Abstract Stack Frame Information. More...

#include <MachineFrameInfo.h>

Public Member Functions
	MachineFrameInfo (const TargetMachine &TM, bool RealignOpt)

bool	hasStackObjects () const

bool	hasVarSizedObjects () const

int	getStackProtectorIndex () const

void	setStackProtectorIndex (int I)

int	getFunctionContextIndex () const

void	setFunctionContextIndex (int I)

bool	isFrameAddressTaken () const

void	setFrameAddressIsTaken (bool T)

bool	isReturnAddressTaken () const

void	setReturnAddressIsTaken (bool s)

int	getObjectIndexBegin () const

int	getObjectIndexEnd () const

unsigned	getNumFixedObjects () const
	getNumFixedObjects - Return the number of fixed objects. More...

unsigned	getNumObjects () const

void	mapLocalFrameObject (int ObjectIndex, int64_t Offset)
	mapLocalFrameObject - Map a frame index into the local object block More...

std::pair< int, int64_t >	getLocalFrameObjectMap (int i)
	getLocalFrameObjectMap - Get the local offset mapping for a for an object More...

int64_t	getLocalFrameObjectCount ()

void	setLocalFrameSize (int64_t sz)
	setLocalFrameSize - Set the size of the local object blob. More...

int64_t	getLocalFrameSize () const
	getLocalFrameSize - Get the size of the local object blob. More...

void	setLocalFrameMaxAlign (unsigned Align)

unsigned	getLocalFrameMaxAlign () const

bool	getUseLocalStackAllocationBlock ()

void	setUseLocalStackAllocationBlock (bool v)

bool	isObjectPreAllocated (int ObjectIdx) const

int64_t	getObjectSize (int ObjectIdx) const

void	setObjectSize (int ObjectIdx, int64_t Size)
	setObjectSize - Change the size of the specified stack object. More...

unsigned	getObjectAlignment (int ObjectIdx) const
	getObjectAlignment - Return the alignment of the specified stack object. More...

void	setObjectAlignment (int ObjectIdx, unsigned Align)
	setObjectAlignment - Change the alignment of the specified stack object. More...

const AllocaInst *	getObjectAllocation (int ObjectIdx) const

bool	MayNeedStackProtector (int ObjectIdx) const

int64_t	getObjectOffset (int ObjectIdx) const

void	setObjectOffset (int ObjectIdx, int64_t SPOffset)

uint64_t	getStackSize () const

void	setStackSize (uint64_t Size)

unsigned	estimateStackSize (const MachineFunction &MF) const
	Estimate and return the size of the stack frame. More...

int	getOffsetAdjustment () const

void	setOffsetAdjustment (int Adj)

unsigned	getMaxAlignment () const

void	ensureMaxAlignment (unsigned Align)

bool	adjustsStack () const

void	setAdjustsStack (bool V)

bool	hasCalls () const
	hasCalls - Return true if the current function has any function calls. More...

void	setHasCalls (bool V)

unsigned	getMaxCallFrameSize () const

void	setMaxCallFrameSize (unsigned S)

int	CreateFixedObject (uint64_t Size, int64_t SPOffset, bool Immutable)

bool	isFixedObjectIndex (int ObjectIdx) const

bool	isImmutableObjectIndex (int ObjectIdx) const

bool	isSpillSlotObjectIndex (int ObjectIdx) const

bool	isDeadObjectIndex (int ObjectIdx) const

int	CreateStackObject (uint64_t Size, unsigned Alignment, bool isSS, bool MayNeedSP=false, const AllocaInst *Alloca=0)

int	CreateSpillStackObject (uint64_t Size, unsigned Alignment)

void	RemoveStackObject (int ObjectIdx)

int	CreateVariableSizedObject (unsigned Alignment)

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

void	setCalleeSavedInfo (const std::vector< CalleeSavedInfo > &CSI)

bool	isCalleeSavedInfoValid () const
	isCalleeSavedInfoValid - Has the callee saved info been calculated yet? More...

void	setCalleeSavedInfoValid (bool v)

BitVector	getPristineRegs (const MachineBasicBlock *MBB) const

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

void	dump (const MachineFunction &MF) const
	dump - Print the function to stderr. More...

Detailed Description

Abstract Stack Frame Information.

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.

Definition at line 80 of file MachineFrameInfo.h.

Constructor & Destructor Documentation

llvm::MachineFrameInfo::MachineFrameInfo	(	const TargetMachine &	TM,
		bool	RealignOpt
	)

inlineexplicit

Definition at line 228 of file MachineFrameInfo.h.

Member Function Documentation

bool llvm::MachineFrameInfo::adjustsStack ( ) const

inline

AdjustsStack - 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 447 of file MachineFrameInfo.h.

Referenced by llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::Mips16FrameLowering::emitPrologue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::MipsFrameLowering::estimateStackSize(), estimateStackSize(), and llvm::AArch64FrameLowering::processFunctionBeforeCalleeSavedScan().

int MachineFrameInfo::CreateFixedObject	(	uint64_t	Size,
		int64_t	SPOffset,
		bool	Immutable
	)

CreateFixedObject - 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 immutable. This returns an index with a negative value.

Definition at line 544 of file MachineFunction.cpp.

References Align(), clampStackAlignment(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MinAlign(), and Objects.

Referenced by CalculateTailCallArgDest(), EmitTailCallStoreFPAndRetAddr(), EmitTailCallStoreRetAddr(), llvm::MSP430TargetLowering::getReturnAddressFrameIndex(), llvm::X86TargetLowering::getReturnAddressFrameIndex(), llvm::AArch64TargetLowering::LowerCall(), llvm::HexagonTargetLowering::LowerFormalArguments(), llvm::SystemZTargetLowering::LowerFormalArguments(), llvm::SparcTargetLowering::LowerFormalArguments_32(), llvm::SparcTargetLowering::LowerFormalArguments_64(), llvm::XCoreFrameLowering::processFunctionBeforeCalleeSavedScan(), llvm::PPCFrameLowering::processFunctionBeforeCalleeSavedScan(), llvm::X86FrameLowering::processFunctionBeforeCalleeSavedScan(), llvm::MSP430FrameLowering::processFunctionBeforeFrameFinalized(), and llvm::AArch64TargetLowering::SaveVarArgRegisters().

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

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

Definition at line 511 of file MachineFunction.cpp.

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

Referenced by llvm::AArch64TargetLowering::EmitF128CSEL().

int MachineFrameInfo::CreateStackObject	(	uint64_t	Size,
		unsigned	Alignment,
		bool	isSS,
		bool	MayNeedSP = `false`,
		const AllocaInst *	Alloca = `0`
	)

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

Definition at line 492 of file MachineFunction.cpp.

References clampStackAlignment(), ensureMaxAlignment(), and Objects.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), llvm::X86TargetLowering::BuildFILD(), llvm::MipsFunctionInfo::createEhDataRegsFI(), CreateSpillStackObject(), llvm::SelectionDAG::CreateStackTemporary(), llvm::X86TargetLowering::EmitInstrWithCustomInserter(), llvm::SparcTargetLowering::LowerCall_32(), llvm::SelectionDAGBuilder::LowerCallTo(), llvm::SparcTargetLowering::LowerF128_LibCallArg(), llvm::SparcTargetLowering::LowerF128Op(), llvm::MipsSEFrameLowering::processFunctionBeforeCalleeSavedScan(), llvm::XCoreFrameLowering::processFunctionBeforeCalleeSavedScan(), llvm::AArch64FrameLowering::processFunctionBeforeCalleeSavedScan(), llvm::SystemZFrameLowering::processFunctionBeforeFrameFinalized(), llvm::AArch64TargetLowering::SaveVarArgRegisters(), and llvm::FunctionLoweringInfo::set().

int MachineFrameInfo::CreateVariableSizedObject ( unsigned Alignment )

CreateVariableSizedObject - 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 528 of file MachineFunction.cpp.

References clampStackAlignment(), ensureMaxAlignment(), and Objects.

void MachineFrameInfo::dump ( const MachineFunction & MF ) const

dump - Print the function to stderr.

Definition at line 681 of file MachineFunction.cpp.

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

void MachineFrameInfo::ensureMaxAlignment ( unsigned Align )

ensureMaxAlignment - Make sure the function is at least Align bytes aligned.

Definition at line 471 of file MachineFunction.cpp.

References Align().

Referenced by llvm::CCState::AllocateStack(), CreateSpillStackObject(), CreateStackObject(), CreateVariableSizedObject(), llvm::CCState::HandleByVal(), llvm::MachineFunction::MachineFunction(), and setObjectAlignment().

unsigned MachineFrameInfo::estimateStackSize ( const MachineFunction & MF ) const

Estimate and return the size of the stack frame.

Definition at line 595 of file MachineFunction.cpp.

References adjustsStack(), Align(), llvm::TargetMachine::getFrameLowering(), getMaxAlignment(), getMaxCallFrameSize(), getObjectAlignment(), getObjectIndexBegin(), getObjectIndexEnd(), getObjectOffset(), getObjectSize(), llvm::TargetMachine::getRegisterInfo(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFunction::getTarget(), llvm::TargetFrameLowering::getTransientStackAlignment(), llvm::TargetFrameLowering::hasReservedCallFrame(), hasVarSizedObjects(), isDeadObjectIndex(), and llvm::TargetRegisterInfo::needsStackRealignment().

Referenced by llvm::PPCFrameLowering::determineFrameLayout(), llvm::AArch64FrameLowering::processFunctionBeforeCalleeSavedScan(), and llvm::SystemZFrameLowering::processFunctionBeforeFrameFinalized().

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

inline

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

Definition at line 528 of file MachineFrameInfo.h.

Referenced by llvm::AArch64RegisterInfo::eliminateFrameIndex(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::MipsSEFrameLowering::emitEpilogue(), llvm::AArch64FrameLowering::emitEpilogue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::AArch64FrameLowering::emitPrologue(), llvm::SystemZFrameLowering::emitPrologue(), getPristineRegs(), llvm::MipsAsmPrinter::printSavedRegsBitmask(), and llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized().

int llvm::MachineFrameInfo::getFunctionContextIndex ( ) const

inline

getFunctionContextIndex/setFunctionContextIndex - Return the index for the function context object. This object is used for SjLj exceptions.

Definition at line 264 of file MachineFrameInfo.h.

unsigned llvm::MachineFrameInfo::getLocalFrameMaxAlign ( ) const

inline

getLocalFrameMaxAlign - Return the required alignment of the local object blob.

Definition at line 323 of file MachineFrameInfo.h.

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

int64_t llvm::MachineFrameInfo::getLocalFrameObjectCount ( )

inline

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

Definition at line 309 of file MachineFrameInfo.h.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

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

inline

getLocalFrameObjectMap - Get the local offset mapping for a for an object

Definition at line 301 of file MachineFrameInfo.h.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

int64_t llvm::MachineFrameInfo::getLocalFrameSize ( ) const

inline

getLocalFrameSize - Get the size of the local object blob.

Definition at line 315 of file MachineFrameInfo.h.

Referenced by llvm::ARMBaseRegisterInfo::hasBasePointer(), and llvm::ARMBaseRegisterInfo::needsFrameBaseReg().

unsigned llvm::MachineFrameInfo::getMaxAlignment ( ) const

inline

getMaxAlignment - 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 438 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), llvm::PPCFrameLowering::determineFrameLayout(), emitAlignedDPRCS2Spills(), llvm::X86FrameLowering::emitEpilogue(), llvm::XCoreFrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), llvm::MipsFrameLowering::estimateStackSize(), estimateStackSize(), llvm::PPCRegisterInfo::lowerDynamicAlloc(), llvm::PPCRegisterInfo::needsStackRealignment(), llvm::X86RegisterInfo::needsStackRealignment(), and llvm::ARMBaseRegisterInfo::needsStackRealignment().

unsigned llvm::MachineFrameInfo::getMaxCallFrameSize ( ) const

inline

getMaxCallFrameSize - 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 459 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::determineFrameLayout(), llvm::HexagonFrameLowering::emitPrologue(), llvm::MipsFrameLowering::estimateStackSize(), estimateStackSize(), llvm::MipsSEFrameLowering::hasReservedCallFrame(), llvm::Mips16FrameLowering::hasReservedCallFrame(), llvm::Thumb1FrameLowering::hasReservedCallFrame(), llvm::ARMFrameLowering::hasReservedCallFrame(), and llvm::PPCRegisterInfo::lowerDynamicAlloc().

unsigned llvm::MachineFrameInfo::getNumFixedObjects ( ) const

inline

getNumFixedObjects - Return the number of fixed objects.

Definition at line 288 of file MachineFrameInfo.h.

unsigned llvm::MachineFrameInfo::getNumObjects ( ) const

inline

getNumObjects - Return the number of objects.

Definition at line 292 of file MachineFrameInfo.h.

Referenced by llvm::AMDGPUFrameLowering::getFrameIndexOffset(), llvm::AMDGPUInstrInfo::getIndirectIndexBegin(), and llvm::AMDGPUInstrInfo::getIndirectIndexEnd().

unsigned llvm::MachineFrameInfo::getObjectAlignment ( int ObjectIdx ) const

inline

getObjectAlignment - Return the alignment of the specified stack object.

Definition at line 361 of file MachineFrameInfo.h.

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

inline

getObjectAllocation - Return the underlying Alloca of the specified stack object if it exists. Returns 0 if none exists.

Definition at line 377 of file MachineFrameInfo.h.

int llvm::MachineFrameInfo::getObjectIndexBegin ( ) const

inline

getObjectIndexBegin - Return the minimum frame object index.

Definition at line 281 of file MachineFrameInfo.h.

Referenced by llvm::VirtRegMap::assignVirt2StackSlot(), llvm::MipsFrameLowering::estimateStackSize(), estimateStackSize(), llvm::AMDGPUFrameLowering::getFrameIndexOffset(), llvm::X86RegisterInfo::hasReservedSpillSlot(), llvm::X86FrameLowering::processFunctionBeforeCalleeSavedScan(), and llvm::MSP430FrameLowering::processFunctionBeforeFrameFinalized().

int llvm::MachineFrameInfo::getObjectIndexEnd ( ) const

inline

getObjectIndexEnd - Return one past the maximum frame object index.

Definition at line 285 of file MachineFrameInfo.h.

Referenced by llvm::MipsFrameLowering::estimateStackSize(), estimateStackSize(), and INITIALIZE_PASS().

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

inline

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

Definition at line 394 of file MachineFrameInfo.h.

References isDeadObjectIndex().

Referenced by llvm::AArch64TargetLowering::addTokenForArgument(), llvm::SparcRegisterInfo::eliminateFrameIndex(), llvm::MSP430RegisterInfo::eliminateFrameIndex(), llvm::NVPTXRegisterInfo::eliminateFrameIndex(), llvm::XCoreRegisterInfo::eliminateFrameIndex(), llvm::HexagonRegisterInfo::eliminateFrameIndex(), llvm::Thumb1RegisterInfo::eliminateFrameIndex(), llvm::MipsRegisterInfo::eliminateFrameIndex(), llvm::PPCRegisterInfo::eliminateFrameIndex(), llvm::X86RegisterInfo::eliminateFrameIndex(), llvm::X86FrameLowering::emitCalleeSavedFrameMoves(), llvm::XCoreFrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::MipsSEFrameLowering::emitPrologue(), llvm::XCoreFrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::PPCFrameLowering::emitPrologue(), llvm::AArch64FrameLowering::emitPrologue(), llvm::MipsFrameLowering::estimateStackSize(), estimateStackSize(), llvm::TargetInstrInfo::foldMemoryOperand(), llvm::HexagonFrameLowering::getFrameIndexOffset(), llvm::SystemZFrameLowering::getFrameIndexOffset(), llvm::X86FrameLowering::getFrameIndexOffset(), llvm::TargetFrameLowering::getFrameIndexOffset(), llvm::SelectionDAG::isConsecutiveLoad(), isConsecutiveLS(), MatchingStackOffset(), llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized(), llvm::ARMFrameLowering::ResolveFrameIndexReference(), llvm::AArch64FrameLowering::resolveFrameIndexReference(), and llvm::rewriteA64FrameIndex().

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

inline

getObjectSize - Return the size of the specified object.

Definition at line 347 of file MachineFrameInfo.h.

int llvm::MachineFrameInfo::getOffsetAdjustment ( ) const

inline

getOffsetAdjustment - Return the correction for frame offsets.

Definition at line 428 of file MachineFrameInfo.h.

Referenced by llvm::Thumb1FrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::SystemZFrameLowering::getFrameIndexOffset(), and llvm::TargetFrameLowering::getFrameIndexOffset().

BitVector MachineFrameInfo::getPristineRegs ( const MachineBasicBlock * MBB ) const

getPristineRegs - Return a set of physical registers that are pristine on entry to the MBB.

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

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

Definition at line 566 of file MachineFunction.cpp.

References llvm::MachineFunction::front(), getCalleeSavedInfo(), llvm::TargetRegisterInfo::getCalleeSavedRegs(), llvm::MCRegisterInfo::getNumRegs(), llvm::MachineBasicBlock::getParent(), llvm::TargetMachine::getRegisterInfo(), llvm::MachineFunction::getTarget(), I, isCalleeSavedInfoValid(), llvm::BitVector::set(), and llvm::SystemZISD::TM.

Referenced by llvm::RegScavenger::initRegState(), llvm::CriticalAntiDepBreaker::StartBlock(), and llvm::AggressiveAntiDepBreaker::StartBlock().

int llvm::MachineFrameInfo::getStackProtectorIndex ( ) const

inline

getStackProtectorIndex/setStackProtectorIndex - Return the index for the stack protector object.

Definition at line 259 of file MachineFrameInfo.h.

Referenced by llvm::SelectionDAGBuilder::visitSPDescriptorParent().

uint64_t llvm::MachineFrameInfo::getStackSize ( ) const

inline

getStackSize - 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 417 of file MachineFrameInfo.h.

bool llvm::MachineFrameInfo::getUseLocalStackAllocationBlock ( )

inline

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

Definition at line 328 of file MachineFrameInfo.h.

bool llvm::MachineFrameInfo::hasCalls ( ) const

inline

hasCalls - Return true if the current function has any function calls.

Definition at line 451 of file MachineFrameInfo.h.

Referenced by llvm::X86FrameLowering::adjustForHiPEPrologue(), llvm::TargetOptions::DisableFramePointerElim(), llvm::X86FrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitPrologue(), llvm::SystemZFrameLowering::getAllocatedStackSize(), llvm::HexagonFrameLowering::hasFP(), llvm::ARMFrameLowering::hasFP(), llvm::AArch64FrameLowering::hasFP(), llvm::SystemZFrameLowering::processFunctionBeforeCalleeSavedScan(), and llvm::SelectionDAGISel::runOnMachineFunction().

bool llvm::MachineFrameInfo::hasStackObjects ( ) const

inline

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

Definition at line 248 of file MachineFrameInfo.h.

Referenced by llvm::NVPTXFrameLowering::emitPrologue().

bool llvm::MachineFrameInfo::hasVarSizedObjects ( ) const

inline

hasVarSizedObjects - 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 254 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::addScavengingSpillSlot(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), llvm::X86RegisterInfo::canRealignStack(), llvm::ARMFrameLowering::canSimplifyCallFramePseudos(), llvm::PPCFrameLowering::determineFrameLayout(), llvm::HexagonRegisterInfo::eliminateFrameIndex(), llvm::Thumb1RegisterInfo::eliminateFrameIndex(), llvm::ARMBaseRegisterInfo::eliminateFrameIndex(), llvm::MSP430FrameLowering::emitEpilogue(), llvm::PPCFrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitEpilogue(), llvm::AArch64FrameLowering::emitEpilogue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), estimateStackSize(), llvm::SystemZFrameLowering::getAllocatedStackSize(), llvm::AMDGPUInstrInfo::getIndirectIndexEnd(), llvm::X86RegisterInfo::hasBasePointer(), llvm::ARMBaseRegisterInfo::hasBasePointer(), llvm::MipsFrameLowering::hasFP(), llvm::SparcFrameLowering::hasFP(), llvm::XCoreFrameLowering::hasFP(), llvm::ARMFrameLowering::hasFP(), llvm::MSP430FrameLowering::hasFP(), llvm::SystemZFrameLowering::hasFP(), llvm::X86FrameLowering::hasFP(), llvm::AArch64FrameLowering::hasFP(), llvm::MipsSEFrameLowering::hasReservedCallFrame(), llvm::SparcFrameLowering::hasReservedCallFrame(), llvm::Mips16FrameLowering::hasReservedCallFrame(), llvm::Thumb1FrameLowering::hasReservedCallFrame(), llvm::ARMFrameLowering::hasReservedCallFrame(), llvm::MSP430FrameLowering::hasReservedCallFrame(), llvm::X86FrameLowering::hasReservedCallFrame(), llvm::AArch64FrameLowering::hasReservedCallFrame(), llvm::PPCFrameLowering::needsFP(), llvm::ARMBaseRegisterInfo::needsFrameBaseReg(), llvm::AArch64FrameLowering::processFunctionBeforeCalleeSavedScan(), and llvm::AArch64FrameLowering::useFPForAddressing().

bool llvm::MachineFrameInfo::isCalleeSavedInfoValid ( ) const

inline

isCalleeSavedInfoValid - Has the callee saved info been calculated yet?

Definition at line 539 of file MachineFrameInfo.h.

Referenced by getPristineRegs().

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

inline

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

Definition at line 494 of file MachineFrameInfo.h.

Referenced by estimateStackSize(), getObjectOffset(), and setObjectOffset().

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

inline

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

Definition at line 472 of file MachineFrameInfo.h.

Referenced by getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), llvm::FixedStackPseudoSourceValue::isAliased(), LowerAsSplatVectorLoad(), MatchingStackOffset(), and llvm::ARMFrameLowering::ResolveFrameIndexReference().

bool llvm::MachineFrameInfo::isFrameAddressTaken ( ) const

inline

isFrameAddressTaken - 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 270 of file MachineFrameInfo.h.

Referenced by llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), llvm::PPCFrameLowering::emitPrologue(), llvm::MipsFrameLowering::hasFP(), llvm::SparcFrameLowering::hasFP(), llvm::ARMFrameLowering::hasFP(), llvm::MSP430FrameLowering::hasFP(), llvm::X86FrameLowering::hasFP(), and llvm::AArch64FrameLowering::hasFP().

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

inline

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

Definition at line 478 of file MachineFrameInfo.h.

Referenced by llvm::FixedStackPseudoSourceValue::isConstant().

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

inline

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

Definition at line 339 of file MachineFrameInfo.h.

bool llvm::MachineFrameInfo::isReturnAddressTaken ( ) const

inline

isReturnAddressTaken - 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 276 of file MachineFrameInfo.h.

Referenced by llvm::AArch64FrameLowering::determinePrologueDeath(), llvm::Mips16FrameLowering::spillCalleeSavedRegisters(), llvm::MipsSEFrameLowering::spillCalleeSavedRegisters(), and llvm::Thumb1FrameLowering::spillCalleeSavedRegisters().

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

inline

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

Definition at line 486 of file MachineFrameInfo.h.

Referenced by emitComments(), llvm::FixedStackPseudoSourceValue::isAliased(), and llvm::FixedStackPseudoSourceValue::mayAlias().

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

inline

mapLocalFrameObject - Map a frame index into the local object block

Definition at line 295 of file MachineFrameInfo.h.

References llvm::SmallVectorTemplateBase< T, isPodLike >::push_back().

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

inline

NeedsStackProtector - Returns true if the object may need stack protectors.

Definition at line 385 of file MachineFrameInfo.h.

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

print - Used by the MachineFunction printer to print information about stack objects. Implemented in MachineFunction.cpp

Definition at line 644 of file MachineFunction.cpp.

References llvm::TargetMachine::getFrameLowering(), llvm::TargetFrameLowering::getOffsetOfLocalArea(), llvm::MachineFunction::getTarget(), and Objects.

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

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

inline

RemoveStackObject - Remove or mark dead a statically sized stack object.

Definition at line 514 of file MachineFrameInfo.h.

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

inline

Definition at line 448 of file MachineFrameInfo.h.

Referenced by GetTLSADDR().

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

inline

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

Definition at line 534 of file MachineFrameInfo.h.

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

inline

Definition at line 541 of file MachineFrameInfo.h.

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

inline

Definition at line 271 of file MachineFrameInfo.h.

References T.

Referenced by llvm::MSP430TargetLowering::LowerFRAMEADDR(), llvm::HexagonTargetLowering::LowerFRAMEADDR(), llvm::AArch64TargetLowering::LowerFRAMEADDR(), LowerFRAMEADDR(), LowerINTRINSIC_W_CHAIN(), LowerRETURNADDR(), and LowerVASTART().

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

inline

Definition at line 265 of file MachineFrameInfo.h.

References I.

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

inline

Definition at line 452 of file MachineFrameInfo.h.

Referenced by llvm::SparcTargetLowering::LowerGlobalTLSAddress(), llvm::SparcTargetLowering::makeAddress(), and llvm::SelectionDAGISel::runOnMachineFunction().

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

inline

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

Definition at line 319 of file MachineFrameInfo.h.

References Align().

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

inline

setLocalFrameSize - Set the size of the local object blob.

Definition at line 312 of file MachineFrameInfo.h.

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

inline

Definition at line 460 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::determineFrameLayout().

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

inline

setObjectAlignment - Change the alignment of the specified stack object.

Definition at line 368 of file MachineFrameInfo.h.

References Align(), and ensureMaxAlignment().

Referenced by emitAlignedDPRCS2Spills(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), and LowerAsSplatVectorLoad().

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

inline

setObjectOffset - 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 405 of file MachineFrameInfo.h.

References isDeadObjectIndex().

Referenced by AdjustStackOffset(), and llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized().

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

inline

setObjectSize - Change the size of the specified stack object.

Definition at line 354 of file MachineFrameInfo.h.

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

inline

setOffsetAdjustment - Set the correction for frame offsets.

Definition at line 432 of file MachineFrameInfo.h.

Referenced by llvm::MSP430FrameLowering::emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), llvm::ARMFrameLowering::emitPrologue(), llvm::X86FrameLowering::emitPrologue(), and llvm::AArch64FrameLowering::emitPrologue().

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

inline

Definition at line 277 of file MachineFrameInfo.h.

Referenced by LowerINTRINSIC_W_CHAIN(), llvm::MSP430TargetLowering::LowerRETURNADDR(), llvm::HexagonTargetLowering::LowerRETURNADDR(), llvm::AArch64TargetLowering::LowerRETURNADDR(), and LowerRETURNADDR().

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

inline

Definition at line 260 of file MachineFrameInfo.h.

References I.

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

inline

setStackSize - Set the size of the stack...

Definition at line 421 of file MachineFrameInfo.h.

Referenced by llvm::PPCFrameLowering::determineFrameLayout(), llvm::Thumb1FrameLowering::emitPrologue(), and llvm::X86FrameLowering::emitPrologue().

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 333 of file MachineFrameInfo.h.

Referenced by INITIALIZE_PASS().

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

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation