HexagonISelLowering.h [plain text]
#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONISELLOWERING_H
#define LLVM_LIB_TARGET_HEXAGON_HEXAGONISELLOWERING_H
#include "Hexagon.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/Target/TargetLowering.h"
namespace llvm {
bool isPositiveHalfWord(SDNode *N);
namespace HexagonISD {
enum {
FIRST_NUMBER = ISD::BUILTIN_OP_END,
CONST32,
CONST32_GP, CONST32_Int_Real,
FCONST32,
SETCC,
ADJDYNALLOC,
ARGEXTEND,
CMPICC, CMPFCC, BRICC, BRFCC, SELECT_ICC, SELECT_FCC,
Hi, Lo,
FTOI, ITOF,
CALLv3, CALLv3nr, CALLR,
RET_FLAG, BR_JT, BARRIER, POPCOUNT,
COMBINE,
WrapperJT,
WrapperCP,
WrapperCombineII,
WrapperCombineRR,
WrapperCombineRI_V4,
WrapperCombineIR_V4,
WrapperPackhl,
WrapperSplatB,
WrapperSplatH,
WrapperShuffEB,
WrapperShuffEH,
WrapperShuffOB,
WrapperShuffOH,
TC_RETURN,
EH_RETURN,
DCFETCH
};
}
class HexagonSubtarget;
class HexagonTargetLowering : public TargetLowering {
int VarArgsFrameOffset;
bool CanReturnSmallStruct(const Function* CalleeFn,
unsigned& RetSize) const;
public:
const HexagonSubtarget *Subtarget;
explicit HexagonTargetLowering(const TargetMachine &TM,
const HexagonSubtarget &Subtarget);
bool
IsEligibleForTailCallOptimization(SDValue Callee,
CallingConv::ID CalleeCC,
bool isVarArg,
bool isCalleeStructRet,
bool isCallerStructRet,
const
SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
const SmallVectorImpl<ISD::InputArg> &Ins,
SelectionDAG& DAG) const;
bool isTruncateFree(Type *Ty1, Type *Ty2) const override;
bool isTruncateFree(EVT VT1, EVT VT2) const override;
bool allowTruncateForTailCall(Type *Ty1, Type *Ty2) const override;
SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override;
const char *getTargetNodeName(unsigned Opcode) const override;
SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerINLINEASM(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerEH_LABEL(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerEH_RETURN(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const override;
SDValue LowerGLOBALADDRESS(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerCall(TargetLowering::CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const override;
SDValue LowerCallResult(SDValue Chain, SDValue InFlag,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals,
const SmallVectorImpl<SDValue> &OutVals,
SDValue Callee) const;
SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerATOMIC_FENCE(SDValue Op, SelectionDAG& DAG) const;
SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
SDLoc dl, SelectionDAG &DAG) const override;
MachineBasicBlock *
EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *BB) const override;
SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
EVT getSetCCResultType(LLVMContext &C, EVT VT) const override {
if (!VT.isVector())
return MVT::i1;
else
return EVT::getVectorVT(C, MVT::i1, VT.getVectorNumElements());
}
bool getPostIndexedAddressParts(SDNode *N, SDNode *Op,
SDValue &Base, SDValue &Offset,
ISD::MemIndexedMode &AM,
SelectionDAG &DAG) const override;
std::pair<unsigned, const TargetRegisterClass *>
getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
const std::string &Constraint,
MVT VT) const override;
SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const;
bool isLegalAddressingMode(const AddrMode &AM, Type *Ty) const override;
bool isFPImmLegal(const APFloat &Imm, EVT VT) const override;
bool isLegalICmpImmediate(int64_t Imm) const override;
};
}
#endif // Hexagon_ISELLOWERING_H