Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750962AbXACRG7 (ORCPT ); Wed, 3 Jan 2007 12:06:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750951AbXACRG7 (ORCPT ); Wed, 3 Jan 2007 12:06:59 -0500 Received: from vsmtp1.tin.it ([212.216.176.141]:40494 "EHLO vsmtp1.tin.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750930AbXACRG6 (ORCPT ); Wed, 3 Jan 2007 12:06:58 -0500 Date: Wed, 3 Jan 2007 18:06:09 +0100 (CET) From: l.genoni@oltrelinux.com X-X-Sender: venom@Phoenix.oltrelinux.com To: Linus Torvalds cc: Grzegorz Kulewski , Alan , Mikael Pettersson , s0348365@sms.ed.ac.uk, 76306.1226@compuserve.com, akpm@osdl.org, bunk@stusta.de, greg@kroah.com, linux-kernel@vger.kernel.org, yanmin_zhang@linux.intel.com Subject: Re: kernel + gcc 4.1 = several problems In-Reply-To: Message-ID: References: <200701030212.l032CDXe015365@harpo.it.uu.se> <20070103102944.09e81786@localhost.localdomain> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 892 Lines: 37 Just to make clearer why I am so curious, this from X86_64 X2 3800+: DarkStar:{venom}:/tmp> gcc -DCMOV -Wall -O2 t.c DarkStar:{venom}:/tmp>time ./a.out 600000000 real 0m0.151s user 0m0.150s sys 0m0.000s DarkStar:{venom}:/tmp> gcc -Wall -O2 t.c DarkStar:{venom}:/tmp> time ./a.out 600000000 real 0m0.176s user 0m0.180s sys 0m0.000s DarkStar:{venom}:/tmp>gcc -m32 -DCMOV -Wall -O2 t.c DarkStar:{venom}:/tmp>time ./a.out 600000000 real 0m0.152s user 0m0.160s sys 0m0.000s DarkStar:{venom}:/tmp>gcc -m32 -Wall -O2 t.c DarkStar:{venom}:/tmp>time ./a.out 600000000 real 0m0.200s user 0m0.200s sys 0m0.000s - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/