*** old/src/share/vm/ci/ciValueKlass.hpp	Fri Dec  2 14:22:05 2016
--- new/src/share/vm/ci/ciValueKlass.hpp	Fri Dec  2 14:22:05 2016

*** 46,56 ****
--- 46,62 ----
  
    // Value type factory parameters
    int       param_count() const;
    int       param_size();
  
-   // Value type fields ('index' refers to the value factory parameter index)
+   //
+   // The term index refers to the index in the VM's constant pool
+   // (i.e., to the value returned by fieldDescriptor::index()).
+   // Argument index refers to a field's index in the value factory
+   // parameter mapping.
+   int       field_index_for_argument(int arg_index);
    int       get_field_count() { return nof_nonstatic_fields(); }
    int       get_field_index_by_offset(int offset);
    int       get_field_offset_by_index(int index) const;
    ciType*   get_field_type_by_index(int index);
    int       get_first_field_offset() const;