diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp index a8aee12278..aa92cc3638 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp @@ -58,6 +58,7 @@ void DAGTypeLegalizer::ScalarizeVectorResult(SDNode *N, unsigned ResNo) { case ISD::LOAD: R = ScalarizeVecRes_LOAD(cast<LoadSDNode>(N));break; case ISD::SCALAR_TO_VECTOR: R = ScalarizeVecRes_SCALAR_TO_VECTOR(N); break; case ISD::SIGN_EXTEND_INREG: R = ScalarizeVecRes_InregOp(N); break; + case ISD::VSELECT: R = ScalarizeVecRes_VSELECT(N); break; case ISD::SELECT: R = ScalarizeVecRes_SELECT(N); break; case ISD::SELECT_CC: R = ScalarizeVecRes_SELECT_CC(N); break; case ISD::SETCC: R = ScalarizeVecRes_SETCC(N); break; @@ -226,6 +227,38 @@ SDValue DAGTypeLegalizer::ScalarizeVecRes_SCALAR_TO_VECTOR(SDNode *N) { return InOp; } +SDValue DAGTypeLegalizer::ScalarizeVecRes_VSELECT(SDNode *N) { + SDValue Cond = GetScalarizedVector(N->getOperand(0)); + SDValue LHS = GetScalarizedVector(N->getOperand(1)); + TargetLowering::BooleanContent ScalarBool = TLI.getBooleanContents(false); + TargetLowering::BooleanContent VecBool = TLI.getBooleanContents(true); + if (ScalarBool != VecBool) { + EVT CondVT = Cond.getValueType(); + switch (ScalarBool) { + default: llvm_unreachable("Unknown boolean content enum"); + case TargetLowering::UndefinedBooleanContent: + break; + case TargetLowering::ZeroOrOneBooleanContent: + assert(VecBool == TargetLowering::UndefinedBooleanContent || + VecBool == TargetLowering::ZeroOrNegativeOneBooleanContent); + // Vector read from all ones, scalar expects a single 1 so mask. + Cond = DAG.getNode(ISD::AND, N->getDebugLoc(), CondVT, + Cond, DAG.getConstant(1, CondVT)); + break; + case TargetLowering::ZeroOrNegativeOneBooleanContent: + assert(VecBool == TargetLowering::UndefinedBooleanContent || + VecBool == TargetLowering::ZeroOrOneBooleanContent); + // Vector reads from a one, scalar from all ones so sign extend. + Cond = DAG.getNode(ISD::SIGN_EXTEND_INREG, N->getDebugLoc(), CondVT, + Cond, DAG.getValueType(MVT::i1)); + break; + } + } + return DAG.getNode(ISD::SELECT, N->getDebugLoc(), + LHS.getValueType(), Cond, LHS, + GetScalarizedVector(N->getOperand(2))); +} + SDValue DAGTypeLegalizer::ScalarizeVecRes_SELECT(SDNode *N) { SDValue LHS = GetScalarizedVector(N->getOperand(1)); return DAG.getNode(ISD::SELECT, N->getDebugLoc(), |