public static OPT_MethodSummary findOrCreateMethodSummary (VM_Method m) {
public static synchronized OPT_MethodSummary findOrCreateMethodSummary (VM_Method m) {
  public static OPT_MethodSummary findOrCreateMethodSummary (VM_Method m) {    OPT_MethodSummary result = findMethodSummary(m);    if (result == null) {      result = new OPT_MethodSummary(m);      hash.put(m, result);    }    return  result;  }