Version 5.1.281.7 (cherry-pick)

test/mjsunit/regress/regress-crbug-601617.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.
+
+// Flags: --allow-natives-syntax --harmony-tailcalls
+
+function h() {
+  var res = g.arguments[0].x;
+  return res;
+}
+
+function g(o) {
+  var res = h();
+  return res;
+}
+
+function f1() {
+  var o = { x : 1 };
+  var res = g(o);
+  return res;
+}
+
+function f0() {
+  "use strict";
+  return f1(5);
+}
+
+%NeverOptimizeFunction(h);
+f0();
+f0();
+%OptimizeFunctionOnNextCall(f0);
+assertEquals(1, f0());