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 1RV7Ec-0001wP-IM for garchives@archives.gentoo.org; Mon, 28 Nov 2011 19:51:26 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id ECBD121C256; Mon, 28 Nov 2011 19:51:17 +0000 (UTC) Received: from mail-bw0-f53.google.com (mail-bw0-f53.google.com [209.85.214.53]) by pigeon.gentoo.org (Postfix) with ESMTP id D143821C0A4 for ; Mon, 28 Nov 2011 19:49:08 +0000 (UTC) Received: by bkaq10 with SMTP id q10so10565445bka.40 for ; Mon, 28 Nov 2011 11:49:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=klnIkQXOOemetBlpfH/kP9ffK3QMDg2UgM5G8Alr+pU=; b=vmRb6wD3JYRCRjXr4CDexhsXz+oClik5XtrC6ZXuKf3PafhCT/9vTtDo5Pg1Vn3T9W rzSVhLM9T/bJwgz3Jkh76Auukt+N1yOZVuagZX9rDY/Ff/GnnZJ2PE6ly0bohSpjkLhX sr0+0usLDAUQDRY/78nKl8t4mujdgpUWv+HOM= 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 Received: by 10.204.143.148 with SMTP id v20mr42859348bku.104.1322509747845; Mon, 28 Nov 2011 11:49:07 -0800 (PST) Received: by 10.204.14.7 with HTTP; Mon, 28 Nov 2011 11:49:07 -0800 (PST) In-Reply-To: References: <4ED3D954.8040904@binarywings.net> Date: Mon, 28 Nov 2011 14:49:07 -0500 Message-ID: Subject: Re: Devs and rice flags (Was: Re: [gentoo-user] emerge -j, make -j and make -l ) From: Michael Mol To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 X-Archives-Salt: 492b5e73-ce47-4b2c-950e-964ee3d52483 X-Archives-Hash: 31bb13b1fe345b3f1f73303cbb790eba On Mon, Nov 28, 2011 at 2:36 PM, Pandu Poluan wrote: > On Nov 29, 2011 2:02 AM, "Florian Philipp" wrote: >> Am 28.11.2011 18:56, schrieb Michael Mol: >> > On Mon, Nov 28, 2011 at 11:46 AM, Pandu Poluan >> > wrote: >> >> On Nov 28, 2011 10:38 PM, "Michael Mol" wrote: >> >>> On Sun, Nov 27, 2011 at 7:54 PM, Pandu Poluan >> >>> wrote: >> >>>> Won't file a bug report, though. I have a feeling that my bug report >> >>>> re: >> >>>> emerge failure will be marked WONTFIX thanks to the 'ricer special' >> >>>> CFLAGS >> >>> >> >>> The CFLAGS you showed me weren't any more ricer than "-O2 >> >>> -march=native". (I didn't know that -D_FORTIFY=2 came from gcc) >> >>> >> >>> They wouldn't have a leg to stand on... >> >>> >> >> >> >> Mine is: >> >> >> >> CFLAGS="-O2 -march=native -fomit-frame-pointer -floop-interchange >> >> -floop-strip-mine -floop-block -funsafe-math-optimizations >> >> -fexcess-precision=fast" >> >> >> >> If you tell me that's not a ricer's CFLAGS, then you've just made me a >> >> very >> >> happy cat :-) >> > >> > No, you've got some ugly flags in there. -fexcess-precision and >> > -funsafe-math-optimizations, in particular. (I must have been talking >> > to someone else last week; sorry, I'm terrible with names.) >> > >> >> I doubt -fexcess-precision=fast does anything at all. Pandu uses an >> AMD64 system, right? Then you have -mfpmath=sse set per default and SSE >> does not have excess precision issues (that's just for the old x87 FPU). > > I use Intel boxes, unfortunately. Are you using a 64-bit x86-derived system? Same difference in this context. AMD hit the market with a good 64-bit x86-based ISA first, and devs started calling it AMD64 then. That's mostly stuck even after Intel released a mostly-compatible competitor, EM64T. -- :wq