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58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
//=- SystemZFrameLowering.h - Define frame lowering for z/System -*- 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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//
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//
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//===----------------------------------------------------------------------===//
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#ifndef SYSTEMZ_FRAMEINFO_H
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#define SYSTEMZ_FRAMEINFO_H
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#include "SystemZ.h"
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#include "SystemZSubtarget.h"
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#include "llvm/Target/TargetFrameLowering.h"
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#include "llvm/ADT/IndexedMap.h"
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namespace llvm {
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class SystemZSubtarget;
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class SystemZFrameLowering : public TargetFrameLowering {
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IndexedMap<unsigned> RegSpillOffsets;
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protected:
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const SystemZSubtarget &STI;
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public:
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explicit SystemZFrameLowering(const SystemZSubtarget &sti);
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/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
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/// the function.
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void emitPrologue(MachineFunction &MF) const;
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
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bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI,
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const TargetRegisterInfo *TRI) const;
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bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI,
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const TargetRegisterInfo *TRI) const;
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void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
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RegScavenger *RS) const;
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bool hasReservedCallFrame(const MachineFunction &MF) const { return true; }
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bool hasFP(const MachineFunction &MF) const;
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int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
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};
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} // End llvm namespace
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#endif
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