Fix issues brought up by Nathan's assertify patch for the ia64 backend.
* config/ia64/ia64.c (update_set_flags): Delete ppred and pcond
parameters. Replace conditional move code with assert checking for
ar.lc. Delete obsolete comments.
(set_src_needs_barrier): Delete cond parameter, and code using it.
(rtx_needs_barrier): Delete initialization of cond. Fix typo in
assert checking for PR_REGS. Fix calls to update_set_flags and
set_src_needs_barrier.
(group_barrier_needed): Renamed from group_barrier_needed_p. Fix all
callers. Rewrite explanatory comment before the function.
(safe_group_barrier_needed): Renamed from safe_group_barrier_needed_p.
Fix all callers.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@98900 138bc75d-0d04-0410-961f-82ee72b054a4