2010-09-29  Richard Guenther  <rguenther@suse.de>

	* tree.h (SCOPE_FILE_SCOPE_P): New macro.
	(DECL_FILE_SCOPE_P): Use it.
	(TYPE_FILE_SCOPE_P): New macro.

        cp/
	* cp-tree.h (CP_DECL_CONTEXT): Check DECL_FILE_SCOPE_P.
	(CP_TYPE_CONTEXT): Similar.
	(FROB_CONTEXT): Frob global_namespace to the global
	TRANSLATION_UNIT_DECL.
	* decl.c (cxx_init_decl_processing): Build a TRANSLATION_UNIT_DECL,
	set DECL_CONTEXT of global_namespace to it.
	(start_decl): Use CP_DECL_CONTEXT and test TYPE_P
	instead of zeroing context.
	(cp_finish_decl): Use DECL_FILE_SCOPE_P.
	(grokfndecl): Likewise.
	(start_preparsed_function): Likewise.
	* name-lookup.c (maybe_push_decl): Use DECL_NAMESPACE_SCOPE_P.
	(namespace_binding): Use SCOPE_FILE_SCOPE_P.
	* pt.c (template_class_depth): Use CP_TYPE_CONTEXT.
	(is_specialization_of_friend): Use CP_DECL_CONTEXT.
	(push_template_decl_real): Likewise.
	(tsubst_friend_class): Likewise.  Adjust context comparisons.
	(instantiate_class_template): Use CP_TYPE_CONTEXT.
	(tsubst): Do not substitute into TRANSLATION_UNIT_DECL.
	* cxx-pretty-print.c (pp_cxx_nested_name_specifier): Use
	SCOPE_FILE_SCOPE_P.

From-SVN: r164719