-struct rtx_def *ggc_alloc_rtx PROTO ((int nslots));
-struct rtvec_def *ggc_alloc_rtvec PROTO ((int nelt));
-union tree_node *ggc_alloc_tree PROTO ((int length));
-char *ggc_alloc_string PROTO ((const char *contents, int length));
-
-/* Invoke the collector. This is really just a hint, but in the case of
- the simple collector, the only time it will happen. */
-
-void ggc_collect PROTO ((void));
-
-/* Manipulate global roots that are needed between calls to gc. */
-void ggc_add_root PROTO ((void *base, int nelt, int size,
- void (*)(void *)));
-void ggc_add_rtx_root PROTO ((struct rtx_def **, int nelt));
-void ggc_add_tree_root PROTO ((union tree_node **, int nelt));
-void ggc_add_tree_varray_root PROTO ((struct varray_head_tag **, int nelt));
-void ggc_add_tree_hash_table_root PROTO ((struct hash_table **, int nelt));
-void ggc_del_root PROTO ((void *base));
-
-/* Mark nodes from the gc_add_root callback. */
-void ggc_mark_rtx PROTO ((struct rtx_def *));
-void ggc_mark_rtvec PROTO ((struct rtvec_def *));
-void ggc_mark_tree PROTO ((union tree_node *));
-void ggc_mark_tree_varray PROTO ((struct varray_head_tag *));
-void ggc_mark_tree_hash_table PROTO ((struct hash_table *));
-void ggc_mark_string PROTO ((char *));
-
-/* Callbacks to the languages. */
-
-/* This is the language's opportunity to mark nodes held through
- the lang_specific hooks in the tree. */
-void lang_mark_tree PROTO ((union tree_node *));
-
-/* And similarly to free that data when the tree node is released. */
-void lang_cleanup_tree PROTO ((union tree_node *));
-
-/* The FALSE_LABEL_STACK, declared in except.h, has
- language-dependent semantics. Each front-end should define this
- function appropriately. */
-void lang_mark_false_label_stack PROTO ((struct label_node *));
-
-/* Mark functions for various structs scattered about. */
-
-void mark_eh_state PROTO ((struct eh_status *));
-void mark_stmt_state PROTO ((struct stmt_status *));
-void mark_emit_state PROTO ((struct emit_status *));
-void mark_varasm_state PROTO ((struct varasm_status *));
-void mark_optab PROTO ((void *));
+/* When set, ggc_collect will do collection. */
+extern bool ggc_force_collect;
+
+/* When true, identifier nodes are considered as GC roots. When
+ false, identifier nodes are treated like any other GC-allocated
+ object, and the identifier hash table is treated as a weak
+ hash. */
+extern bool ggc_protect_identifiers;
+
+/* The internal primitive. */
+extern void *ggc_alloc_stat (size_t MEM_STAT_DECL);
+#define ggc_alloc(s) ggc_alloc_stat (s MEM_STAT_INFO)
+/* Allocate an object of the specified type and size. */
+extern void *ggc_alloc_typed_stat (enum gt_types_enum, size_t MEM_STAT_DECL);
+#define ggc_alloc_typed(s,z) ggc_alloc_typed_stat (s,z MEM_STAT_INFO)
+/* Like ggc_alloc, but allocates cleared memory. */
+extern void *ggc_alloc_cleared_stat (size_t MEM_STAT_DECL);
+#define ggc_alloc_cleared(s) ggc_alloc_cleared_stat (s MEM_STAT_INFO)
+/* Resize a block. */
+extern void *ggc_realloc_stat (void *, size_t MEM_STAT_DECL);
+#define ggc_realloc(s,z) ggc_realloc_stat (s,z MEM_STAT_INFO)
+/* Like ggc_alloc_cleared, but performs a multiplication. */
+extern void *ggc_calloc (size_t, size_t);
+/* Free a block. To be used when known for certain it's not reachable. */
+extern void ggc_free (void *);
+
+extern void ggc_record_overhead (size_t, size_t, void * MEM_STAT_DECL);
+extern void ggc_free_overhead (void *);
+extern void ggc_prune_overhead_list (void);
+
+extern void dump_ggc_loc_statistics (bool);
+
+/* Type-safe, C++-friendly versions of ggc_alloc() and gcc_calloc(). */
+#define GGC_NEW(T) ((T *) ggc_alloc (sizeof (T)))
+#define GGC_CNEW(T) ((T *) ggc_alloc_cleared (sizeof (T)))
+#define GGC_NEWVEC(T, N) ((T *) ggc_alloc ((N) * sizeof(T)))
+#define GGC_CNEWVEC(T, N) ((T *) ggc_alloc_cleared ((N) * sizeof(T)))
+#define GGC_RESIZEVEC(T, P, N) ((T *) ggc_realloc ((P), (N) * sizeof (T)))
+#define GGC_NEWVAR(T, S) ((T *) ggc_alloc ((S)))
+#define GGC_CNEWVAR(T, S) ((T *) ggc_alloc_cleared ((S)))
+#define GGC_RESIZEVAR(T, P, N) ((T *) ggc_realloc ((P), (N)))
+
+#define ggc_alloc_rtvec(NELT) \
+ ((rtvec) ggc_alloc_zone (sizeof (struct rtvec_def) + ((NELT) - 1) \
+ * sizeof (rtx), &rtl_zone))
+
+#define ggc_alloc_tree(LENGTH) ((tree) ggc_alloc_zone (LENGTH, &tree_zone))
+
+#define htab_create_ggc(SIZE, HASH, EQ, DEL) \
+ htab_create_alloc (SIZE, HASH, EQ, DEL, ggc_calloc, ggc_free)
+
+#define splay_tree_new_ggc(COMPARE) \
+ splay_tree_new_with_allocator (COMPARE, NULL, NULL, \
+ &ggc_splay_alloc, &ggc_splay_dont_free, \
+ NULL)
+extern void *ggc_splay_alloc (int, void *);
+extern void ggc_splay_dont_free (void *, void *);
+
+/* Allocate a gc-able string, and fill it with LENGTH bytes from CONTENTS.
+ If LENGTH is -1, then CONTENTS is assumed to be a
+ null-terminated string and the memory sized accordingly. */
+extern const char *ggc_alloc_string (const char *contents, int length);
+
+/* Make a copy of S, in GC-able memory. */
+#define ggc_strdup(S) ggc_alloc_string((S), -1)
+
+/* Invoke the collector. Garbage collection occurs only when this
+ function is called, not during allocations. */
+extern void ggc_collect (void);
+
+/* Register an additional root table. This can be useful for some
+ plugins. Does nothing if the passed pointer is NULL. */
+extern void ggc_register_root_tab (const struct ggc_root_tab *);
+
+/* Register an additional cache table. This can be useful for some
+ plugins. Does nothing if the passed pointer is NULL. */
+extern void ggc_register_cache_tab (const struct ggc_cache_tab *);
+
+/* Return the number of bytes allocated at the indicated address. */
+extern size_t ggc_get_size (const void *);
+
+/* Write out all GCed objects to F. */
+extern void gt_pch_save (FILE *f);
+
+/* Read objects previously saved with gt_pch_save from F. */
+extern void gt_pch_restore (FILE *f);
+\f
+/* Statistics. */
+
+/* This structure contains the statistics common to all collectors.
+ Particular collectors can extend this structure. */
+typedef struct ggc_statistics
+{
+ /* At present, we don't really gather any interesting statistics. */
+ int unused;
+} ggc_statistics;
+
+/* Used by the various collectors to gather and print statistics that
+ do not depend on the collector in use. */
+extern void ggc_print_common_statistics (FILE *, ggc_statistics *);
+
+/* Print allocation statistics. */
+extern void ggc_print_statistics (void);
+extern void stringpool_statistics (void);
+
+/* Heuristics. */
+extern int ggc_min_expand_heuristic (void);
+extern int ggc_min_heapsize_heuristic (void);
+extern void init_ggc_heuristics (void);
+
+/* Zone collection. */
+#if defined (GGC_ZONE) && !defined (GENERATOR_FILE)
+
+/* For regular rtl allocations. */
+extern struct alloc_zone rtl_zone;
+/* For regular tree allocations. */
+extern struct alloc_zone tree_zone;
+/* For IDENTIFIER_NODE allocations. */
+extern struct alloc_zone tree_id_zone;
+
+/* Allocate an object into the specified allocation zone. */
+extern void *ggc_alloc_zone_stat (size_t, struct alloc_zone * MEM_STAT_DECL);
+# define ggc_alloc_zone(s,z) ggc_alloc_zone_stat (s,z MEM_STAT_INFO)
+# define ggc_alloc_zone_pass_stat(s,z) ggc_alloc_zone_stat (s,z PASS_MEM_STAT)
+#else
+
+# define ggc_alloc_zone(s, z) ggc_alloc (s)
+# define ggc_alloc_zone_pass_stat(s, z) ggc_alloc_stat (s PASS_MEM_STAT)
+
+#endif
+
+#endif