* tree.c (verify_type_variant): Fix #undef.
	(gimple_canonical_types_compatible_p): Move here from lto.c
	(verify_type): Verify TYPE_CANONICAL compatibility.
	* tree.h (gimple_canonical_types_compatible_p): Declare.

	* lto.c (gimple_canonical_types_compatible_p): Move to tree.c

From-SVN: r223391