Make HTypeofIsAndBranch accept any representation input

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 80773bf14789e8524dc4c46184588641d6396495..567ca8783c8dfa6fa05a24d76af7c9d32540da5b 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -4444,15 +4444,26 @@ class HTypeofIsAndBranch V8_FINAL : public HUnaryControlInstruction {
   DECLARE_CONCRETE_INSTRUCTION(TypeofIsAndBranch)
 
   virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
-    return Representation::Tagged();
+    return Representation::None();
   }
 
+  virtual HValue* Canonicalize() V8_OVERRIDE;
+
+  enum State {
+    kUnKnown,
+    kAlwaysTrue,
+    kAlwaysFalse
+  };
+
+  State state() { return state_; }
+
  private:
   HTypeofIsAndBranch(HValue* value, Handle<String> type_literal)
       : HUnaryControlInstruction(value, NULL, NULL),
-        type_literal_(type_literal) { }
+        type_literal_(type_literal), state_(kUnKnown) { }
 
   Handle<String> type_literal_;
+  State state_;
 };