(const_tree, const_tree, const_tree);
extern bool hook_bool_const_rtx_commutative_p (const_rtx, int);
extern rtx default_function_value (const_tree, const_tree, bool);
+extern rtx default_libcall_value (enum machine_mode, rtx);
extern rtx default_internal_arg_pointer (void);
extern enum reg_class default_branch_target_register_class (void);
#ifdef IRA_COVER_CLASSES