--- a/hotspot/src/share/vm/opto/compile.hpp	Fri Jul 18 09:04:01 2014 +0200
+++ b/hotspot/src/share/vm/opto/compile.hpp	Fri Jul 25 10:06:17 2014 +0200
@@ -344,6 +344,8 @@
   VectorSet             _dead_node_list;        // Set of dead nodes
   uint                  _dead_node_count;       // Number of dead nodes; VectorSet::Size() is O(N).
                                                 // So use this to keep count and make the call O(1).
+  DEBUG_ONLY( Unique_Node_List* _modified_nodes; )  // List of nodes which inputs were modified
+
   debug_only(static int _debug_idx;)            // Monotonic counter (not reset), use -XX:BreakAtNode=<idx>
   Arena                 _node_arena;            // Arena for new-space Nodes
   Arena                 _old_arena;             // Arena for old-space Nodes, lifetime during xform
@@ -766,6 +768,11 @@
   void         print_missing_nodes();
 #endif
 
+  // Record modified nodes to check that they are put on IGVN worklist
+  void         record_modified_node(Node* n) NOT_DEBUG_RETURN;
+  void         remove_modified_node(Node* n) NOT_DEBUG_RETURN;
+  DEBUG_ONLY( Unique_Node_List*   modified_nodes() const { return _modified_nodes; } )
+
   // Constant table
   ConstantTable&   constant_table() { return _constant_table; }