#include <HexagonFrameLowering.h>

Inheritance diagram for llvm::HexagonFrameLowering:

Collaboration diagram for llvm::HexagonFrameLowering:

Public Member Functions
	HexagonFrameLowering (const HexagonSubtarget &sti)
void	emitPrologue (MachineFunction &MF) const
void	emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const
virtual bool	spillCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const std::vector< CalleeSavedInfo > &CSI, const TargetRegisterInfo *TRI) const
void	eliminateCallFramePseudoInstr (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const
virtual bool	restoreCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const std::vector< CalleeSavedInfo > &CSI, const TargetRegisterInfo *TRI) const
int	getFrameIndexOffset (const MachineFunction &MF, int FI) const
bool	hasFP (const MachineFunction &MF) const
bool	hasTailCall (MachineBasicBlock &MBB) const

Detailed Description

Definition at line 19 of file HexagonFrameLowering.h.

Constructor & Destructor Documentation

llvm::HexagonFrameLowering::HexagonFrameLowering ( const HexagonSubtarget & sti ) [inline, explicit]

Definition at line 25 of file HexagonFrameLowering.h.

Member Function Documentation

void HexagonFrameLowering::eliminateCallFramePseudoInstr	(	MachineFunction &	MF,
		MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	MI
	)		const `[virtual]`

eliminateCallFramePseudoInstr - This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy pseudo instructions (but only if the Target is using them). It is responsible for eliminating these instructions, replacing them with concrete instructions. This method need only be implemented if using call frame setup/destroy pseudo instructions.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 329 of file HexagonFrameLowering.cpp.

References llvm::MachineBasicBlock::erase(), llvm::MachineInstr::getOpcode(), I, llvm_unreachable, and llvm::A64CC::MI.

void HexagonFrameLowering::emitEpilogue	(	MachineFunction &	MF,
		MachineBasicBlock &	MBB
	)		const `[virtual]`

void HexagonFrameLowering::emitPrologue ( MachineFunction & MF ) const [virtual]

emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.

Implements llvm::TargetFrameLowering.

Definition at line 76 of file HexagonFrameLowering.cpp.

References llvm::HexagonISD::ADJDYNALLOC, llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::HexagonISD::CONST32_Int_Real, llvm::MachineBasicBlock::end(), llvm::MachineFunction::front(), llvm::MCInstrInfo::get(), llvm::HexagonMachineFunctionInfo::getAllocaAdjustInsts(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::TargetMachine::getInstrInfo(), llvm::MachineFrameInfo::getMaxCallFrameSize(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::TargetMachine::getRegisterInfo(), llvm::HexagonRegisterInfo::getStackRegister(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), hasFP(), HEXAGON_RESERVED_REG_1, llvm::MachineOperand::isImm(), llvm::A64CC::MI, llvm::MachineOperand::setImm(), and TII.

int HexagonFrameLowering::getFrameIndexOffset	(	const MachineFunction &	MF,
		int	FI
	)		const `[virtual]`

getFrameIndexOffset - Returns the displacement from the frame register to the stack frame of the specified index.

getFrameIndexOffset - Returns the displacement from the frame register to the stack frame of the specified index. This is the default implementation which is overridden for some targets.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 343 of file HexagonFrameLowering.cpp.

References llvm::MachineFunction::getFrameInfo(), and llvm::MachineFrameInfo::getObjectOffset().

bool HexagonFrameLowering::hasFP ( const MachineFunction & MF ) const [virtual]

hasFP - Return true if the specified function should have a dedicated frame pointer register. For most targets this is true only if the function has variable sized allocas or if frame pointer elimination is disabled.

Implements llvm::TargetFrameLowering.

Definition at line 203 of file HexagonFrameLowering.cpp.

References llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFrameInfo::hasCalls(), and llvm::HexagonMachineFunctionInfo::hasClobberLR().

Referenced by emitEpilogue(), and emitPrologue().

bool HexagonFrameLowering::hasTailCall ( MachineBasicBlock & MBB ) const

Definition at line 138 of file HexagonFrameLowering.cpp.

References llvm::MachineBasicBlock::getLastNonDebugInstr().

bool HexagonFrameLowering::restoreCalleeSavedRegisters	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	MI,
		const std::vector< CalleeSavedInfo > &	CSI,
		const TargetRegisterInfo *	TRI
	)		const `[virtual]`

restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of load instructions via loadRegToStackSlot(). Returns false otherwise.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 276 of file HexagonFrameLowering.cpp.

References llvm::MachineBasicBlock::addLiveIn(), llvm::TargetMachine::getInstrInfo(), llvm::TargetRegisterInfo::getMinimalPhysRegClass(), llvm::MachineBasicBlock::getParent(), getReg(), llvm::MachineFunction::getTarget(), llvm::TargetInstrInfo::loadRegFromStackSlot(), TII, and uniqueSuperReg().

bool HexagonFrameLowering::spillCalleeSavedRegisters	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator	MI,
		const std::vector< CalleeSavedInfo > &	CSI,
		const TargetRegisterInfo *	TRI
	)		const `[virtual]`

spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of store instructions via storeRegToStackSlot(). Returns false otherwise.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 222 of file HexagonFrameLowering.cpp.

References llvm::MachineBasicBlock::addLiveIn(), llvm::TargetMachine::getInstrInfo(), llvm::TargetRegisterInfo::getMinimalPhysRegClass(), llvm::MachineBasicBlock::getParent(), getReg(), llvm::MachineFunction::getTarget(), llvm::TargetInstrInfo::storeRegToStackSlot(), TII, and uniqueSuperReg().

The documentation for this class was generated from the following files:

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation