i686-pc-cygwin on an i586

Christopher Faylor cgf-no-personal-reply-please@cygwin.com
Sat Jan 28 08:43:00 GMT 2006


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.

cgf

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