dec_irg_block_visited() added

[libfirm] / ir / ir / irgraph_t.h

diff --git a/ir/ir/irgraph_t.h b/ir/ir/irgraph_t.h
index 2bfc530..8c57cea 100644 (file)
--- a/ir/ir/irgraph_t.h
+++ b/ir/ir/irgraph_t.h
@@ -87,6 +87,8 @@ struct ir_graph {
   ir_node *current_block;        /**< block for newly gen_*()-erated ir_nodes */
   struct obstack *extbb_obst;    /**< obstack for extended basic block info */
 
+  unsigned last_node_idx;        /**< last IR node index for this graph */
+
   /* -- Fields for graph properties -- */
   irg_inline_property inline_property;     /**< How to handle inlineing. */
   unsigned additional_properties;          /**< additional graph properties. */
@@ -514,11 +516,35 @@ _inc_irg_block_visited(ir_graph *irg) {
   ++irg->block_visited;
 }
 
+static INLINE void
+_dec_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;
 }
 
+/**
+ * Returns the next IR node index for the given graph.
+ */
+static INLINE unsigned
+get_irg_next_node_idx(ir_graph *irg) {
+  return irg->last_node_idx++;
+}
+
+/**
+ * Kill a node from the irg. BEWARE: this kills
+ * all later created nodes.
+ */
+static INLINE void
+irg_kill_node(ir_graph *irg, ir_node *n) {
+  if (get_irn_idx(n) + 1 == irg->last_node_idx)
+    --irg->last_node_idx;
+  obstack_free(irg->obst, n);
+}
+
 #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)
@@ -577,6 +603,7 @@ _get_irg_estimated_node_cnt(const 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 dec_irg_block_visited(irg)            _dec_irg_block_visited(irg)
 #define get_irg_estimated_node_cnt(irg)       _get_irg_estimated_node_cnt(irg)
 
 # endif /* _IRGRAPH_T_H_ */