From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11697 invoked by alias); 29 Oct 2008 07:26:54 -0000 Received: (qmail 10618 invoked by alias); 29 Oct 2008 07:25:27 -0000 Date: Wed, 29 Oct 2008 07:26:00 -0000 Message-ID: <20081029072527.10617.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug rtl-optimization/37948] [4.4 Regression] IRA generates slower code for -mtune=core2 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: 2008-10/txt/msg01890.txt.bz2 ------- Comment #3 from pinskia at gmail dot com 2008-10-29 07:25 ------- Subject: Re: [4.4 Regression] IRA generates slower code for -mtune=core2 Sent from my iPhone On Oct 29, 2008, at 12:17 AM, "bonzini at gnu dot org" wrote: > > > ------- Comment #2 from bonzini at gnu dot org 2008-10-29 07:17 > ------- > Subject: Re: [4.4 Regression] IRA generates slower > code for -mtune=core2 > > hjl dot tools at gmail dot com wrote: >> ------- Comment #1 from hjl dot tools at gmail dot com 2008-10-29 >> 05:44 ------- >> It looks like the cost of loading/storing FP values aren't >> appropriate for >> Core 2. With this patch: > > Good. Is regmove still helping (which would be the wrong thing to do, > but gives a data point)? I noticed that ira ignores ! part of constraint do you know if the register class would change if ! was not ignored? Thanks, Andrew Pinsky > > > Paolo > > > -- > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37948 > -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37948