egcs-971031, sparc-sun-solaris2.5 new bootstrap failure

[Jeffrey A Law]

  In message < 199711091720.RAA14763@phal.cygnus.co.uk >you write:
  > I wonder if that was actually the most appropriate patch; the comment
  > in invariant_p says that the information is still not as good as we'd
  > like to have.
I believe it's appropriate -- especially for the release.

  > Why not add a new argument to loop_optimize, so that
  > rest_of_compilation can exactly tell it if there will be an subsequent
  > loop unrolling.  loop_optimize could then store this information in a
  > variable static to loop.c .
Something like this is pretty reasonable for the mainline sources.  Will
you implement it and send me the diffs?

jeff