Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759337AbYBRSOM (ORCPT ); Mon, 18 Feb 2008 13:14:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752184AbYBRSN6 (ORCPT ); Mon, 18 Feb 2008 13:13:58 -0500 Received: from turing-police.cc.vt.edu ([128.173.14.107]:34047 "EHLO turing-police.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751558AbYBRSN5 (ORCPT ); Mon, 18 Feb 2008 13:13:57 -0500 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2 To: David Howells Cc: Geert Uytterhoeven , Adrian Bunk , Roel Kluin <12o3l@tiscali.nl>, lkml , cbe-oss-dev@ozlabs.org, linuxppc-dev@ozlabs.org, Willy Tarreau , Arjan van de Ven Subject: Re: [PATCH 1/3] Fix Unlikely(x) == y In-Reply-To: Your message of "Mon, 18 Feb 2008 14:27:10 GMT." <12131.1203344830@redhat.com> From: Valdis.Kletnieks@vt.edu References: <47B70A61.9030306@tiscali.nl> <20080216092552.325e5726@laptopd505.fenrus.org> <20080216173315.GU8953@1wt.eu> <20080216094226.1e8eede1@laptopd505.fenrus.org> <47B72BFE.9060302@am.sony.com> <20080216103927.2a02352b@laptopd505.fenrus.org> <1203249003.6718.24.camel@concordia> <20080218135609.GD21080@cs181133002.pp.htv.fi> <12131.1203344830@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1203358266_2991P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Mon, 18 Feb 2008 13:11:06 -0500 Message-ID: <26571.1203358266@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 948 Lines: 29 --==_Exmh_1203358266_2991P Content-Type: text/plain; charset=us-ascii On Mon, 18 Feb 2008 14:27:10 GMT, David Howells said: > __builtin_expect() is useful on FRV where you _have_ to give each branch and > conditional branch instruction a measure of probability whether the branch > will be taken. What does gcc do the 99.998% of the time we don't have likely/unlikely coded? --==_Exmh_1203358266_2991P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFHuco6cC3lWbTT17ARAh+cAKD5ET97Gyef5yariQO4KkTKYSAucQCgomsw NiqkKVG+zUxU2wMpR2NuZbk= =ycYU -----END PGP SIGNATURE----- --==_Exmh_1203358266_2991P-- -- 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/