From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.62) (envelope-from ) id 1HbMIf-0003Ew-OF for garchives@archives.gentoo.org; Tue, 10 Apr 2007 19:46:46 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l3AJjR7F023691; Tue, 10 Apr 2007 19:45:27 GMT Received: from smtp1.iway.na (smtp1.iway.na [196.44.136.15]) by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l3AJf0aS018772 for ; Tue, 10 Apr 2007 19:41:01 GMT Received: from vscan.iway.na (vscan.iway.na [196.44.136.13]) by smtp1.iway.na (Postfix) with ESMTP id 3614464B6 for ; Tue, 10 Apr 2007 20:40:55 +0100 (WAT) Received: from mx2.iway.na (localhost [127.0.0.1]) by vscan.iway.na (Postfix) with ESMTP id 2750B11D3C2 for ; Tue, 10 Apr 2007 20:40:58 +0100 (WAT) Received: from [192.168.1.10] ([41.205.128.215]) by mx2.iway.na (Netscape Messaging Server 4.15) with ESMTP id JGAS0A00.NKK for ; Tue, 10 Apr 2007 20:40:58 +0100 From: Uwe Thiem Organization: SysEx (Pty) Ltd. To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: CFLAGS "...-O3 -pipe" vs "...O2 " Date: Tue, 10 Apr 2007 20:39:22 +0100 User-Agent: KMail/1.9.6 References: <410166.43467.qm@web31703.mail.mud.yahoo.com> In-Reply-To: <410166.43467.qm@web31703.mail.mud.yahoo.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200704102039.22926.uwix@iway.na> X-Archives-Salt: fd678371-9a15-4eab-9cce-c7c4ca905c35 X-Archives-Hash: 866edc78a50c0743c8214e8e69256a31 On 10 April 2007, maxim wexler wrote: > --- Andrey Vul wrote: > > don't use -O3 unless you need _extreme_ performance > > -O2 -finline-functions is close to -O3 but doesn't > > use -fno-home-register > > For toolchain, I just stick to -O2. For power-hungry > > apps, I use -O2 > > -finline-functions > > glibc developer said that inlining with gcc 4.2 > > screws up code, so on > > the safe side, just use -O2 for toolchain, -O2 > > -finline-functions for > > everything else > > --------------------- > > Andrey Vul > > Too late. Damage done. I decided to go with the > example make.conf which call the O3 level "decent". No real damage. Your system will work - and quite well, especially if you prelink the whole thing to overcome longer load times of O3 binaries. Uwe -- A fast and easy generator of fractals for KDE: http://www.SysEx.com.na/iwy-1.0.tar.bz2 Proof of concept of a TSP solver for KDE: http://www.SysEx.com.na/epat-0.1.tar.bz2 -- gentoo-user@gentoo.org mailing list