diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index a0967f57400..68f3bf35493 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2217,7 +2217,8 @@ SDValue DAGCombiner::visitADDCARRYLike(SDValue N0, SDValue N1, SDValue CarryIn, SDNode *N) { // Iff the flag result is dead: // (addcarry (add|uaddo X, Y), 0, Carry) -> (addcarry X, Y, Carry) - if ((N0.getOpcode() == ISD::ADD || N0.getOpcode() == ISD::UADDO) && + if ((N0.getOpcode() == ISD::ADD || + (N0.getOpcode() == ISD::UADDO && N0.getResNo() == 0)) && isNullConstant(N1) && !N->hasAnyUseOfValue(1)) return DAG.getNode(ISD::ADDCARRY, SDLoc(N), N->getVTList(), N0.getOperand(0), N0.getOperand(1), CarryIn); |
