Reorganize per-function data.

	* cp-tree.h (saved_scope): Add function_decl, bindings.
	(language_function): Rename binding_level to bindings.
	(cp_function_chain): Use the current_function, not the
	outer_function_chain.
	(current_class_ptr): Make it work, even when there's no
	current function.
	(current_class_ref): Likewise.
	(SF_DEFAULT, SF_PRE_PARSED, SF_INCLASS_INLINE, SF_EXPAND): New
	macros.
	(clear_temp_name): Remove.
	* decl.c (check_function_type): New function, broken out from
	start_function.
	(current_binding_level): Adjust definition.
	(pushlevel): Simplify.
	(poplevel): Don't use named_label_uses when we're outside
	a function scope.
	(mark_saved_scope): Mark function_decl and bindings.
	(maybe_push_to_top_level): Don't unconditionally push a new
	function context.  Save bindings and the current_function_decl.
	Don't clear named_labels.
	(pop_from_top_level): Pop function context if appropriate.
	(init_decl_processing): Set init_lang_status and free_lang_status,
	rather than save_lang_status and restore_lang_status.
	(start_function): Take SF_* flags.  Don't clear per-function data.
	Reorder and simplify to use new per-function data code.  Add
	asserts.
	(store_parm_decls): Don't call init_function_start here.
	(finish_function): Adjust for new handling of per-function data.
	(push_cp_function_context): Simplify.
	(mark_cp_function_context): Change binding_level to bindings.
	* decl2.c (clear_temp_name): Remove.
	(start_objects): Use SF flags to start_function.
	(start_static_storage_duration_function): Likewise.
	* except.c (start_anon_func): Remove redundant calls to
	push_function_context_to.  Use SF flags to start function.
	(end_anon_func): Remove redundant call to pop_function_context
	from.
	* lex.c (reinit_parse_for_function): Don't initialize per-function
	data.
	* method.c (emit_thunk): Clear current_function after calling
	assemble_end_function.  Use SF flags for start_function.
	(synthesize_method): Use SF flags for start_function.
	* parse.c: Regenerated.
	* parse.y (fn.defpen): Likewise.
	(pending_inline): Clear current_function, even if something goes
	wrong.
	* pt.c (instantiate_decl): Use SF flags to start_function.
	Don't save and restore expanding_p.
	(add_tree): Handle the case where we are outside any function.
	(end_tree): Likewise.
	* rtti.c (sythesize_tinfo_fn): Use SF flags to start_function.
	* semantics.c (begin_function_definition): Likewise.
	(expand_body): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@29240 138bc75d-0d04-0410-961f-82ee72b054a4

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