Function test

deps/v8/test/mjsunit/elements-transition.js:42–91

(test_double, test_object, set, length)

}

function test(test_double, test_object, set, length) {
  // We apply the same operations to two identical arrays.  The first array
  // triggers an IC miss, upon which the conversion stub is generated, but the
  // actual conversion is done in runtime.  The second array, arriving at
  // the previously patched IC, is then converted using the conversion stub.
  var array_1 = make_array(length);
  var array_2 = make_array(length);

  // false, true, nice setter function, 20
  assertTrue(%HasSmiElements(array_1));
  assertTrue(%HasSmiElements(array_2));
  for (var i = 0; i < length; i++) {
    if (i == length - 5 && test_double) {
      // Trigger conversion to fast double elements at length-5.
      set(array_1, i, 0.5);
      set(array_2, i, 0.5);
      assertTrue(%HasDoubleElements(array_1));
      assertTrue(%HasDoubleElements(array_2));
    } else if (i == length - 3 && test_object) {
      // Trigger conversion to fast object elements at length-3.
      set(array_1, i, 'object');
      set(array_2, i, 'object');
      assertTrue(%HasObjectElements(array_1));
      assertTrue(%HasObjectElements(array_2));
    } else if (i != length - 7) {
      // Set the element to an integer but leave a hole at length-7.
      set(array_1, i, 2*i+1);
      set(array_2, i, 2*i+1);
    }
  }

  for (var i = 0; i < length; i++) {
    if (i == length - 5 && test_double) {
      assertEquals(0.5, array_1[i]);
      assertEquals(0.5, array_2[i]);
    } else if (i == length - 3 && test_object) {
      assertEquals('object', array_1[i]);
      assertEquals('object', array_2[i]);
    } else if (i != length - 7) {
      assertEquals(2*i+1, array_1[i]);
      assertEquals(2*i+1, array_2[i]);
    } else {
      assertEquals(undefined, array_1[i]);
      assertEquals(undefined, array_2[i]);
    }
  }

  assertEquals(length, array_1.length);
  assertEquals(length, array_2.length);
}

function run_test(test_double, test_object, set, length) {
  test(test_double, test_object, set, length);