Fix use of an unitialized value in the LegalizeOps expansion for ISD::SUB. No in-tree targets exercise this path.

Patch by Micah Villmow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157215 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index b8cb897a86..f77c74b9eb 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3064,7 +3064,7 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node) {
            "Don't know how to expand this subtraction!");
     Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1),
                DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT));
-    Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT));
+    Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp1, DAG.getConstant(1, VT));
     Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1));
     break;
   }