re PR tree-optimization/62091 (ice in before_dom_children)

re PR tree-optimization/62091 (ice in before_dom_children)

	PR tree-optimization/62091
	* g++.dg/ipa/devirt-37.C: Update template.
	* g++.dg/ipa/devirt-40.C: New testcase.
	* ipa-devirt.c (ipa_polymorphic_call_context::restrict_to_inner_type):
	handle correctly arrays.
	(extr_type_from_vtbl_ptr_store): Add debug output; handle multiple
	inheritance binfos.
	(record_known_type): Walk into inner type.
	(ipa_polymorphic_call_context::get_dynamic_type): Likewise; strenghten
	condition on no type changes.

From-SVN: r214271