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