2009-07-05  H.J. Lu  <hongjiu.lu@intel.com>

	* call.c (standard_conversion): Support IFUNC member function.
	* class.c (resolve_address_of_overloaded_function): Likewise.

	* cp-tree.h (TYPE_PTRMEMIFUNC_P): New.

	* typeck.c (cp_build_unary_op): Take the address of non-static
	overloaded member function for IFUNC member function.

2009-06-28  H.J. Lu  <hongjiu.lu@intel.com>

	PR c/40528
	* typeck.c (cp_build_unary_op): Take the address of non-static
	member function for IFUNC member function.
	(check_return_expr): Use function_return_type to get function
	return type.

	* decl.c (check_function_type): Change return type to bool.
	Return true if the function type is changed to void. 
	(wrapup_globals_for_namespace): Check undefined IFUNC symbols. 
	(duplicate_decls): Only allow IFUNC attribute on definition.
	Merge the IFUNC information.
	(start_preparsed_function): Use function_return_type to build
	the return declaration for the function if its type isn't
	changed to void.
	(finish_function): Use function_return_type to get function
	return type.  Issue an error if control reaches end of IFUNC
	function.