llvm::MachineFrameInfo Class Reference

The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted. More...

#include "llvm/CodeGen/MachineFrameInfo.h"

Public Types
enum	SSPLayoutKind { SSPLK_None , SSPLK_LargeArray , SSPLK_SmallArray , SSPLK_AddrOf }
	Stack Smashing Protection (SSP) rules require that vulnerable stack allocations are located close the stack protector. More...

Public Member Functions
	MachineFrameInfo (Align StackAlignment, bool StackRealignable, bool ForcedRealign)
	MachineFrameInfo (const MachineFrameInfo &)=delete
bool	isStackRealignable () const
bool	hasStackObjects () const
	Return true if there are any stack objects in this function.
bool	hasVarSizedObjects () const
	This method may be called any time after instruction selection is complete to determine if the stack frame for this function contains any variable sized objects.
int	getStackProtectorIndex () const
	Return the index for the stack protector object.
void	setStackProtectorIndex (int I)
bool	hasStackProtectorIndex () const
int	getFunctionContextIndex () const
	Return the index for the function context object.
void	setFunctionContextIndex (int I)
bool	hasFunctionContextIndex () const
bool	isFrameAddressTaken () const
	This method may be called any time after instruction selection is complete to determine if there is a call to @llvm.frameaddress in this function.
void	setFrameAddressIsTaken (bool T)
bool	isReturnAddressTaken () const
	This method may be called any time after instruction selection is complete to determine if there is a call to @llvm.returnaddress in this function.
void	setReturnAddressIsTaken (bool s)
bool	hasStackMap () const
	This method may be called any time after instruction selection is complete to determine if there is a call to builtin @llvm.experimental.stackmap.
void	setHasStackMap (bool s=true)
bool	hasPatchPoint () const
	This method may be called any time after instruction selection is complete to determine if there is a call to builtin @llvm.experimental.patchpoint.
void	setHasPatchPoint (bool s=true)
bool	needsSplitStackProlog () const
	Return true if this function requires a split stack prolog, even if it uses no stack space.
int	getObjectIndexBegin () const
	Return the minimum frame object index.
int	getObjectIndexEnd () const
	Return one past the maximum frame object index.
unsigned	getNumFixedObjects () const
	Return the number of fixed objects.
unsigned	getNumObjects () const
	Return the number of objects.
void	mapLocalFrameObject (int ObjectIndex, int64_t Offset)
	Map a frame index into the local object block.
std::pair< int, int64_t >	getLocalFrameObjectMap (int i) const
	Get the local offset mapping for a for an object.
int64_t	getLocalFrameObjectCount () const
	Return the number of objects allocated into the local object block.
void	setLocalFrameSize (int64_t sz)
	Set the size of the local object blob.
int64_t	getLocalFrameSize () const
	Get the size of the local object blob.
void	setLocalFrameMaxAlign (Align Alignment)
	Required alignment of the local object blob, which is the strictest alignment of any object in it.
Align	getLocalFrameMaxAlign () const
	Return the required alignment of the local object blob.
bool	getUseLocalStackAllocationBlock () const
	Get whether the local allocation blob should be allocated together or let PEI allocate the locals in it directly.
void	setUseLocalStackAllocationBlock (bool v)
	setUseLocalStackAllocationBlock - Set whether the local allocation blob should be allocated together or let PEI allocate the locals in it directly.
bool	isObjectPreAllocated (int ObjectIdx) const
	Return true if the object was pre-allocated into the local block.
int64_t	getObjectSize (int ObjectIdx) const
	Return the size of the specified object.
void	setObjectSize (int ObjectIdx, int64_t Size)
	Change the size of the specified stack object.
Align	getObjectAlign (int ObjectIdx) const
	Return the alignment of the specified stack object.
bool	contributesToMaxAlignment (uint8_t StackID)
	Should this stack ID be considered in MaxAlignment.
void	setObjectAlignment (int ObjectIdx, Align Alignment)
	setObjectAlignment - Change the alignment of the specified stack object.
const AllocaInst *	getObjectAllocation (int ObjectIdx) const
	Return the underlying Alloca of the specified stack object if it exists.
void	clearObjectAllocation (int ObjectIdx)
	Remove the underlying Alloca of the specified stack object if it exists.
int64_t	getObjectOffset (int ObjectIdx) const
	Return the assigned stack offset of the specified object from the incoming stack pointer.
bool	isObjectZExt (int ObjectIdx) const
void	setObjectZExt (int ObjectIdx, bool IsZExt)
bool	isObjectSExt (int ObjectIdx) const
void	setObjectSExt (int ObjectIdx, bool IsSExt)
void	setObjectOffset (int ObjectIdx, int64_t SPOffset)
	Set the stack frame offset of the specified object.
SSPLayoutKind	getObjectSSPLayout (int ObjectIdx) const
void	setObjectSSPLayout (int ObjectIdx, SSPLayoutKind Kind)
uint64_t	getStackSize () const
	Return the number of bytes that must be allocated to hold all of the fixed size frame objects.
void	setStackSize (uint64_t Size)
	Set the size of the stack.
uint64_t	estimateStackSize (const MachineFunction &MF) const
	Estimate and return the size of the stack frame.
int64_t	getOffsetAdjustment () const
	Return the correction for frame offsets.
void	setOffsetAdjustment (int64_t Adj)
	Set the correction for frame offsets.
Align	getMaxAlign () const
	Return the alignment in bytes that this function must be aligned to, which is greater than the default stack alignment provided by the target.
void	ensureMaxAlignment (Align Alignment)
	Make sure the function is at least Align bytes aligned.
bool	shouldRealignStack () const
	Return true if stack realignment is forced by function attributes or if the stack alignment.
bool	adjustsStack () const
	Return true if this function adjusts the stack – e.g., when calling another function.
void	setAdjustsStack (bool V)
bool	hasCalls () const
	Return true if the current function has any function calls.
void	setHasCalls (bool V)
bool	hasOpaqueSPAdjustment () const
	Returns true if the function contains opaque dynamic stack adjustments.
void	setHasOpaqueSPAdjustment (bool B)
bool	hasCopyImplyingStackAdjustment () const
	Returns true if the function contains operations which will lower down to instructions which manipulate the stack pointer.
void	setHasCopyImplyingStackAdjustment (bool B)
bool	hasVAStart () const
	Returns true if the function calls the llvm.va_start intrinsic.
void	setHasVAStart (bool B)
bool	hasMustTailInVarArgFunc () const
	Returns true if the function is variadic and contains a musttail call.
void	setHasMustTailInVarArgFunc (bool B)
bool	hasTailCall () const
	Returns true if the function contains a tail call.
void	setHasTailCall (bool V=true)
void	computeMaxCallFrameSize (MachineFunction &MF, std::vector< MachineBasicBlock::iterator > *FrameSDOps=nullptr)
	Computes the maximum size of a callframe.
uint64_t	getMaxCallFrameSize () const
	Return the maximum size of a call frame that must be allocated for an outgoing function call.
bool	isMaxCallFrameSizeComputed () const
void	setMaxCallFrameSize (uint64_t S)
unsigned	getCVBytesOfCalleeSavedRegisters () const
	Returns how many bytes of callee-saved registers the target pushed in the prologue.
void	setCVBytesOfCalleeSavedRegisters (unsigned S)
int	CreateFixedObject (uint64_t Size, int64_t SPOffset, bool IsImmutable, bool isAliased=false)
	Create a new object at a fixed location on the stack.
int	CreateFixedSpillStackObject (uint64_t Size, int64_t SPOffset, bool IsImmutable=false)
	Create a spill slot at a fixed location on the stack.
bool	isFixedObjectIndex (int ObjectIdx) const
	Returns true if the specified index corresponds to a fixed stack object.
bool	isAliasedObjectIndex (int ObjectIdx) const
	Returns true if the specified index corresponds to an object that might be pointed to by an LLVM IR value.
void	setIsAliasedObjectIndex (int ObjectIdx, bool IsAliased)
	Set "maybe pointed to by an LLVM IR value" for an object.
bool	isImmutableObjectIndex (int ObjectIdx) const
	Returns true if the specified index corresponds to an immutable object.
void	setIsImmutableObjectIndex (int ObjectIdx, bool IsImmutable)
	Marks the immutability of an object.
bool	isSpillSlotObjectIndex (int ObjectIdx) const
	Returns true if the specified index corresponds to a spill slot.
bool	isStatepointSpillSlotObjectIndex (int ObjectIdx) const
uint8_t	getStackID (int ObjectIdx) const
void	setStackID (int ObjectIdx, uint8_t ID)
bool	isDeadObjectIndex (int ObjectIdx) const
	Returns true if the specified index corresponds to a dead object.
bool	isVariableSizedObjectIndex (int ObjectIdx) const
	Returns true if the specified index corresponds to a variable sized object.
void	markAsStatepointSpillSlotObjectIndex (int ObjectIdx)
int	CreateStackObject (uint64_t Size, Align Alignment, bool isSpillSlot, const AllocaInst *Alloca=nullptr, uint8_t ID=0)
	Create a new statically sized stack object, returning a nonnegative identifier to represent it.
int	CreateSpillStackObject (uint64_t Size, Align Alignment)
	Create a new statically sized stack object that represents a spill slot, returning a nonnegative identifier to represent it.
void	RemoveStackObject (int ObjectIdx)
	Remove or mark dead a statically sized stack object.
int	CreateVariableSizedObject (Align Alignment, const AllocaInst *Alloca)
	Notify the MachineFrameInfo object that a variable sized object has been created.
const std::vector< CalleeSavedInfo > &	getCalleeSavedInfo () const
	Returns a reference to call saved info vector for the current function.
std::vector< CalleeSavedInfo > &	getCalleeSavedInfo ()
void	setCalleeSavedInfo (std::vector< CalleeSavedInfo > CSI)
	Used by prolog/epilog inserter to set the function's callee saved information.
bool	isCalleeSavedInfoValid () const
	Has the callee saved info been calculated yet?
void	setCalleeSavedInfoValid (bool v)
MachineBasicBlock *	getSavePoint () const
void	setSavePoint (MachineBasicBlock *NewSave)
MachineBasicBlock *	getRestorePoint () const
void	setRestorePoint (MachineBasicBlock *NewRestore)
uint64_t	getUnsafeStackSize () const
void	setUnsafeStackSize (uint64_t Size)
BitVector	getPristineRegs (const MachineFunction &MF) const
	Return a set of physical registers that are pristine.
void	print (const MachineFunction &MF, raw_ostream &OS) const
	Used by the MachineFunction printer to print information about stack objects.
void	dump (const MachineFunction &MF) const
	dump - Print the function to stderr.

Detailed Description

The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted.

This class is key to allowing stack frame representation optimizations, such as frame pointer elimination. It also allows more mundane (but still important) optimizations, such as reordering of abstract objects on the stack frame.

To support this, the class assigns unique integer identifiers to stack objects requested clients. These identifiers are negative integers for fixed stack objects (such as arguments passed on the stack) or nonnegative for objects that may be reordered. Instructions which refer to stack objects use a special MO_FrameIndex operand to represent these frame indexes.

Because this class keeps track of all references to the stack frame, it knows when a variable sized object is allocated on the stack. This is the sole condition which prevents frame pointer elimination, which is an important optimization on register-poor architectures. Because original variable sized alloca's in the source program are the only source of variable sized stack objects, it is safe to decide whether there will be any variable sized objects before all stack objects are known (for example, register allocator spill code never needs variable sized objects).

When prolog/epilog code emission is performed, the final stack frame is built and the machine instructions are modified to refer to the actual stack offsets of the object, eliminating all MO_FrameIndex operands from the program.

Abstract Stack Frame Information

Definition at line 106 of file MachineFrameInfo.h.

Member Enumeration Documentation

SSPLayoutKind

enum llvm::MachineFrameInfo::SSPLayoutKind

Stack Smashing Protection (SSP) rules require that vulnerable stack allocations are located close the stack protector.

Enumerator
SSPLK_None	Did not trigger a stack protector. No effect on data layout.
SSPLK_LargeArray	Array or nested array >= SSP-buffer-size. Closest to the stack protector.
SSPLK_SmallArray	Array or nested array < SSP-buffer-size. 2nd closest to the stack protector.
SSPLK_AddrOf	The address of this allocation is exposed and triggered protection. 3rd closest to the protector.

Definition at line 110 of file MachineFrameInfo.h.

Constructor & Destructor Documentation

MachineFrameInfo() [1/2]

llvm::MachineFrameInfo::MachineFrameInfo ( Align  StackAlignment, bool  StackRealignable, bool  ForcedRealign  )

inlineexplicit

Definition at line 342 of file MachineFrameInfo.h.

MachineFrameInfo() [2/2]

llvm::MachineFrameInfo::MachineFrameInfo ( const MachineFrameInfo &  )

delete

Member Function Documentation

adjustsStack()

bool llvm::MachineFrameInfo::adjustsStack ( ) const

inline

Return true if this function adjusts the stack – e.g., when calling another function.

This is only valid during and after prolog/epilog code insertion.

Definition at line 617 of file MachineFrameInfo.h.

Referenced by llvm::AArch64RegisterInfo::cannotEliminateFrame(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), llvm::MIRPrinter::convert(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::XtensaFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), estimateStackSize(), llvm::VEInstrInfo::expandGetStackTopPseudo(), and isXPLeafCandidate().

clearObjectAllocation()

void llvm::MachineFrameInfo::clearObjectAllocation ( int  ObjectIdx )

inline

Remove the underlying Alloca of the specified stack object if it exists.

This generally should not be used and is for reduction tooling.

Definition at line 520 of file MachineFrameInfo.h.

References assert().

computeMaxCallFrameSize()

void MachineFrameInfo::computeMaxCallFrameSize	(	MachineFunction &	MF,
		std::vector< MachineBasicBlock::iterator > *	FrameSDOps = nullptr
	)

Computes the maximum size of a callframe.

This only works for targets defining TargetInstrInfo::getCallFrameSetupOpcode(), getCallFrameDestroyOpcode(), and getFrameSize(). This is usually computed by the prologue epilogue inserter but some targets may call this to compute it earlier. If FrameSDOps is passed, the frame instructions in the MF will be inserted into it.

Definition at line 187 of file MachineFrameInfo.cpp.

References assert(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineFunction::getSubtarget(), MBB, MI, Size, and TII.

Referenced by llvm::ARMTargetLowering::finalizeLowering(), and llvm::AArch64Subtarget::mirFileLoaded().

contributesToMaxAlignment()

bool llvm::MachineFrameInfo::contributesToMaxAlignment ( uint8_t  StackID )

inline

Should this stack ID be considered in MaxAlignment.

Definition at line 493 of file MachineFrameInfo.h.

References llvm::TargetStackID::Default, and llvm::TargetStackID::ScalableVector.

Referenced by CreateStackObject(), and setObjectAlignment().

CreateFixedObject()

int MachineFrameInfo::CreateFixedObject	(	uint64_t	Size,
		int64_t	SPOffset,
		bool	IsImmutable,
		bool	isAliased = false
	)

Create a new object at a fixed location on the stack.

All fixed objects should be created before other objects are created for efficiency. By default, fixed objects are not pointed to by LLVM IR values. This returns an index with a negative value.

Definition at line 83 of file MachineFrameInfo.cpp.

References assert(), clampStackAlignment(), llvm::commonAlignment(), and Size.

Referenced by llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), CalculateTailCallArgDest(), llvm::XCoreFunctionInfo::createLRSpillSlot(), llvm::LanaiFrameLowering::determineCalleeSaves(), llvm::M68kFrameLowering::determineCalleeSaves(), llvm::PPCFrameLowering::determineCalleeSaves(), EmitTailCallStoreFPAndRetAddr(), EmitTailCallStoreRetAddr(), getOrCreateFixedStackObject(), llvm::SystemZELFFrameLowering::getOrCreateFramePointerSaveIndex(), llvm::SystemZXPLINKFrameLowering::getOrCreateFramePointerSaveIndex(), llvm::MSP430TargetLowering::getReturnAddressFrameIndex(), llvm::X86TargetLowering::getReturnAddressFrameIndex(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::SITargetLowering::LowerCall(), llvm::AArch64CallLowering::lowerFormalArguments(), llvm::MipsCallLowering::lowerFormalArguments(), llvm::HexagonTargetLowering::LowerFormalArguments(), llvm::LoongArchTargetLowering::LowerFormalArguments(), llvm::RISCVTargetLowering::LowerFormalArguments(), llvm::SystemZTargetLowering::LowerFormalArguments(), llvm::VETargetLowering::LowerFormalArguments(), llvm::XtensaTargetLowering::LowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_32(), llvm::SparcTargetLowering::LowerFormalArguments_64(), llvm::AArch64FrameLowering::processFunctionBeforeFrameFinalized(), llvm::MSP430FrameLowering::processFunctionBeforeFrameFinalized(), llvm::FunctionLoweringInfo::set(), unpack64(), unpackF64OnRV32DSoftABI(), and unpackFromMemLoc().

CreateFixedSpillStackObject()

int MachineFrameInfo::CreateFixedSpillStackObject	(	uint64_t	Size,
		int64_t	SPOffset,
		bool	IsImmutable = false
	)

Create a spill slot at a fixed location on the stack.

Returns an index with a negative value.

Definition at line 102 of file MachineFrameInfo.cpp.

References clampStackAlignment(), llvm::commonAlignment(), and Size.

Referenced by llvm::ARCFrameLowering::assignCalleeSavedSpillSlots(), assignCalleeSavedSpillSlots(), llvm::HexagonFrameLowering::assignCalleeSavedSpillSlots(), llvm::M68kFrameLowering::assignCalleeSavedSpillSlots(), llvm::SystemZXPLINKFrameLowering::assignCalleeSavedSpillSlots(), llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), llvm::RISCVFrameLowering::assignCalleeSavedSpillSlots(), and llvm::MIRParserImpl::initializeFrameInfo().

CreateSpillStackObject()

int MachineFrameInfo::CreateSpillStackObject	(	uint64_t	Size,
		Align	Alignment
	)

Create a new statically sized stack object that represents a spill slot, returning a nonnegative identifier to represent it.

Definition at line 66 of file MachineFrameInfo.cpp.

References clampStackAlignment(), CreateStackObject(), ensureMaxAlignment(), and Size.

Referenced by llvm::SIMachineFunctionInfo::allocateWWMSpill(), llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), and llvm::HexagonFrameLowering::determineCalleeSaves().

CreateStackObject()

int MachineFrameInfo::CreateStackObject	(	uint64_t	Size,
		Align	Alignment,
		bool	isSpillSlot,
		const AllocaInst *	Alloca = nullptr,
		uint8_t	ID = 0
	)

Create a new statically sized stack object, returning a nonnegative identifier to represent it.

Definition at line 51 of file MachineFrameInfo.cpp.

References assert(), clampStackAlignment(), contributesToMaxAlignment(), ensureMaxAlignment(), and Size.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), assignCalleeSavedSpillSlots(), llvm::SystemZXPLINKFrameLowering::assignCalleeSavedSpillSlots(), llvm::AArch64FrameLowering::assignCalleeSavedSpillSlots(), llvm::RISCVFrameLowering::assignCalleeSavedSpillSlots(), llvm::X86TargetLowering::BuildFILD(), llvm::MipsFunctionInfo::createEhDataRegsFI(), llvm::XCoreFunctionInfo::createEHSpillSlot(), llvm::XCoreFunctionInfo::createFPSpillSlot(), llvm::MipsFunctionInfo::createISRRegFI(), llvm::XCoreFunctionInfo::createLRSpillSlot(), CreateSpillStackObject(), llvm::SelectionDAG::CreateStackTemporary(), llvm::LegalizerHelper::createStackTemporary(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::CSKYFrameLowering::determineCalleeSaves(), llvm::MipsSEFrameLowering::determineCalleeSaves(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::X86TargetLowering::EmitInstrWithCustomInserter(), getAddressForMemoryInput(), llvm::RISCVMachineFunctionInfo::getMoveF64FrameIndex(), llvm::MipsFunctionInfo::getMoveF64ViaSpillFI(), llvm::SIMachineFunctionInfo::getScavengeFI(), llvm::CallLowering::handleAssignments(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::CallLowering::insertSRetOutgoingArgument(), llvm::LoongArchTargetLowering::LowerCall(), llvm::RISCVTargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerCall_32(), llvm::TargetLowering::LowerCallTo(), llvm::SparcTargetLowering::LowerF128_LibCallArg(), llvm::SparcTargetLowering::LowerF128Op(), LowerINTRINSIC_W_CHAIN(), llvm::ARCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::XtensaFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SIFrameLowering::processFunctionBeforeFrameFinalized(), llvm::XCoreFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::FunctionLoweringInfo::set().

CreateVariableSizedObject()

int MachineFrameInfo::CreateVariableSizedObject	(	Align	Alignment,
		const AllocaInst *	Alloca
	)

Notify the MachineFrameInfo object that a variable sized object has been created.

This must be created whenever a variable sized object is created, whether or not the index returned is actually used.

Definition at line 74 of file MachineFrameInfo.cpp.

References clampStackAlignment(), and ensureMaxAlignment().

Referenced by llvm::AArch64TargetLowering::EmitAllocateZABuffer(), llvm::MIRParserImpl::initializeFrameInfo(), and llvm::FunctionLoweringInfo::set().

dump()

LLVM_DUMP_METHOD void MachineFrameInfo::dump

(

const MachineFunction &

MF

)

const

dump - Print the function to stderr.

Definition at line 250 of file MachineFrameInfo.cpp.

References llvm::dbgs(), and print().

ensureMaxAlignment()

void MachineFrameInfo::ensureMaxAlignment

(

Align

Alignment

)

Make sure the function is at least Align bytes aligned.

Definition at line 31 of file MachineFrameInfo.cpp.

References assert().

Referenced by llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), CreateSpillStackObject(), CreateStackObject(), CreateVariableSizedObject(), llvm::CCState::ensureMaxAlignment(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::HexagonTargetLowering::LowerCall(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::X86FrameLowering::processFunctionBeforeFrameFinalized(), and setObjectAlignment().

estimateStackSize()

uint64_t MachineFrameInfo::estimateStackSize

(

const MachineFunction &

MF

)

const

Estimate and return the size of the stack frame.

Definition at line 137 of file MachineFrameInfo.cpp.

References adjustsStack(), llvm::alignTo(), llvm::TargetStackID::Default, llvm::TargetSubtargetInfo::getFrameLowering(), getMaxAlign(), getMaxCallFrameSize(), getObjectAlign(), getObjectIndexBegin(), getObjectIndexEnd(), getObjectOffset(), getObjectSize(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::TargetFrameLowering::getStackAlign(), getStackID(), llvm::MachineFunction::getSubtarget(), llvm::TargetFrameLowering::getTransientStackAlign(), llvm::TargetFrameLowering::hasReservedCallFrame(), llvm::TargetRegisterInfo::hasStackRealignment(), hasVarSizedObjects(), isDeadObjectIndex(), and llvm::Offset.

Referenced by llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::CSKYFrameLowering::determineCalleeSaves(), llvm::XCoreFrameLowering::determineCalleeSaves(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::MipsFrameLowering::estimateStackSize(), llvm::XCoreFunctionInfo::isLargeFrame(), isXPLeafCandidate(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::XtensaFrameLowering::processFunctionBeforeFrameFinalized().

getCalleeSavedInfo() [1/2]

std::vector< CalleeSavedInfo > & llvm::MachineFrameInfo::getCalleeSavedInfo ( )

inline

Definition at line 810 of file MachineFrameInfo.h.

getCalleeSavedInfo() [2/2]

const std::vector< CalleeSavedInfo > & llvm::MachineFrameInfo::getCalleeSavedInfo ( ) const

inline

Returns a reference to call saved info vector for the current function.

Definition at line 806 of file MachineFrameInfo.h.

Referenced by addCalleeSavedRegs(), llvm::LivePhysRegs::addLiveOutsNoPristines(), llvm::MIRPrinter::convertStackObjects(), llvm::XtensaRegisterInfo::eliminateFrameIndex(), llvm::MSP430FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), emitCalleeSavedRestores(), llvm::ARCFrameLowering::emitEpilogue(), llvm::Thumb1FrameLowering::emitEpilogue(), llvm::LoongArchFrameLowering::emitEpilogue(), llvm::MipsSEFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::RISCVFrameLowering::emitEpilogue(), llvm::XtensaFrameLowering::emitEpilogue(), llvm::SystemZAsmPrinter::emitFunctionEntryLabel(), llvm::XtensaFrameLowering::emitPrologue(), llvm::ARCFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::HexagonFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), emitSCSEpilogue(), emitSCSPrologue(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), llvm::TargetFrameLowering::getCalleeSaves(), llvm::LoongArchFrameLowering::getFirstSPAdjustAmount(), llvm::RISCVFrameLowering::getFirstSPAdjustAmount(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), getPristineRegs(), llvm::ARMSubtarget::getPushPopSplitVariation(), getSVECalleeSaveSlotRange(), llvm::Mips16InstrInfo::makeFrame(), llvm::MipsAsmPrinter::printSavedRegsBitmask(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::recomputeLivenessFlags(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), llvm::AArch64FrameLowering::resetCFIToInitialState(), llvm::Mips16InstrInfo::restoreFrame(), updateLiveness(), and llvm::ARMFrameLowering::updateLRRestored().

getCVBytesOfCalleeSavedRegisters()

unsigned llvm::MachineFrameInfo::getCVBytesOfCalleeSavedRegisters ( ) const

inline

Returns how many bytes of callee-saved registers the target pushed in the prologue.

Only used for debug info.

Definition at line 680 of file MachineFrameInfo.h.

Referenced by llvm::CodeViewDebug::beginFunctionImpl(), and llvm::MIRPrinter::convert().

getFunctionContextIndex()

int llvm::MachineFrameInfo::getFunctionContextIndex ( ) const

inline

Return the index for the function context object.

This object is used for SjLj exceptions.

Definition at line 366 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convertStackObjects(), and llvm::VETargetLowering::emitSjLjDispatchBlock().

getLocalFrameMaxAlign()

Align llvm::MachineFrameInfo::getLocalFrameMaxAlign ( ) const

inline

Return the required alignment of the local object blob.

Definition at line 449 of file MachineFrameInfo.h.

Referenced by llvm::ARMBaseRegisterInfo::needsFrameBaseReg().

getLocalFrameObjectCount()

int64_t llvm::MachineFrameInfo::getLocalFrameObjectCount ( ) const

inline

Return the number of objects allocated into the local object block.

Definition at line 434 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convertStackObjects().

getLocalFrameObjectMap()

std::pair< int, int64_t > llvm::MachineFrameInfo::getLocalFrameObjectMap ( int  i ) const

inline

Get the local offset mapping for a for an object.

Definition at line 427 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::MIRPrinter::convertStackObjects().

getLocalFrameSize()

int64_t llvm::MachineFrameInfo::getLocalFrameSize ( ) const

inline

Get the size of the local object blob.

Definition at line 440 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), llvm::ARCRegisterInfo::eliminateFrameIndex(), llvm::AArch64RegisterInfo::hasBasePointer(), llvm::ARMBaseRegisterInfo::hasBasePointer(), llvm::AArch64RegisterInfo::needsFrameBaseReg(), llvm::ARMBaseRegisterInfo::needsFrameBaseReg(), and llvm::RISCVRegisterInfo::needsFrameBaseReg().

getMaxAlign()

Align llvm::MachineFrameInfo::getMaxAlign ( ) const

inline

Return the alignment in bytes that this function must be aligned to, which is greater than the default stack alignment provided by the target.

Definition at line 603 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), llvm::MIRPrinter::convert(), llvm::PPCFrameLowering::determineFrameLayout(), emitAlignedDPRCS2Spills(), llvm::SIFrameLowering::emitEpilogue(), llvm::HexagonDAGToDAGISel::emitFunctionEntryCode(), llvm::AArch64FrameLowering::emitPrologue(), llvm::SIFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::RISCVFrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::VEFrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), estimateStackSize(), llvm::PPCFrameLowering::inlineStackProbe(), llvm::PPCRegisterInfo::lowerDynamicAlloc(), llvm::PPCRegisterInfo::prepareDynamicAlloca(), llvm::HexagonFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::HexagonDAGToDAGISel::SelectFrameIndex().

getMaxCallFrameSize()

uint64_t llvm::MachineFrameInfo::getMaxCallFrameSize ( ) const

inline

Return the maximum size of a call frame that must be allocated for an outgoing function call.

This is only available if CallFrameSetup/Destroy pseudo instructions are used by the target, and then only during or after prolog/epilog code insertion.

Definition at line 666 of file MachineFrameInfo.h.

References isMaxCallFrameSizeComputed().

Referenced by llvm::MIRPrinter::convert(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::SparcFrameLowering::emitPrologue(), estimateStackSize(), llvm::VEInstrInfo::expandGetStackTopPseudo(), llvm::X86FrameLowering::getWin64EHFrameIndexRef(), llvm::AArch64FrameLowering::getWinEHFuncletFrameSize(), llvm::RISCVFrameLowering::hasBP(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::ARMFrameLowering::hasReservedCallFrame(), llvm::Thumb1FrameLowering::hasReservedCallFrame(), llvm::Mips16FrameLowering::hasReservedCallFrame(), llvm::MipsSEFrameLowering::hasReservedCallFrame(), llvm::PPCRegisterInfo::lowerDynamicAlloc(), llvm::PPCRegisterInfo::lowerDynamicAreaOffset(), and llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized().

getNumFixedObjects()

unsigned llvm::MachineFrameInfo::getNumFixedObjects ( ) const

inline

Return the number of fixed objects.

Definition at line 415 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convertStackObjects(), llvm::yaml::FrameIndex::getFI(), llvm::SIRegisterInfo::hasBasePointer(), llvm::HexagonTargetLowering::LowerFormalArguments(), and llvm::AVRFrameAnalyzer::runOnMachineFunction().

getNumObjects()

unsigned llvm::MachineFrameInfo::getNumObjects ( ) const

inline

Return the number of objects.

Definition at line 418 of file MachineFrameInfo.h.

Referenced by llvm::yaml::FrameIndex::getFI(), llvm::R600FrameLowering::getFrameIndexReference(), llvm::R600InstrInfo::getIndirectIndexBegin(), llvm::R600InstrInfo::getIndirectIndexEnd(), llvm::AArch64InstrInfo::getOutliningTypeImpl(), llvm::ARMBaseInstrInfo::getOutliningTypeImpl(), and llvm::AVRFrameAnalyzer::runOnMachineFunction().

getObjectAlign()

Align llvm::MachineFrameInfo::getObjectAlign ( int  ObjectIdx ) const

inline

Return the alignment of the specified stack object.

Definition at line 486 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::addFrameReference(), addFrameReference(), llvm::M68k::addFrameReference(), llvm::M68k::addMemOperand(), AdjustStackOffset(), buildEpilogRestore(), buildPrologSpill(), llvm::SIRegisterInfo::buildSpillLoadStore(), llvm::SIRegisterInfo::buildVGPRSpillLoadStore(), computeCalleeSaveRegisterPairs(), llvm::GISelKnownBits::computeKnownAlignment(), llvm::TargetLowering::computeKnownBitsForFrameIndex(), llvm::MIRPrinter::convertStackObjects(), determineSVEStackObjectOffsets(), llvm::MipsRegisterInfo::eliminateFrameIndex(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::TargetLoweringBase::emitPatchPoint(), estimateStackSize(), llvm::HexagonEvaluator::evaluate(), fixupFuncForFI(), foldInlineAsmMemOperand(), llvm::TargetInstrInfo::foldMemoryOperand(), llvm::X86InstrInfo::foldMemoryOperandImpl(), getFrameIndexMMO(), llvm::R600FrameLowering::getFrameIndexReference(), llvm::M68kFrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), llvm::MipsInstrInfo::GetMemOperand(), getMemsetStores(), llvm::inferAlignFromPtrInfo(), llvm::SelectionDAG::InferPtrAlign(), llvm::SelectionDAGISel::isOrEquivalentToAdd(), llvm::AArch64InstrInfo::loadRegFromStackSlot(), llvm::ARMBaseInstrInfo::loadRegFromStackSlot(), llvm::Thumb1InstrInfo::loadRegFromStackSlot(), llvm::Thumb2InstrInfo::loadRegFromStackSlot(), llvm::HexagonInstrInfo::loadRegFromStackSlot(), llvm::SparcInstrInfo::loadRegFromStackSlot(), llvm::VEInstrInfo::loadRegFromStackSlot(), llvm::LoongArchInstrInfo::loadRegFromStackSlot(), llvm::RISCVInstrInfo::loadRegFromStackSlot(), llvm::MSP430InstrInfo::loadRegFromStackSlot(), llvm::ARCInstrInfo::loadRegFromStackSlot(), llvm::AVRInstrInfo::loadRegFromStackSlot(), llvm::XCoreInstrInfo::loadRegFromStackSlot(), llvm::PPCInstrInfo::loadRegFromStackSlotNoUpd(), llvm::TargetLowering::LowerCallTo(), llvm::HexagonFrameLowering::orderFrameObjects(), llvm::X86FrameLowering::orderFrameObjects(), scavengeStackSlot(), setAlignFlagsForFI(), spillIncomingStatepointValue(), llvm::AArch64InstrInfo::storeRegToStackSlot(), llvm::ARMBaseInstrInfo::storeRegToStackSlot(), llvm::Thumb1InstrInfo::storeRegToStackSlot(), llvm::Thumb2InstrInfo::storeRegToStackSlot(), llvm::HexagonInstrInfo::storeRegToStackSlot(), llvm::LoongArchInstrInfo::storeRegToStackSlot(), llvm::RISCVInstrInfo::storeRegToStackSlot(), llvm::SparcInstrInfo::storeRegToStackSlot(), llvm::VEInstrInfo::storeRegToStackSlot(), llvm::ARCInstrInfo::storeRegToStackSlot(), llvm::AVRInstrInfo::storeRegToStackSlot(), llvm::MSP430InstrInfo::storeRegToStackSlot(), llvm::XCoreInstrInfo::storeRegToStackSlot(), llvm::PPCInstrInfo::storeRegToStackSlotNoUpd(), and tryToElideArgumentCopy().

getObjectAllocation()

const AllocaInst * llvm::MachineFrameInfo::getObjectAllocation ( int  ObjectIdx ) const

inline

Return the underlying Alloca of the specified stack object if it exists.

Returns 0 if none exists.

Definition at line 512 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::MIRPrinter::convertStackObjects(), llvm::SSPLayoutInfo::copyToMachineFrameInfo(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), getMMOFrameID(), and printFrameIndex().

getObjectIndexBegin()

int llvm::MachineFrameInfo::getObjectIndexBegin ( ) const

inline

Return the minimum frame object index.

Definition at line 409 of file MachineFrameInfo.h.

Referenced by allSGPRSpillsAreDead(), allStackObjectsAreDead(), llvm::VirtRegMap::assignVirt2StackSlot(), computeFreeStackSlots(), llvm::MIRPrinter::convertStackObjects(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), determineSVEStackObjectOffsets(), llvm::XtensaFrameLowering::emitPrologue(), estimateStackSize(), llvm::MipsFrameLowering::estimateStackSize(), llvm::yaml::FrameIndex::FrameIndex(), llvm::yaml::FrameIndex::getFI(), llvm::R600FrameLowering::getFrameIndexReference(), getMMOFrameID(), getOrCreateFixedStackObject(), printFrameIndex(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::MSP430FrameLowering::processFunctionBeforeFrameFinalized(), and llvm::SIMachineFunctionInfo::removeDeadFrameIndices().

getObjectIndexEnd()

int llvm::MachineFrameInfo::getObjectIndexEnd ( ) const

inline

Return one past the maximum frame object index.

Definition at line 412 of file MachineFrameInfo.h.

Referenced by allSGPRSpillsAreDead(), allStackObjectsAreDead(), llvm::MIRPrinter::convertStackObjects(), llvm::SSPLayoutInfo::copyToMachineFrameInfo(), determineSVEStackObjectOffsets(), llvm::XtensaFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), estimateStackSize(), getMMOFrameID(), INITIALIZE_PASS(), llvm::HexagonFrameLowering::orderFrameObjects(), llvm::SystemZELFFrameLowering::orderFrameObjects(), llvm::X86FrameLowering::orderFrameObjects(), llvm::SIFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SIMachineFunctionInfo::removeDeadFrameIndices(), and llvm::AVRFrameAnalyzer::runOnMachineFunction().

getObjectOffset()

int64_t llvm::MachineFrameInfo::getObjectOffset ( int  ObjectIdx ) const

inline

Return the assigned stack offset of the specified object from the incoming stack pointer.

Definition at line 528 of file MachineFrameInfo.h.

References assert(), and isDeadObjectIndex().

Referenced by llvm::AMDGPUTargetLowering::addTokenForArgument(), llvm::HexagonFrameLowering::assignCalleeSavedSpillSlots(), llvm::SIRegisterInfo::buildSpillLoadStore(), computeFreeStackSlots(), llvm::MIRPrinter::convertStackObjects(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), llvm::AArch64RegisterInfo::eliminateFrameIndex(), llvm::ARCRegisterInfo::eliminateFrameIndex(), llvm::LanaiRegisterInfo::eliminateFrameIndex(), llvm::M68kRegisterInfo::eliminateFrameIndex(), llvm::MipsRegisterInfo::eliminateFrameIndex(), llvm::MSP430RegisterInfo::eliminateFrameIndex(), llvm::PPCRegisterInfo::eliminateFrameIndex(), llvm::XCoreRegisterInfo::eliminateFrameIndex(), llvm::AVRRegisterInfo::eliminateFrameIndex(), llvm::BPFRegisterInfo::eliminateFrameIndex(), llvm::NVPTXRegisterInfo::eliminateFrameIndex(), llvm::WebAssemblyRegisterInfo::eliminateFrameIndex(), llvm::XtensaRegisterInfo::eliminateFrameIndex(), llvm::MSP430FrameLowering::emitCalleeSavedFrameMoves(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::PPCFrameLowering::emitEpilogue(), llvm::XCoreFrameLowering::emitEpilogue(), llvm::TargetLoweringBase::emitPatchPoint(), llvm::XtensaFrameLowering::emitPrologue(), llvm::AArch64FrameLowering::emitPrologue(), llvm::ARCFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), emitVGSaveRestore(), llvm::BaseIndexOffset::equalBaseIndex(), estimateStackSize(), llvm::MipsFrameLowering::estimateStackSize(), llvm::TargetInstrInfo::foldMemoryOperand(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), GetEHSpillList(), llvm::TargetFrameLowering::getFrameIndexReference(), llvm::SIFrameLowering::getFrameIndexReference(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::M68kFrameLowering::getFrameIndexReference(), llvm::MipsSEFrameLowering::getFrameIndexReference(), llvm::NVPTXFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::SparcFrameLowering::getFrameIndexReference(), llvm::VEFrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::TargetFrameLowering::getFrameIndexReferenceFromSP(), llvm::AArch64FrameLowering::getFrameIndexReferenceFromSP(), llvm::AArch64FrameLowering::getFrameIndexReferencePreferSP(), llvm::X86FrameLowering::getFrameIndexReferenceSP(), llvm::ARMBankConflictHazardRecognizer::getHazardType(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), getOrCreateFixedStackObject(), llvm::AArch64FrameLowering::getSEHFrameIndexOffset(), GetSpillList(), isConsecutiveLSLoc(), MatchingStackOffset(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::AArch64FrameLowering::resolveFrameIndexReference(), llvm::ARMFrameLowering::ResolveFrameIndexReference(), and shouldClusterFI().

getObjectSize()

int64_t llvm::MachineFrameInfo::getObjectSize ( int  ObjectIdx ) const

inline

Return the size of the specified object.

Definition at line 472 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::addFrameReference(), addFrameReference(), llvm::M68k::addFrameReference(), llvm::M68k::addMemOperand(), llvm::AMDGPUTargetLowering::addTokenForArgument(), AdjustStackOffset(), llvm::StatepointLoweringState::allocateStackSlot(), llvm::SIMachineFunctionInfo::allocateVGPRSpillToAGPR(), buildEpilogRestore(), buildPrologSpill(), computeFreeStackSlots(), llvm::MIRPrinter::convertStackObjects(), determineSVEStackObjectOffsets(), llvm::ARCRegisterInfo::eliminateFrameIndex(), llvm::WebAssemblyRegisterInfo::eliminateFrameIndex(), llvm::ARCFrameLowering::emitEpilogue(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), llvm::TargetLoweringBase::emitPatchPoint(), llvm::ARCFrameLowering::emitPrologue(), estimateStackSize(), llvm::MipsFrameLowering::estimateStackSize(), foldInlineAsmMemOperand(), llvm::TargetInstrInfo::foldMemoryOperand(), llvm::SystemZInstrInfo::foldMemoryOperandImpl(), llvm::X86InstrInfo::foldMemoryOperandImpl(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), getFrameIndexMMO(), llvm::R600FrameLowering::getFrameIndexReference(), llvm::MipsInstrInfo::GetMemOperand(), getOrCreateFixedStackObject(), isConsecutiveLSLoc(), llvm::SystemZInstrInfo::isStackSlotCopy(), llvm::AArch64InstrInfo::loadRegFromStackSlot(), llvm::ARMBaseInstrInfo::loadRegFromStackSlot(), llvm::Thumb1InstrInfo::loadRegFromStackSlot(), llvm::Thumb2InstrInfo::loadRegFromStackSlot(), llvm::HexagonInstrInfo::loadRegFromStackSlot(), llvm::SparcInstrInfo::loadRegFromStackSlot(), llvm::VEInstrInfo::loadRegFromStackSlot(), llvm::LoongArchInstrInfo::loadRegFromStackSlot(), llvm::RISCVInstrInfo::loadRegFromStackSlot(), llvm::MSP430InstrInfo::loadRegFromStackSlot(), llvm::ARCInstrInfo::loadRegFromStackSlot(), llvm::AVRInstrInfo::loadRegFromStackSlot(), llvm::M68kInstrInfo::loadRegFromStackSlot(), llvm::X86InstrInfo::loadRegFromStackSlot(), llvm::XCoreInstrInfo::loadRegFromStackSlot(), llvm::PPCInstrInfo::loadRegFromStackSlotNoUpd(), MatchingStackOffset(), llvm::HexagonFrameLowering::orderFrameObjects(), llvm::SystemZELFFrameLowering::orderFrameObjects(), llvm::X86FrameLowering::orderFrameObjects(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZELFFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized(), llvm::AVRFrameAnalyzer::runOnMachineFunction(), scavengeStackSlot(), spillIncomingStatepointValue(), llvm::AArch64InstrInfo::storeRegToStackSlot(), llvm::ARMBaseInstrInfo::storeRegToStackSlot(), llvm::Thumb1InstrInfo::storeRegToStackSlot(), llvm::Thumb2InstrInfo::storeRegToStackSlot(), llvm::HexagonInstrInfo::storeRegToStackSlot(), llvm::LoongArchInstrInfo::storeRegToStackSlot(), llvm::RISCVInstrInfo::storeRegToStackSlot(), llvm::SparcInstrInfo::storeRegToStackSlot(), llvm::VEInstrInfo::storeRegToStackSlot(), llvm::ARCInstrInfo::storeRegToStackSlot(), llvm::AVRInstrInfo::storeRegToStackSlot(), llvm::M68kInstrInfo::storeRegToStackSlot(), llvm::MSP430InstrInfo::storeRegToStackSlot(), llvm::X86InstrInfo::storeRegToStackSlot(), llvm::XCoreInstrInfo::storeRegToStackSlot(), llvm::PPCInstrInfo::storeRegToStackSlotNoUpd(), and tryToElideArgumentCopy().

getObjectSSPLayout()

SSPLayoutKind llvm::MachineFrameInfo::getObjectSSPLayout ( int  ObjectIdx ) const

inline

Definition at line 570 of file MachineFrameInfo.h.

References assert().

getOffsetAdjustment()

int64_t llvm::MachineFrameInfo::getOffsetAdjustment ( ) const

inline

Return the correction for frame offsets.

Definition at line 596 of file MachineFrameInfo.h.

Referenced by llvm::CodeViewDebug::beginFunctionImpl(), llvm::MIRPrinter::convert(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::TargetFrameLowering::getFrameIndexReference(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::MipsSEFrameLowering::getFrameIndexReference(), and llvm::RISCVFrameLowering::getFrameIndexReference().

getPristineRegs()

BitVector MachineFrameInfo::getPristineRegs

(

const MachineFunction &

MF

)

const

Return a set of physical registers that are pristine.

Pristine registers hold a value that is useless to the current function, but that must be preserved - they are callee saved registers that are not saved.

Before the PrologueEpilogueInserter has placed the CSR spill code, this method always returns an empty set.

Definition at line 115 of file MachineFrameInfo.cpp.

References getCalleeSavedInfo(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), I, isCalleeSavedInfoValid(), MRI, llvm::BitVector::reset(), llvm::BitVector::set(), and TRI.

Referenced by llvm::ARMFrameLowering::emitEpilogue(), llvm::AggressiveAntiDepBreaker::StartBlock(), and llvm::CriticalAntiDepBreaker::StartBlock().

getRestorePoint()

MachineBasicBlock * llvm::MachineFrameInfo::getRestorePoint ( ) const

inline

Definition at line 825 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), and updateLiveness().

getSavePoint()

MachineBasicBlock * llvm::MachineFrameInfo::getSavePoint ( ) const

inline

Definition at line 823 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), and updateLiveness().

getStackID()

uint8_t llvm::MachineFrameInfo::getStackID ( int  ObjectIdx ) const

inline

See also

StackID

Definition at line 750 of file MachineFrameInfo.h.

Referenced by allSGPRSpillsAreDead(), llvm::SIRegisterInfo::buildVGPRSpillLoadStore(), computeFreeStackSlots(), llvm::MIRPrinter::convertStackObjects(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), determineSVEStackObjectOffsets(), emitCalleeSavedRestores(), estimateStackSize(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), getRVVCalleeSavedInfo(), getScavSlotsNumForRVV(), getUnmanagedCSI(), llvm::RISCVFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SIMachineFunctionInfo::removeDeadFrameIndices(), and setObjectAlignment().

getStackProtectorIndex()

int llvm::MachineFrameInfo::getStackProtectorIndex ( ) const

inline

Return the index for the stack protector object.

Definition at line 360 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convertStackObjects(), determineSVEStackObjectOffsets(), llvm::SelectionDAGBuilder::visitSPDescriptorParent(), and WindowsRequiresStackProbe().

getStackSize()

uint64_t llvm::MachineFrameInfo::getStackSize ( ) const

inline

Return the number of bytes that must be allocated to hold all of the fixed size frame objects.

This is only valid after Prolog/Epilog code insertion has finalized the stack frame layout.

Definition at line 587 of file MachineFrameInfo.h.

Referenced by llvm::X86FrameLowering::adjustForHiPEPrologue(), llvm::ARMFrameLowering::adjustForSegmentedStacks(), llvm::X86FrameLowering::adjustForSegmentedStacks(), llvm::CodeViewDebug::beginFunctionImpl(), llvm::MIRPrinter::convert(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), llvm::AArch64RegisterInfo::eliminateFrameIndex(), llvm::ARCRegisterInfo::eliminateFrameIndex(), llvm::LanaiRegisterInfo::eliminateFrameIndex(), llvm::MipsRegisterInfo::eliminateFrameIndex(), llvm::MSP430RegisterInfo::eliminateFrameIndex(), llvm::PPCRegisterInfo::eliminateFrameIndex(), llvm::XCoreRegisterInfo::eliminateFrameIndex(), llvm::AVRRegisterInfo::eliminateFrameIndex(), llvm::WebAssemblyRegisterInfo::eliminateFrameIndex(), llvm::XtensaRegisterInfo::eliminateFrameIndex(), llvm::SIFrameLowering::emitEntryFunctionPrologue(), llvm::AArch64FrameLowering::emitEpilogue(), llvm::SIFrameLowering::emitEpilogue(), llvm::ARCFrameLowering::emitEpilogue(), llvm::ARMFrameLowering::emitEpilogue(), llvm::Thumb1FrameLowering::emitEpilogue(), llvm::AVRFrameLowering::emitEpilogue(), llvm::LoongArchFrameLowering::emitEpilogue(), llvm::M68kFrameLowering::emitEpilogue(), llvm::Mips16FrameLowering::emitEpilogue(), llvm::MipsSEFrameLowering::emitEpilogue(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::SparcFrameLowering::emitEpilogue(), llvm::VEFrameLowering::emitEpilogue(), llvm::WebAssemblyFrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), llvm::XCoreFrameLowering::emitEpilogue(), llvm::XtensaFrameLowering::emitEpilogue(), llvm::MipsAsmPrinter::emitFrameDirective(), llvm::SystemZAsmPrinter::emitFunctionEntryLabel(), llvm::XtensaFrameLowering::emitPrologue(), llvm::AArch64FrameLowering::emitPrologue(), llvm::SIFrameLowering::emitPrologue(), llvm::ARCFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::AVRFrameLowering::emitPrologue(), llvm::LanaiFrameLowering::emitPrologue(), llvm::LoongArchFrameLowering::emitPrologue(), llvm::M68kFrameLowering::emitPrologue(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::MSP430FrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::VEFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), llvm::AsmPrinter::emitStackSizeSection(), llvm::AsmPrinter::emitStackUsage(), llvm::X86FrameLowering::getDwarfFrameBase(), llvm::LoongArchFrameLowering::getFirstSPAdjustAmount(), llvm::TargetFrameLowering::getFrameIndexReference(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::M68kFrameLowering::getFrameIndexReference(), llvm::MipsSEFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::SparcFrameLowering::getFrameIndexReference(), llvm::VEFrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReferencePreferSP(), llvm::AArch64InstrInfo::getOutliningTypeImpl(), llvm::ARMBaseInstrInfo::getOutliningTypeImpl(), llvm::RISCVFrameLowering::getStackSizeWithRVVPadding(), llvm::SIFrameLowering::hasFPImpl(), llvm::HexagonFrameLowering::hasFPImpl(), llvm::PPCFrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), needsSplitStackProlog(), llvm::PPCRegisterInfo::prepareDynamicAlloca(), llvm::ARCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), llvm::ARMFrameLowering::ResolveFrameIndexReference(), llvm::HexagonPacketizerList::useCalleesSP(), and llvm::HexagonPacketizerList::useCallersSP().

getUnsafeStackSize()

uint64_t llvm::MachineFrameInfo::getUnsafeStackSize ( ) const

inline

Definition at line 828 of file MachineFrameInfo.h.

Referenced by llvm::AsmPrinter::emitStackSizeSection(), and llvm::AsmPrinter::emitStackUsage().

getUseLocalStackAllocationBlock()

bool llvm::MachineFrameInfo::getUseLocalStackAllocationBlock ( ) const

inline

Get whether the local allocation blob should be allocated together or let PEI allocate the locals in it directly.

Definition at line 453 of file MachineFrameInfo.h.

Referenced by isSlotPreAllocated().

hasCalls()

bool llvm::MachineFrameInfo::hasCalls ( ) const

inline

Return true if the current function has any function calls.

Definition at line 621 of file MachineFrameInfo.h.

References HasCalls.

Referenced by llvm::X86FrameLowering::adjustForHiPEPrologue(), llvm::ARCFrameLowering::assignCalleeSavedSpillSlots(), llvm::PPCFrameLowering::assignCalleeSavedSpillSlots(), llvm::AArch64FrameLowering::canUseRedZone(), llvm::MIRPrinter::convert(), llvm::CSKYFrameLowering::determineCalleeSaves(), llvm::SystemZELFFrameLowering::determineCalleeSaves(), llvm::SIFrameLowering::determineCalleeSavesSGPR(), llvm::SIFrameLowering::determinePrologEpilogSGPRSaves(), llvm::TargetOptions::DisableFramePointerElim(), llvm::SIFrameLowering::emitEntryFunctionPrologue(), llvm::ARCFrameLowering::emitEpilogue(), llvm::ARCFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::SIFrameLowering::hasFPImpl(), llvm::HexagonFrameLowering::hasFPImpl(), isXPLeafCandidate(), llvm::WebAssemblyFrameLowering::needsPrologForEH(), llvm::SIRegisterInfo::requiresRegisterScavenging(), llvm::SIFrameLowering::requiresStackPointerReference(), reservePrivateMemoryRegs(), llvm::SelectionDAGISel::runOnMachineFunction(), llvm::InstructionSelect::selectMachineFunction(), and llvm::SIMachineFunctionInfo::usesAGPRs().

hasCopyImplyingStackAdjustment()

bool llvm::MachineFrameInfo::hasCopyImplyingStackAdjustment ( ) const

inline

Returns true if the function contains operations which will lower down to instructions which manipulate the stack pointer.

Definition at line 630 of file MachineFrameInfo.h.

Referenced by llvm::X86FrameLowering::emitPrologue(), and llvm::X86FrameLowering::hasFPImpl().

hasFunctionContextIndex()

bool llvm::MachineFrameInfo::hasFunctionContextIndex ( ) const

inline

Definition at line 368 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convertStackObjects().

hasMustTailInVarArgFunc()

bool llvm::MachineFrameInfo::hasMustTailInVarArgFunc ( ) const

inline

Returns true if the function is variadic and contains a musttail call.

Definition at line 642 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), and handleMustTailForwardedRegisters().

hasOpaqueSPAdjustment()

bool llvm::MachineFrameInfo::hasOpaqueSPAdjustment ( ) const

inline

Returns true if the function contains opaque dynamic stack adjustments.

Definition at line 625 of file MachineFrameInfo.h.

Referenced by llvm::RegsForValue::AddInlineAsmOperands(), CantUseSP(), llvm::MIRPrinter::convert(), and llvm::X86FrameLowering::hasFPImpl().

hasPatchPoint()

bool llvm::MachineFrameInfo::hasPatchPoint ( ) const

inline

This method may be called any time after instruction selection is complete to determine if there is a call to builtin @llvm.experimental.patchpoint.

Definition at line 391 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), frameTriviallyRequiresSP(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), llvm::X86FrameLowering::hasFPImpl(), and llvm::PPCFrameLowering::needsFP().

hasStackMap()

bool llvm::MachineFrameInfo::hasStackMap ( ) const

inline

This method may be called any time after instruction selection is complete to determine if there is a call to builtin @llvm.experimental.stackmap.

Definition at line 385 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), frameTriviallyRequiresSP(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), llvm::X86FrameLowering::hasFPImpl(), and llvm::PPCFrameLowering::needsFP().

hasStackObjects()

bool llvm::MachineFrameInfo::hasStackObjects ( ) const

inline

Return true if there are any stack objects in this function.

Definition at line 352 of file MachineFrameInfo.h.

Referenced by llvm::NVPTXFrameLowering::emitPrologue(), llvm::TargetFrameLowering::needsFrameIndexResolution(), llvm::M68kFrameLowering::needsFrameIndexResolution(), llvm::X86FrameLowering::needsFrameIndexResolution(), llvm::ARCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::SIRegisterInfo::requiresFrameIndexReplacementScavenging(), llvm::SIRegisterInfo::requiresRegisterScavenging(), and reservePrivateMemoryRegs().

hasStackProtectorIndex()

bool llvm::MachineFrameInfo::hasStackProtectorIndex ( ) const

inline

Definition at line 362 of file MachineFrameInfo.h.

Referenced by llvm::CodeViewDebug::beginFunctionImpl(), llvm::MIRPrinter::convertStackObjects(), and determineSVEStackObjectOffsets().

hasTailCall()

bool llvm::MachineFrameInfo::hasTailCall ( ) const

inline

Returns true if the function contains a tail call.

Definition at line 646 of file MachineFrameInfo.h.

Referenced by llvm::SIMachineFunctionInfo::allocateWWMSpill(), llvm::MIRPrinter::convert(), llvm::SIFrameLowering::determineCalleeSaves(), getUnderlyingObjectsForInstr(), needsSplitStackProlog(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), and llvm::RISCVMachineFunctionInfo::useSaveRestoreLibCalls().

hasVarSizedObjects()

bool llvm::MachineFrameInfo::hasVarSizedObjects ( ) const

inline

This method may be called any time after instruction selection is complete to determine if the stack frame for this function contains any variable sized objects.

Definition at line 357 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), llvm::CodeViewDebug::beginFunctionImpl(), llvm::AArch64RegisterInfo::cannotEliminateFrame(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), llvm::ARMFrameLowering::canSimplifyCallFramePseudos(), CantUseSP(), llvm::MipsSEFrameLowering::determineCalleeSaves(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::AArch64FrameLowering::eliminateCallFramePseudoInstr(), llvm::AArch64RegisterInfo::eliminateFrameIndex(), llvm::ARMBaseRegisterInfo::eliminateFrameIndex(), llvm::ThumbRegisterInfo::eliminateFrameIndex(), llvm::AArch64FrameLowering::emitEpilogue(), llvm::AVRFrameLowering::emitEpilogue(), llvm::LoongArchFrameLowering::emitEpilogue(), llvm::M68kFrameLowering::emitEpilogue(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::RISCVFrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), llvm::SystemZAsmPrinter::emitFunctionEntryLabel(), llvm::AArch64FrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::LanaiFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::AsmPrinter::emitStackSizeSection(), llvm::AsmPrinter::emitStackUsage(), estimateStackSize(), frameTriviallyRequiresSP(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::AArch64FrameLowering::getFrameIndexReferencePreferSP(), llvm::R600InstrInfo::getIndirectIndexEnd(), llvm::ARMSubtarget::getPushPopSplitVariation(), llvm::MipsRegisterInfo::getReservedRegs(), llvm::AArch64RegisterInfo::hasBasePointer(), llvm::ARMBaseRegisterInfo::hasBasePointer(), llvm::LanaiRegisterInfo::hasBasePointer(), llvm::CSKYFrameLowering::hasBP(), llvm::LoongArchFrameLowering::hasBP(), llvm::MipsFrameLowering::hasBP(), llvm::RISCVFrameLowering::hasBP(), llvm::VEFrameLowering::hasBP(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::ARCFrameLowering::hasFPImpl(), llvm::ARMFrameLowering::hasFPImpl(), llvm::AVRFrameLowering::hasFPImpl(), llvm::CSKYFrameLowering::hasFPImpl(), llvm::HexagonFrameLowering::hasFPImpl(), llvm::LoongArchFrameLowering::hasFPImpl(), llvm::M68kFrameLowering::hasFPImpl(), llvm::MipsFrameLowering::hasFPImpl(), llvm::MSP430FrameLowering::hasFPImpl(), llvm::RISCVFrameLowering::hasFPImpl(), llvm::SparcFrameLowering::hasFPImpl(), llvm::SystemZELFFrameLowering::hasFPImpl(), llvm::SystemZXPLINKFrameLowering::hasFPImpl(), llvm::VEFrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), llvm::X86FrameLowering::hasFPImpl(), llvm::XCoreFrameLowering::hasFPImpl(), llvm::XtensaFrameLowering::hasFPImpl(), llvm::AArch64FrameLowering::hasReservedCallFrame(), llvm::ARMFrameLowering::hasReservedCallFrame(), llvm::Thumb1FrameLowering::hasReservedCallFrame(), llvm::AVRFrameLowering::hasReservedCallFrame(), llvm::CSKYFrameLowering::hasReservedCallFrame(), llvm::LoongArchFrameLowering::hasReservedCallFrame(), llvm::M68kFrameLowering::hasReservedCallFrame(), llvm::Mips16FrameLowering::hasReservedCallFrame(), llvm::MipsSEFrameLowering::hasReservedCallFrame(), llvm::MSP430FrameLowering::hasReservedCallFrame(), llvm::RISCVFrameLowering::hasReservedCallFrame(), llvm::SparcFrameLowering::hasReservedCallFrame(), llvm::WebAssemblyFrameLowering::hasReservedCallFrame(), llvm::X86FrameLowering::hasReservedCallFrame(), isXPLeafCandidate(), llvm::HexagonFrameLowering::needsAligna(), llvm::PPCFrameLowering::needsFP(), llvm::ARMBaseRegisterInfo::needsFrameBaseReg(), llvm::HexagonFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCFrameLowering::replaceFPWithRealFP(), and llvm::HexagonDAGToDAGISel::SelectFrameIndex().

hasVAStart()

bool llvm::MachineFrameInfo::hasVAStart ( ) const

inline

Returns true if the function calls the llvm.va_start intrinsic.

Definition at line 638 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert().

isAliasedObjectIndex()

bool llvm::MachineFrameInfo::isAliasedObjectIndex ( int  ObjectIdx ) const

inline

Returns true if the specified index corresponds to an object that might be pointed to by an LLVM IR value.

Definition at line 706 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::MIRPrinter::convertStackObjects(), and llvm::FixedStackPseudoSourceValue::isAliased().

isCalleeSavedInfoValid()

bool llvm::MachineFrameInfo::isCalleeSavedInfoValid ( ) const

inline

Has the callee saved info been calculated yet?

Definition at line 819 of file MachineFrameInfo.h.

Referenced by llvm::LiveRegUnits::addLiveOuts(), llvm::LivePhysRegs::addLiveOutsNoPristines(), llvm::MIRPrinter::convert(), llvm::AArch64FrameLowering::determineCalleeSaves(), llvm::AArch64FunctionInfo::getCalleeSavedStackSize(), llvm::TargetFrameLowering::getCalleeSaves(), llvm::AArch64InstrInfo::getOutliningTypeImpl(), llvm::ARMBaseInstrInfo::getOutliningTypeImpl(), getPristineRegs(), getSVECalleeSaveSlotRange(), llvm::recomputeLivenessFlags(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), and llvm::ARMFrameLowering::updateLRRestored().

isDeadObjectIndex()

bool llvm::MachineFrameInfo::isDeadObjectIndex ( int  ObjectIdx ) const

inline

Returns true if the specified index corresponds to a dead object.

Definition at line 764 of file MachineFrameInfo.h.

References assert().

Referenced by allSGPRSpillsAreDead(), allStackObjectsAreDead(), llvm::MIRPrinter::convertStackObjects(), llvm::SSPLayoutInfo::copyToMachineFrameInfo(), determineSVEStackObjectOffsets(), llvm::XtensaFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), estimateStackSize(), getObjectOffset(), setObjectOffset(), and setObjectSSPLayout().

isFixedObjectIndex()

bool llvm::MachineFrameInfo::isFixedObjectIndex ( int  ObjectIdx ) const

inline

Returns true if the specified index corresponds to a fixed stack object.

Definition at line 700 of file MachineFrameInfo.h.

Referenced by llvm::GISelAddressing::aliasIsKnownForLoadStore(), llvm::SIRegisterInfo::buildVGPRSpillLoadStore(), llvm::BaseIndexOffset::computeAliasing(), llvm::X86RegisterInfo::eliminateFrameIndex(), llvm::PPCFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitPrologue(), llvm::BaseIndexOffset::equalBaseIndex(), llvm::yaml::FrameIndex::FrameIndex(), llvm::HexagonFrameLowering::getFrameIndexReference(), llvm::LoongArchFrameLowering::getFrameIndexReference(), llvm::MipsSEFrameLowering::getFrameIndexReference(), llvm::RISCVFrameLowering::getFrameIndexReference(), llvm::VEFrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReference(), llvm::X86FrameLowering::getFrameIndexReferencePreferSP(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), llvm::X86InstrInfo::loadRegFromStackSlot(), LowerAsSplatVectorLoad(), MatchingStackOffset(), printFrameIndex(), llvm::SIFrameLowering::processFunctionBeforeFrameFinalized(), llvm::PPCRegisterInfo::requiresFrameIndexScavenging(), llvm::ARMFrameLowering::ResolveFrameIndexReference(), llvm::AVRFrameAnalyzer::runOnMachineFunction(), llvm::HexagonDAGToDAGISel::SelectAddrFI(), shouldClusterFI(), and llvm::X86InstrInfo::storeRegToStackSlot().

isFrameAddressTaken()

bool llvm::MachineFrameInfo::isFrameAddressTaken ( ) const

inline

This method may be called any time after instruction selection is complete to determine if there is a call to @llvm.frameaddress in this function.

Definition at line 373 of file MachineFrameInfo.h.

Referenced by llvm::AArch64RegisterInfo::cannotEliminateFrame(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), llvm::MIRPrinter::convert(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::PPCFrameLowering::emitPrologue(), llvm::AArch64FrameLowering::hasFPImpl(), llvm::SIFrameLowering::hasFPImpl(), llvm::ARCFrameLowering::hasFPImpl(), llvm::ARMFrameLowering::hasFPImpl(), llvm::CSKYFrameLowering::hasFPImpl(), llvm::LoongArchFrameLowering::hasFPImpl(), llvm::M68kFrameLowering::hasFPImpl(), llvm::MipsFrameLowering::hasFPImpl(), llvm::MSP430FrameLowering::hasFPImpl(), llvm::RISCVFrameLowering::hasFPImpl(), llvm::SparcFrameLowering::hasFPImpl(), llvm::VEFrameLowering::hasFPImpl(), llvm::WebAssemblyFrameLowering::hasFPImpl(), and llvm::X86FrameLowering::hasFPImpl().

isImmutableObjectIndex()

bool llvm::MachineFrameInfo::isImmutableObjectIndex ( int  ObjectIdx ) const

inline

Returns true if the specified index corresponds to an immutable object.

Definition at line 720 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::MIRPrinter::convertStackObjects(), llvm::FixedStackPseudoSourceValue::isConstant(), llvm::TargetInstrInfo::isReallyTriviallyReMaterializable(), and MatchingStackOffset().

isMaxCallFrameSizeComputed()

bool llvm::MachineFrameInfo::isMaxCallFrameSizeComputed ( ) const

inline

Definition at line 673 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), getMaxCallFrameSize(), llvm::ARMBaseRegisterInfo::getRegPressureLimit(), llvm::RISCVFrameLowering::hasBP(), llvm::AArch64FrameLowering::hasFPImpl(), and llvm::AArch64Subtarget::mirFileLoaded().

isObjectPreAllocated()

bool llvm::MachineFrameInfo::isObjectPreAllocated ( int  ObjectIdx ) const

inline

Return true if the object was pre-allocated into the local block.

Definition at line 465 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::HexagonFrameLowering::getFrameIndexReference(), and isSlotPreAllocated().

isObjectSExt()

bool llvm::MachineFrameInfo::isObjectSExt ( int  ObjectIdx ) const

inline

Definition at line 548 of file MachineFrameInfo.h.

References assert().

Referenced by MatchingStackOffset().

isObjectZExt()

bool llvm::MachineFrameInfo::isObjectZExt ( int  ObjectIdx ) const

inline

Definition at line 536 of file MachineFrameInfo.h.

References assert().

Referenced by MatchingStackOffset().

isReturnAddressTaken()

bool llvm::MachineFrameInfo::isReturnAddressTaken ( ) const

inline

This method may be called any time after instruction selection is complete to determine if there is a call to @llvm.returnaddress in this function.

Definition at line 379 of file MachineFrameInfo.h.

Referenced by llvm::MIRPrinter::convert(), llvm::ARMFrameLowering::determineCalleeSaves(), llvm::LoongArchFrameLowering::spillCalleeSavedRegisters(), llvm::Mips16FrameLowering::spillCalleeSavedRegisters(), llvm::MipsSEFrameLowering::spillCalleeSavedRegisters(), and llvm::XtensaFrameLowering::spillCalleeSavedRegisters().

isSpillSlotObjectIndex()

bool llvm::MachineFrameInfo::isSpillSlotObjectIndex ( int  ObjectIdx ) const

inline

Returns true if the specified index corresponds to a spill slot.

Definition at line 737 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::SIMachineFunctionInfo::allocateVGPRSpillToAGPR(), llvm::MIRPrinter::convertStackObjects(), llvm::MachineInstr::getRestoreSize(), llvm::MachineInstr::getSpillSize(), getSpillSlotSize(), and llvm::FixedStackPseudoSourceValue::mayAlias().

isStackRealignable()

bool llvm::MachineFrameInfo::isStackRealignable ( ) const

inline

Definition at line 349 of file MachineFrameInfo.h.

Referenced by llvm::TargetRegisterInfo::canRealignStack().

isStatepointSpillSlotObjectIndex()

bool llvm::MachineFrameInfo::isStatepointSpillSlotObjectIndex ( int  ObjectIdx ) const

inline

Definition at line 743 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::TargetLoweringBase::emitPatchPoint(), and markAsStatepointSpillSlotObjectIndex().

isVariableSizedObjectIndex()

bool llvm::MachineFrameInfo::isVariableSizedObjectIndex ( int  ObjectIdx ) const

inline

Returns true if the specified index corresponds to a variable sized object.

Definition at line 772 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::MIRPrinter::convertStackObjects(), and scavengeStackSlot().

mapLocalFrameObject()

void llvm::MachineFrameInfo::mapLocalFrameObject ( int  ObjectIndex, int64_t  Offset  )

inline

Map a frame index into the local object block.

Definition at line 421 of file MachineFrameInfo.h.

References llvm::Offset.

Referenced by llvm::MIRParserImpl::initializeFrameInfo().

markAsStatepointSpillSlotObjectIndex()

void llvm::MachineFrameInfo::markAsStatepointSpillSlotObjectIndex ( int  ObjectIdx )

inline

Definition at line 778 of file MachineFrameInfo.h.

References assert(), and isStatepointSpillSlotObjectIndex().

Referenced by llvm::StatepointLoweringState::allocateStackSlot().

needsSplitStackProlog()

bool llvm::MachineFrameInfo::needsSplitStackProlog ( ) const

inline

Return true if this function requires a split stack prolog, even if it uses no stack space.

This is only meaningful for functions where MachineFunction::shouldSplitStack() returns true.

Definition at line 404 of file MachineFrameInfo.h.

References getStackSize(), and hasTailCall().

Referenced by llvm::ARMFrameLowering::adjustForSegmentedStacks(), llvm::X86FrameLowering::adjustForSegmentedStacks(), and llvm::AsmPrinter::SetupMachineFunction().

print()

void MachineFrameInfo::print	(	const MachineFunction &	MF,
		raw_ostream &	OS
	)		const

Used by the MachineFunction printer to print information about stack objects.

Implemented in MachineFunction.cpp.

Definition at line 209 of file MachineFrameInfo.cpp.

References llvm::TargetSubtargetInfo::getFrameLowering(), llvm::TargetFrameLowering::getOffsetOfLocalArea(), llvm::MachineFunction::getSubtarget(), and OS.

Referenced by dump(), and llvm::MachineFunction::print().

RemoveStackObject()

void llvm::MachineFrameInfo::RemoveStackObject ( int  ObjectIdx )

inline

Remove or mark dead a statically sized stack object.

Definition at line 795 of file MachineFrameInfo.h.

Referenced by llvm::AArch64TargetLowering::EmitInitTPIDR2Object(), getVGPRSpillLaneOrTempRegister(), llvm::SIMachineFunctionInfo::removeDeadFrameIndices(), and tryToElideArgumentCopy().

setAdjustsStack()

void llvm::MachineFrameInfo::setAdjustsStack ( bool  V )

inline

Definition at line 618 of file MachineFrameInfo.h.

Referenced by llvm::HexagonTargetLowering::GetDynamicTLSAddr(), llvm::MIRParserImpl::initializeFrameInfo(), LowerINTRINSIC_W_CHAIN(), llvm::TargetLowering::LowerToTLSEmulatedModel(), and runImpl().

setCalleeSavedInfo()

void llvm::MachineFrameInfo::setCalleeSavedInfo ( std::vector< CalleeSavedInfo >  CSI )

inline

Used by prolog/epilog inserter to set the function's callee saved information.

Definition at line 814 of file MachineFrameInfo.h.

Referenced by assignCalleeSavedSpillSlots(), and llvm::MIRParserImpl::initializeFrameInfo().

setCalleeSavedInfoValid()

void llvm::MachineFrameInfo::setCalleeSavedInfoValid ( bool  v )

inline

Definition at line 821 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo().

setCVBytesOfCalleeSavedRegisters()

void llvm::MachineFrameInfo::setCVBytesOfCalleeSavedRegisters ( unsigned  S )

inline

Definition at line 683 of file MachineFrameInfo.h.

Referenced by llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), and llvm::MIRParserImpl::initializeFrameInfo().

setFrameAddressIsTaken()

void llvm::MachineFrameInfo::setFrameAddressIsTaken ( bool  T )

inline

Definition at line 374 of file MachineFrameInfo.h.

References T.

Referenced by getFRAMEADDR(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::HexagonTargetLowering::LowerFRAMEADDR(), llvm::LanaiTargetLowering::LowerFRAMEADDR(), llvm::MSP430TargetLowering::LowerFRAMEADDR(), lowerFRAMEADDR(), LowerINTRINSIC_W_CHAIN(), llvm::VETargetLowering::lowerVASTART(), and LowerVASTART().

setFunctionContextIndex()

void llvm::MachineFrameInfo::setFunctionContextIndex ( int  I )

inline

Definition at line 367 of file MachineFrameInfo.h.

References I.

Referenced by llvm::MIRParserImpl::initializeFrameInfo().

setHasCalls()

void llvm::MachineFrameInfo::setHasCalls ( bool  V )

inline

Definition at line 622 of file MachineFrameInfo.h.

References HasCalls.

Referenced by GetTLSADDR(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::HexagonTargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerGlobalTLSAddress(), llvm::TargetLowering::LowerToTLSEmulatedModel(), llvm::VETargetLowering::lowerToTLSGeneralDynamicModel(), llvm::SparcTargetLowering::makeAddress(), llvm::SelectionDAGISel::runOnMachineFunction(), and llvm::InstructionSelect::selectMachineFunction().

setHasCopyImplyingStackAdjustment()

void llvm::MachineFrameInfo::setHasCopyImplyingStackAdjustment ( bool  B )

inline

Definition at line 633 of file MachineFrameInfo.h.

References B.

Referenced by LowerINTRINSIC_W_CHAIN().

setHasMustTailInVarArgFunc()

void llvm::MachineFrameInfo::setHasMustTailInVarArgFunc ( bool  B )

inline

Definition at line 643 of file MachineFrameInfo.h.

References B.

Referenced by llvm::MIRParserImpl::initializeFrameInfo(), llvm::IRTranslator::runOnMachineFunction(), and llvm::FunctionLoweringInfo::set().

setHasOpaqueSPAdjustment()

void llvm::MachineFrameInfo::setHasOpaqueSPAdjustment ( bool  B )

inline

Definition at line 626 of file MachineFrameInfo.h.

References B.

Referenced by llvm::MIRParserImpl::initializeFrameInfo(), and llvm::FunctionLoweringInfo::set().

setHasPatchPoint()

void llvm::MachineFrameInfo::setHasPatchPoint ( bool  s = true )

inline

Definition at line 392 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo(), and llvm::FastISel::selectPatchpoint().

setHasStackMap()

void llvm::MachineFrameInfo::setHasStackMap ( bool  s = true )

inline

Definition at line 386 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo(), and llvm::FastISel::selectStackmap().

setHasTailCall()

void llvm::MachineFrameInfo::setHasTailCall ( bool  V = true )

inline

Definition at line 647 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo(), llvm::SITargetLowering::LowerCall(), llvm::HexagonTargetLowering::LowerCall(), llvm::LoongArchTargetLowering::LowerCall(), llvm::RISCVTargetLowering::LowerCall(), llvm::SparcTargetLowering::LowerCall_32(), llvm::SparcTargetLowering::LowerCall_64(), and llvm::AMDGPUCallLowering::lowerTailCall().

setHasVAStart()

void llvm::MachineFrameInfo::setHasVAStart ( bool  B )

inline

Definition at line 639 of file MachineFrameInfo.h.

References B.

Referenced by llvm::MIRParserImpl::initializeFrameInfo(), and llvm::FunctionLoweringInfo::set().

setIsAliasedObjectIndex()

void llvm::MachineFrameInfo::setIsAliasedObjectIndex ( int  ObjectIdx, bool  IsAliased  )

inline

Set "maybe pointed to by an LLVM IR value" for an object.

Definition at line 713 of file MachineFrameInfo.h.

References assert().

Referenced by tryToElideArgumentCopy().

setIsImmutableObjectIndex()

void llvm::MachineFrameInfo::setIsImmutableObjectIndex ( int  ObjectIdx, bool  IsImmutable  )

inline

Marks the immutability of an object.

Definition at line 730 of file MachineFrameInfo.h.

References assert().

Referenced by tryToElideArgumentCopy().

setLocalFrameMaxAlign()

void llvm::MachineFrameInfo::setLocalFrameMaxAlign ( Align  Alignment )

inline

Required alignment of the local object blob, which is the strictest alignment of any object in it.

Definition at line 444 of file MachineFrameInfo.h.

setLocalFrameSize()

void llvm::MachineFrameInfo::setLocalFrameSize ( int64_t  sz )

inline

Set the size of the local object blob.

Definition at line 437 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo().

setMaxCallFrameSize()

void llvm::MachineFrameInfo::setMaxCallFrameSize ( uint64_t  S )

inline

Definition at line 676 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::determineFrameLayoutAndUpdate(), llvm::MIRParserImpl::initializeFrameInfo(), and llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized().

setObjectAlignment()

void llvm::MachineFrameInfo::setObjectAlignment ( int  ObjectIdx, Align  Alignment  )

inline

setObjectAlignment - Change the alignment of the specified stack object.

Definition at line 499 of file MachineFrameInfo.h.

References assert(), contributesToMaxAlignment(), ensureMaxAlignment(), and getStackID().

Referenced by computeCalleeSaveRegisterPairs(), emitAlignedDPRCS2Spills(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), llvm::MIRParserImpl::initializeFrameInfo(), LowerAsSplatVectorLoad(), and llvm::FunctionLoweringInfo::set().

setObjectOffset()

void llvm::MachineFrameInfo::setObjectOffset ( int  ObjectIdx, int64_t  SPOffset  )

inline

Set the stack frame offset of the specified object.

The offset is relative to the stack pointer on entry to the function.

Definition at line 562 of file MachineFrameInfo.h.

References assert(), and isDeadObjectIndex().

Referenced by AdjustStackOffset(), llvm::ARCFrameLowering::assignCalleeSavedSpillSlots(), llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), determineSVEStackObjectOffsets(), llvm::XtensaFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), and scavengeStackSlot().

setObjectSExt()

void llvm::MachineFrameInfo::setObjectSExt ( int  ObjectIdx, bool  IsSExt  )

inline

Definition at line 554 of file MachineFrameInfo.h.

References assert().

setObjectSize()

void llvm::MachineFrameInfo::setObjectSize ( int  ObjectIdx, int64_t  Size  )

inline

Change the size of the specified stack object.

Definition at line 479 of file MachineFrameInfo.h.

References assert(), and Size.

Referenced by llvm::WebAssemblyFrameLowering::getLocalForStackObject().

setObjectSSPLayout()

void llvm::MachineFrameInfo::setObjectSSPLayout ( int  ObjectIdx, SSPLayoutKind  Kind  )

inline

Definition at line 576 of file MachineFrameInfo.h.

References assert(), and isDeadObjectIndex().

Referenced by llvm::SSPLayoutInfo::copyToMachineFrameInfo().

setObjectZExt()

void llvm::MachineFrameInfo::setObjectZExt ( int  ObjectIdx, bool  IsZExt  )

inline

Definition at line 542 of file MachineFrameInfo.h.

References assert().

setOffsetAdjustment()

void llvm::MachineFrameInfo::setOffsetAdjustment ( int64_t  Adj )

inline

Set the correction for frame offsets.

Definition at line 599 of file MachineFrameInfo.h.

Referenced by llvm::ARMFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::M68kFrameLowering::emitPrologue(), llvm::MSP430FrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::MIRParserImpl::initializeFrameInfo(), and llvm::SystemZXPLINKFrameLowering::processFunctionBeforeFrameFinalized().

setRestorePoint()

void llvm::MachineFrameInfo::setRestorePoint ( MachineBasicBlock *  NewRestore )

inline

Definition at line 826 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo().

setReturnAddressIsTaken()

void llvm::MachineFrameInfo::setReturnAddressIsTaken ( bool  s )

inline

Definition at line 380 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo(), llvm::HexagonTargetLowering::LowerRETURNADDR(), llvm::LanaiTargetLowering::LowerRETURNADDR(), llvm::MSP430TargetLowering::LowerRETURNADDR(), LowerRETURNADDR(), and lowerRETURNADDR().

setSavePoint()

void llvm::MachineFrameInfo::setSavePoint ( MachineBasicBlock *  NewSave )

inline

Definition at line 824 of file MachineFrameInfo.h.

Referenced by llvm::MIRParserImpl::initializeFrameInfo().

setStackID()

void llvm::MachineFrameInfo::setStackID ( int  ObjectIdx, uint8_t  ID  )

inline

See also

StackID

Definition at line 755 of file MachineFrameInfo.h.

References assert().

Referenced by llvm::SystemZXPLINKFrameLowering::assignCalleeSavedSpillSlots(), llvm::RISCVFrameLowering::assignCalleeSavedSpillSlots(), llvm::WebAssemblyFrameLowering::getLocalForStackObject(), llvm::SystemZXPLINKFrameLowering::getOrCreateFramePointerSaveIndex(), llvm::MIRParserImpl::initializeFrameInfo(), llvm::AArch64InstrInfo::loadRegFromStackSlot(), llvm::RISCVInstrInfo::loadRegFromStackSlot(), llvm::SIMachineFunctionInfo::removeDeadFrameIndices(), llvm::FunctionLoweringInfo::set(), llvm::AArch64FrameLowering::spillCalleeSavedRegisters(), llvm::AArch64InstrInfo::storeRegToStackSlot(), and llvm::RISCVInstrInfo::storeRegToStackSlot().

setStackProtectorIndex()

void llvm::MachineFrameInfo::setStackProtectorIndex ( int  I )

inline

Definition at line 361 of file MachineFrameInfo.h.

References I.

Referenced by llvm::MIRParserImpl::initializeFrameInfo().

setStackSize()

void llvm::MachineFrameInfo::setStackSize ( uint64_t  Size )

inline

Set the size of the stack.

Definition at line 590 of file MachineFrameInfo.h.

References Size.

Referenced by llvm::SystemZXPLINKFrameLowering::determineFrameLayout(), llvm::PPCFrameLowering::determineFrameLayoutAndUpdate(), llvm::XtensaFrameLowering::emitPrologue(), llvm::ARCFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::SparcFrameLowering::emitPrologue(), llvm::SystemZELFFrameLowering::emitPrologue(), llvm::VEFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), and llvm::MIRParserImpl::initializeFrameInfo().

setUnsafeStackSize()

void llvm::MachineFrameInfo::setUnsafeStackSize ( uint64_t  Size )

inline

Definition at line 829 of file MachineFrameInfo.h.

References Size.

Referenced by setUnsafeStackSize().

setUseLocalStackAllocationBlock()

void llvm::MachineFrameInfo::setUseLocalStackAllocationBlock ( bool  v )

inline

setUseLocalStackAllocationBlock - Set whether the local allocation blob should be allocated together or let PEI allocate the locals in it directly.

Definition at line 460 of file MachineFrameInfo.h.

Referenced by INITIALIZE_PASS().

shouldRealignStack()

bool llvm::MachineFrameInfo::shouldRealignStack ( ) const

inline

Return true if stack realignment is forced by function attributes or if the stack alignment.

Definition at line 610 of file MachineFrameInfo.h.

Referenced by llvm::TargetRegisterInfo::shouldRealignStack().

---

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

• include/llvm/CodeGen/MachineFrameInfo.h
• lib/CodeGen/MachineFrameInfo.cpp