remove dead argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99445 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index 1cf1f5b..859b73e 100644
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -660,8 +660,7 @@
 /// needed dependencies.
 void InstrEmitter::
 EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
-                DenseMap<SDValue, unsigned> &VRBaseMap,
-                DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM) {
+                DenseMap<SDValue, unsigned> &VRBaseMap) {
   switch (Node->getOpcode()) {
   default:
 #ifndef NDEBUG