155714SkrisThere is a ppro flag in cast-586 which turns on/off
255714Skrisgeneration of pentium pro/II friendly code
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455714SkrisThis flag makes the inner loop one cycle longer, but generates 
555714Skriscode that runs %30 faster on the pentium pro/II, while only %7 slower
655714Skrison the pentium.  By default, this flag is on.
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