| //===-------- LegalizeFloatTypes.cpp - Legalization of float types --------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements float type expansion and softening for LegalizeTypes. |
| // Softening is the act of turning a computation in an illegal floating point |
| // type into a computation in an integer type of the same size; also known as |
| // "soft float". For example, turning f32 arithmetic into operations using i32. |
| // The resulting integer value is the same as what you would get by performing |
| // the floating point operation and bitcasting the result to the integer type. |
| // Expansion is the act of changing a computation in an illegal type to be a |
| // computation in two identical registers of a smaller type. For example, |
| // implementing ppcf128 arithmetic in two f64 registers. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LegalizeTypes.h" |
| using namespace llvm; |
| |
| /// GetFPLibCall - Return the right libcall for the given floating point type. |
| static RTLIB::Libcall GetFPLibCall(MVT VT, |
| RTLIB::Libcall Call_F32, |
| RTLIB::Libcall Call_F64, |
| RTLIB::Libcall Call_F80, |
| RTLIB::Libcall Call_PPCF128) { |
| return |
| VT == MVT::f32 ? Call_F32 : |
| VT == MVT::f64 ? Call_F64 : |
| VT == MVT::f80 ? Call_F80 : |
| VT == MVT::ppcf128 ? Call_PPCF128 : |
| RTLIB::UNKNOWN_LIBCALL; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Result Float to Integer Conversion. |
| //===----------------------------------------------------------------------===// |
| |
| void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) { |
| DEBUG(cerr << "Soften float result " << ResNo << ": "; N->dump(&DAG); |
| cerr << "\n"); |
| SDValue R = SDValue(); |
| |
| switch (N->getOpcode()) { |
| default: |
| #ifndef NDEBUG |
| cerr << "SoftenFloatResult #" << ResNo << ": "; |
| N->dump(&DAG); cerr << "\n"; |
| #endif |
| assert(0 && "Do not know how to soften the result of this operator!"); |
| abort(); |
| |
| case ISD::BIT_CONVERT: R = SoftenFloatRes_BIT_CONVERT(N); break; |
| case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break; |
| case ISD::ConstantFP: |
| R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N)); |
| break; |
| case ISD::FABS: R = SoftenFloatRes_FABS(N); break; |
| case ISD::FADD: R = SoftenFloatRes_FADD(N); break; |
| case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break; |
| case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break; |
| case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break; |
| case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break; |
| case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break; |
| case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break; |
| case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break; |
| case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break; |
| case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break; |
| case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break; |
| case ISD::SINT_TO_FP: R = SoftenFloatRes_SINT_TO_FP(N); break; |
| case ISD::UINT_TO_FP: R = SoftenFloatRes_UINT_TO_FP(N); break; |
| } |
| |
| // If R is null, the sub-method took care of registering the result. |
| if (R.getNode()) |
| SetSoftenedFloat(SDValue(N, ResNo), R); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_BIT_CONVERT(SDNode *N) { |
| return BitConvertToInteger(N->getOperand(0)); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) { |
| // Convert the inputs to integers, and build a new pair out of them. |
| return DAG.getNode(ISD::BUILD_PAIR, |
| TLI.getTypeToTransformTo(N->getValueType(0)), |
| BitConvertToInteger(N->getOperand(0)), |
| BitConvertToInteger(N->getOperand(1))); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) { |
| return DAG.getConstant(N->getValueAPF().convertToAPInt(), |
| TLI.getTypeToTransformTo(N->getValueType(0))); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| unsigned Size = NVT.getSizeInBits(); |
| |
| // Mask = ~(1 << (Size-1)) |
| SDValue Mask = DAG.getConstant(APInt::getAllOnesValue(Size).clear(Size-1), |
| NVT); |
| SDValue Op = GetSoftenedFloat(N->getOperand(0)); |
| return DAG.getNode(ISD::AND, NVT, Op, Mask); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), |
| GetSoftenedFloat(N->getOperand(1)) }; |
| return MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::ADD_F32, |
| RTLIB::ADD_F64, |
| RTLIB::ADD_F80, |
| RTLIB::ADD_PPCF128), |
| NVT, Ops, 2, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) { |
| SDValue LHS = GetSoftenedFloat(N->getOperand(0)); |
| SDValue RHS = BitConvertToInteger(N->getOperand(1)); |
| |
| MVT LVT = LHS.getValueType(); |
| MVT RVT = RHS.getValueType(); |
| |
| unsigned LSize = LVT.getSizeInBits(); |
| unsigned RSize = RVT.getSizeInBits(); |
| |
| // First get the sign bit of second operand. |
| SDValue SignBit = DAG.getNode(ISD::SHL, RVT, DAG.getConstant(1, RVT), |
| DAG.getConstant(RSize - 1, |
| TLI.getShiftAmountTy())); |
| SignBit = DAG.getNode(ISD::AND, RVT, RHS, SignBit); |
| |
| // Shift right or sign-extend it if the two operands have different types. |
| int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits(); |
| if (SizeDiff > 0) { |
| SignBit = DAG.getNode(ISD::SRL, RVT, SignBit, |
| DAG.getConstant(SizeDiff, TLI.getShiftAmountTy())); |
| SignBit = DAG.getNode(ISD::TRUNCATE, LVT, SignBit); |
| } else if (SizeDiff < 0) { |
| SignBit = DAG.getNode(ISD::ANY_EXTEND, LVT, SignBit); |
| SignBit = DAG.getNode(ISD::SHL, LVT, SignBit, |
| DAG.getConstant(-SizeDiff, TLI.getShiftAmountTy())); |
| } |
| |
| // Clear the sign bit of the first operand. |
| SDValue Mask = DAG.getNode(ISD::SHL, LVT, DAG.getConstant(1, LVT), |
| DAG.getConstant(LSize - 1, |
| TLI.getShiftAmountTy())); |
| Mask = DAG.getNode(ISD::SUB, LVT, Mask, DAG.getConstant(1, LVT)); |
| LHS = DAG.getNode(ISD::AND, LVT, LHS, Mask); |
| |
| // Or the value with the sign bit. |
| return DAG.getNode(ISD::OR, LVT, LHS, SignBit); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), |
| GetSoftenedFloat(N->getOperand(1)) }; |
| return MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::DIV_F32, |
| RTLIB::DIV_F64, |
| RTLIB::DIV_F80, |
| RTLIB::DIV_PPCF128), |
| NVT, Ops, 2, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), |
| GetSoftenedFloat(N->getOperand(1)) }; |
| return MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::MUL_F32, |
| RTLIB::MUL_F64, |
| RTLIB::MUL_F80, |
| RTLIB::MUL_PPCF128), |
| NVT, Ops, 2, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| SDValue Op = N->getOperand(0); |
| RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0)); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!"); |
| return MakeLibCall(LC, NVT, &Op, 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| SDValue Op = N->getOperand(0); |
| RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0)); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!"); |
| return MakeLibCall(LC, NVT, &Op, 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) }; |
| return MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::POWI_F32, |
| RTLIB::POWI_F64, |
| RTLIB::POWI_F80, |
| RTLIB::POWI_PPCF128), |
| NVT, Ops, 2, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), |
| GetSoftenedFloat(N->getOperand(1)) }; |
| return MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::SUB_F32, |
| RTLIB::SUB_F64, |
| RTLIB::SUB_F80, |
| RTLIB::SUB_PPCF128), |
| NVT, Ops, 2, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) { |
| LoadSDNode *L = cast<LoadSDNode>(N); |
| MVT VT = N->getValueType(0); |
| MVT NVT = TLI.getTypeToTransformTo(VT); |
| |
| SDValue NewL; |
| if (L->getExtensionType() == ISD::NON_EXTLOAD) { |
| NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(), |
| NVT, L->getChain(), L->getBasePtr(), L->getOffset(), |
| L->getSrcValue(), L->getSrcValueOffset(), NVT, |
| L->isVolatile(), L->getAlignment()); |
| // Legalized the chain result - switch anything that used the old chain to |
| // use the new one. |
| ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); |
| return NewL; |
| } |
| |
| // Do a non-extending load followed by FP_EXTEND. |
| NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD, |
| L->getMemoryVT(), L->getChain(), |
| L->getBasePtr(), L->getOffset(), |
| L->getSrcValue(), L->getSrcValueOffset(), |
| L->getMemoryVT(), |
| L->isVolatile(), L->getAlignment()); |
| // Legalized the chain result - switch anything that used the old chain to |
| // use the new one. |
| ReplaceValueWith(SDValue(N, 1), NewL.getValue(1)); |
| return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, VT, NewL)); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) { |
| SDValue LHS = GetSoftenedFloat(N->getOperand(1)); |
| SDValue RHS = GetSoftenedFloat(N->getOperand(2)); |
| return DAG.getNode(ISD::SELECT, LHS.getValueType(), N->getOperand(0),LHS,RHS); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) { |
| SDValue LHS = GetSoftenedFloat(N->getOperand(2)); |
| SDValue RHS = GetSoftenedFloat(N->getOperand(3)); |
| return DAG.getNode(ISD::SELECT_CC, LHS.getValueType(), N->getOperand(0), |
| N->getOperand(1), LHS, RHS, N->getOperand(4)); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_SINT_TO_FP(SDNode *N) { |
| SDValue Op = N->getOperand(0); |
| MVT RVT = N->getValueType(0); |
| RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), RVT); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SINT_TO_FP!"); |
| return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatRes_UINT_TO_FP(SDNode *N) { |
| SDValue Op = N->getOperand(0); |
| MVT RVT = N->getValueType(0); |
| RTLIB::Libcall LC = RTLIB::getUINTTOFP(Op.getValueType(), RVT); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UINT_TO_FP!"); |
| return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Operand Float to Integer Conversion.. |
| //===----------------------------------------------------------------------===// |
| |
| bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) { |
| DEBUG(cerr << "Soften float operand " << OpNo << ": "; N->dump(&DAG); |
| cerr << "\n"); |
| SDValue Res = SDValue(); |
| |
| switch (N->getOpcode()) { |
| default: |
| #ifndef NDEBUG |
| cerr << "SoftenFloatOperand Op #" << OpNo << ": "; |
| N->dump(&DAG); cerr << "\n"; |
| #endif |
| assert(0 && "Do not know how to soften this operator's operand!"); |
| abort(); |
| |
| case ISD::BIT_CONVERT: Res = SoftenFloatOp_BIT_CONVERT(N); break; |
| case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break; |
| case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break; |
| case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break; |
| case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break; |
| case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break; |
| case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break; |
| case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break; |
| } |
| |
| // If the result is null, the sub-method took care of registering results etc. |
| if (!Res.getNode()) return false; |
| |
| // If the result is N, the sub-method updated N in place. Check to see if any |
| // operands are new, and if so, mark them. |
| if (Res.getNode() == N) { |
| // Mark N as new and remark N and its operands. This allows us to correctly |
| // revisit N if it needs another step of promotion and allows us to visit |
| // any new operands to N. |
| ReanalyzeNode(N); |
| return true; |
| } |
| |
| assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && |
| "Invalid operand expansion"); |
| |
| ReplaceValueWith(SDValue(N, 0), Res); |
| return false; |
| } |
| |
| /// SoftenSetCCOperands - Soften the operands of a comparison. This code is |
| /// shared among BR_CC, SELECT_CC, and SETCC handlers. |
| void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, |
| ISD::CondCode &CCCode) { |
| SDValue LHSInt = GetSoftenedFloat(NewLHS); |
| SDValue RHSInt = GetSoftenedFloat(NewRHS); |
| MVT VT = NewLHS.getValueType(); |
| |
| assert((VT == MVT::f32 || VT == MVT::f64) && "Unsupported setcc type!"); |
| |
| // Expand into one or more soft-fp libcall(s). |
| RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL; |
| switch (CCCode) { |
| case ISD::SETEQ: |
| case ISD::SETOEQ: |
| LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64; |
| break; |
| case ISD::SETNE: |
| case ISD::SETUNE: |
| LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 : RTLIB::UNE_F64; |
| break; |
| case ISD::SETGE: |
| case ISD::SETOGE: |
| LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64; |
| break; |
| case ISD::SETLT: |
| case ISD::SETOLT: |
| LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64; |
| break; |
| case ISD::SETLE: |
| case ISD::SETOLE: |
| LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64; |
| break; |
| case ISD::SETGT: |
| case ISD::SETOGT: |
| LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64; |
| break; |
| case ISD::SETUO: |
| LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64; |
| break; |
| case ISD::SETO: |
| LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64; |
| break; |
| default: |
| LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64; |
| switch (CCCode) { |
| case ISD::SETONE: |
| // SETONE = SETOLT | SETOGT |
| LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64; |
| // Fallthrough |
| case ISD::SETUGT: |
| LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64; |
| break; |
| case ISD::SETUGE: |
| LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64; |
| break; |
| case ISD::SETULT: |
| LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64; |
| break; |
| case ISD::SETULE: |
| LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64; |
| break; |
| case ISD::SETUEQ: |
| LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64; |
| break; |
| default: assert(false && "Do not know how to soften this setcc!"); |
| } |
| } |
| |
| MVT RetVT = MVT::i32; // FIXME: is this the correct return type? |
| SDValue Ops[2] = { LHSInt, RHSInt }; |
| NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/); |
| NewRHS = DAG.getConstant(0, RetVT); |
| CCCode = TLI.getCmpLibcallCC(LC1); |
| if (LC2 != RTLIB::UNKNOWN_LIBCALL) { |
| SDValue Tmp = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(NewLHS), |
| NewLHS, NewRHS, DAG.getCondCode(CCCode)); |
| NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/); |
| NewLHS = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(NewLHS), NewLHS, |
| NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2))); |
| NewLHS = DAG.getNode(ISD::OR, Tmp.getValueType(), Tmp, NewLHS); |
| NewRHS = SDValue(); |
| } |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_BIT_CONVERT(SDNode *N) { |
| return DAG.getNode(ISD::BIT_CONVERT, N->getValueType(0), |
| GetSoftenedFloat(N->getOperand(0))); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) { |
| MVT SVT = N->getOperand(0).getValueType(); |
| MVT RVT = N->getValueType(0); |
| |
| RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall"); |
| |
| SDValue Op = GetSoftenedFloat(N->getOperand(0)); |
| return MakeLibCall(LC, RVT, &Op, 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) { |
| SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); |
| ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); |
| SoftenSetCCOperands(NewLHS, NewRHS, CCCode); |
| |
| // If SoftenSetCCOperands returned a scalar, we need to compare the result |
| // against zero to select between true and false values. |
| if (NewRHS.getNode() == 0) { |
| NewRHS = DAG.getConstant(0, NewLHS.getValueType()); |
| CCCode = ISD::SETNE; |
| } |
| |
| // Update N to have the operands specified. |
| return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), |
| DAG.getCondCode(CCCode), NewLHS, NewRHS, |
| N->getOperand(4)); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) { |
| MVT RVT = N->getValueType(0); |
| RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); |
| SDValue Op = GetSoftenedFloat(N->getOperand(0)); |
| return MakeLibCall(LC, RVT, &Op, 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) { |
| MVT RVT = N->getValueType(0); |
| RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); |
| SDValue Op = GetSoftenedFloat(N->getOperand(0)); |
| return MakeLibCall(LC, RVT, &Op, 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) { |
| SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); |
| ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); |
| SoftenSetCCOperands(NewLHS, NewRHS, CCCode); |
| |
| // If SoftenSetCCOperands returned a scalar, we need to compare the result |
| // against zero to select between true and false values. |
| if (NewRHS.getNode() == 0) { |
| NewRHS = DAG.getConstant(0, NewLHS.getValueType()); |
| CCCode = ISD::SETNE; |
| } |
| |
| // Update N to have the operands specified. |
| return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, |
| N->getOperand(2), N->getOperand(3), |
| DAG.getCondCode(CCCode)); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) { |
| SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); |
| ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); |
| SoftenSetCCOperands(NewLHS, NewRHS, CCCode); |
| |
| // If SoftenSetCCOperands returned a scalar, use it. |
| if (NewRHS.getNode() == 0) { |
| assert(NewLHS.getValueType() == N->getValueType(0) && |
| "Unexpected setcc expansion!"); |
| return NewLHS; |
| } |
| |
| // Otherwise, update N to have the operands specified. |
| return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, |
| DAG.getCondCode(CCCode)); |
| } |
| |
| SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) { |
| assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); |
| assert(OpNo == 1 && "Can only soften the stored value!"); |
| StoreSDNode *ST = cast<StoreSDNode>(N); |
| SDValue Val = ST->getValue(); |
| |
| if (ST->isTruncatingStore()) |
| // Do an FP_ROUND followed by a non-truncating store. |
| Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, ST->getMemoryVT(), |
| Val, DAG.getIntPtrConstant(0))); |
| else |
| Val = GetSoftenedFloat(Val); |
| |
| return DAG.getStore(ST->getChain(), Val, ST->getBasePtr(), |
| ST->getSrcValue(), ST->getSrcValueOffset(), |
| ST->isVolatile(), ST->getAlignment()); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Float Result Expansion |
| //===----------------------------------------------------------------------===// |
| |
| /// ExpandFloatResult - This method is called when the specified result of the |
| /// specified node is found to need expansion. At this point, the node may also |
| /// have invalid operands or may have other results that need promotion, we just |
| /// know that (at least) one result needs expansion. |
| void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) { |
| DEBUG(cerr << "Expand float result: "; N->dump(&DAG); cerr << "\n"); |
| SDValue Lo, Hi; |
| Lo = Hi = SDValue(); |
| |
| // See if the target wants to custom expand this node. |
| if (TLI.getOperationAction(N->getOpcode(), N->getValueType(ResNo)) == |
| TargetLowering::Custom) { |
| // If the target wants to, allow it to lower this itself. |
| if (SDNode *P = TLI.ReplaceNodeResults(N, DAG)) { |
| // Everything that once used N now uses P. We are guaranteed that the |
| // result value types of N and the result value types of P match. |
| ReplaceNodeWith(N, P); |
| return; |
| } |
| } |
| |
| switch (N->getOpcode()) { |
| default: |
| #ifndef NDEBUG |
| cerr << "ExpandFloatResult #" << ResNo << ": "; |
| N->dump(&DAG); cerr << "\n"; |
| #endif |
| assert(0 && "Do not know how to expand the result of this operator!"); |
| abort(); |
| |
| case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break; |
| case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break; |
| case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break; |
| case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break; |
| |
| case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break; |
| case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break; |
| case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break; |
| case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break; |
| |
| case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break; |
| case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break; |
| case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break; |
| case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break; |
| case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break; |
| case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break; |
| case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break; |
| case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break; |
| case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break; |
| case ISD::SINT_TO_FP: |
| case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break; |
| } |
| |
| // If Lo/Hi is null, the sub-method took care of registering results etc. |
| if (Lo.getNode()) |
| SetExpandedFloat(SDValue(N, ResNo), Lo, Hi); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| assert(NVT.getSizeInBits() == integerPartWidth && |
| "Do not know how to expand this float constant!"); |
| APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().convertToAPInt(); |
| Lo = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1, |
| &C.getRawData()[1])), NVT); |
| Hi = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1, |
| &C.getRawData()[0])), NVT); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; |
| SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::ADD_F32, |
| RTLIB::ADD_F64, |
| RTLIB::ADD_F80, |
| RTLIB::ADD_PPCF128), |
| N->getValueType(0), Ops, 2, |
| false); |
| assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR && "Call lowered wrongly!"); |
| Lo = Call.getOperand(0); Hi = Call.getOperand(1); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| assert(N->getValueType(0) == MVT::ppcf128 && |
| "Logic only correct for ppcf128!"); |
| SDValue Tmp; |
| GetExpandedFloat(N->getOperand(0), Lo, Tmp); |
| Hi = DAG.getNode(ISD::FABS, Tmp.getValueType(), Tmp); |
| // Lo = Hi==fabs(Hi) ? Lo : -Lo; |
| Lo = DAG.getNode(ISD::SELECT_CC, Lo.getValueType(), Tmp, Hi, Lo, |
| DAG.getNode(ISD::FNEG, Lo.getValueType(), Lo), |
| DAG.getCondCode(ISD::SETEQ)); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; |
| SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::DIV_F32, |
| RTLIB::DIV_F64, |
| RTLIB::DIV_F80, |
| RTLIB::DIV_PPCF128), |
| N->getValueType(0), Ops, 2, |
| false); |
| assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR && "Call lowered wrongly!"); |
| Lo = Call.getOperand(0); Hi = Call.getOperand(1); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; |
| SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::MUL_F32, |
| RTLIB::MUL_F64, |
| RTLIB::MUL_F80, |
| RTLIB::MUL_PPCF128), |
| N->getValueType(0), Ops, 2, |
| false); |
| assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR && "Call lowered wrongly!"); |
| Lo = Call.getOperand(0); Hi = Call.getOperand(1); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| GetExpandedFloat(N->getOperand(0), Lo, Hi); |
| Lo = DAG.getNode(ISD::FNEG, Lo.getValueType(), Lo); |
| Hi = DAG.getNode(ISD::FNEG, Hi.getValueType(), Hi); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); |
| Hi = DAG.getNode(ISD::FP_EXTEND, NVT, N->getOperand(0)); |
| Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) }; |
| SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0), |
| RTLIB::SUB_F32, |
| RTLIB::SUB_F64, |
| RTLIB::SUB_F80, |
| RTLIB::SUB_PPCF128), |
| N->getValueType(0), Ops, 2, |
| false); |
| assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR && "Call lowered wrongly!"); |
| Lo = Call.getOperand(0); Hi = Call.getOperand(1); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| if (ISD::isNormalLoad(N)) { |
| ExpandRes_NormalLoad(N, Lo, Hi); |
| return; |
| } |
| |
| assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!"); |
| LoadSDNode *LD = cast<LoadSDNode>(N); |
| SDValue Chain = LD->getChain(); |
| SDValue Ptr = LD->getBasePtr(); |
| |
| MVT NVT = TLI.getTypeToTransformTo(LD->getValueType(0)); |
| assert(NVT.isByteSized() && "Expanded type not byte sized!"); |
| assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?"); |
| |
| Lo = DAG.getExtLoad(LD->getExtensionType(), NVT, Chain, Ptr, |
| LD->getSrcValue(), LD->getSrcValueOffset(), |
| LD->getMemoryVT(), |
| LD->isVolatile(), LD->getAlignment()); |
| |
| // Remember the chain. |
| Chain = Lo.getValue(1); |
| |
| // The high part is undefined. |
| Hi = DAG.getNode(ISD::UNDEF, NVT); |
| |
| // Modified the chain - switch anything that used the old chain to use the |
| // new one. |
| ReplaceValueWith(SDValue(LD, 1), Chain); |
| } |
| |
| void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo, |
| SDValue &Hi) { |
| assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!"); |
| MVT VT = N->getValueType(0); |
| MVT NVT = TLI.getTypeToTransformTo(VT); |
| SDValue Src = N->getOperand(0); |
| MVT SrcVT = Src.getValueType(); |
| |
| // First do an SINT_TO_FP, whether the original was signed or unsigned. |
| if (SrcVT.bitsLE(MVT::i32)) { |
| // The integer can be represented exactly in an f64. |
| Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i32, Src); |
| Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT); |
| Hi = DAG.getNode(ISD::SINT_TO_FP, NVT, Src); |
| } else { |
| RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; |
| if (SrcVT.bitsLE(MVT::i64)) { |
| Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i64, Src); |
| LC = RTLIB::SINTTOFP_I64_PPCF128; |
| } else if (SrcVT.bitsLE(MVT::i128)) { |
| Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i128, Src); |
| LC = RTLIB::SINTTOFP_I128_PPCF128; |
| } |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!"); |
| |
| Hi = MakeLibCall(LC, VT, &Src, 1, true); |
| assert(Hi.getNode()->getOpcode() == ISD::BUILD_PAIR && "Call lowered wrongly!"); |
| Lo = Hi.getOperand(0); Hi = Hi.getOperand(1); |
| } |
| |
| if (N->getOpcode() == ISD::SINT_TO_FP) |
| return; |
| |
| // Unsigned - fix up the SINT_TO_FP value just calculated. |
| Hi = DAG.getNode(ISD::BUILD_PAIR, VT, Lo, Hi); |
| SrcVT = Src.getValueType(); |
| |
| // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128. |
| static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 }; |
| static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 }; |
| static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 }; |
| const uint64_t *Parts = 0; |
| |
| switch (SrcVT.getSimpleVT()) { |
| default: |
| assert(false && "Unsupported UINT_TO_FP!"); |
| case MVT::i32: |
| Parts = TwoE32; |
| case MVT::i64: |
| Parts = TwoE64; |
| case MVT::i128: |
| Parts = TwoE128; |
| } |
| |
| Lo = DAG.getNode(ISD::FADD, VT, Hi, |
| DAG.getConstantFP(APFloat(APInt(128, 2, Parts)), |
| MVT::ppcf128)); |
| Lo = DAG.getNode(ISD::SELECT_CC, VT, Src, DAG.getConstant(0, SrcVT), Lo, Hi, |
| DAG.getCondCode(ISD::SETLT)); |
| Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Lo, |
| DAG.getConstant(1, TLI.getPointerTy())); |
| Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Lo, |
| DAG.getConstant(0, TLI.getPointerTy())); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Float Operand Expansion |
| //===----------------------------------------------------------------------===// |
| |
| /// ExpandFloatOperand - This method is called when the specified operand of the |
| /// specified node is found to need expansion. At this point, all of the result |
| /// types of the node are known to be legal, but other operands of the node may |
| /// need promotion or expansion as well as the specified one. |
| bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) { |
| DEBUG(cerr << "Expand float operand: "; N->dump(&DAG); cerr << "\n"); |
| SDValue Res = SDValue(); |
| |
| if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType()) |
| == TargetLowering::Custom) |
| Res = TLI.LowerOperation(SDValue(N, OpNo), DAG); |
| |
| if (Res.getNode() == 0) { |
| switch (N->getOpcode()) { |
| default: |
| #ifndef NDEBUG |
| cerr << "ExpandFloatOperand Op #" << OpNo << ": "; |
| N->dump(&DAG); cerr << "\n"; |
| #endif |
| assert(0 && "Do not know how to expand this operator's operand!"); |
| abort(); |
| |
| case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break; |
| case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break; |
| case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break; |
| |
| case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break; |
| case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break; |
| case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break; |
| case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break; |
| case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break; |
| case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break; |
| case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N), |
| OpNo); break; |
| } |
| } |
| |
| // If the result is null, the sub-method took care of registering results etc. |
| if (!Res.getNode()) return false; |
| // If the result is N, the sub-method updated N in place. Check to see if any |
| // operands are new, and if so, mark them. |
| if (Res.getNode() == N) { |
| // Mark N as new and remark N and its operands. This allows us to correctly |
| // revisit N if it needs another step of expansion and allows us to visit |
| // any new operands to N. |
| ReanalyzeNode(N); |
| return true; |
| } |
| |
| assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 && |
| "Invalid operand expansion"); |
| |
| ReplaceValueWith(SDValue(N, 0), Res); |
| return false; |
| } |
| |
| /// FloatExpandSetCCOperands - Expand the operands of a comparison. This code |
| /// is shared among BR_CC, SELECT_CC, and SETCC handlers. |
| void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS, |
| SDValue &NewRHS, |
| ISD::CondCode &CCCode) { |
| SDValue LHSLo, LHSHi, RHSLo, RHSHi; |
| GetExpandedFloat(NewLHS, LHSLo, LHSHi); |
| GetExpandedFloat(NewRHS, RHSLo, RHSHi); |
| |
| MVT VT = NewLHS.getValueType(); |
| assert(VT == MVT::ppcf128 && "Unsupported setcc type!"); |
| |
| // FIXME: This generated code sucks. We want to generate |
| // FCMP crN, hi1, hi2 |
| // BNE crN, L: |
| // FCMP crN, lo1, lo2 |
| // The following can be improved, but not that much. |
| SDValue Tmp1, Tmp2, Tmp3; |
| Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, ISD::SETEQ); |
| Tmp2 = DAG.getSetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, CCCode); |
| Tmp3 = DAG.getNode(ISD::AND, Tmp1.getValueType(), Tmp1, Tmp2); |
| Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, ISD::SETNE); |
| Tmp2 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, CCCode); |
| Tmp1 = DAG.getNode(ISD::AND, Tmp1.getValueType(), Tmp1, Tmp2); |
| NewLHS = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp3); |
| NewRHS = SDValue(); // LHS is the result, not a compare. |
| } |
| |
| SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) { |
| SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3); |
| ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get(); |
| FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode); |
| |
| // If ExpandSetCCOperands returned a scalar, we need to compare the result |
| // against zero to select between true and false values. |
| if (NewRHS.getNode() == 0) { |
| NewRHS = DAG.getConstant(0, NewLHS.getValueType()); |
| CCCode = ISD::SETNE; |
| } |
| |
| // Update N to have the operands specified. |
| return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), |
| DAG.getCondCode(CCCode), NewLHS, NewRHS, |
| N->getOperand(4)); |
| } |
| |
| SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) { |
| assert(N->getOperand(0).getValueType() == MVT::ppcf128 && |
| "Logic only correct for ppcf128!"); |
| SDValue Lo, Hi; |
| GetExpandedFloat(N->getOperand(0), Lo, Hi); |
| // Round it the rest of the way (e.g. to f32) if needed. |
| return DAG.getNode(ISD::FP_ROUND, N->getValueType(0), Hi, N->getOperand(1)); |
| } |
| |
| SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) { |
| MVT RVT = N->getValueType(0); |
| RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); |
| return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) { |
| MVT RVT = N->getValueType(0); |
| RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); |
| assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); |
| return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false); |
| } |
| |
| SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) { |
| SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); |
| ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get(); |
| FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode); |
| |
| // If ExpandSetCCOperands returned a scalar, we need to compare the result |
| // against zero to select between true and false values. |
| if (NewRHS.getNode() == 0) { |
| NewRHS = DAG.getConstant(0, NewLHS.getValueType()); |
| CCCode = ISD::SETNE; |
| } |
| |
| // Update N to have the operands specified. |
| return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, |
| N->getOperand(2), N->getOperand(3), |
| DAG.getCondCode(CCCode)); |
| } |
| |
| SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) { |
| SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1); |
| ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get(); |
| FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode); |
| |
| // If ExpandSetCCOperands returned a scalar, use it. |
| if (NewRHS.getNode() == 0) { |
| assert(NewLHS.getValueType() == N->getValueType(0) && |
| "Unexpected setcc expansion!"); |
| return NewLHS; |
| } |
| |
| // Otherwise, update N to have the operands specified. |
| return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS, |
| DAG.getCondCode(CCCode)); |
| } |
| |
| SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) { |
| if (ISD::isNormalStore(N)) |
| return ExpandOp_NormalStore(N, OpNo); |
| |
| assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!"); |
| assert(OpNo == 1 && "Can only expand the stored value so far"); |
| StoreSDNode *ST = cast<StoreSDNode>(N); |
| |
| SDValue Chain = ST->getChain(); |
| SDValue Ptr = ST->getBasePtr(); |
| |
| MVT NVT = TLI.getTypeToTransformTo(ST->getValue().getValueType()); |
| assert(NVT.isByteSized() && "Expanded type not byte sized!"); |
| assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?"); |
| |
| SDValue Lo, Hi; |
| GetExpandedOp(ST->getValue(), Lo, Hi); |
| |
| return DAG.getTruncStore(Chain, Lo, Ptr, |
| ST->getSrcValue(), ST->getSrcValueOffset(), |
| ST->getMemoryVT(), |
| ST->isVolatile(), ST->getAlignment()); |
| } |
