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9 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
10 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZFRAMELOWERING_H
20 class SystemZSubtarget;
27 static std::unique_ptr<SystemZFrameLowering>
59 std::vector<CalleeSavedInfo> &CSI)
const override;
110 std::vector<CalleeSavedInfo> &CSI)
const override;
This is an optimization pass for GlobalISel generic memory operations.
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS) const override
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
Information about stack frame layout on the target.
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns tru...
void inlineStackProbe(MachineFunction &MF, MachineBasicBlock &PrologMBB) const override
Replace a StackProbe stub (if any) with the actual probe code inline.
void processFunctionBeforeFrameFinalized(MachineFunction &MF, RegScavenger *RS) const override
processFunctionBeforeFrameFinalized - This method is called immediately before the specified function...
static std::unique_ptr< SystemZFrameLowering > create(const SystemZSubtarget &STI)
Reg
All possible values of the reg field in the ModR/M byte.
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
void processFunctionBeforeFrameFinalized(MachineFunction &MF, RegScavenger *RS) const override
processFunctionBeforeFrameFinalized - This method is called immediately before the specified function...
bool hasReservedCallFrame(const MachineFunction &MF) const override
hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required,...
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS) const override
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
bool usePackedStack(MachineFunction &MF) const
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBII, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns...
unsigned const TargetRegisterInfo * TRI
SystemZFrameLowering(StackDirection D, Align StackAl, int LAO, Align TransAl, bool StackReal)
unsigned getBackchainOffset(MachineFunction &MF) const
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
MachineBasicBlock::iterator eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI) const override
This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy p...
This struct is a compact representation of a valid (non-zero power of two) alignment.
void orderFrameObjects(const MachineFunction &MF, SmallVectorImpl< int > &ObjectsToAllocate) const override
Order the symbols in the local stack frame.
bool hasFP(const MachineFunction &MF) const override
hasFP - Return true if the specified function should have a dedicated frame pointer register.
bool allocateScavengingFrameIndexesNearIncomingSP(const MachineFunction &MF) const override
Control the placement of special register scavenging spill slots when allocating a stack frame.
static GCRegistry::Add< StatepointGC > D("statepoint-example", "an example strategy for statepoint")
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
bool assignCalleeSavedSpillSlots(MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI) const override
unsigned getRegSpillOffset(MachineFunction &MF, Register Reg) const
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
MachineBasicBlock MachineBasicBlock::iterator MBBI
StackOffset getFrameIndexReference(const MachineFunction &MF, int FI, Register &FrameReg) const override
getFrameIndexReference - This method should return the base register and offset used to reference a f...
StackOffset holds a fixed and a scalable offset in bytes.
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
Wrapper class representing virtual and physical registers.
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns tru...
bool hasFP(const MachineFunction &MF) const override
hasFP - Return true if the specified function should have a dedicated frame pointer register.
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBII, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns...
bool assignCalleeSavedSpillSlots(MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI) const override
void inlineStackProbe(MachineFunction &MF, MachineBasicBlock &PrologMBB) const override
Replace a StackProbe stub (if any) with the actual probe code inline.
int getOrCreateFramePointerSaveIndex(MachineFunction &MF) const
void determineFrameLayout(MachineFunction &MF) const
SystemZELFFrameLowering()
SystemZXPLINKFrameLowering()
const int64_t ELFCallFrameSize