1 //===--- HexagonBitTracker.h ----------------------------------------------===// 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 #ifndef HEXAGONBITTRACKER_H 11 #define HEXAGONBITTRACKER_H 12 13 #include "BitTracker.h" 14 #include "llvm/ADT/DenseMap.h" 15 16 namespace llvm { 17 class HexagonInstrInfo; 18 class HexagonRegisterInfo; 19 20 struct HexagonEvaluator : public BitTracker::MachineEvaluator { 21 typedef BitTracker::CellMapType CellMapType; 22 typedef BitTracker::RegisterRef RegisterRef; 23 typedef BitTracker::RegisterCell RegisterCell; 24 typedef BitTracker::BranchTargetList BranchTargetList; 25 26 HexagonEvaluator(const HexagonRegisterInfo &tri, MachineRegisterInfo &mri, 27 const HexagonInstrInfo &tii, MachineFunction &mf); 28 29 bool evaluate(const MachineInstr &MI, const CellMapType &Inputs, 30 CellMapType &Outputs) const override; 31 bool evaluate(const MachineInstr &BI, const CellMapType &Inputs, 32 BranchTargetList &Targets, bool &FallsThru) const override; 33 34 BitTracker::BitMask mask(unsigned Reg, unsigned Sub) const override; 35 36 MachineFunction &MF; 37 MachineFrameInfo &MFI; 38 const HexagonInstrInfo &TII; 39 40 private: 41 bool evaluateLoad(const MachineInstr &MI, const CellMapType &Inputs, 42 CellMapType &Outputs) const; 43 bool evaluateFormalCopy(const MachineInstr &MI, const CellMapType &Inputs, 44 CellMapType &Outputs) const; 45 46 unsigned getNextPhysReg(unsigned PReg, unsigned Width) const; 47 unsigned getVirtRegFor(unsigned PReg) const; 48 49 // Type of formal parameter extension. 50 struct ExtType { 51 enum { SExt, ZExt }; 52 char Type; 53 uint16_t Width; 54 ExtType() : Type(0), Width(0) {} 55 ExtType(char t, uint16_t w) : Type(t), Width(w) {} 56 }; 57 // Map VR -> extension type. 58 typedef DenseMap<unsigned, ExtType> RegExtMap; 59 RegExtMap VRX; 60 }; 61 62 } // end namespace llvm 63 64 #endif 65
