[arm] Fix infinite loop in Math.pow(2,2147483648).

test/mjsunit/regress/regress-5214.js

Index: test/mjsunit/regress/regress-5214.js
diff --git a/test/mjsunit/regress/regress-5214.js b/test/mjsunit/regress/regress-5214.js
new file mode 100644
index 0000000000000000000000000000000000000000..f90a590253c3353e2fc89f476b38c077af045ace
--- /dev/null
+++ b/test/mjsunit/regress/regress-5214.js
@@ -0,0 +1,10 @@
+// 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.
+
+// See http://code.google.com/p/v8/issues/detail?id=5214
+
+
+assertEquals(Infinity, Math.pow(2, 0x80000000));
+assertEquals(Infinity, Math.pow(2, 0xc0000000));
+assertEquals(0, Math.pow(2, -0x80000000));