diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index d1759c1ab0..d4df880d0b 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2434,11 +2434,12 @@ SDValue DAGCombiner::visitSHL(SDNode *N) { if (ConstantSDNode *N101C = dyn_cast<ConstantSDNode>(N101)) { MVT TruncVT = N1.getValueType(); SDValue N100 = N1.getOperand(0).getOperand(0); + uint64_t TruncC = TruncVT.getIntegerVTBitMask() & + N101C->getZExtValue(); return DAG.getNode(ISD::SHL, VT, N0, DAG.getNode(ISD::AND, TruncVT, DAG.getNode(ISD::TRUNCATE, TruncVT, N100), - DAG.getConstant(N101C->getZExtValue(), - TruncVT))); + DAG.getConstant(TruncC, TruncVT))); } } @@ -2561,11 +2562,12 @@ SDValue DAGCombiner::visitSRA(SDNode *N) { if (ConstantSDNode *N101C = dyn_cast<ConstantSDNode>(N101)) { MVT TruncVT = N1.getValueType(); SDValue N100 = N1.getOperand(0).getOperand(0); + uint64_t TruncC = TruncVT.getIntegerVTBitMask() & + N101C->getZExtValue(); return DAG.getNode(ISD::SRA, VT, N0, DAG.getNode(ISD::AND, TruncVT, DAG.getNode(ISD::TRUNCATE, TruncVT, N100), - DAG.getConstant(N101C->getZExtValue(), - TruncVT))); + DAG.getConstant(TruncC, TruncVT))); } } @@ -2678,11 +2680,12 @@ SDValue DAGCombiner::visitSRL(SDNode *N) { if (ConstantSDNode *N101C = dyn_cast<ConstantSDNode>(N101)) { MVT TruncVT = N1.getValueType(); SDValue N100 = N1.getOperand(0).getOperand(0); + uint64_t TruncC = TruncVT.getIntegerVTBitMask() & + N101C->getZExtValue(); return DAG.getNode(ISD::SRL, VT, N0, DAG.getNode(ISD::AND, TruncVT, DAG.getNode(ISD::TRUNCATE, TruncVT, N100), - DAG.getConstant(N101C->getZExtValue(), - TruncVT))); + DAG.getConstant(TruncC, TruncVT))); } } |