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Date: Mon, 30 Mar 2009 10:43:36 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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Subject: Re: gcc4: missing atomic builtins?
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On Mar 29 09:55, Andy Koppe wrote:
> >  Well, I guess the question is, what's the minimum level of CPU we want to
> > support, and I can configure the next version --with-arch that level, and as
> > long as it's >=486 we'll be ok.  I think the question is mainly "686, or is
> > there any reason to have 586 as the minimum supported CPU"?
> 
> Windows 2000 and XP only require 586. Can't imagine many people using
> them on a Pentium machine though, and the 686 CMOV instruction would
> be nice to have. Also, should -with-tune be set to something recent?

The last i586 was built in 1999 and had a 300 MHz clock rate.  The i686
has been introduced in 1995 and in 1999 the P3 had a minimum clock rate
of 450 MHz.

I don't think we really need a default compiler and a default installation
sticking to the old i586 design any longer.  And, btw, is there any
Linux distro still using a i586 compiler?

If there are really still i586 users out there, hey, it's all available
in sources.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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