#include <MipsSEFrameLowering.h>

Inheritance diagram for llvm::MipsSEFrameLowering:

Collaboration diagram for llvm::MipsSEFrameLowering:

Public Member Functions
	MipsSEFrameLowering (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	hasReservedCallFrame (const MachineFunction &MF) const

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

unsigned	ehDataReg (unsigned I) 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	restoreCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const std::vector< CalleeSavedInfo > &CSI, const TargetRegisterInfo *TRI) 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 21 of file MipsSEFrameLowering.h.

Constructor & Destructor Documentation

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

inlineexplicit

Definition at line 23 of file MipsSEFrameLowering.h.

Member Function Documentation

unsigned MipsSEFrameLowering::ehDataReg ( unsigned I ) const

Definition at line 260 of file MipsSEFrameLowering.cpp.

References I, llvm::MipsSubtarget::isABI_N64(), and llvm::MipsFrameLowering::STI.

Referenced by emitEpilogue(), and emitPrologue().

void MipsSEFrameLowering::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 487 of file MipsSEFrameLowering.cpp.

References llvm::MipsSEInstrInfo::adjustStackPtr(), llvm::MachineBasicBlock::erase(), llvm::TargetMachine::getInstrInfo(), llvm::MachineFunction::getTarget(), hasReservedCallFrame(), llvm::MipsSubtarget::isABI_N64(), and llvm::MipsFrameLowering::STI.

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

virtual

void MipsSEFrameLowering::emitPrologue ( MachineFunction & MF ) const

virtual

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

Implements llvm::TargetFrameLowering.

Definition at line 271 of file MipsSEFrameLowering.cpp.

References llvm::MachineModuleInfo::addFrameInst(), llvm::MachineBasicBlock::addLiveIn(), llvm::MachineInstrBuilder::addReg(), llvm::MachineFrameInfo::adjustsStack(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::MipsFunctionInfo::callsEhReturn(), llvm::MCCFIInstruction::createDefCfaOffset(), llvm::MCCFIInstruction::createDefCfaRegister(), llvm::MCCFIInstruction::createOffset(), llvm::MCContext::CreateTempSymbol(), ehDataReg(), llvm::MachineBasicBlock::end(), llvm::MachineFunction::front(), llvm::DebugLoc::get(), llvm::MachineFrameInfo::getCalleeSavedInfo(), llvm::MachineModuleInfo::getContext(), llvm::MCRegisterInfo::getDwarfRegNum(), llvm::MipsFunctionInfo::getEhDataRegFI(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::TargetMachine::getInstrInfo(), llvm::MachineFunction::getMMI(), llvm::MachineFrameInfo::getObjectOffset(), llvm::TargetMachine::getRegisterInfo(), llvm::MCContext::getRegisterInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), llvm::MipsFrameLowering::hasFP(), I, llvm::MipsSubtarget::isABI_N64(), llvm::MipsSubtarget::isLittle(), llvm::MachineBasicBlock::isLiveIn(), MRI, llvm::TargetOpcode::PROLOG_LABEL, llvm::MipsFrameLowering::STI, and std::swap().

bool MipsSEFrameLowering::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 474 of file MipsSEFrameLowering.cpp.

References llvm::MachineFunction::getFrameInfo(), llvm::MachineFrameInfo::getMaxCallFrameSize(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFrameInfo::hasVarSizedObjects(), and llvm::isInt< 16 >().

Referenced by eliminateCallFramePseudoInstr().

void MipsSEFrameLowering::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 506 of file MipsSEFrameLowering.cpp.

References llvm::RegScavenger::addScavengingFrameIndex(), llvm::MipsFunctionInfo::callsEhReturn(), llvm::MipsFunctionInfo::createEhDataRegsFI(), llvm::MachineFrameInfo::CreateStackObject(), llvm::MipsFrameLowering::estimateStackSize(), llvm::TargetRegisterClass::getAlignment(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getRegInfo(), llvm::TargetRegisterClass::getSize(), llvm::MipsFrameLowering::hasFP(), llvm::MipsSubtarget::hasMips64(), llvm::MipsSubtarget::isABI_N64(), llvm::isInt< 16 >(), MRI, llvm::MachineRegisterInfo::setPhysRegUsed(), and llvm::MipsFrameLowering::STI.

bool MipsSEFrameLowering::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 443 of file MipsSEFrameLowering.cpp.

References llvm::MachineBasicBlock::addLiveIn(), llvm::MachineFunction::begin(), llvm::MachineFunction::getFrameInfo(), llvm::TargetMachine::getInstrInfo(), llvm::TargetRegisterInfo::getMinimalPhysRegClass(), llvm::MachineBasicBlock::getParent(), llvm::MachineFunction::getTarget(), llvm::MachineFrameInfo::isReturnAddressTaken(), and llvm::TargetInstrInfo::storeRegToStackSlot().

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