i386 FP comparsion bug (and sollution)

[Jeffrey A Law]

  In message < 19981030102448.60179@atrey.karlin.mff.cuni.cz >you write:
  > Yes, it is bug. But why do not turn it to feature?
No.  Not separating the cc0 from the cc0 user is a fundamental design concept,
we are not changing it anytime soon.

We need to stop regstack from inserting insns between the cc0 setter and
the cc0 user.  Anything else is unacceptable.

jeff