remove dead vars


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28254 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 712a030..cf1d41f 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1539,7 +1539,7 @@
   // Perform various simplifications.
   ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val);
   ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val);
-  ConstantSDNode *N3C = dyn_cast<ConstantSDNode>(N3.Val);
+  //ConstantSDNode *N3C = dyn_cast<ConstantSDNode>(N3.Val);
   switch (Opcode) {
   case ISD::SETCC: {
     // Use SimplifySetCC  to simplify SETCC's.
@@ -1696,7 +1696,6 @@
   default: break;
   }
   
-  ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(Ops[1].Val);
   switch (Opcode) {
   default: break;
   case ISD::TRUNCSTORE: {