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Date: Sat, 28 Jan 2006 09:56:13 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: i686-pc-cygwin on an i586
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On Jan 28 01:33, Christopher Faylor wrote:
> On Fri, Jan 27, 2006 at 03:06:44PM -0700, Eric Blake wrote:
> >According to Dave Korn on 1/27/2006 9:34 AM:
> >>Nope, don't worry about it, that's a bit of a red-herring.  By default,
> >>the code gcc generates is good for everything from '486 up.  The
> >>instruction scheduling and choice of which instructions to use may be
> >>tuned to be optimal for a 686 and so may be less-than-optimal on a
> >>'586, but there should not be any actual backward-compatibility issues.
> >
> >Speaking of which, should the next release of cygwin gcc be configured
> >to generate code tuned for 686, rather than penalizing most modern CPUs
> >with 386-compatible but slower code sequences?
> 
> Why do you assume that this is not already the case?  I use i686-pc-cygwin
> as the target for everything that I build and I use a i686-pc-cygwin-gcc
> cross compiler.

Same here, same for the net distro itself.  AFAIK we're generating
i686-opimized code by default for at least three years, don't we?


Corinna

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

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