if (VM.VerifyAssertions) VM.assert(index <= bcLength);
if (VM.VerifyAssertions) VM._assert(index <= bcLength);
  private final int getSignedInt(int index) {    if (VM.VerifyAssertions) VM.assert(index <= bcLength);    int i = bcodes[index++] << 24;    i |= (bcodes[index++] & 0xFF) << 16;    i |= (bcodes[index++] & 0xFF) << 8;    i |= (bcodes[index] & 0xFF);    return i;  }