Gentoo Archives: gentoo-alpha

From: kloeri@g.o
To: gentoo-alpha@l.g.o
Subject: Re: [gentoo-alpha] ev6, ev67 or ev68?
Date: Mon, 19 Sep 2005 19:35:35
Message-Id: 20050919193517.GA1968@kloeri
In Reply to: [gentoo-alpha] ev6, ev67 or ev68? by Davide Cittaro
On Mon, Sep 19, 2005 at 08:38:04PM +0200, Davide Cittaro wrote:
> On a DS25, with ev68 CPU, I cannot set -mcpu=ev68 as CFLAGS, because > that option is not supported. Should I set it to ev6 or to ev67 then? > Which is the main difference in that? > If I set no -mcpu option I have problems since the g++ compiler seems > to work not properly. > > Thanks >
Using -mcpu=ev67 is fine. ev68 doesn't support any new instructions afaik and scheduling is similar as well. If you decide to use -mcpu=ev6 you're going to miss the CIX instruction set and probably suffer (somewhat) lower performance. Regards, Bryan Ƙstergaard -- gentoo-alpha@g.o mailing list