#include "Target/AArch64/AArch64RegisterInfo.h"

Inheritance diagram for llvm::AArch64RegisterInfo:

Collaboration diagram for llvm::AArch64RegisterInfo:

Public Member Functions
	AArch64RegisterInfo (const Triple &TT)

int	getSEHRegNum (unsigned i) const

bool	isReservedReg (const MachineFunction &MF, unsigned Reg) const

bool	isAnyArgRegReserved (const MachineFunction &MF) const

void	emitReservedArgRegCallError (const MachineFunction &MF) const

void	UpdateCustomCalleeSavedRegs (MachineFunction &MF) const

void	UpdateCustomCallPreservedMask (MachineFunction &MF, const uint32_t **Mask) const

const MCPhysReg *	getCalleeSavedRegs (const MachineFunction *MF) const override
	Code Generation virtual methods... More...

const MCPhysReg *	getCalleeSavedRegsViaCopy (const MachineFunction *MF) const

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

unsigned	getCSRFirstUseCost () const override

const TargetRegisterClass *	getSubClassWithSubReg (const TargetRegisterClass *RC, unsigned Idx) const override

const uint32_t *	getTLSCallPreservedMask () const

const uint32_t *	getNoPreservedMask () const override

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 i64 first argument if the calling convention is one that can (partially) model this attribute with a preserved mask (i.e. More...

const uint32_t *	getWindowsStackProbePreservedMask () const
	Stack probing calls preserve different CSRs to the normal CC. More...

BitVector	getReservedRegs (const MachineFunction &MF) const override

bool	isAsmClobberable (const MachineFunction &MF, unsigned PhysReg) const override

bool	isConstantPhysReg (unsigned PhysReg) const override

const TargetRegisterClass *	getPointerRegClass (const MachineFunction &MF, unsigned Kind=0) const override

const TargetRegisterClass *	getCrossCopyRegClass (const TargetRegisterClass *RC) const override

bool	requiresRegisterScavenging (const MachineFunction &MF) const override

bool	useFPForScavengingIndex (const MachineFunction &MF) const override

bool	requiresFrameIndexScavenging (const MachineFunction &MF) 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. More...

bool	isFrameOffsetLegal (const MachineInstr *MI, unsigned BaseReg, int64_t Offset) const override

void	materializeFrameBaseRegister (MachineBasicBlock *MBB, unsigned BaseReg, int FrameIdx, int64_t Offset) const override
	Insert defining instruction(s) for BaseReg to be a pointer to FrameIdx at the beginning of the basic block. More...

void	resolveFrameIndex (MachineInstr &MI, unsigned BaseReg, int64_t Offset) const override

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

bool	cannotEliminateFrame (const MachineFunction &MF) const

bool	requiresVirtualBaseRegisters (const MachineFunction &MF) const override

bool	hasBasePointer (const MachineFunction &MF) const

unsigned	getBaseRegister () const

unsigned	getFrameRegister (const MachineFunction &MF) const override

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

bool	trackLivenessAfterRegAlloc (const MachineFunction &) const override

Detailed Description

Definition at line 27 of file AArch64RegisterInfo.h.

Constructor & Destructor Documentation

◆ AArch64RegisterInfo()

AArch64RegisterInfo::AArch64RegisterInfo ( const Triple & TT )

Definition at line 38 of file AArch64RegisterInfo.cpp.

References llvm::AArch64_MC::initLLVMToCVRegMapping().

Member Function Documentation

◆ cannotEliminateFrame()

bool AArch64RegisterInfo::cannotEliminateFrame ( const MachineFunction & MF ) const

Definition at line 319 of file AArch64RegisterInfo.cpp.

References llvm::MachineFrameInfo::adjustsStack(), llvm::TargetOptions::DisableFramePointerElim(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getTarget(), llvm::MachineFrameInfo::hasVarSizedObjects(), llvm::MachineFrameInfo::isFrameAddressTaken(), and llvm::TargetMachine::Options.

Referenced by llvm::AArch64FrameLowering::determineCalleeSaves(), and getCSRFirstUseCost().

◆ eliminateFrameIndex()

void AArch64RegisterInfo::eliminateFrameIndex	(	MachineBasicBlock::iterator	II,
		int	SPAdj,
		unsigned	FIOperandNum,
		RegScavenger *	RS = `nullptr`
	)		const

override

◆ emitReservedArgRegCallError()

void AArch64RegisterInfo::emitReservedArgRegCallError ( const MachineFunction & MF ) const

Definition at line 228 of file AArch64RegisterInfo.cpp.

References llvm::LLVMContext::diagnose(), F(), llvm::Function::getContext(), and llvm::MachineFunction::getFunction().

Referenced by getCompareCC(), getSEHRegNum(), and mayTailCallThisCC().

◆ getBaseRegister()

unsigned AArch64RegisterInfo::getBaseRegister ( ) const

Definition at line 257 of file AArch64RegisterInfo.cpp.

Referenced by llvm::AArch64FrameLowering::determineCalleeSaves(), getCSRFirstUseCost(), LowerMUL(), and llvm::AArch64FrameLowering::resolveFrameIndexReference().

◆ getCalleeSavedRegs()

const MCPhysReg * AArch64RegisterInfo::getCalleeSavedRegs ( const MachineFunction * MF ) const

override

◆ getCalleeSavedRegsViaCopy()

const MCPhysReg * AArch64RegisterInfo::getCalleeSavedRegsViaCopy ( const MachineFunction * MF ) const

Definition at line 71 of file AArch64RegisterInfo.cpp.

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

Referenced by getSEHRegNum(), llvm::AArch64TargetLowering::insertCopiesSplitCSR(), and mayTailCallThisCC().

◆ getCallPreservedMask()

const uint32_t * AArch64RegisterInfo::getCallPreservedMask	(	const MachineFunction &	MF,
		CallingConv::ID	CC
	)		const

override

Definition at line 111 of file AArch64RegisterInfo.cpp.

References llvm::CallingConv::AArch64_VectorCall, llvm::CallingConv::AnyReg, llvm::CallingConv::CXX_FAST_TLS, llvm::Function::getAttributes(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getSubtarget(), llvm::AArch64Subtarget::getTargetLowering(), llvm::CallingConv::GHC, llvm::AttributeList::hasAttrSomewhere(), llvm::Function::hasFnAttribute(), llvm::CallingConv::PreserveMost, llvm::Attribute::ShadowCallStack, llvm::AArch64TargetLowering::supportSwiftError(), and llvm::Attribute::SwiftError.

Referenced by getSEHRegNum(), and mayTailCallThisCC().

◆ getCrossCopyRegClass()

const TargetRegisterClass * AArch64RegisterInfo::getCrossCopyRegClass ( const TargetRegisterClass * RC ) const

override

Definition at line 251 of file AArch64RegisterInfo.cpp.

Referenced by getCSRFirstUseCost().

◆ getCSRFirstUseCost()

unsigned llvm::AArch64RegisterInfo::getCSRFirstUseCost ( ) const

inlineoverride

◆ getFrameRegister()

unsigned AArch64RegisterInfo::getFrameRegister ( const MachineFunction & MF ) const

override

Definition at line 287 of file AArch64RegisterInfo.cpp.

References llvm::AArch64FrameLowering::hasFP().

Referenced by getCSRFirstUseCost(), LowerMUL(), and llvm::AArch64FrameLowering::resolveFrameIndexReference().

◆ getNoPreservedMask()

const uint32_t * AArch64RegisterInfo::getNoPreservedMask ( ) const

override

Definition at line 164 of file AArch64RegisterInfo.cpp.

Referenced by getCSRFirstUseCost().

◆ getPointerRegClass()

const TargetRegisterClass * AArch64RegisterInfo::getPointerRegClass	(	const MachineFunction &	MF,
		unsigned	Kind = `0`
	)		const

override

Definition at line 245 of file AArch64RegisterInfo.cpp.

Referenced by getCSRFirstUseCost().

◆ getRegPressureLimit()

unsigned AArch64RegisterInfo::getRegPressureLimit	(	const TargetRegisterClass *	RC,
		MachineFunction &	MF
	)		const

override

Definition at line 491 of file AArch64RegisterInfo.cpp.

References llvm::TargetRegisterClass::getID(), llvm::AArch64Subtarget::getNumXRegisterReserved(), llvm::MachineFunction::getSubtarget(), hasBasePointer(), llvm::AArch64FrameLowering::hasFP(), and llvm::Triple::isOSDarwin().

Referenced by getCSRFirstUseCost().

◆ getReservedRegs()

BitVector AArch64RegisterInfo::getReservedRegs ( const MachineFunction & MF ) const

override

Definition at line 187 of file AArch64RegisterInfo.cpp.

References assert(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getSubtarget(), hasBasePointer(), llvm::Function::hasFnAttribute(), llvm::AArch64FrameLowering::hasFP(), llvm::Triple::isOSDarwin(), llvm::AArch64Subtarget::isXRegisterReserved(), and llvm::Attribute::SpeculativeLoadHardening.

Referenced by getCSRFirstUseCost(), and isReservedReg().

◆ getSEHRegNum()

int llvm::AArch64RegisterInfo::getSEHRegNum ( unsigned i ) const

inline

Definition at line 34 of file AArch64RegisterInfo.h.

References emitReservedArgRegCallError(), getCalleeSavedRegs(), getCalleeSavedRegsViaCopy(), getCallPreservedMask(), isAnyArgRegReserved(), isReservedReg(), llvm::BitmaskEnumDetail::Mask(), Reg, UpdateCustomCalleeSavedRegs(), and UpdateCustomCallPreservedMask().

◆ getSubClassWithSubReg()

const TargetRegisterClass * AArch64RegisterInfo::getSubClassWithSubReg	(	const TargetRegisterClass *	RC,
		unsigned	Idx
	)		const

override

Definition at line 98 of file AArch64RegisterInfo.cpp.

Referenced by getCSRFirstUseCost().

◆ getThisReturnPreservedMask()

const uint32_t * AArch64RegisterInfo::getThisReturnPreservedMask	(	const MachineFunction &	MF,
		CallingConv::ID	CC
	)		const

getThisReturnPreservedMask - Returns a call preserved mask specific to the case that 'returned' is on an i64 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 i64 argument and an i64 return value)

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

Definition at line 169 of file AArch64RegisterInfo.cpp.

References assert(), and llvm::CallingConv::GHC.

Referenced by getCSRFirstUseCost(), and mayTailCallThisCC().