Some Haifa scheduler bugs

[Jeffrey A Law]

  In message < Pine.SOL.3.90.970903184242.6496A-100000@bond.informatik.rwth-aachen.de >you write:
  > How can reload generate incorrect code in this case except if the lifetime
  > of a hard register gets extended by the scheduler or some other optimizer?
When loading of an argument register requires a reload, which may force
reload to clobber a previously loaded argument register.


jeff