if (VM.VerifyAssertions && VM.runningVM) VM.assert(VM.NOT_REACHED);
if (VM.VerifyAssertions && VM.runningVM) VM._assert(VM.NOT_REACHED);
  public int toInt () {    if (VM.VerifyAssertions && VM.runningVM) VM.assert(VM.NOT_REACHED);  // call site should have been hijacked by magic in compiler    return value;  }