From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gecko.sbs.de (gecko.sbs.de [194.138.37.40]) by mail.openembedded.org (Postfix) with ESMTP id DE6047317D for ; Tue, 2 Feb 2016 16:23:04 +0000 (UTC) Received: from mail2.sbs.de (mail2.sbs.de [192.129.41.66]) by gecko.sbs.de (8.15.2/8.15.2) with ESMTPS id u12GN2u8015260 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 2 Feb 2016 17:23:02 +0100 Received: from [139.16.76.217] (MD1FZU9C.ww002.siemens.net [139.16.76.217]) by mail2.sbs.de (8.15.1/8.15.1) with ESMTP id u12GN2kx004792 for ; Tue, 2 Feb 2016 17:23:02 +0100 To: openembedded-core@lists.openembedded.org References: <56B0AE88.3090103@siemens.com> <56B0BC99.5050405@topic.nl> From: Pascal Bach Message-ID: <56B0D7E6.9080604@siemens.com> Date: Tue, 2 Feb 2016 17:23:02 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <56B0BC99.5050405@topic.nl> Subject: Re: Default value for FULL_OPTIMIZATION X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Feb 2016 16:23:05 -0000 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Am 02.02.2016 um 15:26 schrieb Mike Looijmans: > You'd have to check the GCC documentation to be sure, but I suspect that all of "-fexpensive-optimizations -fomit-frame-pointer -frename-registers" are already in effect at -O2 optimization level, so they're redundant. > - "-fexpensive-optimizations" is included in -O2 - "-fomit-frame-pointer" is included in -O but "only on machines where doing so does not interfere with debugging", whatever that means ;) - "-frename-registers" doesn't seem to be included Soruce: https://gcc.gnu.org/onlinedocs/gcc-5.2.0/gcc/Optimize-Options.html