diff --git a/src/v8/test/js-perf-test/Parsing/strings.js b/src/v8/test/js-perf-test/Parsing/strings.js
new file mode 100644
index 0000000..63eef38
--- /dev/null
+++ b/src/v8/test/js-perf-test/Parsing/strings.js
@@ -0,0 +1,37 @@
+// Copyright 2018 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.
+
+new BenchmarkSuite("SingleLineString", [1000], [
+  new Benchmark("SingleLineString", false, true, iterations, Run, SingleLineStringSetup)
+]);
+
+new BenchmarkSuite("SingleLineStrings", [3000], [
+  new Benchmark("SingleLineStrings", false, true, iterations, Run, SingleLineStringsSetup)
+]);
+
+new BenchmarkSuite("MultiLineString", [1000], [
+  new Benchmark("MultiLineString", false, true, iterations, Run, MultiLineStringSetup)
+]);
+
+function SingleLineStringSetup() {
+  code = "\"" + "This is a string".repeat(600) + "\"";
+  %FlattenString(code);
+}
+
+function SingleLineStringsSetup() {
+  code = "\"This is a string\"\n".repeat(600);
+  %FlattenString(code);
+}
+
+function MultiLineStringSetup() {
+  code = "\"" + "This is a string \\\n".repeat(600) + "\"";
+  %FlattenString(code);
+}
+
+function Run() {
+  if (code == undefined) {
+    throw new Error("No test data");
+  }
+  eval(code);
+}