diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h
index a8af4a3b05e..3a3911bbf42 100644
--- a/include/llvm/CodeGen/SelectionDAG.h
+++ b/include/llvm/CodeGen/SelectionDAG.h
@@ -431,13 +431,6 @@ public:
 
   void dump() const;
 
-  /// InsertISelMapEntry - A helper function to insert a key / element pair
-  /// into a SDOperand to SDOperand map. This is added to avoid the map
-  /// insertion operator from being inlined.
-  static void InsertISelMapEntry(std::map<SDOperand, SDOperand> &Map,
-                                 SDNode *Key, unsigned KeyResNo,
-                                 SDNode *Element, unsigned ElementResNo);
-
 private:
   void RemoveNodeFromCSEMaps(SDNode *N);
   SDNode *AddNonLeafNodeToCSEMaps(SDNode *N);
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 1c17dfbee83..9f79429548b 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2901,12 +2901,3 @@ void SelectionDAG::dump() const {
   std::cerr << "\n\n";
 }
 
-/// InsertISelMapEntry - A helper function to insert a key / element pair
-/// into a SDOperand to SDOperand map. This is added to avoid the map
-/// insertion operator from being inlined.
-void SelectionDAG::InsertISelMapEntry(std::map<SDOperand, SDOperand> &Map,
-                                      SDNode *Key, unsigned KeyResNo,
-                                      SDNode *Element, unsigned ElementResNo) {
-  Map.insert(std::make_pair(SDOperand(Key, KeyResNo),
-                            SDOperand(Element, ElementResNo)));
-}