PIC16ISelLowering.h [plain text]
#ifndef PIC16ISELLOWERING_H
#define PIC16ISELLOWERING_H
#include "PIC16.h"
#include "PIC16Subtarget.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Target/TargetLowering.h"
#include <map>
namespace llvm {
namespace PIC16ISD {
enum NodeType {
FIRST_NUMBER = ISD::BUILTIN_OP_END,
Lo, Hi, PIC16Load,
PIC16LdArg,
PIC16LdWF,
PIC16Store,
PIC16StWF,
Banksel,
MTLO, MTHI, MTPCLATH, PIC16Connect, BCF,
LSLF, LRLF, RLF, RRF, CALL, CALLW, SUBCC, SELECT_ICC, BRCOND, Dummy
};
enum AddressSpace {
RAM_SPACE = 0, ROM_SPACE = 1 };
enum PIC16Libcall {
MUL_I8,
SRA_I8,
SLL_I8,
SRL_I8,
PIC16UnknownCall
};
}
class PIC16TargetLowering : public TargetLowering {
public:
explicit PIC16TargetLowering(PIC16TargetMachine &TM);
virtual const char *getTargetNodeName(unsigned Opcode) const;
virtual MVT getSetCCResultType(MVT ValType) const;
SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
SDValue LowerShift(SDValue Op, SelectionDAG &DAG);
SDValue LowerADD(SDValue Op, SelectionDAG &DAG);
SDValue LowerSUB(SDValue Op, SelectionDAG &DAG);
SDValue LowerBinOp(SDValue Op, SelectionDAG &DAG);
SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
SDValue
LowerDirectCallReturn(SDValue Op, SDValue Chain, SDValue FrameAddress,
SDValue InFlag, SelectionDAG &DAG);
SDValue
LowerIndirectCallReturn(SDValue Op, SDValue Chain, SDValue InFlag,
SDValue DataAddr_Lo, SDValue DataAddr_Hi,
SelectionDAG &DAG);
SDValue
LowerDirectCallArguments(SDValue Op, SDValue Chain, SDValue FrameAddress,
SDValue InFlag, SelectionDAG &DAG);
SDValue
LowerIndirectCallArguments(SDValue Op, SDValue Chain, SDValue InFlag,
SDValue DataAddr_Lo, SDValue DataAddr_Hi,
SelectionDAG &DAG);
SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG);
SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);
SDValue getPIC16Cmp(SDValue LHS, SDValue RHS, unsigned OrigCC, SDValue &CC,
SelectionDAG &DAG, DebugLoc dl);
virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *MBB) const;
virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
virtual void ReplaceNodeResults(SDNode *N,
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG);
virtual void LowerOperationWrapper(SDNode *N,
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG);
SDValue ExpandStore(SDNode *N, SelectionDAG &DAG);
SDValue ExpandLoad(SDNode *N, SelectionDAG &DAG);
SDValue ExpandGlobalAddress(SDNode *N, SelectionDAG &DAG);
SDValue ExpandExternalSymbol(SDNode *N, SelectionDAG &DAG);
SDValue ExpandFrameIndex(SDNode *N, SelectionDAG &DAG);
SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
SDValue PerformPIC16LoadCombine(SDNode *N, DAGCombinerInfo &DCI) const;
SDValue PerformStoreCombine(SDNode *N, DAGCombinerInfo &DCI) const;
unsigned GetTmpOffsetForFI(unsigned FI, unsigned slot_size);
void ResetTmpOffsetMap() { FiTmpOffsetMap.clear(); SetTmpSize(0); }
void InitReservedFrameCount(const Function *F);
unsigned GetTmpSize() { return TmpSize; }
void SetTmpSize(unsigned Size) { TmpSize = Size; }
private:
bool isDirectAddress(const SDValue &Op);
bool isRomAddress(const SDValue &Op);
void GetExpandedParts(SDValue Op, SelectionDAG &DAG, SDValue &Lo,
SDValue &Hi);
void LegalizeAddress(SDValue Ptr, SelectionDAG &DAG, SDValue &Chain,
SDValue &NewPtr, unsigned &Offset, DebugLoc dl);
void LegalizeFrameIndex(SDValue Op, SelectionDAG &DAG, SDValue &ES,
int &Offset);
SDValue LegalizeCALL(SDValue Op, SelectionDAG &DAG);
void GetDataAddress(DebugLoc dl, SDValue Callee, SDValue &Chain,
SDValue &DataAddr_Lo, SDValue &DataAddr_Hi,
SelectionDAG &DAG);
SDValue ConvertToMemOperand(SDValue Op, SelectionDAG &DAG, DebugLoc dl);
bool NeedToConvertToMemOp(SDValue Op, unsigned &MemOp);
const PIC16Subtarget *Subtarget;
const char *PIC16LibcallNames[PIC16ISD::PIC16UnknownCall];
void setPIC16LibcallName(PIC16ISD::PIC16Libcall Call, const char *Name);
const char *getPIC16LibcallName(PIC16ISD::PIC16Libcall Call);
SDValue MakePIC16Libcall(PIC16ISD::PIC16Libcall Call, MVT RetVT,
const SDValue *Ops, unsigned NumOps, bool isSigned,
SelectionDAG &DAG, DebugLoc dl);
inline bool isDirectLoad(const SDValue Op);
private:
std::map<unsigned, unsigned> FiTmpOffsetMap;
unsigned TmpSize;
unsigned ReservedFrameCount;
};
}
#endif // PIC16ISELLOWERING_H