diff options
Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 222c3a5..68df786 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -13604,6 +13604,7 @@ static SDValue PerformSHLCombine(SDNode *N, SelectionDAG &DAG) { /// PerformShiftCombine - Transforms vector shift nodes to use vector shifts /// when possible. static SDValue PerformShiftCombine(SDNode* N, SelectionDAG &DAG, + TargetLowering::DAGCombinerInfo &DCI, const X86Subtarget *Subtarget) { EVT VT = N->getValueType(0); if (N->getOpcode() == ISD::SHL) { @@ -13667,9 +13668,16 @@ static SDValue PerformShiftCombine(SDNode* N, SelectionDAG &DAG, BaseShAmt = InVec.getOperand(1); } } - if (BaseShAmt.getNode() == 0) + if (BaseShAmt.getNode() == 0) { + // Don't create instructions with illegal types after legalize + // types has run. + if (!DAG.getTargetLoweringInfo().isTypeLegal(EltVT) && + !DCI.isBeforeLegalize()) + return SDValue(); + BaseShAmt = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, EltVT, ShAmtOp, DAG.getIntPtrConstant(0)); + } } else return SDValue(); @@ -14833,7 +14841,7 @@ SDValue X86TargetLowering::PerformDAGCombine(SDNode *N, case ISD::MUL: return PerformMulCombine(N, DAG, DCI); case ISD::SHL: case ISD::SRA: - case ISD::SRL: return PerformShiftCombine(N, DAG, Subtarget); + case ISD::SRL: return PerformShiftCombine(N, DAG, DCI, Subtarget); case ISD::AND: return PerformAndCombine(N, DAG, DCI, Subtarget); case ISD::OR: return PerformOrCombine(N, DAG, DCI, Subtarget); case ISD::XOR: return PerformXorCombine(N, DAG, DCI, Subtarget); |