[JSPerfTests] New tests for Array.prototype.filter and map.

test/js-perf-test/Array/map.js

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+function benchy(name, test, testSetup) {
+  new BenchmarkSuite(name, [1000],
+      [
+        new Benchmark(name, false, false, 0, test, testSetup, ()=>{})
+      ]);
+}
+
+benchy('NaiveMapReplacement', NaiveMap, NaiveMapSetup);
+benchy('DoubleMap', DoubleMap, DoubleMapSetup);
+benchy('SmiMap', SmiMap, SmiMapSetup);
+benchy('FastMap', FastMap, FastMapSetup);
+benchy('ObjectMap', GenericMap, ObjectMapSetup);
+
+var array;
+var func;
+var this_arg;
+var result;
+var array_size = 100;
+
+// Although these functions have the same code, they are separated for
+// clean IC feedback.
+function DoubleMap() {
+  result = array.map(func, this_arg);
+}
+function SmiMap() {
+  result = array.map(func, this_arg);
+}
+function FastMap() {
+  result = array.map(func, this_arg);
+}
+
+function NaiveMap() {
+  let index = -1
+  const length = array == null ? 0 : array.length
+  const result = new Array(length)
+
+  while (++index < length) {
+    result[index] = func(array[index], index, array)
+  }
+  return result
+}
+
+
+function GenericMap() {
+  result = Array.prototype.map.call(array, func, this_arg);
+}
+
+function NaiveMapSetup() {
+  // Prime NaiveMap with polymorphic cases.
+  array = [1, 2, 3];
+  func = (v, i, a) => v;
+  NaiveMap();
+  NaiveMap();
+  array = [3.4]; NaiveMap();
+  array = new Array(10); array[0] = 'hello'; NaiveMap();
+  SmiMapSetup();
+  delete array[1];
+}
+
+function SmiMapSetup() {
+  array = new Array();
+  for (var i = 0; i < array_size; i++) array[i] = i;
+  func = (value, index, object) => { return value; };
+}
+
+function DoubleMapSetup() {
+  array = new Array();
+  for (var i = 0; i < array_size; i++) array[i] = (i + 0.5);
+  func = (value, index, object) => { return value; };
+}
+
+function FastMapSetup() {
+  array = new Array();
+  for (var i = 0; i < array_size; i++) array[i] = 'value ' + i;
+  func = (value, index, object) => { return value; };
+}
+
+function ObjectMapSetup() {
+  array = { length: array_size };
+  for (var i = 0; i < array_size; i++) {
+    array[i] = i;
+  }
+  func = (value, index, object) => { return value; };
+}