regression] Revision 126326 causes 12% slowdown On Sat, 28 Jul 2007, hjl at lucon dot org wrote: > causes this performance regression. > > 437.leslie3d is a big file with 19 functions. If I put each function in > a separate file, there is no regression. If I put 2 particular functions > in one file, there are 10-30% regressions depending on input file. Those > 2 functions work on several global arrays. > > I tried " --param max-aliased-vops=1000000 --param avg-aliased-vops=7". > It doesn't make a difference. This sounds strange and maybe relates this to PR32624. Richard. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32921