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Mail Archives: cygwin/2006/01/27/17:06:54

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Date: Fri, 27 Jan 2006 15:06:44 -0700
From: Eric Blake <ebb9 AT byu DOT net>
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To: Dave Korn <dave DOT korn AT artimi DOT com>
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Subject: Re: i686-pc-cygwin on an i586
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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?

- --
Life is short - so eat dessert first!

Eric Blake             ebb9 AT byu DOT net
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