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//===-- MipsSEISelDAGToDAG.h - A Dag to Dag Inst Selector for MipsSE -----===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Subclass of MipsDAGToDAGISel specialized for mips32/64.
//
//===----------------------------------------------------------------------===//
#ifndef MIPSSEISELDAGTODAG_H
#define MIPSSEISELDAGTODAG_H
#include "MipsISelDAGToDAG.h"
namespace llvm {
class MipsSEDAGToDAGISel : public MipsDAGToDAGISel {
public:
explicit MipsSEDAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {}
private:
bool runOnMachineFunction(MachineFunction &MF) override;
void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
MachineFunction &MF);
unsigned getMSACtrlReg(const SDValue RegIdx) const;
bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&);
std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc dl,
EVT Ty, bool HasLo, bool HasHi);
SDNode *selectAddESubE(unsigned MOp, SDValue InFlag, SDValue CmpLHS,
SDLoc DL, SDNode *Node) const;
bool selectAddrFrameIndex(SDValue Addr, SDValue &Base, SDValue &Offset) const;
bool selectAddrFrameIndexOffset(SDValue Addr, SDValue &Base, SDValue &Offset,
unsigned OffsetBits) const;
bool selectAddrRegImm(SDValue Addr, SDValue &Base,
SDValue &Offset) const override;
bool selectAddrRegReg(SDValue Addr, SDValue &Base,
SDValue &Offset) const override;
bool selectAddrDefault(SDValue Addr, SDValue &Base,
SDValue &Offset) const override;
bool selectIntAddr(SDValue Addr, SDValue &Base,
SDValue &Offset) const override;
bool selectAddrRegImm10(SDValue Addr, SDValue &Base,
SDValue &Offset) const;
bool selectAddrRegImm12(SDValue Addr, SDValue &Base,
SDValue &Offset) const;
bool selectIntAddrMM(SDValue Addr, SDValue &Base,
SDValue &Offset) const override;
bool selectIntAddrMSA(SDValue Addr, SDValue &Base,
SDValue &Offset) const override;
/// \brief Select constant vector splats.
bool selectVSplat(SDNode *N, APInt &Imm) const override;
/// \brief Select constant vector splats whose value fits in a given integer.
bool selectVSplatCommon(SDValue N, SDValue &Imm, bool Signed,
unsigned ImmBitSize) const;
/// \brief Select constant vector splats whose value fits in a uimm1.
bool selectVSplatUimm1(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value fits in a uimm2.
bool selectVSplatUimm2(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value fits in a uimm3.
bool selectVSplatUimm3(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value fits in a uimm4.
bool selectVSplatUimm4(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value fits in a uimm5.
bool selectVSplatUimm5(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value fits in a uimm6.
bool selectVSplatUimm6(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value fits in a uimm8.
bool selectVSplatUimm8(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value fits in a simm5.
bool selectVSplatSimm5(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value is a power of 2.
bool selectVSplatUimmPow2(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value is the inverse of a
/// power of 2.
bool selectVSplatUimmInvPow2(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value is a run of set bits
/// ending at the most significant bit
bool selectVSplatMaskL(SDValue N, SDValue &Imm) const override;
/// \brief Select constant vector splats whose value is a run of set bits
/// starting at bit zero.
bool selectVSplatMaskR(SDValue N, SDValue &Imm) const override;
std::pair<bool, SDNode*> selectNode(SDNode *Node) override;
void processFunctionAfterISel(MachineFunction &MF) override;
// Insert instructions to initialize the global base register in the
// first MBB of the function.
void initGlobalBaseReg(MachineFunction &MF);
};
FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
}
#endif
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