src/share/vm/ci/ciTypeFlow.hpp

*** 120,129 ****
--- 120,134 ----
      // Apply the effect of a single bytecode to the JsrSet.
      void apply_control(ciTypeFlow* analyzer,
                         ciBytecodeStream* str,
                         StateVector* state);
  
+     // Bring this JsrSet into agreement with this state by removing
+     // any JsrRecords that refer to addresses no longer mentioned in
+     // the state.
+     void apply_state(StateVector* state);
+ 
      // What is the cardinality of this set?
      int size() const { return _set->length(); }
  
      void print_on(outputStream* st) const PRODUCT_RETURN;
    };
*** 628,637 ****
--- 633,646 ----
      // Copy the value of our JsrSet into another
      void copy_jsrs_into(JsrSet* copy) const {
        _jsrs->copy_into(copy);
      }
  
+     // Remove dead address from the state and also from the JsrSet.
+     // The reduces useless cloning for complex jsr/ret constructs.
+     bool delete_dead_addresses();
+ 
      // Meets the start state of this block with another state, destructively
      // modifying this one.  Returns true if any modification takes place.
      bool meet(const StateVector* incoming) {
        return state()->meet(incoming);
      }