From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1Rccdw-000801-TT for garchives@archives.gentoo.org; Mon, 19 Dec 2011 12:48:37 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id E988D21C109; Mon, 19 Dec 2011 12:48:26 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id 31D1121C045 for ; Mon, 19 Dec 2011 12:47:26 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id BB2831B401F for ; Mon, 19 Dec 2011 12:47:25 +0000 (UTC) X-Virus-Scanned: by amavisd-new using ClamAV at gentoo.org X-Spam-Flag: NO X-Spam-Score: -3.496 X-Spam-Level: X-Spam-Status: No, score=-3.496 tagged_above=-999 required=5.5 tests=[AWL=0.003, BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RP_MATCHES_RCVD=-2.499, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IB-2FVRKG5Wc for ; Mon, 19 Dec 2011 12:47:18 +0000 (UTC) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by smtp.gentoo.org (Postfix) with ESMTP id 6176E1B400E for ; Mon, 19 Dec 2011 12:47:17 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1Rcccb-0005VC-Vc for gentoo-user@gentoo.org; Mon, 19 Dec 2011 13:47:13 +0100 Received: from adsl-69-234-194-17.dsl.irvnca.pacbell.net ([69.234.194.17]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 19 Dec 2011 13:47:13 +0100 Received: from w41ter by adsl-69-234-194-17.dsl.irvnca.pacbell.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 19 Dec 2011 13:47:13 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-user@lists.gentoo.org From: walt Subject: [gentoo-user] Re: A tale of computing thud and blunder Date: Mon, 19 Dec 2011 04:49:48 -0800 Message-ID: References: <20111217210709.GA1740@waltdnes.org> <20111218011054.GA2804@waltdnes.org> <20111218103449.GA21102@waltdnes.org> <20111219000522.GA22397@waltdnes.org> <4EEE82A5.2010909@gmail.com> <4EEED697.4030000@gmail.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: adsl-69-234-194-17.dsl.irvnca.pacbell.net User-Agent: Mozilla/5.0 (X11; Linux i686; rv:8.0) Gecko/20111117 Thunderbird/8.0 In-Reply-To: X-Archives-Salt: 15785357-a350-4001-a7fa-7aed75d00b6b X-Archives-Hash: b59ebf76a2f5e8939e1add0e302d9af1 On 12/18/2011 10:49 PM, Nikos Chantziaras wrote: > Just like with any other optimization switch, there can be bugs. If > Gentoo says it doesn't support graphite, then I'd stay away from it > because Gentoo devs might not listen to your bug reports if you use > it. I've been using gcc with graphite support for about a year or so and I've had zero problems so far. (I should also mention that I haven't measured how much difference it makes, either.) Very important to notice that *building* gcc with graphite support is not at all the same as *using* graphite support while compiling. To actually *use* your graphite support, you must include these CFLAGS while compiling each package: -floop-block -floop-strip-mine -floop-interchange That implies that you can turn off graphite support by removing those flags and recompiling your buggy package before filing a bug report. (I did that only once and discovered that it didn't change the bug at all.) IIRC, gcc doesn't use those flags while compiling itself, but I could be mistaken about that. I'll check again next time I compile gcc.