From owner-freebsd-hackers@freebsd.org Thu Jun 8 12:22:48 2017 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DAFDABFDF21 for ; Thu, 8 Jun 2017 12:22:48 +0000 (UTC) (envelope-from sebastian.huber@embedded-brains.de) Received: from dedi548.your-server.de (dedi548.your-server.de [85.10.215.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 9523E7FE6D; Thu, 8 Jun 2017 12:22:48 +0000 (UTC) (envelope-from sebastian.huber@embedded-brains.de) Received: from [78.47.166.52] (helo=sslproxy04.your-server.de) by dedi548.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.85_2) (envelope-from ) id 1dIw2k-00031U-2t; Thu, 08 Jun 2017 13:56:02 +0200 Received: from [82.135.62.35] (helo=mail.embedded-brains.de) by sslproxy04.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.84_2) (envelope-from ) id 1dIw2j-0000lY-QZ; Thu, 08 Jun 2017 13:56:01 +0200 Received: from localhost (localhost.localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id 0B6932A004F; Thu, 8 Jun 2017 13:56:04 +0200 (CEST) Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id T6ks418pt9iK; Thu, 8 Jun 2017 13:56:03 +0200 (CEST) Received: from localhost (localhost.localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id 80E052A092A; Thu, 8 Jun 2017 13:56:03 +0200 (CEST) X-Virus-Scanned: amavisd-new at zimbra.eb.localhost Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id s2nR3lSLv3ZL; Thu, 8 Jun 2017 13:56:03 +0200 (CEST) Received: from [192.168.96.129] (unknown [192.168.96.129]) by mail.embedded-brains.de (Postfix) with ESMTPSA id 69F2E2A004F; Thu, 8 Jun 2017 13:56:03 +0200 (CEST) Subject: Re: Function attribute for optimization level To: FreeBSD References: <85c47390-dd27-aa74-24fe-25a9a5352527@FreeBSD.org> Cc: Eric van Gyzen From: Sebastian Huber Message-ID: Date: Thu, 8 Jun 2017 13:55:59 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 In-Reply-To: <85c47390-dd27-aa74-24fe-25a9a5352527@FreeBSD.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Authenticated-Sender: smtp-embedded@poldinet.de X-Virus-Scanned: Clear (ClamAV 0.99.2/23454/Thu Jun 8 06:37:49 2017) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Jun 2017 12:22:49 -0000 As far as I know this attribute is broken in GCC, see also: https://gcc.gnu.org/ml/gcc/2012-07/msg00201.html I would rather use the -fno-builtin-memcpy option. --=20 Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.huber@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine gesch=C3=A4ftliche Mitteilung im Sinne des EHUG= .