Import Cobalt 13.102542
Change-Id: I6bda7b03a2e33edfd735efcb981e2a731696b90d
diff --git a/src/v8/test/js-perf-test/Object/create.js b/src/v8/test/js-perf-test/Object/create.js
new file mode 100644
index 0000000..49ebe5c
--- /dev/null
+++ b/src/v8/test/js-perf-test/Object/create.js
@@ -0,0 +1,70 @@
+// 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.
+
+// ----------------------------------------------------------------------------
+
+function shallowClone(object) {
+ return Object.create(object.__proto__,
+ Object.getOwnPropertyDescriptors(object));
+}
+
+function makeSlowCopy(object) {
+ object = shallowClone(object);
+ object.__foo__ = 1;
+ delete object.__foo__;
+ return object;
+}
+
+function convertToPropertyDescriptors(dict) {
+ for (var key in dict) {
+ var propertiesObject = dict[key];
+ dict[key] = Object.getOwnPropertyDescriptors(propertiesObject);
+ }
+ return dict;
+}
+
+var properties_5 = { a:1, b:2, c:3, d:4, e:5 };
+var TEST_PROPERTIES = convertToPropertyDescriptors({
+ empty: {},
+ array_5: [1, 2, 3, 4, 5],
+ properties_5: properties_5,
+ properties_10: { a:1, b:2, c:3, d:4, e:5, f:6, g:7, h:8, i:9, j:10 },
+ properties_dict: makeSlowCopy(properties_5)
+});
+
+var TEST_PROTOTYPES = {
+ null: null,
+ empty: {},
+ 'Object.prototype': Object.prototype,
+ 'Array.prototype': Array.prototype
+};
+
+// ----------------------------------------------------------------------------
+
+var testFunction = () => {
+ return Object.create(prototype, properties);
+}
+
+function createTestFunction(prototype, properties) {
+ // Force a new function for each test-object to avoid side-effects due to ICs.
+ var random_comment = "\n// random comment" + Math.random() + "\n";
+ return eval(random_comment + testFunction.toString());
+}
+
+// ----------------------------------------------------------------------------
+
+var benchmarks = []
+
+for (var proto_name in TEST_PROTOTYPES) {
+ var prototype = TEST_PROTOTYPES[proto_name];
+ for (var prop_name in TEST_PROPERTIES) {
+ var properties = TEST_PROPERTIES[prop_name];
+ var name = 'Create proto:' + proto_name + " properties:" + prop_name;
+ benchmarks.push(
+ new Benchmark(name, false, false, 0,
+ createTestFunction(prototype, properties)));
+ }
+}
+
+new BenchmarkSuite('Create', [1000], benchmarks);
