From owner-freebsd-questions@FreeBSD.ORG Thu Apr 5 15:02:35 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1D8D616A402 for ; Thu, 5 Apr 2007 15:02:35 +0000 (UTC) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.freebsd.org (Postfix) with ESMTP id 01DDD13C48A for ; Thu, 5 Apr 2007 15:02:33 +0000 (UTC) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id BC7C11A4D8D; Thu, 5 Apr 2007 08:02:32 -0700 (PDT) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 1EE0D5154D; Thu, 5 Apr 2007 11:02:32 -0400 (EDT) Date: Thu, 5 Apr 2007 11:02:31 -0400 From: Kris Kennaway To: scuba@centroin.com.br Message-ID: <20070405150231.GB6128@xor.obsecurity.org> References: <20070405093721.N22331@trex.centroin.com.br> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="GID0FwUMdk1T2AWN" Content-Disposition: inline In-Reply-To: <20070405093721.N22331@trex.centroin.com.br> User-Agent: Mutt/1.4.2.2i Cc: freebsd-questions@freebsd.org Subject: Re: unroll-loops - Is it always safe? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Apr 2007 15:02:35 -0000 --GID0FwUMdk1T2AWN Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 05, 2007 at 09:54:08AM -0300, scuba@centroin.com.br wrote: > Hi All, >=20 > Is it always safe to use "-funroll-loops" as a flag to=20 > /etc/make.conf ? Does it realy improve the compiled programs? No and usually not. > When should I avoid to use it? You should never use it unless you have measured an improvement on specific code. Kris --GID0FwUMdk1T2AWN Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGFQ+HWry0BWjoQKURAnW3AKDIsBGMxKjtFR4olbT/0+C6uH2ByACdGI// J1Bna+9f+BicCnGgeHEQyWQ= =C2dl -----END PGP SIGNATURE----- --GID0FwUMdk1T2AWN--