Undefined is not a literal.

src/hydrogen.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 8146 matching lines @@
   ASSERT(current_block()->HasPredecessor());
 
   // Check for a few fast cases. The AST visiting behavior must be in sync
   // with the full codegen: We don't push both left and right values onto
   // the expression stack when one side is a special-case literal.
   Expression* sub_expr = NULL;
   Handle<String> check;
   if (expr->IsLiteralCompareTypeof(&sub_expr, &check)) {
     return HandleLiteralCompareTypeof(expr, sub_expr, check);
   }
-  if (expr->IsLiteralCompareUndefined(&sub_expr)) {
+  if (expr->IsLiteralCompareUndefined(&sub_expr, isolate())) {
     return HandleLiteralCompareNil(expr, sub_expr, kUndefinedValue);
   }
   if (expr->IsLiteralCompareNull(&sub_expr)) {
     return HandleLiteralCompareNil(expr, sub_expr, kNullValue);
   }
 
   if (IsClassOfTest(expr)) {
     CallRuntime* call = expr->left()->AsCallRuntime();
     ASSERT(call->arguments()->length() == 1);
     CHECK_ALIVE(VisitForValue(call->arguments()->at(0)));
@@ skipping 1811 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal