Fix a nasty bug from a previous patch of mine


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23069 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index c3d1bb3..9d7e5b1 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1042,7 +1042,7 @@
   SDNode *N;
   if (VT != MVT::Flag) { // Don't CSE flag producing nodes
     SDNode *&E = UnaryOps[std::make_pair(Opcode, std::make_pair(Operand, VT))];
-    if (E) return SDOperand(N, 0);
+    if (E) return SDOperand(E, 0);
     E = N = new SDNode(Opcode, Operand);
   } else {
     N = new SDNode(Opcode, Operand);