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