diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index fa220419817..92048395f86 100644
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -538,38 +538,6 @@ namespace llvm {
 
     void printRegName(unsigned reg) const;
   };
-
-  /// IntervalPrefixPrinter - Print live interval indices before each
-  /// instruction.
-  class IntervalPrefixPrinter : public PrefixPrinter {
-  private:
-    const LiveIntervals &liinfo;
-
-  public:
-    IntervalPrefixPrinter(const LiveIntervals &lii)
-        : liinfo(lii) {};
-
-    // We need null implementations of the other virtual functions to
-    // avoid warnings about hidden virtual functions.
-
-    raw_ostream &operator()(raw_ostream &out,
-                            const MachineBasicBlock &instr) const {
-      return out;
-    }
-    
-    raw_ostream &operator()(raw_ostream &out,
-                            const MachineInstr &instr) const;
-
-    std::ostream &operator()(std::ostream &out,
-                             const MachineBasicBlock &instr) const {
-      return out;
-    }
-    
-    std::ostream &operator()(std::ostream &out,
-                             const MachineInstr &instr) const {
-      return out;
-    }
-  };
 } // End llvm namespace
 
 #endif
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index bbbdee75a52..839817cf039 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -2550,8 +2550,3 @@ LiveRange LiveIntervals::addLiveRangeToEndOfBlock(unsigned reg,
   return LR;
 }
 
-raw_ostream &
-IntervalPrefixPrinter::operator()(raw_ostream &out,
-                                  const MachineInstr &instr) const {
-      return out << liinfo.getInstructionIndex(&instr);
-}