#include <Mips16FrameLowering.h>

Inheritance diagram for llvm::Mips16FrameLowering:

Collaboration diagram for llvm::Mips16FrameLowering:

Public Member Functions
	Mips16FrameLowering (const MipsSubtarget &STI)

void	emitPrologue (MachineFunction &MF) const

void	emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const

void	eliminateCallFramePseudoInstr (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const

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

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

bool	hasReservedCallFrame (const MachineFunction &MF) const

void	processFunctionBeforeCalleeSavedScan (MachineFunction &MF, RegScavenger *RS) const

Public Member Functions inherited from llvm::MipsFrameLowering
	MipsFrameLowering (const MipsSubtarget &sti, unsigned Alignment)

bool	hasFP (const MachineFunction &MF) const

Public Member Functions inherited from llvm::TargetFrameLowering
	TargetFrameLowering (StackDirection D, unsigned StackAl, int LAO, unsigned TransAl=1, bool StackReal=true)

virtual	~TargetFrameLowering ()

StackDirection	getStackGrowthDirection () const

unsigned	getStackAlignment () const

unsigned	getTransientStackAlignment () const

bool	isStackRealignable () const

int	getOffsetOfLocalArea () const

virtual bool	isFPCloseToIncomingSP () const

virtual const SpillSlot *	getCalleeSavedSpillSlots (unsigned &NumEntries) const

virtual bool	targetHandlesStackFrameRounding () const

virtual void	adjustForSegmentedStacks (MachineFunction &MF) const

virtual void	adjustForHiPEPrologue (MachineFunction &MF) const

virtual bool	canSimplifyCallFramePseudos (const MachineFunction &MF) const

virtual int	getFrameIndexOffset (const MachineFunction &MF, int FI) const

virtual int	getFrameIndexReference (const MachineFunction &MF, int FI, unsigned &FrameReg) const

virtual void	processFunctionBeforeFrameFinalized (MachineFunction &MF, RegScavenger *RS=NULL) const

Additional Inherited Members
Public Types inherited from llvm::TargetFrameLowering
enum	StackDirection { StackGrowsUp, StackGrowsDown }

Static Public Member Functions inherited from llvm::MipsFrameLowering
static const MipsFrameLowering *	create (MipsTargetMachine &TM, const MipsSubtarget &ST)

Protected Member Functions inherited from llvm::MipsFrameLowering
uint64_t	estimateStackSize (const MachineFunction &MF) const

Protected Attributes inherited from llvm::MipsFrameLowering
const MipsSubtarget &	STI

Detailed Description

Definition at line 20 of file Mips16FrameLowering.h.

Constructor & Destructor Documentation

llvm::Mips16FrameLowering::Mips16FrameLowering ( const MipsSubtarget & STI )

inlineexplicit

Definition at line 22 of file Mips16FrameLowering.h.

Member Function Documentation

void Mips16FrameLowering::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 143 of file Mips16FrameLowering.cpp.

References llvm::Mips16InstrInfo::adjustStackPtr(), llvm::MachineBasicBlock::erase(), llvm::TargetMachine::getInstrInfo(), llvm::MachineFunction::getTarget(), hasReservedCallFrame(), and TII.

void Mips16FrameLowering::emitEpilogue	(	MachineFunction &	MF,
		MachineBasicBlock &	MBB
	)		const

virtual

Implements llvm::TargetFrameLowering.

Definition at line 77 of file Mips16FrameLowering.cpp.

References llvm::BuildMI(), llvm::MachineFunction::getFrameInfo(), llvm::TargetMachine::getInstrInfo(), llvm::MachineBasicBlock::getLastNonDebugInstr(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), llvm::MipsFrameLowering::hasFP(), llvm::Mips16InstrInfo::restoreFrame(), and TII.

void Mips16FrameLowering::emitPrologue ( MachineFunction & MF ) const

virtual

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

Implements llvm::TargetFrameLowering.

Definition at line 30 of file Mips16FrameLowering.cpp.

References llvm::MachineModuleInfo::addFrameInst(), llvm::MachineFrameInfo::adjustsStack(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::MCCFIInstruction::createDefCfaOffset(), llvm::MCCFIInstruction::createOffset(), llvm::MCContext::CreateTempSymbol(), llvm::MachineBasicBlock::end(), llvm::MachineFunction::front(), llvm::MachineModuleInfo::getContext(), llvm::MCRegisterInfo::getDwarfRegNum(), llvm::MachineFunction::getFrameInfo(), llvm::TargetMachine::getInstrInfo(), llvm::MachineFunction::getMMI(), llvm::MCContext::getRegisterInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), llvm::MipsFrameLowering::hasFP(), llvm::Mips16InstrInfo::makeFrame(), MRI, llvm::TargetOpcode::PROLOG_LABEL, and TII.

bool Mips16FrameLowering::hasReservedCallFrame ( const MachineFunction & MF ) const

virtual

hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required, we reserve argument space for call sites in the function immediately on entry to the current function. This eliminates the need for add/sub sp brackets around call sites. Returns true if the call frame is included as part of the stack frame.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 161 of file Mips16FrameLowering.cpp.

References llvm::MachineFunction::getFrameInfo(), llvm::MachineFrameInfo::getMaxCallFrameSize(), and llvm::MachineFrameInfo::hasVarSizedObjects().

Referenced by eliminateCallFramePseudoInstr().

void Mips16FrameLowering::processFunctionBeforeCalleeSavedScan	(	MachineFunction &	MF,
		RegScavenger *	RS
	)		const

virtual

processFunctionBeforeCalleeSavedScan - This method is called immediately before PrologEpilogInserter scans the physical registers used to determine what callee saved registers should be spilled. This method is optional.

Reimplemented from llvm::TargetFrameLowering.

Definition at line 169 of file Mips16FrameLowering.cpp.

References llvm::MachineFunction::getRegInfo(), and llvm::MachineRegisterInfo::setPhysRegUsed().

bool Mips16FrameLowering::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 127 of file Mips16FrameLowering.cpp.

bool Mips16FrameLowering::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 99 of file Mips16FrameLowering.cpp.

References llvm::MachineBasicBlock::addLiveIn(), llvm::MachineFunction::begin(), llvm::MachineFunction::getFrameInfo(), llvm::MachineBasicBlock::getParent(), and llvm::MachineFrameInfo::isReturnAddressTaken().

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation