*** old/src/share/vm/opto/phase.hpp	Fri Jun 13 09:30:26 2014
--- new/src/share/vm/opto/phase.hpp	Fri Jun 13 09:30:25 2014

*** 25,35 ****
--- 25,37 ----
  #ifndef SHARE_VM_OPTO_PHASE_HPP
  #define SHARE_VM_OPTO_PHASE_HPP
  
  #include "runtime/timer.hpp"
  
! class Compile;
! class MergeMemNode;
+ class IfNode;
+ class PhaseGVN;
  
  //------------------------------Phase------------------------------------------
  // Most optimizations are done in Phases.  Creating a phase does any long
  // running analysis required, and caches the analysis in internal data
  // structures.  Later the analysis is queried using transform() calls to

*** 112,124 ****
--- 114,137 ----
  
  // Subtimers for _t_output
    static elapsedTimer   _t_instrSched;
    static elapsedTimer   _t_buildOopMaps;
  #endif
+ 
+   // Generate a subtyping check.  Takes as input the subtype and supertype.
+   // Returns 2 values: sets the default control() to the true path and
+   // returns the false path.  Only reads from constant memory taken from the
+   // default memory; does not write anything.  It also doesn't take in an
+   // Object; if you wish to check an Object you need to load the Object's
+   // class prior to coming here.
+   // Used in GraphKit and PhaseMacroExpand
+   static Node* gen_subtype_check(Node* subklass, Node* superklass, Node** ctrl, MergeMemNode* mem, PhaseGVN* gvn);
+ 
  public:
    Compile * C;
    Phase( PhaseNumber pnum );
+ 
  #ifndef PRODUCT
    static void print_timers();
  #endif
  };