SystemZFrameLowering.h [plain text]
#ifndef SYSTEMZFRAMELOWERING_H
#define SYSTEMZFRAMELOWERING_H
#include "SystemZSubtarget.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/Target/TargetFrameLowering.h"
namespace llvm {
class SystemZTargetMachine;
class SystemZSubtarget;
class SystemZFrameLowering : public TargetFrameLowering {
IndexedMap<unsigned> RegSpillOffsets;
protected:
const SystemZTargetMachine &TM;
const SystemZSubtarget &STI;
public:
SystemZFrameLowering(const SystemZTargetMachine &tm,
const SystemZSubtarget &sti);
virtual bool isFPCloseToIncomingSP() const LLVM_OVERRIDE { return false; }
virtual const SpillSlot *getCalleeSavedSpillSlots(unsigned &NumEntries) const
LLVM_OVERRIDE;
virtual void
processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
RegScavenger *RS) const LLVM_OVERRIDE;
virtual bool
spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
const std::vector<CalleeSavedInfo> &CSI,
const TargetRegisterInfo *TRI) const
LLVM_OVERRIDE;
virtual bool
restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBII,
const std::vector<CalleeSavedInfo> &CSI,
const TargetRegisterInfo *TRI) const
LLVM_OVERRIDE;
virtual void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS) const;
virtual void emitPrologue(MachineFunction &MF) const LLVM_OVERRIDE;
virtual void emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const LLVM_OVERRIDE;
virtual bool hasFP(const MachineFunction &MF) const LLVM_OVERRIDE;
virtual int getFrameIndexOffset(const MachineFunction &MF,
int FI) const LLVM_OVERRIDE;
virtual bool hasReservedCallFrame(const MachineFunction &MF) const
LLVM_OVERRIDE;
virtual void
eliminateCallFramePseudoInstr(MachineFunction &MF,
MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const
LLVM_OVERRIDE;
uint64_t getAllocatedStackSize(const MachineFunction &MF) const;
unsigned getRegSpillOffset(unsigned Reg) const {
return RegSpillOffsets[Reg];
}
};
}
#endif