src/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.h

   1 //===-- MipsSEISelDAGToDAG.h - A Dag to Dag Inst Selector for MipsSE -----===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // Subclass of MipsDAGToDAGISel specialized for mips32/64.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_MIPS_MIPSSEISELDAGTODAG_H
  15 #define LLVM_LIB_TARGET_MIPS_MIPSSEISELDAGTODAG_H
  16
  17 #include "MipsISelDAGToDAG.h"
  18
  19 namespace llvm {
  20
  21 class MipsSEDAGToDAGISel : public MipsDAGToDAGISel {
  22
  23 public:
  24   explicit MipsSEDAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {}
  25
  26 private:
  27
  28   bool runOnMachineFunction(MachineFunction &MF) override;
  29
  30   void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
  31                              MachineFunction &MF);
  32
  33   unsigned getMSACtrlReg(const SDValue RegIdx) const;
  34
  35   bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&);
  36
  37   std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc dl,
  38                                          EVT Ty, bool HasLo, bool HasHi);
  39
  40   SDNode *selectAddESubE(unsigned MOp, SDValue InFlag, SDValue CmpLHS,
  41                          SDLoc DL, SDNode *Node) const;
  42
  43   bool selectAddrFrameIndex(SDValue Addr, SDValue &Base, SDValue &Offset) const;
  44   bool selectAddrFrameIndexOffset(SDValue Addr, SDValue &Base, SDValue &Offset,
  45                                   unsigned OffsetBits) const;
  46
  47   bool selectAddrRegImm(SDValue Addr, SDValue &Base,
  48                         SDValue &Offset) const override;
  49
  50   bool selectAddrRegReg(SDValue Addr, SDValue &Base,
  51                         SDValue &Offset) const override;
  52
  53   bool selectAddrDefault(SDValue Addr, SDValue &Base,
  54                          SDValue &Offset) const override;
  55
  56   bool selectIntAddr(SDValue Addr, SDValue &Base,
  57                      SDValue &Offset) const override;
  58
  59   bool selectAddrRegImm10(SDValue Addr, SDValue &Base,
  60                           SDValue &Offset) const;
  61
  62   bool selectAddrRegImm12(SDValue Addr, SDValue &Base,
  63                           SDValue &Offset) const;
  64
  65   bool selectIntAddrMM(SDValue Addr, SDValue &Base,
  66                        SDValue &Offset) const override;
  67
  68   bool selectIntAddrMSA(SDValue Addr, SDValue &Base,
  69                         SDValue &Offset) const override;
  70
  71   /// \brief Select constant vector splats.
  72   bool selectVSplat(SDNode *N, APInt &Imm) const override;
  73   /// \brief Select constant vector splats whose value fits in a given integer.
  74   bool selectVSplatCommon(SDValue N, SDValue &Imm, bool Signed,
  75                                   unsigned ImmBitSize) const;
  76   /// \brief Select constant vector splats whose value fits in a uimm1.
  77   bool selectVSplatUimm1(SDValue N, SDValue &Imm) const override;
  78   /// \brief Select constant vector splats whose value fits in a uimm2.
  79   bool selectVSplatUimm2(SDValue N, SDValue &Imm) const override;
  80   /// \brief Select constant vector splats whose value fits in a uimm3.
  81   bool selectVSplatUimm3(SDValue N, SDValue &Imm) const override;
  82   /// \brief Select constant vector splats whose value fits in a uimm4.
  83   bool selectVSplatUimm4(SDValue N, SDValue &Imm) const override;
  84   /// \brief Select constant vector splats whose value fits in a uimm5.
  85   bool selectVSplatUimm5(SDValue N, SDValue &Imm) const override;
  86   /// \brief Select constant vector splats whose value fits in a uimm6.
  87   bool selectVSplatUimm6(SDValue N, SDValue &Imm) const override;
  88   /// \brief Select constant vector splats whose value fits in a uimm8.
  89   bool selectVSplatUimm8(SDValue N, SDValue &Imm) const override;
  90   /// \brief Select constant vector splats whose value fits in a simm5.
  91   bool selectVSplatSimm5(SDValue N, SDValue &Imm) const override;
  92   /// \brief Select constant vector splats whose value is a power of 2.
  93   bool selectVSplatUimmPow2(SDValue N, SDValue &Imm) const override;
  94   /// \brief Select constant vector splats whose value is the inverse of a
  95   /// power of 2.
  96   bool selectVSplatUimmInvPow2(SDValue N, SDValue &Imm) const override;
  97   /// \brief Select constant vector splats whose value is a run of set bits
  98   /// ending at the most significant bit
  99   bool selectVSplatMaskL(SDValue N, SDValue &Imm) const override;
 100   /// \brief Select constant vector splats whose value is a run of set bits
 101   /// starting at bit zero.
 102   bool selectVSplatMaskR(SDValue N, SDValue &Imm) const override;
 103
 104   std::pair<bool, SDNode*> selectNode(SDNode *Node) override;
 105
 106   void processFunctionAfterISel(MachineFunction &MF) override;
 107
 108   // Insert instructions to initialize the global base register in the
 109   // first MBB of the function.
 110   void initGlobalBaseReg(MachineFunction &MF);
 111 };
 112
 113 FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
 114
 115 }
 116
 117 #endif