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Small refactoring in DAGCombine. NFC

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llvm-svn: 302699
This commit is contained in:
Amaury Sechet 2017-05-10 17:58:28 +00:00
parent 9a17eb1902
commit ecf5118408
1 changed files with 3 additions and 3 deletions
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6
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -2131,17 +2131,17 @@ SDValue DAGCombiner::visitADDCARRY(SDNode *N) {
SDValue N0 = N->getOperand(0);
SDValue N1 = N->getOperand(1);
SDValue CarryIn = N->getOperand(2);
SDLoc DL(N);
// canonicalize constant to RHS
ConstantSDNode *N0C = dyn_cast<ConstantSDNode>(N0);
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1);
if (N0C && !N1C)
return DAG.getNode(ISD::ADDCARRY, SDLoc(N), N->getVTList(),
N1, N0, CarryIn);
return DAG.getNode(ISD::ADDCARRY, DL, N->getVTList(), N1, N0, CarryIn);
// fold (addcarry x, y, false) -> (uaddo x, y)
if (isNullConstant(CarryIn))
return DAG.getNode(ISD::UADDO, SDLoc(N), N->getVTList(), N0, N1);
return DAG.getNode(ISD::UADDO, DL, N->getVTList(), N0, N1);
if (SDValue Combined = visitADDCARRYLike(N0, N1, CarryIn, N))
return Combined;