#include "llvm/CodeGen/VirtRegMap.h"

Public Member Functions
	VirtRegMap ()

	VirtRegMap (const VirtRegMap &)=delete

VirtRegMap &	operator= (const VirtRegMap &)=delete

	VirtRegMap (VirtRegMap &&)=default

void	init (MachineFunction &MF)

MachineFunction &	getMachineFunction () const

MachineRegisterInfo &	getRegInfo () const

const TargetRegisterInfo &	getTargetRegInfo () const

void	grow ()

bool	hasPhys (Register virtReg) const
	returns true if the specified virtual register is mapped to a physical register

MCRegister	getPhys (Register virtReg) const
	returns the physical register mapped to the specified virtual register

void	assignVirt2Phys (Register virtReg, MCPhysReg physReg)
	creates a mapping for the specified virtual register to the specified physical register

bool	isShapeMapEmpty () const

bool	hasShape (Register virtReg) const

ShapeT	getShape (Register virtReg) const

void	assignVirt2Shape (Register virtReg, ShapeT shape)

void	clearVirt (Register virtReg)
	clears the specified virtual register's, physical register mapping

void	clearAllVirt ()
	clears all virtual to physical register mappings

bool	hasPreferredPhys (Register VirtReg) const
	returns true if VirtReg is assigned to its preferred physreg.

bool	hasKnownPreference (Register VirtReg) const
	returns true if VirtReg has a known preferred register.

void	setIsSplitFromReg (Register virtReg, Register SReg)
	records virtReg is a split live interval from SReg.

Register	getPreSplitReg (Register virtReg) const
	returns the live interval virtReg is split from.

Register	getOriginal (Register VirtReg) const
	getOriginal - Return the original virtual register that VirtReg descends from through splitting.

bool	isAssignedReg (Register virtReg) const
	returns true if the specified virtual register is not mapped to a stack slot or rematerialized.

int	getStackSlot (Register virtReg) const
	returns the stack slot mapped to the specified virtual register

int	assignVirt2StackSlot (Register virtReg)
	create a mapping for the specifed virtual register to the next available stack slot

void	assignVirt2StackSlot (Register virtReg, int SS)
	create a mapping for the specified virtual register to the specified stack slot

void	print (raw_ostream &OS, const Module *M=nullptr) const

void	dump () const

Static Public Attributes
static constexpr int	NO_STACK_SLOT = INT_MAX

Detailed Description

Definition at line 34 of file VirtRegMap.h.

Constructor & Destructor Documentation

◆ VirtRegMap() [1/3]

llvm::VirtRegMap::VirtRegMap ( )

inline

Definition at line 67 of file VirtRegMap.h.

◆ VirtRegMap() [2/3]

llvm::VirtRegMap::VirtRegMap ( const VirtRegMap & )

delete

◆ VirtRegMap() [3/3]

llvm::VirtRegMap::VirtRegMap ( VirtRegMap && )

default

Member Function Documentation

◆ assignVirt2Phys()

void VirtRegMap::assignVirt2Phys	(	Register	virtReg,
		MCPhysReg	physReg
	)

creates a mapping for the specified virtual register to the specified physical register

Definition at line 86 of file VirtRegMap.cpp.

References assert(), llvm::MachineFunctionProperties::FailedRegAlloc, llvm::MachineFunction::getProperties(), getRegInfo(), llvm::MachineFunctionProperties::hasProperty(), llvm::Register::isPhysicalRegister(), and llvm::Register::isVirtual().

Referenced by llvm::RegAllocBase::allocatePhysRegs(), and llvm::LiveRegMatrix::assign().

◆ assignVirt2Shape()

void llvm::VirtRegMap::assignVirt2Shape	(	Register	virtReg,
		ShapeT	shape
	)

inline

Definition at line 110 of file VirtRegMap.h.

Referenced by getTileShape().

◆ assignVirt2StackSlot() [1/2]

int VirtRegMap::assignVirt2StackSlot ( Register virtReg )

create a mapping for the specifed virtual register to the next available stack slot

Definition at line 130 of file VirtRegMap.cpp.

References assert(), llvm::MachineRegisterInfo::getRegClass(), llvm::MachineFunction::getRegInfo(), llvm::Register::isVirtual(), and NO_STACK_SLOT.

◆ assignVirt2StackSlot() [2/2]

void VirtRegMap::assignVirt2StackSlot	(	Register	virtReg,
		int	SS
	)

create a mapping for the specified virtual register to the specified stack slot

Definition at line 138 of file VirtRegMap.cpp.

References assert(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFrameInfo::getObjectIndexBegin(), llvm::Register::isVirtual(), and NO_STACK_SLOT.

◆ clearAllVirt()

void llvm::VirtRegMap::clearAllVirt ( )

inline

clears all virtual to physical register mappings

Definition at line 124 of file VirtRegMap.h.

References llvm::IndexedMap< T, ToIndexT >::clear(), and grow().

◆ clearVirt()

void llvm::VirtRegMap::clearVirt ( Register virtReg )

inline

clears the specified virtual register's, physical register mapping

Definition at line 116 of file VirtRegMap.h.

References assert(), and llvm::Register::isVirtual().

Referenced by llvm::LiveRegMatrix::unassign().

◆ dump()

LLVM_DUMP_METHOD void VirtRegMap::dump ( ) const

Definition at line 170 of file VirtRegMap.cpp.

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

◆ getMachineFunction()

MachineFunction & llvm::VirtRegMap::getMachineFunction ( ) const

inline

Definition at line 74 of file VirtRegMap.h.

References assert().

Referenced by llvm::AllocationOrder::create(), llvm::SplitEditor::finish(), llvm::RegAllocBase::getErrorAssignment(), llvm::RegAllocBase::init(), llvm::SplitEditor::reset(), and llvm::SplitEditor::splitLiveThroughBlock().

◆ getOriginal()

Register llvm::VirtRegMap::getOriginal ( Register VirtReg ) const

inline

getOriginal - Return the original virtual register that VirtReg descends from through splitting.

A register that was not created by splitting is its own original. This operation is idempotent.

Definition at line 154 of file VirtRegMap.h.

References getPreSplitReg().

Referenced by llvm::LiveRangeEdit::createFrom(), llvm::LiveRangeEdit::eliminateDeadDefs(), llvm::SplitEditor::finish(), llvm::SplitAnalysis::isOriginalEndpoint(), llvm::VirtRegAuxInfo::isRematerializable(), and llvm::VirtRegAuxInfo::weightCalcHelper().

◆ getPhys()

MCRegister llvm::VirtRegMap::getPhys ( Register virtReg ) const

inline

returns the physical register mapped to the specified virtual register

Definition at line 90 of file VirtRegMap.h.

References assert(), and llvm::Register::isVirtual().

Referenced by llvm::LiveIntervals::addKillFlags(), assignedRegPartiallyOverlaps(), collectVirtRegShapes(), llvm::LiveDebugVariables::LDVImpl::emitDebugValues(), llvm::SystemZInstrInfo::foldMemoryOperandImpl(), getRC32(), llvm::AArch64RegisterInfo::getRegAllocationHints(), llvm::ARMBaseRegisterInfo::getRegAllocationHints(), llvm::PPCRegisterInfo::getRegAllocationHints(), llvm::RISCVRegisterInfo::getRegAllocationHints(), llvm::SystemZRegisterInfo::getRegAllocationHints(), llvm::X86RegisterInfo::getRegAllocationHints(), llvm::TargetRegisterInfo::getRegAllocationHints(), hasPhys(), hasPreferredPhys(), and llvm::LiveRegMatrix::unassign().

◆ getPreSplitReg()

Register llvm::VirtRegMap::getPreSplitReg ( Register virtReg ) const

inline

returns the live interval virtReg is split from.

Definition at line 146 of file VirtRegMap.h.

Referenced by getOriginal().

◆ getRegInfo()

MachineRegisterInfo & llvm::VirtRegMap::getRegInfo ( ) const

inline

Definition at line 79 of file VirtRegMap.h.

References MRI.

Referenced by assignVirt2Phys(), and llvm::RegAllocBase::init().

◆ getShape()

ShapeT llvm::VirtRegMap::getShape ( Register virtReg ) const

inline

Definition at line 105 of file VirtRegMap.h.

References assert(), llvm::Register::isVirtual(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::lookup().

Referenced by collectVirtRegShapes(), getTileShape(), and setIsSplitFromReg().

◆ getStackSlot()

int llvm::VirtRegMap::getStackSlot ( Register virtReg ) const

inline

returns the stack slot mapped to the specified virtual register

Definition at line 171 of file VirtRegMap.h.

References assert(), and llvm::Register::isVirtual().

Referenced by llvm::LiveDebugVariables::LDVImpl::emitDebugValues(), and isAssignedReg().

◆ getTargetRegInfo()

const TargetRegisterInfo & llvm::VirtRegMap::getTargetRegInfo ( ) const

inline

Definition at line 80 of file VirtRegMap.h.

References TRI.

Referenced by llvm::AllocationOrder::create(), and llvm::RegAllocBase::init().

◆ grow()

void VirtRegMap::grow ( )

Definition at line 79 of file VirtRegMap.cpp.

References llvm::MachineRegisterInfo::getNumVirtRegs(), and llvm::MachineFunction::getRegInfo().

Referenced by clearAllVirt().

◆ hasKnownPreference()

bool VirtRegMap::hasKnownPreference ( Register VirtReg ) const

returns true if VirtReg has a known preferred register.

This returns false if VirtReg has a preference that is a virtual register that hasn't been assigned yet.

Definition at line 121 of file VirtRegMap.cpp.

References llvm::MachineRegisterInfo::getRegAllocationHint(), and hasPhys().

◆ hasPhys()

bool llvm::VirtRegMap::hasPhys ( Register virtReg ) const

inline

returns true if the specified virtual register is mapped to a physical register

Definition at line 86 of file VirtRegMap.h.

References getPhys(), and llvm::MCRegister::isValid().

Referenced by llvm::RegAllocBase::allocatePhysRegs(), llvm::LiveRegMatrix::assign(), llvm::LiveDebugVariables::LDVImpl::emitDebugValues(), llvm::RegAllocBase::enqueue(), getRC32(), llvm::AArch64RegisterInfo::getRegAllocationHints(), llvm::ARMBaseRegisterInfo::getRegAllocationHints(), llvm::PPCRegisterInfo::getRegAllocationHints(), and hasKnownPreference().

◆ hasPreferredPhys()

bool VirtRegMap::hasPreferredPhys ( Register VirtReg ) const

returns true if VirtReg is assigned to its preferred physreg.

Definition at line 112 of file VirtRegMap.cpp.

References getPhys(), llvm::MachineRegisterInfo::getSimpleHint(), llvm::Register::isValid(), and llvm::Register::isVirtual().

◆ hasShape()

bool llvm::VirtRegMap::hasShape ( Register virtReg ) const

inline

Definition at line 101 of file VirtRegMap.h.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::contains().

Referenced by getTileShape(), and setIsSplitFromReg().

◆ init()

void llvm::VirtRegMap::init ( MachineFunction & MF )

Referenced by llvm::VirtRegMapAnalysis::run(), and llvm::VirtRegMapWrapperLegacy::runOnMachineFunction().

◆ isAssignedReg()

bool llvm::VirtRegMap::isAssignedReg ( Register virtReg ) const

inline

returns true if the specified virtual register is not mapped to a stack slot or rematerialized.

Definition at line 161 of file VirtRegMap.h.

References getStackSlot(), and NO_STACK_SLOT.

Referenced by llvm::LiveDebugVariables::LDVImpl::emitDebugValues().

◆ isShapeMapEmpty()

bool llvm::VirtRegMap::isShapeMapEmpty ( ) const

inline

Definition at line 99 of file VirtRegMap.h.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::empty().

◆ operator=()

VirtRegMap & llvm::VirtRegMap::operator= ( const VirtRegMap & )

delete

◆ print()

void VirtRegMap::print	(	raw_ostream &	OS,
		const Module *	M = `nullptr`
	)		const

Definition at line 148 of file VirtRegMap.cpp.

References llvm::MachineRegisterInfo::getNumVirtRegs(), llvm::MachineRegisterInfo::getRegClass(), llvm::TargetRegisterInfo::getRegClassName(), llvm::Register::index2VirtReg(), NO_STACK_SLOT, OS, and llvm::printReg().

Referenced by dump(), llvm::operator<<(), and llvm::VirtRegMapWrapperLegacy::print().

◆ setIsSplitFromReg()

void llvm::VirtRegMap::setIsSplitFromReg	(	Register	virtReg,
		Register	SReg
	)

inline

records virtReg is a split live interval from SReg.

Definition at line 138 of file VirtRegMap.h.

References getShape(), and hasShape().

Referenced by llvm::LiveRangeEdit::createFrom(), llvm::LiveRangeEdit::eliminateDeadDefs(), and llvm::SplitEditor::finish().

Member Data Documentation

◆ NO_STACK_SLOT

constexpr int llvm::VirtRegMap::NO_STACK_SLOT = INT_MAX

staticconstexpr

Definition at line 65 of file VirtRegMap.h.

Referenced by assignVirt2StackSlot(), llvm::LiveDebugVariables::LDVImpl::emitDebugValues(), isAssignedReg(), and print().

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

include/llvm/CodeGen/VirtRegMap.h
lib/CodeGen/VirtRegMap.cpp

Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ VirtRegMap() [1/3]

◆ VirtRegMap() [2/3]

◆ VirtRegMap() [3/3]

Member Function Documentation

◆ assignVirt2Phys()

◆ assignVirt2Shape()

◆ assignVirt2StackSlot() [1/2]

◆ assignVirt2StackSlot() [2/2]

◆ clearAllVirt()

◆ clearVirt()

◆ dump()

◆ getMachineFunction()

◆ getOriginal()

◆ getPhys()

◆ getPreSplitReg()

◆ getRegInfo()

◆ getShape()

◆ getStackSlot()

◆ getTargetRegInfo()

◆ grow()

◆ hasKnownPreference()

◆ hasPhys()

◆ hasPreferredPhys()

◆ hasShape()

◆ init()

◆ isAssignedReg()

◆ isShapeMapEmpty()

◆ operator=()

◆ print()

◆ setIsSplitFromReg()

Member Data Documentation

◆ NO_STACK_SLOT