mirror of
https://github.com/c64scene-ar/llvm-6502.git
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5a11e02fbd
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75989 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
//===- SystemZRegisterInfo.h - SystemZ 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 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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//
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// This file contains the SystemZ implementation of the TargetRegisterInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SystemZREGISTERINFO_H
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#define SystemZREGISTERINFO_H
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#include "llvm/Target/TargetRegisterInfo.h"
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#include "SystemZGenRegisterInfo.h.inc"
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namespace llvm {
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namespace SystemZ {
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/// SubregIndex - The index of various sized subregister classes. Note that
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/// these indices must be kept in sync with the class indices in the
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/// SystemZRegisterInfo.td file.
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enum SubregIndex {
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SUBREG_32BIT = 1, SUBREG_EVEN = 1, SUBREG_ODD = 2
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};
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}
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class SystemZSubtarget;
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class SystemZInstrInfo;
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class Type;
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struct SystemZRegisterInfo : public SystemZGenRegisterInfo {
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SystemZTargetMachine &TM;
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const SystemZInstrInfo &TII;
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SystemZRegisterInfo(SystemZTargetMachine &tm, const SystemZInstrInfo &tii);
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/// Code Generation virtual methods...
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const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
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const TargetRegisterClass* const* getCalleeSavedRegClasses(
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const MachineFunction *MF = 0) const;
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BitVector getReservedRegs(const MachineFunction &MF) const;
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bool hasReservedCallFrame(MachineFunction &MF) const { return true; }
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bool hasFP(const MachineFunction &MF) const;
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int getFrameIndexOffset(MachineFunction &MF, int FI) 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 eliminateFrameIndex(MachineBasicBlock::iterator II,
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int SPAdj, RegScavenger *RS = NULL) const;
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void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
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RegScavenger *RS) 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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// Exception handling queries.
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unsigned getEHExceptionRegister() const;
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unsigned getEHHandlerRegister() const;
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int getDwarfRegNum(unsigned RegNum, bool isEH) const;
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};
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} // end namespace llvm
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#endif
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