Initial set of perf tests for classes.

test/js-perf-test/Classes/super.js

+// Copyright 2014 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.
+'use strict';
+
+var SuperBenchmark = new BenchmarkSuite('Super', [1000], [
+     new Benchmark('SuperMethodCall', false, false, 0, SuperMethodCall),
+     new Benchmark('SuperGetterCall', false, false, 0, SuperGetterCall),
+     new Benchmark('SuperSetterCall', false, false, 0, SuperSetterCall),
+]);
+
+
+function Base() { }
+function Derived() {
+  this._x = 1;
+}
+
+
+Base.prototype = {
+  constructor: Base,
+  get x() {
+    return this._x++;
+  },
+  set x(v) {
+    this._x += v;
+    return this._x;
+  }
+}
+
+Base.prototype.f = function() {
+  return this._x++;
+}.toMethod(Base.prototype);
+
+Derived.prototype = Object.create(Base.prototype);
+
+Derived.prototype.SuperCall = function() {
+  return super.f();
+}.toMethod(Derived.prototype);
+
+Derived.prototype.GetterCall = function() {
+  return super.x;
+}.toMethod(Derived.prototype);
+
+Derived.prototype.SetterCall = function() {
+  return super.x = 5;
+}.toMethod(Derived.prototype);
+

[arv (Not doing code reviews), 2014/10/16 19:36:55]

Object.setPrototypeOf(Derived, Base)

too? Since that makes these look more like classes.

[Dmitry Lomov (no reviews), 2014/10/16 19:43:29]

Done.

+var derived = new Derived();
+
+function SuperMethodCall() {
+  return derived.SuperCall();
+}
+
+function SuperGetterCall() {
+  return derived.GetterCall();
+}
+
+function SuperSetterCall() {
+  return derived.SetterCall();
+}