Function test

deps/v8/test/mjsunit/compiler/array-subclass.js:13–22

(foo)

  function foo() { return new A; }

  function test(foo) {
    %PrepareFunctionForOptimization(foo);
    assertInstanceof(foo(), A);
    assertEquals(0, foo().length);
    assertInstanceof(foo(), A);
    assertEquals(0, foo().length);
    %OptimizeFunctionOnNextCall(foo);
    assertInstanceof(foo(), A);
    assertEquals(0, foo().length);
  }
  test(foo);

  // Non-extensible