Require typed input representation for HTypeof hydrogen instruction....

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
===================================================================
--- src/hydrogen-instructions.h	(revision 6564)
+++ src/hydrogen-instructions.h	(working copy)
@@ -3073,6 +3073,10 @@
     set_representation(Representation::Tagged());
   }
 
+  virtual Representation RequiredInputRepresentation(int index) const {
+    return Representation::Tagged();
+  }
+
   DECLARE_CONCRETE_INSTRUCTION(Typeof, "typeof")
 };