mirror of
https://github.com/c64scene-ar/llvm-6502.git
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2f616bff7e
bugs including making sure that the TOS links back to the previous frame, that the maximum call frame size is not included twice when using frame pointers, no longer growing the frame on calls, double storing of SP and a cleaner/faster dynamic alloca. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31792 91177308-0d34-0410-b5e6-96231b3b80d8
83 lines
3.1 KiB
C++
83 lines
3.1 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 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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/// 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 *getCalleeSaveRegs() const;
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const TargetRegisterClass* const* getCalleeSaveRegClasses() 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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void lowerDynamicAlloc(MachineBasicBlock::iterator II) const;
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void eliminateFrameIndex(MachineBasicBlock::iterator II) 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 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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};
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} // end namespace llvm
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#endif
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