[Test] Add SixSpeed tests for spread literals.

test/js-perf-test/SixSpeed/spread_literal/es5.js

Index: test/js-perf-test/SixSpeed/spread_literal/es5.js
diff --git a/test/js-perf-test/SixSpeed/spread_literal/es5.js b/test/js-perf-test/SixSpeed/spread_literal/es5.js
new file mode 100644
index 0000000000000000000000000000000000000000..33ddbf2b15ee642b30c855a97525df4c6b7f81d5
--- /dev/null
+++ b/test/js-perf-test/SixSpeed/spread_literal/es5.js
@@ -0,0 +1,16 @@
+// 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.
+
+// This benchmark is based on the six-speed benchmark build output.
+// Copyright 2014 Kevin Decker <https://github.com/kpdecker/six-speed/>
+
+new BenchmarkSuite('ES5', [1000], [
+  new Benchmark('ES5', false, false, 0, ES5),
+]);
+
+function ES5() {
+  var ret = [1];
+  ret.push(1, 2, 3);
+  return ret;
+}