From owner-freebsd-current@FreeBSD.ORG Sun Jun 13 08:13:41 2010 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 43F3A1065676 for ; Sun, 13 Jun 2010 08:13:41 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id BB2788FC0C for ; Sun, 13 Jun 2010 08:13:40 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id o5D8DZoi091456 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Sun, 13 Jun 2010 10:13:35 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by mail.cicely.de (8.14.3/8.14.3) with ESMTP id o5D8CDNw042328 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 13 Jun 2010 10:12:13 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id o5D8CDCO000829; Sun, 13 Jun 2010 10:12:13 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id o5D8CCWw000828; Sun, 13 Jun 2010 10:12:12 +0200 (CEST) (envelope-from ticso) Date: Sun, 13 Jun 2010 10:12:12 +0200 From: Bernd Walter To: Bruce Cran Message-ID: <20100613081212.GX87112@cicely7.cicely.de> References: <20100611162118.GR39829@acme.spoerlein.net> <867hm5tl6u.fsf@ds4.des.no> <20100612153526.GA3632@acme.spoerlein.net> <20100612163208.GS87112@cicely7.cicely.de> <864oh86tnl.fsf@ds4.des.no> <20100612225216.GT87112@cicely7.cicely.de> <20100613001750.GA30380@muon.cran.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100613001750.GA30380@muon.cran.org.uk> X-Operating-System: FreeBSD cicely7.cicely.de 7.0-STABLE i386 User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED=-1, BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 autolearn=unavailable version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on spamd.cicely.de Cc: Dag-Erling Sm?rgrav , ticso@cicely.de, current@freebsd.org Subject: Re: Cleanup for cryptographic algorithms vs. compiler optimizations X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Jun 2010 08:13:41 -0000 On Sun, Jun 13, 2010 at 12:17:50AM +0000, Bruce Cran wrote: > On Sun, Jun 13, 2010 at 12:52:16AM +0200, Bernd Walter wrote: > > I'm at least sure that the compiler can't if it is linked from another > > object file. > > Is that still true if LTO is enabled? Good question - I wasn't aware of LTO. My precondition was that the function doesn't see what is done with the result and LTO invalidates this. -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.