+ (const_tree, const_tree, const_tree);
+extern void default_function_arg_advance
+ (cumulative_args_t, enum machine_mode, const_tree, bool);
+extern rtx default_function_arg
+ (cumulative_args_t, enum machine_mode, const_tree, bool);
+extern rtx default_function_incoming_arg
+ (cumulative_args_t, enum machine_mode, const_tree, bool);
+extern unsigned int default_function_arg_boundary (enum machine_mode,
+ const_tree);
+extern unsigned int default_function_arg_round_boundary (enum machine_mode,
+ 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 int default_return_pops_args (tree, tree, int);
+extern reg_class_t default_branch_target_register_class (void);
+extern reg_class_t default_secondary_reload (bool, rtx, reg_class_t,
+ enum machine_mode,
+ secondary_reload_info *);
+extern void default_target_option_override (void);
+extern void hook_void_bitmap (bitmap);
+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_mode_dependent_address_p (const_rtx addr);
+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 bool default_ref_may_alias_errno (struct ao_ref_s *);
+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);
+
+extern tree default_builtin_tm_load_store (tree);
+
+extern int default_memory_move_cost (enum machine_mode, reg_class_t, bool);
+extern int default_register_move_cost (enum machine_mode, reg_class_t,
+ reg_class_t);
+
+extern bool default_profile_before_prologue (void);
+extern reg_class_t default_preferred_reload_class (rtx, reg_class_t);
+extern reg_class_t default_preferred_output_reload_class (rtx, reg_class_t);
+extern reg_class_t default_preferred_rename_class (reg_class_t rclass);
+extern bool default_class_likely_spilled_p (reg_class_t);
+extern unsigned char default_class_max_nregs (reg_class_t, enum machine_mode);
+
+extern enum unwind_info_type default_debug_unwind_info (void);
+
+extern int default_label_align_after_barrier_max_skip (rtx);
+extern int default_loop_align_max_skip (rtx);
+extern int default_label_align_max_skip (rtx);
+extern int default_jump_align_max_skip (rtx);
+extern section * default_function_section(tree decl, enum node_frequency freq,
+ bool startup, bool exit);
+extern enum machine_mode default_get_reg_raw_mode(int);
+
+extern void *default_get_pch_validity (size_t *);
+extern const char *default_pch_valid_p (const void *, size_t);