diff --git a/lib/Target/Mips/MipsSubtarget.h b/lib/Target/Mips/MipsSubtarget.h
index 7ec61ca95b2..8bf98e7b99c 100644
--- a/lib/Target/Mips/MipsSubtarget.h
+++ b/lib/Target/Mips/MipsSubtarget.h
@@ -23,8 +23,12 @@ namespace llvm {
 class Module;
 
 class MipsSubtarget : public TargetSubtarget {
+
 protected:
-  bool isR3000;
+
+  bool IsMipsIII;
+  InstrItineraryData InstrItins;
+
 public:
   /// This constructor initializes the data members to match that
   /// of the specified module.
@@ -36,7 +40,9 @@ public:
   /// subtarget options.  Definition of function is auto generated by tblgen.
   void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
 
-  bool IsR3000() const { return isR3000; }
+  /// isMipsIII - Return true if the selected CPU supports MipsIII ISA
+  /// support. 
+  bool isMipsIII() const { return IsMipsIII; }
 };
 } // End llvm namespace