tree default_def;
/* During into-ssa and the dominator optimizer, this field holds the
- current version of this variable (an SSA_NAME).
-
- This was previously two varrays (one in into-ssa the other in the
- dominator optimizer). That is wasteful, particularly since the
- dominator optimizer calls into-ssa resulting in having two varrays
- live at the same time and this can happen for each call to the
- dominator optimizer. */
+ current version of this variable (an SSA_NAME). */
tree current_def;
+ /* If this variable is a structure, this fields holds a list of
+ symbols representing each of the fields of the structure. */
subvar_t subvars;
};
#define referenced_var(i) VARRAY_TREE (referenced_vars, i)
/* Array of all SSA_NAMEs used in the function. */
-extern GTY(()) varray_type ssa_names;
+extern GTY(()) VEC(tree,gc) *ssa_names;
-#define num_ssa_names VARRAY_ACTIVE_SIZE (ssa_names)
-#define ssa_name(i) VARRAY_TREE (ssa_names, i)
+#define num_ssa_names (VEC_length (tree, ssa_names))
+#define ssa_name(i) (VEC_index (tree, ssa_names, (i)))
/* Artificial variable used to model the effects of function calls. */
extern GTY(()) tree global_var;
basic_block *);
extern void add_phi_args_after_copy_bb (basic_block);
extern void add_phi_args_after_copy (basic_block *, unsigned);
-extern void rewrite_to_new_ssa_names_bb (basic_block, struct htab *);
-extern void rewrite_to_new_ssa_names (basic_block *, unsigned, htab_t);
-extern void allocate_ssa_names (bitmap, struct htab **);
extern bool tree_purge_dead_eh_edges (basic_block);
extern bool tree_purge_all_dead_eh_edges (bitmap);
extern tree gimplify_val (block_stmt_iterator *, tree, tree);
extern void add_phi_arg (tree, tree, edge);
extern void remove_phi_args (edge);
extern void remove_phi_node (tree, tree);
-extern tree find_phi_node_for (basic_block, tree, tree *);
extern tree phi_reverse (tree);
extern void dump_dfa_stats (FILE *);
extern void debug_dfa_stats (void);
/* In tree-ssa.c */
extern void init_tree_ssa (void);
-extern void dump_tree_ssa (FILE *);
-extern void debug_tree_ssa (void);
-extern void debug_def_blocks (void);
-extern void dump_tree_ssa_stats (FILE *);
-extern void debug_tree_ssa_stats (void);
extern edge ssa_redirect_edge (edge, basic_block);
extern void flush_pending_stmts (edge);
extern bool tree_ssa_useless_type_conversion (tree);
extern bool stmt_references_memory_p (tree);
/* In tree-into-ssa.c */
-extern void rewrite_ssa_into_ssa (void);
-
void update_ssa (unsigned);
+void delete_update_ssa (void);
void register_new_name_mapping (tree, tree);
tree create_new_def_for (tree, tree, def_operand_p);
bool need_ssa_update_p (void);
bool name_registered_for_update_p (tree);
bitmap ssa_names_to_replace (void);
void release_ssa_name_after_update_ssa (tree name);
-void dump_repl_tbl (FILE *);
-void debug_repl_tbl (void);
-void dump_names_replaced_by (FILE *, tree);
-void debug_names_replaced_by (tree);
void compute_global_livein (bitmap, bitmap);
tree duplicate_ssa_name (tree, tree);
void mark_sym_for_renaming (tree);
void mark_set_for_renaming (bitmap);
+tree get_current_def (tree);
+void set_current_def (tree, tree);
/* In tree-ssa-ccp.c */
bool fold_stmt (tree *);
void estimate_numbers_of_iterations (struct loops *);
tree can_count_iv_in_wider_type (struct loop *, tree, tree, tree, tree);
void free_numbers_of_iterations_estimates (struct loops *);
-void rewrite_into_loop_closed_ssa (bitmap);
+void rewrite_into_loop_closed_ssa (bitmap, unsigned);
void verify_loop_closed_ssa (void);
void loop_commit_inserts (void);
bool for_each_index (tree *, bool (*) (tree, tree *, void *), void *);