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

Patch by Micah Villmow.

llvm-svn: 157215
This commit is contained in:
Owen Anderson 2012-05-21 22:39:20 +00:00
parent 3e606ea7ae
commit f2118ea826
1 changed files with 1 additions and 1 deletions
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llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -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;
}