Make it easier to test OSR with %OptimizeOsr() runtime call.

test/mjsunit/compiler/osr-top1.js

Index: test/mjsunit/compiler/osr-top1.js
diff --git a/test/mjsunit/compiler/osr-top1.js b/test/mjsunit/compiler/osr-top1.js
new file mode 100644
index 0000000000000000000000000000000000000000..742b71d86e5ed582662f9bfe45796b3e48d157d6
--- /dev/null
+++ b/test/mjsunit/compiler/osr-top1.js
@@ -0,0 +1,16 @@
+// Copyright 2015 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: --use-osr --allow-natives-syntax
+
+var sum = 0;
+for (var i = 0; i < 10000; i++) {
+  if (i == 100) %OptimizeOsr();
+  var x = i + 2;
+  var y = x + 5;
+  var z = y + 3;
+  sum += z;
+}
+
+assertEquals(50095000, sum);