diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp index 699081e2a5c..88c5dddfec4 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp @@ -1172,11 +1172,14 @@ void DAGTypeLegalizer::SplitInteger(SDValue Op, assert(LoVT.getSizeInBits() + HiVT.getSizeInBits() == Op.getValueSizeInBits() && "Invalid integer splitting!"); Lo = DAG.getNode(ISD::TRUNCATE, dl, LoVT, Op); - Hi = - DAG.getNode(ISD::SRL, dl, Op.getValueType(), Op, - DAG.getConstant(LoVT.getSizeInBits(), dl, - TLI.getScalarShiftAmountTy( - DAG.getDataLayout(), Op.getValueType()))); + unsigned ReqShiftAmountInBits = + Log2_32_Ceil(Op.getValueType().getSizeInBits()); + MVT ShiftAmountTy = + TLI.getScalarShiftAmountTy(DAG.getDataLayout(), Op.getValueType()); + if (ReqShiftAmountInBits > ShiftAmountTy.getSizeInBits()) + ShiftAmountTy = MVT::getIntegerVT(NextPowerOf2(ReqShiftAmountInBits)); + Hi = DAG.getNode(ISD::SRL, dl, Op.getValueType(), Op, + DAG.getConstant(LoVT.getSizeInBits(), dl, ShiftAmountTy)); Hi = DAG.getNode(ISD::TRUNCATE, dl, HiVT, Hi); } |
