Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932331AbVIMGEu (ORCPT ); Tue, 13 Sep 2005 02:04:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932332AbVIMGEu (ORCPT ); Tue, 13 Sep 2005 02:04:50 -0400 Received: from mailout11.sul.t-online.com ([194.25.134.85]:10918 "EHLO mailout11.sul.t-online.com") by vger.kernel.org with ESMTP id S932331AbVIMGEt (ORCPT ); Tue, 13 Sep 2005 02:04:49 -0400 Message-Id: <5.1.0.14.2.20050913075517.0259c498@pop.t-online.de> X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Tue, 13 Sep 2005 08:04:40 +0200 To: linux-kernel@vger.kernel.org From: Margit Schubert-While Subject: 2.6.13/14 x86 Makefile - Pentiums penalized ? Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-ID: bKgmdsZlZe1dP--G1fCi2x9lm1SuUTVhqbq3LTlhlTJ-V095ShCO0u X-TOI-MSGID: a6c39e36-d37a-4cce-a906-26e16c6ec617 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 812 Lines: 23 In arch/i386/makefile we have : cflags-$(CONFIG_MPENTIUMII) += -march=i686 $(call cc-option,-mtune=pentium2) cflags-$(CONFIG_MPENTIUMIII) += -march=i686 $(call cc-option,-mtune=pentium3) cflags-$(CONFIG_MPENTIUMM) += -march=i686 $(call cc-option,-mtune=pentium3) cflags-$(CONFIG_MPENTIUM4) += -march=i686 $(call cc-option,-mtune=pentium4) According to the gcc 3.x doc, the -mtune is not avaliable for i686 and, indeed, with 3.3.5 no -mtune is generated/used (make V=1). This, of course, heavily penalizes P4's (the notorious inc/dec). Margit - 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/