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107 lines
4.0 KiB
C++
107 lines
4.0 KiB
C++
//===- PPCRegisterInfo.h - PowerPC Register Information Impl -----*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the PowerPC implementation of the MRegisterInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef POWERPC32_REGISTERINFO_H
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#define POWERPC32_REGISTERINFO_H
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#include "PPC.h"
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#include "PPCGenRegisterInfo.h.inc"
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#include <map>
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namespace llvm {
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class PPCSubtarget;
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class TargetInstrInfo;
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class Type;
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class PPCRegisterInfo : public PPCGenRegisterInfo {
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std::map<unsigned, unsigned> ImmToIdxMap;
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const PPCSubtarget &Subtarget;
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const TargetInstrInfo &TII;
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public:
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PPCRegisterInfo(const PPCSubtarget &SubTarget, const TargetInstrInfo &tii);
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/// getRegisterNumbering - Given the enum value for some register, e.g.
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/// PPC::F14, return the number that it corresponds to (e.g. 14).
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static unsigned getRegisterNumbering(unsigned RegEnum);
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/// Code Generation virtual methods...
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void storeRegToStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI,
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unsigned SrcReg, int FrameIndex,
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const TargetRegisterClass *RC) const;
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void loadRegFromStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI,
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unsigned DestReg, int FrameIndex,
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const TargetRegisterClass *RC) const;
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void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
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unsigned DestReg, unsigned SrcReg,
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const TargetRegisterClass *RC) const;
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void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
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unsigned DestReg, const MachineInstr *Orig) const;
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/// foldMemoryOperand - PowerPC (like most RISC's) can only fold spills into
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/// copy instructions, turning them into load/store instructions.
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virtual MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
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int FrameIndex) const;
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const unsigned *getCalleeSavedRegs() const;
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const TargetRegisterClass* const* getCalleeSavedRegClasses() const;
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BitVector getReservedRegs(const MachineFunction &MF) const;
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/// targetHandlesStackFrameRounding - Returns true if the target is
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/// responsible for rounding up the stack frame (probably at emitPrologue
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/// time).
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bool targetHandlesStackFrameRounding() const { return true; }
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bool hasFP(const MachineFunction &MF) const;
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void eliminateCallFramePseudoInstr(MachineFunction &MF,
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MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const;
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/// usesLR - Returns if the link registers (LR) has been used in the function.
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///
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bool usesLR(MachineFunction &MF) const;
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void lowerDynamicAlloc(MachineBasicBlock::iterator II) const;
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void eliminateFrameIndex(MachineBasicBlock::iterator II,
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int SPAdj, RegScavenger *RS = NULL) const;
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/// determineFrameLayout - Determine the size of the frame and maximum call
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/// frame size.
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void determineFrameLayout(MachineFunction &MF) const;
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void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
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RegScavenger *RS = NULL) const;
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void emitPrologue(MachineFunction &MF) const;
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
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// Debug information queries.
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unsigned getRARegister() const;
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unsigned getFrameRegister(MachineFunction &MF) const;
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void getInitialFrameState(std::vector<MachineMove> &Moves) const;
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// Exception handling queries.
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unsigned getEHExceptionRegister() const;
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unsigned getEHHandlerRegister() const;
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};
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} // end namespace llvm
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#endif
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