gistfile1.txt

class TestC2Lilliput {
  private static Object[] foo;
  public static void main(String[] args) throws Exception {
    int idx = Integer.parseInt(args[0]);
    foo = new Object[100];
    foo[idx] = new Object();
    Class cls = test(idx);
    System.out.println(cls);
  }

  static Class test(int idx) {
    return foo[idx].getClass();
  }
}

java -Xcomp -XX:CompileOnly=TestC2Lilliput::test -XX:-TieredCompilation -XX:+PrintAssembly -Xmx20g -XX:HeapBaseMinAddress=100G -Xlog:gc+heap+coops=Debug -XX:+UnlockExperimentalVMOptions -XX:+UseCompactObjectHeaders TestC2Lilliput