* cgraph.c (cgraph_node::can_remove_if_no_direct_calls_p): Rewrite
	for correct comdat handling.
	(cgraph_node::will_be_removed_from_program_if_no_direct_calls_p):
	Likewise.
	* cgraph.h (call_for_symbol_and_aliases): Fix formating.
	(used_from_object_file_p_worker): Remove.
	(cgraph_node::only_called_directly_or_alised): Add
	used_from_object_file_p.
	* ipa-inline-analysis.c (growth_likely_positive): Optimie.
	* ipa-inline-transform.c (can_remove_node_now_p_1): Use
	can_remove_if_no_direct_calls_and_refs_p.

From-SVN: r221193