Computed property names for object literals in TurboFan.

test/mjsunit/harmony/computed-property-names.js

 // 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.
 
 // Flags: --harmony-computed-property-names
 
 
 function ID(x) {
   return x;
 }
@@ skipping 245 matching lines @@
   var object = {
     __proto__: proto
   };
   assertEquals(proto, Object.getPrototypeOf(object));
 
   object = {
     '__proto__': proto
   };
   assertEquals(proto, Object.getPrototypeOf(object));
 
-  var object = {
+  object = {
     ['__proto__']: proto
   };
   assertEquals(Object.prototype, Object.getPrototypeOf(object));
   assertEquals(proto, object.__proto__);
   assertTrue(object.hasOwnProperty('__proto__'));
+
+  object = {
+    [ID('x')]: 'X',
+    __proto__: proto
+  };
+  assertEquals('X', object.x);
+  assertEquals(proto, Object.getPrototypeOf(object));
 })();