-
-/* The following hooks are documented in langhooks.c. Must not be
- NULL. */
-
-struct lang_hooks_for_tree_inlining
-{
- union tree_node *(*walk_subtrees) PARAMS ((union tree_node **, int *,
- union tree_node *(*)
- (union tree_node **,
- int *, void *),
- void *, void *));
- int (*cannot_inline_tree_fn) PARAMS ((union tree_node **));
- int (*disregard_inline_limits) PARAMS ((union tree_node *));
- union tree_node *(*add_pending_fn_decls) PARAMS ((void*, union tree_node *));
- int (*tree_chain_matters_p) PARAMS ((union tree_node *));
- int (*auto_var_in_fn_p) PARAMS ((union tree_node *, union tree_node *));
- union tree_node *(*copy_res_decl_for_inlining) PARAMS ((union tree_node *,
- union tree_node *,
- union tree_node *,
- void *, int *,
- void *));
- int (*anon_aggr_type_p) PARAMS ((union tree_node *));
-};
-
-/* Language-specific hooks. See langhooks.h for defaults. */
-
-struct lang_hooks
-{
- /* Called first, to initialize the front end. */
- void (*init) PARAMS ((void));
-
- /* Called last, as a finalizer. */
- void (*finish) PARAMS ((void));
-
- /* Called to initialize options, before any calls to decode_option. */
- void (*init_options) PARAMS ((void));
-
- /* Function called with an option vector as argument, to decode a
- single option (typically starting with -f or -W or +). It should
- return the number of command-line arguments it uses if it handles
- the option, or 0 and not complain if it does not recognise the
- option. If this function returns a negative number, then its
- absolute value is the number of command-line arguments used, but,
- in addition, no language-independent option processing should be
- done for this option. */
- int (*decode_option) PARAMS ((int, char **));
-
- /* Called when all command line options have been processed. */
- void (*post_options) PARAMS ((void));
-
- /* Nonzero if TYPE_READONLY and TREE_READONLY should always be honored. */
- bool honor_readonly;
-
- struct lang_hooks_for_tree_inlining tree_inlining;
-
- /* Whenever you add entries here, make sure you adjust langhooks.h
- and langhooks.c accordingly. */
-};
-
-/* Each front end provides its own. */
-extern struct lang_hooks lang_hooks;
+extern const char *aux_base_name;
+extern const char *aux_info_file_name;
+extern const char *asm_file_name;
+extern bool exit_after_options;
+extern bool version_flag;
+
+extern int target_flags_explicit;
+
+/* See toplev.c. */
+extern int flag_loop_optimize;
+extern int flag_crossjumping;
+extern int flag_if_conversion;
+extern int flag_if_conversion2;
+extern int flag_keep_static_consts;
+extern int flag_peel_loops;
+extern int flag_rerun_cse_after_loop;
+extern int flag_thread_jumps;
+extern int flag_tracer;
+extern int flag_unroll_loops;
+extern int flag_unroll_all_loops;
+extern int flag_unswitch_loops;
+extern int flag_cprop_registers;
+extern int time_report;
+extern int flag_new_regalloc;
+extern int flag_tree_based_profiling;
+
+/* Things to do with target switches. */
+extern void display_target_options (void);
+extern void print_version (FILE *, const char *);
+extern void set_target_switch (const char *);
+extern void * default_get_pch_validity (size_t *);
+extern const char * default_pch_valid_p (const void *, size_t);