#include "PIC16.h"
#include "PIC16Subtarget.h"
#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Target/TargetLowering.h"
#include <map>
PIC16Store,
PIC16StWF,
Banksel,
- MTLO,
- MTHI,
+ MTLO, // Move to low part of FSR
+ MTHI, // Move to high part of FSR
+ MTPCLATH, // Move to PCLATCH
+ PIC16Connect, // General connector for PIC16 nodes
BCF,
LSLF, // PIC16 Logical shift left
LRLF, // PIC16 Logical shift right
RLF, // Rotate left through carry
RRF, // Rotate right through carry
CALL, // PIC16 Call instruction
- SUBCC, // Compare for equality or inequality.
+ CALLW, // PIC16 CALLW instruction
+ SUBCC, // Compare for equality or inequality.
SELECT_ICC, // Psuedo to be caught in schedular and expanded to brcond.
BRCOND, // Conditional branch.
- PIC16StopPoint,
+ RET, // Return.
Dummy
};
ROM_SPACE = 1 // ROM address space number is 1
};
enum PIC16Libcall {
- MUL_I8,
+ MUL_I8 = RTLIB::UNKNOWN_LIBCALL + 1,
SRA_I8,
SLL_I8,
SRL_I8,
/// DAG node.
virtual const char *getTargetNodeName(unsigned Opcode) const;
/// getSetCCResultType - Return the ISD::SETCC ValueType
- virtual MVT getSetCCResultType(MVT ValType) const;
- SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
+ virtual MVT::SimpleValueType getSetCCResultType(EVT ValType) const;
+ virtual MVT::SimpleValueType getCmpLibcallReturnType() const;
SDValue LowerShift(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerMUL(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 LowerCallReturn(SDValue Op, SDValue Chain, SDValue FrameAddress,
- SDValue InFlag, SelectionDAG &DAG);
- SDValue LowerCallArguments(SDValue Op, SDValue Chain, SDValue FrameAddress,
- SDValue InFlag, SelectionDAG &DAG);
+ // Call returns
+ SDValue
+ LowerDirectCallReturn(SDValue RetLabel, SDValue Chain, SDValue InFlag,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals);
+ SDValue
+ LowerIndirectCallReturn(SDValue Chain, SDValue InFlag,
+ SDValue DataAddr_Lo, SDValue DataAddr_Hi,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals);
+
+ // Call arguments
+ SDValue
+ LowerDirectCallArguments(SDValue ArgLabel, SDValue Chain, SDValue InFlag,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ DebugLoc dl, SelectionDAG &DAG);
+
+ SDValue
+ LowerIndirectCallArguments(SDValue Chain, SDValue InFlag,
+ SDValue DataAddr_Lo, SDValue DataAddr_Hi,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG);
+
SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG);
SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);
- SDValue LowerStopPoint(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;
+ MachineBasicBlock *MBB,
+ DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM) const;
virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG);
+ virtual SDValue
+ LowerFormalArguments(SDValue Chain,
+ CallingConv::ID CallConv,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals);
+
+ virtual SDValue
+ LowerCall(SDValue Chain, SDValue Callee,
+ CallingConv::ID CallConv, bool isVarArg, bool isTailCall,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals);
+
+ virtual SDValue
+ LowerReturn(SDValue Chain,
+ CallingConv::ID CallConv, bool isVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ DebugLoc dl, SelectionDAG &DAG);
+
SDValue ExpandStore(SDNode *N, SelectionDAG &DAG);
SDValue ExpandLoad(SDNode *N, SelectionDAG &DAG);
SDValue ExpandGlobalAddress(SDNode *N, SelectionDAG &DAG);
// This function returns the Tmp Offset for FrameIndex. If any TmpOffset
// already exists for the FI then it returns the same else it creates the
// new offset and returns.
- unsigned GetTmpOffsetForFI(unsigned FI);
+ unsigned GetTmpOffsetForFI(unsigned FI, unsigned slot_size);
void ResetTmpOffsetMap() { FiTmpOffsetMap.clear(); SetTmpSize(0); }
+ void InitReservedFrameCount(const Function *F);
// Return the size of Tmp variable
unsigned GetTmpSize() { return TmpSize; }
void SetTmpSize(unsigned Size) { TmpSize = Size; }
+ /// getFunctionAlignment - Return the Log2 alignment of this function.
+ virtual unsigned getFunctionAlignment(const Function *) const {
+ // FIXME: The function never seems to be aligned.
+ return 1;
+ }
private:
// If the Node is a BUILD_PAIR representing a direct Address,
// then this function will return true.
void LegalizeFrameIndex(SDValue Op, SelectionDAG &DAG, SDValue &ES,
int &Offset);
+ // For indirect calls data address of the callee frame need to be
+ // extracted. This function fills the arguments DataAddr_Lo and
+ // DataAddr_Hi with the address of the callee frame.
+ void GetDataAddress(DebugLoc dl, SDValue Callee, SDValue &Chain,
+ SDValue &DataAddr_Lo, SDValue &DataAddr_Hi,
+ SelectionDAG &DAG);
+
// We can not have both operands of a binary operation in W.
// This function is used to put one operand on stack and generate a load.
SDValue ConvertToMemOperand(SDValue Op, SelectionDAG &DAG, DebugLoc dl);
// This function checks if we need to put an operand of an operation on
// stack and generate a load or not.
- bool NeedToConvertToMemOp(SDValue Op, unsigned &MemOp);
+ // DAG parameter is required to access DAG information during
+ // analysis.
+ bool NeedToConvertToMemOp(SDValue Op, unsigned &MemOp, SelectionDAG &DAG);
/// Subtarget - Keep a pointer to the PIC16Subtarget around so that we can
/// make the right decision when generating code for different targets.
const char *getPIC16LibcallName(PIC16ISD::PIC16Libcall Call);
// Make PIC16 Libcall.
- SDValue MakePIC16Libcall(PIC16ISD::PIC16Libcall Call, MVT RetVT,
+ SDValue MakePIC16Libcall(PIC16ISD::PIC16Libcall Call, EVT RetVT,
const SDValue *Ops, unsigned NumOps, bool isSigned,
SelectionDAG &DAG, DebugLoc dl);
// Check if operation has a direct load operand.
inline bool isDirectLoad(const SDValue Op);
+ public:
+ // Keep a pointer to SelectionDAGISel to access its public
+ // interface (It is required during legalization)
+ SelectionDAGISel *ISel;
+
private:
// The frameindexes generated for spill/reload are stack based.
// This maps maintain zero based indexes for these FIs.
std::map<unsigned, unsigned> FiTmpOffsetMap;
unsigned TmpSize;
+
+ // These are the frames for return value and argument passing
+ // These FrameIndices will be expanded to foo.frame external symbol
+ // and all others will be expanded to foo.tmp external symbol.
+ unsigned ReservedFrameCount;
};
} // namespace llvm
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