Fix polymorphic keyed loads for SLOPPY_ARGUMENTS_ELEMENTS

test/mjsunit/regress/regress-crbug-350867.js

Index: test/mjsunit/regress/regress-crbug-350867.js
diff --git a/test/mjsunit/regress/regress-crbug-350867.js b/test/mjsunit/regress/regress-crbug-350867.js
new file mode 100644
index 0000000000000000000000000000000000000000..d8b826cff5c73a2b78f0b7b9697e4051cb64b75a
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-350867.js
@@ -0,0 +1,15 @@
+// Copyright 2014 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 f1(a, i) {
+  return a[i];
+}
+function f2(a, b, c, index) {
+  return f1(arguments, index);
+}
+
+f2(2, 3, 4, "foo");
+f2(2, 3, 4, "foo");
+assertEquals(11, f1([11, 22, 33], 0));
+assertEquals(22, f2(22, 33, 44, 0));