estimated node count added

[r6912]

ir/ir/irgraph.c

@@ -235,6 +235,7 @@ new_r_ir_graph (entity *ent, int n_loc)
   add_immBlock_pred (first_block, projX);
 
   res->method_execution_frequency = -1;
+  res->estimated_node_count       = 0;
 
   return res;
 }
@@ -809,6 +810,11 @@ void *get_irg_loc_description(ir_graph *irg, int n)
   return irg->loc_descriptions ? irg->loc_descriptions[n] : NULL;
 }
 
+/* Returns a estimated node count of the irg. */
+unsigned (get_irg_estimated_node_cnt)(const ir_graph *irg) {
+  return _get_irg_estimated_node_cnt(irg);
+}
+
 /* register additional space in an IR graph */
 size_t register_additional_graph_data(size_t size)
 {

ir/ir/irgraph.h

@@ -459,6 +459,11 @@ void set_irg_loc_description(ir_graph *irg, int n, void *description);
 /** get the description for local value n */
 void *get_irg_loc_description(ir_graph *irg, int n);
 
+/** Returns a estimated node count of the irg. This count is updated
+ * after every irg_walk_graph().
+ */
+unsigned get_irg_estimated_node_cnt(const ir_graph *irg);
+
 /**
  * Access custom graph data.
  * The data must have been registered with

ir/ir/irgraph_t.h

@@ -135,14 +135,16 @@ struct ir_graph {
                     every time someone walks through
                     the graph */
   unsigned long block_visited;       /**< same as visited, for a complete block */
+  unsigned estimated_node_count;     /**< estimated number of nodes in this graph,
+                                          updated after every walk */
+#if FIRM_EDGES_INPLACE
+  irg_edge_info_t edge_info;  /**< edge info for automatic outs */
+#endif
 #ifdef DEBUG_libfirm
   int graph_nr;             /**< a unique graph number for each graph to make output
                    readable. */
 #endif
 
-#if FIRM_EDGES_INPLACE
-  irg_edge_info_t edge_info;  /**< edge info for automatic outs */
-#endif
 };
 
 /**
@@ -498,6 +500,11 @@ _inc_irg_block_visited(ir_graph *irg) {
   ++irg->block_visited;
 }
 
+static INLINE unsigned
+_get_irg_estimated_node_cnt(const ir_graph *irg) {
+  return irg->estimated_node_count;
+}
+
 #define get_interprocedural_view()            _get_interprocedural_view()
 #define is_ir_graph(thing)                    _is_ir_graph(thing)
 #define get_irg_start_block(irg)              _get_irg_start_block(irg)
@@ -555,5 +562,6 @@ _inc_irg_block_visited(ir_graph *irg) {
 #define get_irg_block_visited(irg)            _get_irg_block_visited(irg)
 #define set_irg_block_visited(irg, v)         _set_irg_block_visited(irg, v)
 #define inc_irg_block_visited(irg)            _inc_irg_block_visited(irg)
+#define get_irg_estimated_node_cnt(irg)       _get_irg_estimated_node_cnt(irg)
 
 # endif /* _IRGRAPH_T_H_ */