Function testPolymorphicStores

deps/v8/test/mjsunit/polymorph-arrays.js:109–179

()

}

function testPolymorphicStores() {
  function make_polymorphic_store_function() {
    function store(a, i, val) {
      a[i] = val;
    }
    %PrepareFunctionForOptimization(store);

    var object_array = new Object;
    var sparse_object_array = new Object;
    var js_array = new Array(10);
    var sparse_js_array = [];
    sparse_js_array.length = 200001;

    init_array(object_array);
    init_array(js_array);
    init_sparse_array(sparse_object_array);
    init_sparse_array(sparse_js_array);

    store(object_array, 1, 256);
    store(js_array, 1, 256);
    store(sparse_object_array, 1, 256);
    store(sparse_js_array, 1, 256);

    return store;
  }

  var object_array = new Object;
  var sparse_object_array = new Object;
  var js_array = new Array(10);
  var sparse_js_array = %NormalizeElements([]);
  sparse_js_array.length = 200001;
  assertTrue(%HasDictionaryElements(sparse_js_array));

  init_array(object_array);
  init_array(js_array);
  init_sparse_array(sparse_object_array);
  init_sparse_array(sparse_js_array);

  store = make_polymorphic_store_function();
  store(object_array, 2, 257);
  store = make_polymorphic_store_function();
  store(js_array, 2, 257);
  store = make_polymorphic_store_function();
  store(sparse_object_array, 2, 257);
  store = make_polymorphic_store_function();
  store(sparse_js_array, 2, 257);

  assertEquals(257, object_array[2]);
  assertEquals(257, js_array[2]);
  assertEquals(257, sparse_js_array[2]);
  assertEquals(257, sparse_object_array[2]);

  // Now try Crankshaft optimized polymorphic stores
  store = make_polymorphic_store_function();
  %OptimizeFunctionOnNextCall(store);
  store(object_array, 3, 258);
  store = make_polymorphic_store_function();
  %OptimizeFunctionOnNextCall(store);