+
+extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false
+ (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
+extern bool hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
+ (CUMULATIVE_ARGS *, enum machine_mode, const_tree, bool);
+extern int hook_int_CUMULATIVE_ARGS_mode_tree_bool_0
+ (CUMULATIVE_ARGS *, enum machine_mode, tree, bool);
+extern const char *hook_invalid_arg_for_unprototyped_fn
+ (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, const_rtx);
+extern bool default_function_value_regno_p (const unsigned int);
+extern rtx default_internal_arg_pointer (void);
+extern rtx default_static_chain (const_tree, bool);
+extern void default_trampoline_init (rtx, tree, rtx);
+extern enum reg_class default_branch_target_register_class (void);
+#ifdef IRA_COVER_CLASSES
+extern const enum reg_class *default_ira_cover_classes (void);
+#endif
+extern enum reg_class default_secondary_reload (bool, rtx, enum reg_class,
+ enum machine_mode,
+ secondary_reload_info *);
+extern void hook_void_bitmap (bitmap);
+extern bool default_handle_c_option (size_t, const char *, int);
+extern int default_reloc_rw_mask (void);
+extern tree default_mangle_decl_assembler_name (tree, tree);
+extern tree default_emutls_var_fields (tree, tree *);
+extern tree default_emutls_var_init (tree, tree, tree);
+extern bool default_hard_regno_scratch_ok (unsigned int);
+extern bool default_target_option_valid_attribute_p (tree, tree, tree, int);
+extern bool default_target_option_pragma_parse (tree, tree);
+extern bool default_target_can_inline_p (tree, tree);
+extern bool default_valid_pointer_mode (enum machine_mode);
+extern enum machine_mode default_addr_space_pointer_mode (addr_space_t);
+extern enum machine_mode default_addr_space_address_mode (addr_space_t);
+extern bool default_addr_space_valid_pointer_mode (enum machine_mode,
+ addr_space_t);
+extern bool default_addr_space_legitimate_address_p (enum machine_mode, rtx,
+ bool, addr_space_t);
+extern rtx default_addr_space_legitimize_address (rtx, rtx, enum machine_mode,
+ addr_space_t);
+extern bool default_addr_space_subset_p (addr_space_t, addr_space_t);
+extern rtx default_addr_space_convert (rtx, tree, tree);
+extern unsigned int default_case_values_threshold (void);
+extern bool default_have_conditional_execution (void);