2007-05-24 H.J. Lu <hongjiu.lu@intel.com>

[pf3gnuchains/gcc-fork.git] / gcc / cfghooks.h

diff --git a/gcc/cfghooks.h b/gcc/cfghooks.h
index fcdc23f..bd7d1b3 100644 (file)
--- a/gcc/cfghooks.h
+++ b/gcc/cfghooks.h
@@ -47,6 +47,10 @@ struct cfg_hooks
      not be abnormal.  */
   basic_block (*redirect_edge_and_branch_force) (edge, basic_block);
 
+  /* Returns true if it is possible to remove the edge by redirecting it
+     to the destination of the other edge going from its source.  */
+  bool (*can_remove_branch_p) (edge);
+
   /* Remove statements corresponding to a given basic block.  */
   void (*delete_basic_block) (basic_block);
 
@@ -111,13 +115,10 @@ struct cfg_hooks
 
   /* A hook for duplicating loop in CFG, currently this is used
      in loop versioning.  */
-  bool (*cfg_hook_duplicate_loop_to_header_edge) (struct loop *loop, edge e,
-                                                 struct loops *loops,
-                                                 unsigned int ndupl,
-                                                 sbitmap wont_exit,
-                                                 edge orig, edge *to_remove,
-                                                 unsigned int *n_to_remove,
-                                                 int flags);
+  bool (*cfg_hook_duplicate_loop_to_header_edge) (struct loop *, edge,
+                                                 unsigned, sbitmap,
+                                                 edge, VEC (edge, heap) **,
+                                                 int);
 
   /* Add condition to new basic block and update CFG used in loop
      versioning.  */
@@ -141,6 +142,8 @@ extern void verify_flow_info (void);
 extern void dump_bb (basic_block, FILE *, int);
 extern edge redirect_edge_and_branch (edge, basic_block);
 extern basic_block redirect_edge_and_branch_force (edge, basic_block);
+extern bool can_remove_branch_p (edge);
+extern void remove_branch (edge);
 extern edge split_block (basic_block, void *);
 extern edge split_block_after_labels (basic_block);
 extern bool move_block_after (basic_block, basic_block);
@@ -164,11 +167,10 @@ extern int flow_call_edges_add (sbitmap);
 extern void execute_on_growing_pred (edge);
 extern void execute_on_shrinking_pred (edge);
 extern bool cfg_hook_duplicate_loop_to_header_edge (struct loop *loop, edge,
-                                                   struct loops *loops,
                                                    unsigned int ndupl,
                                                    sbitmap wont_exit,
-                                                   edge orig, edge *to_remove,
-                                                   unsigned int *n_to_remove,
+                                                   edge orig,
+                                                   VEC (edge, heap) **to_remove,
                                                    int flags);
 
 extern void lv_flush_pending_stmts (edge);
@@ -184,7 +186,7 @@ extern struct cfg_hooks rtl_cfg_hooks;
 extern struct cfg_hooks cfg_layout_rtl_cfg_hooks;
 
 /* Declarations.  */
-extern int ir_type (void);
+extern enum ir_type current_ir_type (void);
 extern void rtl_register_cfg_hooks (void);
 extern void cfg_layout_rtl_register_cfg_hooks (void);
 extern void tree_register_cfg_hooks (void);