--- old/src/share/vm/opto/compile.hpp	2014-03-06 11:59:56.817793433 +0100
+++ new/src/share/vm/opto/compile.hpp	2014-03-06 11:59:56.483666996 +0100
@@ -486,6 +486,7 @@
   RegMask               _FIRST_STACK_mask;      // All stack slots usable for spills (depends on frame layout)
   Arena*                _indexSet_arena;        // control IndexSet allocation within PhaseChaitin
   void*                 _indexSet_free_block_list; // free list of IndexSet bit blocks
+  int                   _interpreter_frame_size;
 
   uint                  _node_bundling_limit;
   Bundle*               _node_bundling_base;    // Information for instruction bundling
@@ -939,6 +940,7 @@
   PhaseRegAlloc*    regalloc()                  { return _regalloc; }
   int               frame_slots() const         { return _frame_slots; }
   int               frame_size_in_words() const; // frame_slots in units of the polymorphic 'words'
+  int               frame_size_in_bytes() const { return _frame_slots << LogBytesPerInt; }
   RegMask&          FIRST_STACK_mask()          { return _FIRST_STACK_mask; }
   Arena*            indexSet_arena()            { return _indexSet_arena; }
   void*             indexSet_free_block_list()  { return _indexSet_free_block_list; }
@@ -950,6 +952,13 @@
   bool          need_stack_bang(int frame_size_in_bytes) const;
   bool          need_register_stack_bang() const;
 
+  void  update_interpreter_frame_size(int size) {
+    if (_interpreter_frame_size < size) {
+      _interpreter_frame_size = size;
+    }
+  }
+  int           bang_size_in_bytes() const;
+
   void          set_matcher(Matcher* m)                 { _matcher = m; }
 //void          set_regalloc(PhaseRegAlloc* ra)           { _regalloc = ra; }
   void          set_indexSet_arena(Arena* a)            { _indexSet_arena = a; }