diff --git a/include/llvm/CodeGen/LiveIntervalAnalysis.h b/include/llvm/CodeGen/LiveIntervalAnalysis.h
index 5a0d81b5c20..c136048c9c7 100644
--- a/include/llvm/CodeGen/LiveIntervalAnalysis.h
+++ b/include/llvm/CodeGen/LiveIntervalAnalysis.h
@@ -272,10 +272,6 @@ namespace llvm {
     unsigned getNumConflictsWithPhysReg(const LiveInterval &li,
                                         unsigned PhysReg) const;
 
-    /// processImplicitDefs - Process IMPLICIT_DEF instructions. Add isUndef
-    /// marker to implicit_def defs and their uses.
-    void processImplicitDefs();
-
     /// intervalIsInOneMBB - Returns true if the specified interval is entirely
     /// within a single basic block.
     bool intervalIsInOneMBB(const LiveInterval &li) const;