* class.c (layout_class_type): Set TYPE_CXX_ODR_P for as-base
	type copy.

	* ipa-devirt.c (odr_type_d): Add tbaa_enabled flag.
	(add_type_duplicate): When odr hash is not allocated, to nothing.
	(odr_based_tbaa_p): New function.
	(set_type_canonical_for_odr_type): New function.
	* ipa-utils.h (enable_odr_based_tbaa, odr_based_tbaa_p,
	set_type_canonical_for_odr_type): New.
	* tree.c (gimple_canonical_types_compatible_p): ODR types with
	ODR based TBAA are not equivalent to non-ODR types.

	* lto-common.c: Include demangle.h and tree-pretty-print.h
	(type_streaming_finished): New static var.
	(gimple_register_canonical_type_1): Return updated hash; handle ODR
	types.
	(iterative_hash_canonical_type): Update use of
	gimple_register_canonical_type_1.

	* g++.dg/lto/alias-2_0.C: New testcase.
	* g++.dg/lto/alias-2_1.C: New testcase.

From-SVN: r272749