*** old/src/share/vm/utilities/growableArray.hpp	Tue Dec  1 18:28:28 2009
--- new/src/share/vm/utilities/growableArray.hpp	Tue Dec  1 18:28:28 2009

*** 180,189 ****
--- 180,200 ----
  
    void append_if_missing(const E& elem) {
      if (!contains(elem)) append(elem);
    }
  
+   // inserts the given element before the element at index i
+   void insert_before(const int idx, const E& elem) {
+     check_nesting();
+     if (_len == _max) grow(_len);
+     for (int j = _len - 1; j >= idx; j--) {
+       _data[j + 1] = _data[j];
+     }
+     _len++;
+     _data[idx] = elem;
+   }
+ 
    E at(int i) const {
      assert(0 <= i && i < _len, "illegal index");
      return _data[i];
    }