#include "Target/ARM/ARMBaseRegisterInfo.h"

Inheritance diagram for llvm::ARMBaseRegisterInfo:

Public Member Functions
const MCPhysReg *	getCalleeSavedRegs (const MachineFunction *MF) const override
	Code Generation virtual methods...
const MCPhysReg *	getCalleeSavedRegsViaCopy (const MachineFunction *MF) const
const uint32_t *	getCallPreservedMask (const MachineFunction &MF, CallingConv::ID) const override
const uint32_t *	getNoPreservedMask () const override
const uint32_t *	getTLSCallPreservedMask (const MachineFunction &MF) const
const uint32_t *	getSjLjDispatchPreservedMask (const MachineFunction &MF) const
const uint32_t *	getThisReturnPreservedMask (const MachineFunction &MF, CallingConv::ID) const
	getThisReturnPreservedMask - Returns a call preserved mask specific to the case that 'returned' is on an i32 first argument if the calling convention is one that can (partially) model this attribute with a preserved mask (i.e.
ArrayRef< MCPhysReg >	getIntraCallClobberedRegs (const MachineFunction *MF) const override
BitVector	getReservedRegs (const MachineFunction &MF) const override
bool	isAsmClobberable (const MachineFunction &MF, MCRegister PhysReg) const override
bool	isInlineAsmReadOnlyReg (const MachineFunction &MF, MCRegister PhysReg) const override
const TargetRegisterClass *	getPointerRegClass (unsigned Kind=0) const override
const TargetRegisterClass *	getCrossCopyRegClass (const TargetRegisterClass *RC) const override
const TargetRegisterClass *	getLargestLegalSuperClass (const TargetRegisterClass *RC, const MachineFunction &MF) const override
unsigned	getRegPressureLimit (const TargetRegisterClass *RC, MachineFunction &MF) const override
bool	getRegAllocationHints (Register VirtReg, ArrayRef< MCPhysReg > Order, SmallVectorImpl< MCPhysReg > &Hints, const MachineFunction &MF, const VirtRegMap VRM, const LiveRegMatrix Matrix) const override
void	updateRegAllocHint (Register Reg, Register NewReg, MachineFunction &MF) const override
bool	hasBasePointer (const MachineFunction &MF) const
bool	canRealignStack (const MachineFunction &MF) const override
int64_t	getFrameIndexInstrOffset (const MachineInstr *MI, int Idx) const override
bool	needsFrameBaseReg (MachineInstr *MI, int64_t Offset) const override
	needsFrameBaseReg - Returns true if the instruction's frame index reference would be better served by a base register other than FP or SP.
Register	materializeFrameBaseRegister (MachineBasicBlock *MBB, int FrameIdx, int64_t Offset) const override
	materializeFrameBaseRegister - Insert defining instruction(s) for BaseReg to be a pointer to FrameIdx at the beginning of the basic block.
void	resolveFrameIndex (MachineInstr &MI, Register BaseReg, int64_t Offset) const override
bool	isFrameOffsetLegal (const MachineInstr *MI, Register BaseReg, int64_t Offset) const override
bool	cannotEliminateFrame (const MachineFunction &MF) const
Register	getFrameRegister (const MachineFunction &MF) const override
unsigned	getLocalAddressRegister (const MachineFunction &MF) const
Register	getBaseRegister () const
virtual void	emitLoadConstPool (MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI, const DebugLoc &dl, Register DestReg, unsigned SubIdx, int Val, ARMCC::CondCodes Pred=ARMCC::AL, Register PredReg=Register(), unsigned MIFlags=MachineInstr::NoFlags) const
	emitLoadConstPool - Emits a load from constpool to materialize the specified immediate.
bool	requiresRegisterScavenging (const MachineFunction &MF) const override
	Code Generation virtual methods...
bool	requiresFrameIndexScavenging (const MachineFunction &MF) const override
bool	requiresVirtualBaseRegisters (const MachineFunction &MF) const override
bool	eliminateFrameIndex (MachineBasicBlock::iterator II, int SPAdj, unsigned FIOperandNum, RegScavenger *RS=nullptr) const override
bool	shouldCoalesce (MachineInstr MI, const TargetRegisterClass SrcRC, unsigned SubReg, const TargetRegisterClass DstRC, unsigned DstSubReg, const TargetRegisterClass NewRC, LiveIntervals &LIS) const override
	SrcRC and DstRC will be morphed into NewRC if this returns true.
int	getSEHRegNum (unsigned i) const

Protected Member Functions
	ARMBaseRegisterInfo ()

Protected Attributes
unsigned	BasePtr = ARM::R6
	BasePtr - ARM physical register used as a base ptr in complex stack frames.

Detailed Description

Definition at line 52 of file ARMBaseRegisterInfo.h.

Constructor & Destructor Documentation

◆ ARMBaseRegisterInfo()

ARMBaseRegisterInfo::ARMBaseRegisterInfo ( )

explicitprotected

Definition at line 56 of file ARMBaseRegisterInfo.cpp.

References llvm::ARM_MC::initLLVMToCVRegMapping().

Member Function Documentation

◆ cannotEliminateFrame()

bool ARMBaseRegisterInfo::cannotEliminateFrame ( const MachineFunction & MF ) const

Definition at line 509 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineFrameInfo::adjustsStack(), llvm::MachineFunction::disableFramePointerElim(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFrameInfo::hasVarSizedObjects(), and llvm::MachineFrameInfo::isFrameAddressTaken().

◆ canRealignStack()

bool ARMBaseRegisterInfo::canRealignStack ( const MachineFunction & MF ) const

override

Definition at line 487 of file ARMBaseRegisterInfo.cpp.

References BasePtr, llvm::TargetRegisterInfo::canRealignStack(), llvm::MachineRegisterInfo::canReserveReg(), llvm::ARMSubtarget::getFramePointerReg(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), and llvm::ARMFrameLowering::hasReservedCallFrame().

Referenced by checkNumAlignedDPRCS2Regs(), and needsFrameBaseReg().

◆ eliminateFrameIndex()

bool ARMBaseRegisterInfo::eliminateFrameIndex	(	MachineBasicBlock::iterator	II,
		int	SPAdj,
		unsigned	FIOperandNum,
		RegScavenger *	RS = nullptr ) const

override

Definition at line 834 of file ARMBaseRegisterInfo.cpp.

References llvm::ARMII::AddrMode4, llvm::ARMII::AddrMode6, llvm::ARMII::AddrModeMask, llvm::ARMII::AddrModeT2_i7, llvm::ARMII::AddrModeT2_i7s2, llvm::ARMII::AddrModeT2_i7s4, llvm::ARMCC::AL, assert(), llvm::MachineOperand::ChangeToImmediate(), llvm::MCRegisterClass::contains(), llvm::MachineRegisterInfo::createVirtualRegister(), llvm::Done, llvm::emitARMRegPlusImmediate(), llvm::emitT2RegPlusImmediate(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::ARMFrameLowering::getNonLocalFrameIndexReference(), llvm::MachineFunction::getRegInfo(), llvm::MachineFunction::getSubtarget(), llvm::ARMFrameLowering::hasReservedCallFrame(), llvm::MachineFrameInfo::hasVarSizedObjects(), II, llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumb2Function(), llvm::ARMFunctionInfo::isThumbFunction(), llvm::Register::isVirtual(), MBB, MI, llvm::Offset, Register, llvm::ARMFrameLowering::ResolveFrameIndexReference(), llvm::rewriteARMFrameIndex(), llvm::rewriteT2FrameIndex(), and TII.

Referenced by llvm::ThumbRegisterInfo::eliminateFrameIndex().

◆ emitLoadConstPool()

void ARMBaseRegisterInfo::emitLoadConstPool	(	MachineBasicBlock &	MBB,
		MachineBasicBlock::iterator &	MBBI,
		const DebugLoc &	dl,
		Register	DestReg,
		unsigned	SubIdx,
		int	Val,
		ARMCC::CondCodes	Pred = ARMCC::AL,
		Register	PredReg = Register(),
		unsigned	MIFlags = MachineInstr::NoFlags ) const

virtual

emitLoadConstPool - Emits a load from constpool to materialize the specified immediate.

Reimplemented in llvm::ThumbRegisterInfo.

Definition at line 540 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addConstantPoolIndex(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), C(), llvm::MachineFunction::getConstantPool(), llvm::Function::getContext(), llvm::getDefRegState(), llvm::MachineFunction::getFunction(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::Type::getInt32Ty(), llvm::MachineFunction::getSubtarget(), MBB, MBBI, llvm::predOps(), llvm::MachineInstrBuilder::setMIFlags(), and TII.

Referenced by emitThumbRegPlusImmInReg().

◆ getBaseRegister()

Register llvm::ARMBaseRegisterInfo::getBaseRegister ( ) const

inline

Definition at line 131 of file ARMBaseRegisterInfo.h.

References BasePtr.

Referenced by getLocalAddressRegister().

◆ getCalleeSavedRegs()

const MCPhysReg * ARMBaseRegisterInfo::getCalleeSavedRegs ( const MachineFunction * MF ) const

override

Code Generation virtual methods...

Definition at line 62 of file ARMBaseRegisterInfo.cpp.

References assert(), llvm::CallingConv::CFGuard_Check, llvm::CallingConv::CXX_FAST_TLS, F, llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::ARMSubtarget::getPushPopSplitVariation(), llvm::MachineFunction::getSubtarget(), llvm::ARMSubtarget::getTargetLowering(), llvm::CallingConv::GHC, llvm::ARMSubtarget::isMClass(), llvm::ARMSubtarget::isTargetDarwin(), llvm::ARMSubtarget::SplitR11AAPCSSignRA, llvm::ARMSubtarget::SplitR11WindowsSEH, llvm::ARMSubtarget::SplitR7, llvm::ARMTargetLowering::supportSwiftError(), and llvm::CallingConv::SwiftTail.

◆ getCalleeSavedRegsViaCopy()

const MCPhysReg * ARMBaseRegisterInfo::getCalleeSavedRegsViaCopy ( const MachineFunction * MF ) const

Definition at line 146 of file ARMBaseRegisterInfo.cpp.

References assert(), llvm::CallingConv::CXX_FAST_TLS, llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), and llvm::ARMFunctionInfo::isSplitCSR().

◆ getCallPreservedMask()

const uint32_t * ARMBaseRegisterInfo::getCallPreservedMask	(	const MachineFunction &	MF,
		CallingConv::ID	CC ) const

override

Definition at line 156 of file ARMBaseRegisterInfo.cpp.

References llvm::CallingConv::CFGuard_Check, llvm::CallingConv::CXX_FAST_TLS, llvm::Function::getAttributes(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getSubtarget(), llvm::ARMSubtarget::getTargetLowering(), llvm::CallingConv::GHC, llvm::ARMSubtarget::isTargetDarwin(), llvm::ARMTargetLowering::supportSwiftError(), and llvm::CallingConv::SwiftTail.

◆ getCrossCopyRegClass()

const TargetRegisterClass * ARMBaseRegisterInfo::getCrossCopyRegClass ( const TargetRegisterClass * RC ) const

override

Definition at line 318 of file ARMBaseRegisterInfo.cpp.

◆ getFrameIndexInstrOffset()

int64_t ARMBaseRegisterInfo::getFrameIndexInstrOffset	(	const MachineInstr *	MI,
		int	Idx ) const

override

◆ getFrameRegister()

Register ARMBaseRegisterInfo::getFrameRegister ( const MachineFunction & MF ) const

override

Definition at line 519 of file ARMBaseRegisterInfo.cpp.

References llvm::ARMSubtarget::getFramePointerReg(), and llvm::MachineFunction::getSubtarget().

Referenced by getLocalAddressRegister(), and needsFrameBaseReg().

◆ getIntraCallClobberedRegs()

ArrayRef< MCPhysReg > ARMBaseRegisterInfo::getIntraCallClobberedRegs ( const MachineFunction * MF ) const

override

Definition at line 218 of file ARMBaseRegisterInfo.cpp.

References llvm::ArrayRef().

◆ getLargestLegalSuperClass()

const TargetRegisterClass * ARMBaseRegisterInfo::getLargestLegalSuperClass	(	const TargetRegisterClass *	RC,
		const MachineFunction &	MF ) const

override

Definition at line 282 of file ARMBaseRegisterInfo.cpp.

References llvm::ArrayRef< T >::begin(), llvm::ArrayRef< T >::end(), llvm::MCRegisterClass::getID(), getRegClass(), llvm::MachineFunction::getSubtarget(), I, and llvm::MCRegisterClass::superclasses().

Referenced by llvm::ThumbRegisterInfo::getLargestLegalSuperClass().

◆ getLocalAddressRegister()

unsigned ARMBaseRegisterInfo::getLocalAddressRegister ( const MachineFunction & MF ) const

Definition at line 529 of file ARMBaseRegisterInfo.cpp.

References getBaseRegister(), llvm::MachineFunction::getFrameInfo(), getFrameRegister(), and llvm::MachineFunction::hasEHFunclets().

◆ getNoPreservedMask()

const uint32_t * ARMBaseRegisterInfo::getNoPreservedMask ( ) const

override

Definition at line 179 of file ARMBaseRegisterInfo.cpp.

◆ getPointerRegClass()

const TargetRegisterClass * ARMBaseRegisterInfo::getPointerRegClass ( unsigned Kind = 0 ) const

override

Definition at line 313 of file ARMBaseRegisterInfo.cpp.

Referenced by llvm::ThumbRegisterInfo::getPointerRegClass().

◆ getRegAllocationHints()

bool ARMBaseRegisterInfo::getRegAllocationHints	(	Register	VirtReg,
		ArrayRef< MCPhysReg >	Order,
		SmallVectorImpl< MCPhysReg > &	Hints,
		const MachineFunction &	MF,
		const VirtRegMap *	VRM,
		const LiveRegMatrix *	Matrix ) const

override

Definition at line 364 of file ARMBaseRegisterInfo.cpp.

References llvm::MCRegisterClass::contains(), getPairedGPR(), llvm::VirtRegMap::getPhys(), llvm::MachineRegisterInfo::getRegAllocationHint(), llvm::TargetRegisterInfo::getRegAllocationHints(), llvm::MachineRegisterInfo::getRegClass(), llvm::MachineFunction::getRegInfo(), llvm::VirtRegMap::hasPhys(), llvm::is_contained(), llvm::Register::isPhysical(), llvm::MachineRegisterInfo::isReserved(), Matrix, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::ARMRI::RegLR, llvm::ARMRI::RegPairEven, and llvm::ARMRI::RegPairOdd.

◆ getRegPressureLimit()

unsigned ARMBaseRegisterInfo::getRegPressureLimit	(	const TargetRegisterClass *	RC,
		MachineFunction &	MF ) const

override

Definition at line 327 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineFunction::getFrameInfo(), llvm::MCRegisterClass::getID(), llvm::MachineFunction::getSubtarget(), llvm::MachineFrameInfo::isMaxCallFrameSizeComputed(), and llvm::ARMSubtarget::isR9Reserved().

◆ getReservedRegs()

BitVector ARMBaseRegisterInfo::getReservedRegs ( const MachineFunction & MF ) const

override

Definition at line 224 of file ARMBaseRegisterInfo.cpp.

References assert(), BasePtr, llvm::ARM::D16, llvm::ARMSubtarget::getFramePointerReg(), llvm::MachineFunction::getSubtarget(), hasBasePointer(), llvm::ARMSubtarget::isR9Reserved(), and llvm::Reserved.

Referenced by isAsmClobberable().

◆ getSEHRegNum()

int llvm::ARMBaseRegisterInfo::getSEHRegNum ( unsigned i ) const

inline

Definition at line 162 of file ARMBaseRegisterInfo.h.

◆ getSjLjDispatchPreservedMask()

const uint32_t * ARMBaseRegisterInfo::getSjLjDispatchPreservedMask ( const MachineFunction & MF ) const

Definition at line 191 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineFunction::getSubtarget(), llvm::ARMSubtarget::hasVFP2Base(), and llvm::ARMSubtarget::isThumb1Only().

◆ getThisReturnPreservedMask()

const uint32_t * ARMBaseRegisterInfo::getThisReturnPreservedMask	(	const MachineFunction &	MF,
		CallingConv::ID	CC ) const

getThisReturnPreservedMask - Returns a call preserved mask specific to the case that 'returned' is on an i32 first argument if the calling convention is one that can (partially) model this attribute with a preserved mask (i.e.

it is a calling convention that uses the same register for the first i32 argument and an i32 return value)

Should return NULL in the case that the calling convention does not have this property

Definition at line 200 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineFunction::getSubtarget(), llvm::CallingConv::GHC, and llvm::ARMSubtarget::isTargetDarwin().

◆ getTLSCallPreservedMask()

const uint32_t * ARMBaseRegisterInfo::getTLSCallPreservedMask ( const MachineFunction & MF ) const

Definition at line 184 of file ARMBaseRegisterInfo.cpp.

References assert(), llvm::MachineFunction::getSubtarget(), and llvm::ARMSubtarget::isTargetDarwin().

◆ hasBasePointer()

bool ARMBaseRegisterInfo::hasBasePointer ( const MachineFunction & MF ) const

Definition at line 444 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getInfo(), llvm::MachineFrameInfo::getLocalFrameSize(), llvm::MachineFunction::hasEHFunclets(), llvm::MachineFrameInfo::hasVarSizedObjects(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), and llvm::ARMFunctionInfo::isThumb2Function().

Referenced by getReservedRegs(), and isInlineAsmReadOnlyReg().

◆ isAsmClobberable()

bool ARMBaseRegisterInfo::isAsmClobberable	(	const MachineFunction &	MF,
		MCRegister	PhysReg ) const

override

Definition at line 261 of file ARMBaseRegisterInfo.cpp.

References getReservedRegs(), and llvm::BitVector::test().

◆ isFrameOffsetLegal()

bool ARMBaseRegisterInfo::isFrameOffsetLegal	(	const MachineInstr *	MI,
		Register	BaseReg,
		int64_t	Offset ) const

override

◆ isInlineAsmReadOnlyReg()

bool ARMBaseRegisterInfo::isInlineAsmReadOnlyReg	(	const MachineFunction &	MF,
		MCRegister	PhysReg ) const

override

Definition at line 266 of file ARMBaseRegisterInfo.cpp.

References assert(), BasePtr, llvm::ARMSubtarget::getFramePointerReg(), llvm::MachineFunction::getSubtarget(), hasBasePointer(), llvm::MCRegister::id(), and llvm::Reserved.

◆ materializeFrameBaseRegister()

Register ARMBaseRegisterInfo::materializeFrameBaseRegister	(	MachineBasicBlock *	MBB,
		int	FrameIdx,
		int64_t	Offset ) const

override

materializeFrameBaseRegister - Insert defining instruction(s) for BaseReg to be a pointer to FrameIdx at the beginning of the basic block.

Definition at line 709 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addFrameIndex(), llvm::MachineInstrBuilder::addImm(), llvm::ARMCC::AL, llvm::BuildMI(), llvm::condCodeOp(), llvm::MachineRegisterInfo::constrainRegClass(), llvm::MachineRegisterInfo::createVirtualRegister(), DL, llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineFunction::getSubtarget(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumbFunction(), MBB, llvm::Offset, llvm::predOps(), and TII.

◆ needsFrameBaseReg()

bool ARMBaseRegisterInfo::needsFrameBaseReg	(	MachineInstr *	MI,
		int64_t	Offset ) const

override

needsFrameBaseReg - Returns true if the instruction's frame index reference would be better served by a base register other than FP or SP.

Used by LocalStackFrameAllocation to determine which frame index references it should create new base registers for.

Definition at line 627 of file ARMBaseRegisterInfo.cpp.

References assert(), canRealignStack(), llvm::MachineFunction::getFrameInfo(), getFrameRegister(), llvm::MachineFunction::getInfo(), llvm::MachineFrameInfo::getLocalFrameMaxAlign(), llvm::MachineFrameInfo::getLocalFrameSize(), llvm::TargetFrameLowering::getStackAlign(), llvm::TargetFrameLowering::hasFP(), llvm::MachineFrameInfo::hasVarSizedObjects(), isFrameOffsetLegal(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumbFunction(), MI, llvm::Offset, and Opc.

◆ requiresFrameIndexScavenging()

bool ARMBaseRegisterInfo::requiresFrameIndexScavenging ( const MachineFunction & MF ) const

override

Definition at line 564 of file ARMBaseRegisterInfo.cpp.

◆ requiresRegisterScavenging()

bool ARMBaseRegisterInfo::requiresRegisterScavenging ( const MachineFunction & MF ) const

override

Code Generation virtual methods...

Definition at line 559 of file ARMBaseRegisterInfo.cpp.

◆ requiresVirtualBaseRegisters()

bool ARMBaseRegisterInfo::requiresVirtualBaseRegisters ( const MachineFunction & MF ) const

override

Definition at line 569 of file ARMBaseRegisterInfo.cpp.

◆ resolveFrameIndex()

void ARMBaseRegisterInfo::resolveFrameIndex	(	MachineInstr &	MI,
		Register	BaseReg,
		int64_t	Offset ) const

override

Definition at line 737 of file ARMBaseRegisterInfo.cpp.

References assert(), llvm::Done, llvm::MachineFunction::getInfo(), llvm::MachineFunction::getSubtarget(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumb2Function(), llvm::ARMFunctionInfo::isThumbFunction(), MBB, MI, llvm::Offset, llvm::rewriteARMFrameIndex(), llvm::rewriteT2FrameIndex(), and TII.

Referenced by llvm::ThumbRegisterInfo::resolveFrameIndex().

◆ shouldCoalesce()

bool ARMBaseRegisterInfo::shouldCoalesce	(	MachineInstr *	MI,
		const TargetRegisterClass *	SrcRC,
		unsigned	SubReg,
		const TargetRegisterClass *	DstRC,
		unsigned	DstSubReg,
		const TargetRegisterClass *	NewRC,
		LiveIntervals &	LIS ) const

override

SrcRC and DstRC will be morphed into NewRC if this returns true.

Definition at line 927 of file ARMBaseRegisterInfo.cpp.

References llvm::dbgs(), llvm::ARMFunctionInfo::getCoalescedWeight(), llvm::TargetRegisterInfo::getRegClassWeight(), llvm::MachineRegisterInfo::getTargetRegisterInfo(), LLVM_DEBUG, MBB, and MI.

◆ updateRegAllocHint()

void ARMBaseRegisterInfo::updateRegAllocHint	(	Register	Reg,
		Register	NewReg,
		MachineFunction &	MF ) const

override

Definition at line 419 of file ARMBaseRegisterInfo.cpp.

References llvm::MachineRegisterInfo::getRegAllocationHint(), llvm::MachineFunction::getRegInfo(), llvm::Register::isVirtual(), llvm::ARMRI::RegPairEven, llvm::ARMRI::RegPairOdd, and llvm::MachineRegisterInfo::setRegAllocationHint().

Member Data Documentation

◆ BasePtr

unsigned llvm::ARMBaseRegisterInfo::BasePtr = ARM::R6

protected

BasePtr - ARM physical register used as a base ptr in complex stack frames.

I.e., when we need a 3rd base, not just SP and FP, due to variable size stack objects.

Definition at line 57 of file ARMBaseRegisterInfo.h.

Referenced by canRealignStack(), getBaseRegister(), getReservedRegs(), and isInlineAsmReadOnlyReg().

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

lib/Target/ARM/ARMBaseRegisterInfo.h
lib/Target/ARM/ARMBaseRegisterInfo.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ARMBaseRegisterInfo()

Member Function Documentation

◆ cannotEliminateFrame()

◆ canRealignStack()

◆ eliminateFrameIndex()

◆ emitLoadConstPool()

◆ getBaseRegister()

◆ getCalleeSavedRegs()

◆ getCalleeSavedRegsViaCopy()

◆ getCallPreservedMask()

◆ getCrossCopyRegClass()

◆ getFrameIndexInstrOffset()

◆ getFrameRegister()

◆ getIntraCallClobberedRegs()

◆ getLargestLegalSuperClass()

◆ getLocalAddressRegister()

◆ getNoPreservedMask()

◆ getPointerRegClass()

◆ getRegAllocationHints()

◆ getRegPressureLimit()

◆ getReservedRegs()

◆ getSEHRegNum()

◆ getSjLjDispatchPreservedMask()

◆ getThisReturnPreservedMask()

◆ getTLSCallPreservedMask()

◆ hasBasePointer()

◆ isAsmClobberable()

◆ isFrameOffsetLegal()

◆ isInlineAsmReadOnlyReg()

◆ materializeFrameBaseRegister()

◆ needsFrameBaseReg()

◆ requiresFrameIndexScavenging()

◆ requiresRegisterScavenging()

◆ requiresVirtualBaseRegisters()

◆ resolveFrameIndex()

◆ shouldCoalesce()

◆ updateRegAllocHint()

Member Data Documentation

◆ BasePtr