text: //===- SIMachineFunctionInfo.h - SIMachineFunctionInfo interface -*- C++ -*-==//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is distributed under the University of Illinois Open Source
  // License. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  //
  /// \file
  //
  //===----------------------------------------------------------------------===//
  
  
  #ifndef LLVM_LIB_TARGET_R600_SIMACHINEFUNCTIONINFO_H
  #define LLVM_LIB_TARGET_R600_SIMACHINEFUNCTIONINFO_H
  
  #include "AMDGPUMachineFunction.h"
  #include "SIRegisterInfo.h"
  #include <map>
  
  namespace llvm {
  
  class MachineRegisterInfo;
  
  /// This class keeps track of the SPI_SP_INPUT_ADDR config register, which
  /// tells the hardware which interpolation parameters to load.
  class SIMachineFunctionInfo : public AMDGPUMachineFunction {
    void anchor() override;
  
    unsigned TIDReg;
    bool HasSpilledVGPRs;
  
  public:
  
    struct SpilledReg {
      unsigned VGPR;
      int Lane;
      SpilledReg(unsigned R, int L) : VGPR (R), Lane (L) { }
      SpilledReg() : VGPR(0), Lane(-1) { }
      bool hasLane() { return Lane != -1;}
    };
  
    // SIMachineFunctionInfo definition
  
    SIMachineFunctionInfo(const MachineFunction &MF);
    SpilledReg getSpilledReg(MachineFunction *MF, unsigned FrameIndex,
                             unsigned SubIdx);
    unsigned PSInputAddr;
    unsigned NumUserSGPRs;
    std::map<unsigned, unsigned> LaneVGPRs;
    unsigned LDSWaveSpillSize;
    unsigned ScratchOffsetReg;
    bool hasCalculatedTID() const { return TIDReg != AMDGPU::NoRegister; };
    unsigned getTIDReg() const { return TIDReg; };
    void setTIDReg(unsigned Reg) { TIDReg = Reg; }
    bool hasSpilledVGPRs() const { return HasSpilledVGPRs; }
    void setHasSpilledVGPRs(bool Spill = true) { HasSpilledVGPRs = Spill; }
  
    unsigned getMaximumWorkGroupSize(const MachineFunction &MF) const;
  };
  
  } // End namespace llvm
  
  
  #endif
  