diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index edf80f5f2ee..39df32cf4bc 100644
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -151,10 +151,6 @@ namespace llvm {
       return *I->second;
     }
 
-    /// dupInterval - Duplicate a live interval. The caller is responsible for
-    /// managing the allocated memory.
-    LiveInterval *dupInterval(LiveInterval *li);
-
     /// addLiveRangeToEndOfBlock - Given a register and an instruction,
     /// adds a live range from that instruction to the end of its MBB.
     LiveRange addLiveRangeToEndOfBlock(unsigned reg,
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 85d95d086a2..d406e64deb9 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -626,14 +626,6 @@ LiveInterval* LiveIntervals::createInterval(unsigned reg) {
   return new LiveInterval(reg, Weight);
 }
 
-/// dupInterval - Duplicate a live interval. The caller is responsible for
-/// managing the allocated memory.
-LiveInterval* LiveIntervals::dupInterval(LiveInterval *li) {
-  LiveInterval *NewLI = createInterval(li->reg);
-  NewLI->Copy(*li, MRI, getVNInfoAllocator());
-  return NewLI;
-}
-
 /// shrinkToUses - After removing some uses of a register, shrink its live
 /// range to just the remaining uses. This method does not compute reaching
 /// defs for new uses, and it doesn't remove dead defs.