Found this interesting bit of trivia in the glibc library source:
i686> more Implies
# Due to the reordering and the oher nifty extensions in the i686 it is
# not really good to use heavily i586 optimized code on a i686. It's
# better to use i486/i386 code.
Under i786 I found the comment that the Pentium II core was almost the
same as the Pentium Pro. Maybe Mandrake should optimize for i686, else
it means for anyone with a Pentium-Pro or higher is probably better off
running on a 386/486 based distro. :-(
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Linda A Walsh | Trust Technology, Core Linux, SGI
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