From owner-svn-src-all@FreeBSD.ORG  Thu Dec  4 17:10:26 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id B41ECED;
 Thu,  4 Dec 2014 17:10:26 +0000 (UTC)
Received: from smtp.des.no (smtp.des.no [194.63.250.102])
 by mx1.freebsd.org (Postfix) with ESMTP id 7317E3E2;
 Thu,  4 Dec 2014 17:10:26 +0000 (UTC)
Received: from nine.des.no (smtp.des.no [194.63.250.102])
 by smtp-int.des.no (Postfix) with ESMTP id 73FE4AF5E;
 Thu,  4 Dec 2014 17:10:25 +0000 (UTC)
Received: by nine.des.no (Postfix, from userid 1001)
 id 2897919F9; Thu,  4 Dec 2014 18:10:23 +0100 (CET)
From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Dimitry Andric <dim@FreeBSD.org>
Subject: Re: svn commit: r275468 - head/sys/dev/usb/controller
References: <201412032155.sB3LtjJN043364@svn.freebsd.org>
 <20141204005451.GM99957@funkthat.com>
 <1373EB55-4238-40D0-B481-53C8B46D6E6C@FreeBSD.org>
Date: Thu, 04 Dec 2014 18:10:23 +0100
In-Reply-To: <1373EB55-4238-40D0-B481-53C8B46D6E6C@FreeBSD.org> (Dimitry
 Andric's message of "Thu, 4 Dec 2014 17:55:40 +0100")
Message-ID: <86wq67e3y8.fsf@nine.des.no>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (berkeley-unix)
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
 John-Mark Gurney <jmg@funkthat.com>, src-committers@freebsd.org,
 Hans Petter Selasky <hselasky@freebsd.org>
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 04 Dec 2014 17:10:26 -0000

Dimitry Andric <dim@FreeBSD.org> writes:
> Maybe it is easier to alias ffs() and friends to __builtin_ffs(),
> since the compilers we support have these builtins already.

That should already be the case on platforms that support it.  There is
absolutely no reason to hand-roll an ffs() equivalent.

(unfortunately, only i386 and amd64 do this; someone[tm] should fix the
others)

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no