[test] Add array destructuring micro-benchmarks.

Add array pattern destructuring micro-benchmarks. These benchmarks compare
a naive ES5 immplementation to an ES6-style implementation that uses
destructuring.

Adapted from http://kpdecker.github.io/six-speed

BUG=v8:5267

Review-Url: https://codereview.chromium.org/2513273002
Cr-Commit-Position: refs/heads/master@{#41126}

test/js-perf-test/SixSpeed.json

@@ -8,6 +8,20 @@
   "total": true,
   "resources": ["base.js"],
   "tests": [
+        {
+      "name": "Array pattern destructuring",
+      "path": ["SixSpeed/array_destructuring"],
+      "main": "run.js",
+      "resources": [
+        "run.js",
+        "array_destructuring.js"
+      ],
+      "results_regexp": "^%s\\(Score\\): (.+)$",
+      "tests": [
+        {"name": "ArrayDestructuring-ES5"},
+        {"name": "ArrayDestructuring-ES6"}
+      ]
+    },
     {
       "name": "Computed property names in object literals",
       "path": ["SixSpeed/object_literals"],

test/js-perf-test/SixSpeed/array_destructuring/array_destructuring.js

+// Copyright 2016 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.
+
+// This benchmark is based on the six-speed benchmark build output.
+// Copyright 2014 Kevin Decker <https://github.com/kpdecker/six-speed/>
+
+
+new BenchmarkSuite('ArrayDestructuring-ES5', [1000], [
+  new Benchmark('ES5', false, false, 0, ES5),
+]);
+
+new BenchmarkSuite('ArrayDestructuring-ES6', [1000], [
+  new Benchmark('ES6', false, false, 0, ES6),
+]);
+
+// ----------------------------------------------------------------------------
+// Benchmark: ES5
+// ----------------------------------------------------------------------------
+
+function ES5() {
+  "use strict";
+  var data = [1, 2, 3];
+  var c = data[0];
+  return c;
+}
+
+
+// ----------------------------------------------------------------------------
+// Benchmark: ES6
+// ----------------------------------------------------------------------------
+
+function ES6() {
+  "use strict";
+  var data = [1, 2, 3];
+  var [c] = data;
+  return c;
+}

test/js-perf-test/SixSpeed/array_destructuring/run.js

+// Copyright 2016 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.
+
+load('../../base.js');
+load('array_destructuring.js');
+
+var success = true;
+
+function PrintResult(name, result) {
+  print(name + '(Score): ' + result);
+}
+
+
+function PrintError(name, error) {
+  PrintResult(name, error);
+  success = false;
+}
+
+
+BenchmarkSuite.config.doWarmup = undefined;
+BenchmarkSuite.config.doDeterministic = undefined;
+
+BenchmarkSuite.RunSuites({ NotifyResult: PrintResult,
+                           NotifyError: PrintError });