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 4.43) id 1EHRQN-0007qD-5f for garchives@archives.gentoo.org; Mon, 19 Sep 2005 19:35:35 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id j8JJTdse010282; Mon, 19 Sep 2005 19:29:39 GMT Received: from smtp040.tiscali.dk (smtp040.tiscali.dk [212.54.64.106]) by robin.gentoo.org (8.13.5/8.13.5) with ESMTP id j8JJTcAP014482 for ; Mon, 19 Sep 2005 19:29:38 GMT Received: from kloeri (62.79.108.58.adsl.ynoe.tiscali.dk [62.79.108.58]) by smtp040.tiscali.dk (8.12.10/8.12.10) with SMTP id j8JJXGE1004546 for ; Mon, 19 Sep 2005 21:33:17 +0200 (MEST) Received: by kloeri (sSMTP sendmail emulation); Mon, 19 Sep 2005 21:35:17 +0200 From: kloeri@gentoo.org Date: Mon, 19 Sep 2005 21:35:17 +0200 To: gentoo-alpha@lists.gentoo.org Subject: Re: [gentoo-alpha] ev6, ev67 or ev68? Message-ID: <20050919193517.GA1968@kloeri> References: <8CAF9929-E3FA-485D-915C-5CF681FD6E9A@gmail.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-alpha@gentoo.org Reply-to: gentoo-alpha@lists.gentoo.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Disposition: inline In-Reply-To: <8CAF9929-E3FA-485D-915C-5CF681FD6E9A@gmail.com> User-Agent: Mutt/1.5.10i Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by robin.gentoo.org id j8JJTdst010282 X-Archives-Salt: 86d520c7-3562-4eae-8045-b2b2d228a697 X-Archives-Hash: ff0e38361fcc3b39b5565933bce81e6b On Mon, Sep 19, 2005 at 08:38:04PM +0200, Davide Cittaro wrote: > On a DS25, with ev68 CPU, I cannot set -mcpu=3Dev68 as CFLAGS, because = =20 > that option is not supported. Should I set it to ev6 or to ev67 then? =20 > Which is the main difference in that? > If I set no -mcpu option I have problems since the g++ compiler seems =20 > to work not properly. >=20 > Thanks >=20 Using -mcpu=3Dev67 is fine. ev68 doesn't support any new instructions afaik and scheduling is similar as well. If you decide to use -mcpu=3Dev6 you're going to miss the CIX instruction set and probably suffer (somewhat) lower performance. Regards, Bryan =C3=98stergaard --=20 gentoo-alpha@gentoo.org mailing list