From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30069 invoked by alias); 8 Dec 2008 10:04:23 -0000 Received: (qmail 29737 invoked by alias); 8 Dec 2008 10:03:02 -0000 Date: Mon, 08 Dec 2008 10:04:00 -0000 Message-ID: <20081208100302.29736.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/38401] TreeSSA-PRE load after store misoptimization In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "sergeid at il dot ibm 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: 2008-12/txt/msg00726.txt.bz2 ------- Comment #9 from sergeid at il dot ibm dot com 2008-12-08 10:03 ------- Subject: Re: TreeSSA-PRE load after store misoptimization Can you post your gcc configuration options? I've created and attached a little patch which adds some more information to dump file. Can you apply it and send me the new .gcse1 dump? Then I'll compare it with mine and may be we'll find the reason. "steven at gcc dot gnu dot org" wrote on 04/12/2008 20:16:05: > I still don't see why this is caught on powerpc by RTL PRE, but not on ia64 > (note *ia64*, not x86). I compile with -O3 -fgcse-las. The compiler is > yesterday's trunk on ia64-unknown-linux-gnu. The .gcse1 dump is > attached. Why > is it optimized for you on powerpc but not for me on ia64? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38401