* class.c (check_methods, create_vtable_ptr, determine_key_method,
	add_vcall_offset_vtbl_entries_1): Guard VINDEX checks by FUNCTION_DECL check.
	* cp-tree.h (lang_decl_ns): Add ns_using and ns_users.
	(DECL_NAMESPACE_USING, DECL_NAMESPACE_USERS): Use lang_decl_ns.
	(DECL_NAMESPACE_ASSOCIATIONS): Use DECL_INITIAL.
	(DECL_TEMPLATE_INSTANTIATIONS): Use DECL_SIZE_UNIT.
	* tree.c (find_decls_types_r): Do not check DECL_VINDEX for TYPE_DECL.
	* tree.h (DECL_VINDEX, DECL_SAVED_TREE): Restrict to DECL_FUNCTION.
	* tree-core.h (tree_decl_non_common): Move saved_tree and vindex...
	(tree_function_decl): ... here.
	* tree-streamer-out.c (write_ts_decl_non_common_tree_pointers): Move
	streaming of vindex to ...
	(write_ts_function_decl_tree_pointers): ... here.

	* tree-streamer-in.c (lto_input_ts_decl_non_common_tree_pointers):
	Do not stream DECL_VINDEX.
	(lto_input_ts_function_decl_tree_pointers): Stream it here.

	* lto.c (mentions_vars_p_decl_non_common): Move DECL_VINDEX check to ..
	(mentions_vars_p_function): ... here.
	(compare_tree_sccs_1): Update VINDEX checks.
	(lto_fixup_prevailing_decls): Likewise.

From-SVN: r211960