TCERegisterInfo.hh

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:
 
    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.
 
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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/**
 * @file TCERegisterInfo.h
 *
 * Declaration of TCERegisterInfo class.
 *
 * @author Veli-Pekka Jääskeläinen 2007 (vjaaskel-no.spam-cs.tut.fi)
 * @author Heikki Kultala 2011 (heikki.kultala-no.spam-tut.fi)
 */
 
#ifndef TCE_REGISTER_INFO_H
#define TCE_REGISTER_INFO_H
 
#include <llvm/ADT/BitVector.h>
 
#include "TCESubtarget.hh"
 
#define GET_REGINFO_HEADER
#include "TCEGenRegisterInfo.inc"
 
#include "tce_config.h"
 
namespace llvm {
    class TargetInstrInfo;
    class Type;
    class TCEFrameLowering;
 
    /**
     * Class which handles registers in the TCE backend.
     */
    class TCERegisterInfo : public TCEGenRegisterInfo {
    public:
        TCERegisterInfo(const TargetInstrInfo& tii);
        virtual ~TCERegisterInfo() {};
 
        void eliminateCallFramePseudoInstr(
            MachineFunction &MF,
            MachineBasicBlock &MBB,
            MachineBasicBlock::iterator I) const;
 
        const MCPhysReg* getCalleeSavedRegs(const MachineFunction *MF = 0) const override;
 
        BitVector getReservedRegs(const MachineFunction &MF) const override;
 
        #ifdef LLVM_OLDER_THAN_16
        void eliminateFrameIndex(MachineBasicBlock::iterator II,
        #else
        bool eliminateFrameIndex(MachineBasicBlock::iterator II,
        #endif
                                 int SPAdj, unsigned FIOperandNum,
                                 RegScavenger *RS = NULL) const override;
 
        unsigned getRARegister() const;
 
        Register getFrameRegister(const MachineFunction& mf) const override;
 
        bool requiresRegisterScavenging(const MachineFunction&) const override;
    
        int getDwarfRegNum(unsigned regNum, bool isEH) const;
        int getLLVMRegNum(unsigned int, bool) const;
        bool hasFP(const MachineFunction &MF) const;
        void setTFI(const TCEFrameLowering* tfi) { tfi_ = tfi; };
    private:
        void setReservedVectorRegs(llvm::BitVector& reserved) const;
 
        const TargetInstrInfo& tii_;
        const TCEFrameLowering* tfi_;
    };
}
 
 
#endif