haifa-sched.c (schedule_insns): Remove outdated comment.

	* haifa-sched.c (schedule_insns): Remove outdated comment.
	(schedule_block): When computing a known value for TODO_SPEC,
	just set it rather than using logical operations.
	(try_ready): Likewise.  Use a local variable rather than a
	pointer to TODO_SPEC.  Reorder an if statement to move the
	easy case to the then block.
	* sched-deps.c (dep_spec_p): New static function.
	(update_dep): Use it to decide whether to call
	change_spec_dep_to_hard.
	(get_back_and_forw_lists): Use it.
	(sd_resolve_dep): Likewise.
	(init_dep): If !USE_DEPS_LIST, use zero to initialize status.
	(haifa_note_mem_dep): Likewise.
	(check_dep): Likewise.
	(sd_add_dep): Also clear SPECULATIVE bits if not DO_SPECULATION.
	(sched_free_deps): Free in two passes.

From-SVN: r176271