Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753340Ab0K2LRU (ORCPT ); Mon, 29 Nov 2010 06:17:20 -0500 Received: from mtagate3.uk.ibm.com ([194.196.100.163]:41216 "EHLO mtagate3.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752914Ab0K2LRT (ORCPT ); Mon, 29 Nov 2010 06:17:19 -0500 Message-ID: <4CF38BBA.4020202@de.ibm.com> Date: Mon, 29 Nov 2010 12:17:14 +0100 From: Christian Borntraeger User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.9) Gecko/20100918 Lightning/1.0b2 Icedove/3.1.4 MIME-Version: 1.0 To: Segher Boessenkool CC: =?ISO-8859-1?Q?Am=E9rico_Wang?= , Hui Zhu , linux-kernel@vger.kernel.org, gdb@sourceware.org, hellogcc@freelists.org, linux-kbuild@vger.kernel.org Subject: Re: [PATCH] Built kernel without -O2 option References: <20101129081619.GD5218@cr0.nay.redhat.com> <4CF37603.5080301@de.ibm.com> <52488.94.211.195.167.1291029121.squirrel@gate.crashing.org> In-Reply-To: <52488.94.211.195.167.1291029121.squirrel@gate.crashing.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 514 Lines: 14 Am 29.11.2010 12:12, schrieb Segher Boessenkool: >> In essence -O2 just tells gcc to activate a list of optimizations >> gcc -Q -O2 --help=optimizers >> tells you what. > > Not quite; see http://gcc.gnu.org/wiki/FAQ#optimization-options . > Erm...right. Thank you. -- 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/