diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index bdcad0a3b5..ca5f962a86 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -3268,8 +3268,7 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { OpToUse = ISD::UMUL_LOHI; } if (OpToUse) { - Result = SDValue(DAG.getNode(OpToUse, dl, VTs, Tmp1, Tmp2).getNode(), - 0); + Result = DAG.getNode(OpToUse, dl, VTs, Tmp1, Tmp2); break; } } @@ -3289,16 +3288,21 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { } if (Node->getOpcode() == ISD::SDIV && TLI.isOperationLegalOrCustom(ISD::SDIVREM, VT)) { - Result = SDValue(DAG.getNode(ISD::SDIVREM, dl, - VTs, Tmp1, Tmp2).getNode(), - 0); + Result = DAG.getNode(ISD::SDIVREM, dl, VTs, Tmp1, Tmp2); break; } if (Node->getOpcode() == ISD::UDIV && TLI.isOperationLegalOrCustom(ISD::UDIVREM, VT)) { - Result = SDValue(DAG.getNode(ISD::UDIVREM, dl, - VTs, Tmp1, Tmp2).getNode(), - 0); + Result = DAG.getNode(ISD::UDIVREM, dl, VTs, Tmp1, Tmp2); + break; + } + if (Node->getOpcode() == ISD::SUB && + TLI.isOperationLegalOrCustom(ISD::ADD, VT) && + TLI.isOperationLegalOrCustom(ISD::XOR, VT)) { + Tmp2 = DAG.getNode(ISD::XOR, dl, VT, Tmp2, + DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); + Tmp2 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); + Result = DAG.getNode(ISD::ADD, dl, VT, Tmp1, Tmp2); break; } |