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//===--- HexagonBitTracker.h ----------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef HEXAGONBITTRACKER_H
#define HEXAGONBITTRACKER_H
#include "BitTracker.h"
#include "llvm/ADT/DenseMap.h"
namespace llvm {
class HexagonInstrInfo;
class HexagonRegisterInfo;
struct HexagonEvaluator : public BitTracker::MachineEvaluator {
typedef BitTracker::CellMapType CellMapType;
typedef BitTracker::RegisterRef RegisterRef;
typedef BitTracker::RegisterCell RegisterCell;
typedef BitTracker::BranchTargetList BranchTargetList;
HexagonEvaluator(const HexagonRegisterInfo &tri, MachineRegisterInfo &mri,
const HexagonInstrInfo &tii, MachineFunction &mf);
bool evaluate(const MachineInstr &MI, const CellMapType &Inputs,
CellMapType &Outputs) const override;
bool evaluate(const MachineInstr &BI, const CellMapType &Inputs,
BranchTargetList &Targets, bool &FallsThru) const override;
BitTracker::BitMask mask(unsigned Reg, unsigned Sub) const override;
MachineFunction &MF;
MachineFrameInfo &MFI;
const HexagonInstrInfo &TII;
private:
bool evaluateLoad(const MachineInstr &MI, const CellMapType &Inputs,
CellMapType &Outputs) const;
bool evaluateFormalCopy(const MachineInstr &MI, const CellMapType &Inputs,
CellMapType &Outputs) const;
unsigned getNextPhysReg(unsigned PReg, unsigned Width) const;
unsigned getVirtRegFor(unsigned PReg) const;
// Type of formal parameter extension.
struct ExtType {
enum { SExt, ZExt };
char Type;
uint16_t Width;
ExtType() : Type(0), Width(0) {}
ExtType(char t, uint16_t w) : Type(t), Width(w) {}
};
// Map VR -> extension type.
typedef DenseMap<unsigned, ExtType> RegExtMap;
RegExtMap VRX;
};
} // end namespace llvm
#endif
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