llvm::RAGreedy Class Reference

#include "CodeGen/RegAllocGreedy.h"

Inheritance diagram for llvm::RAGreedy:

Classes
class	ExtraRegInfo
	Track allocation stage and eviction loop prevention during allocation. More...
struct	RequiredAnalyses

Public Member Functions
LiveRegMatrix *	getInterferenceMatrix () const
LiveIntervals *	getLiveIntervals () const
VirtRegMap *	getVirtRegMap () const
const RegisterClassInfo &	getRegClassInfo () const
const ExtraRegInfo &	getExtraInfo () const
size_t	getQueueSize () const
bool	getRegClassPriorityTrumpsGlobalness () const
bool	getReverseLocalAssignment () const
	RAGreedy (RequiredAnalyses &Analyses, const RegAllocFilterFunc F=nullptr)
Spiller &	spiller () override
void	enqueueImpl (const LiveInterval *LI) override
	enqueue - Add VirtReg to the priority queue of unassigned registers.
const LiveInterval *	dequeue () override
	dequeue - Return the next unassigned register, or NULL.
MCRegister	selectOrSplit (const LiveInterval &, SmallVectorImpl< Register > &) override
void	aboutToRemoveInterval (const LiveInterval &) override
	Method called when the allocator is about to remove a LiveInterval.
bool	run (MachineFunction &mf)
	Perform register allocation.
void	releaseMemory ()

Additional Inherited Members
Static Public Attributes inherited from llvm::RegAllocBase
static bool	VerifyEnabled = false
	VerifyEnabled - True when -verify-regalloc is given.
Protected Member Functions inherited from llvm::RegAllocBase
	RegAllocBase (const RegAllocFilterFunc F=nullptr)
virtual	~RegAllocBase ()=default
void	init (VirtRegMap &vrm, LiveIntervals &lis, LiveRegMatrix &mat)
bool	shouldAllocateRegister (Register Reg)
	Get whether a given register should be allocated.
void	allocatePhysRegs ()
virtual void	postOptimization ()
void	cleanupFailedVReg (Register FailedVReg, MCRegister PhysReg, SmallVectorImpl< Register > &SplitRegs)
	Perform cleanups on registers that failed to allocate.
void	enqueue (const LiveInterval *LI)
	enqueue - Add VirtReg to the priority queue of unassigned registers.
MCPhysReg	getErrorAssignment (const TargetRegisterClass &RC, const MachineInstr *CtxMI=nullptr)
	Query a physical register to use as a filler in contexts where the allocation has failed.
Protected Attributes inherited from llvm::RegAllocBase
const TargetRegisterInfo *	TRI = nullptr
MachineRegisterInfo *	MRI = nullptr
VirtRegMap *	VRM = nullptr
LiveIntervals *	LIS = nullptr
LiveRegMatrix *	Matrix = nullptr
RegisterClassInfo	RegClassInfo
SmallPtrSet< MachineInstr *, 32 >	DeadRemats
	Inst which is a def of an original reg and whose defs are already all dead after remat is saved in DeadRemats.
SmallSet< Register, 2 >	FailedVRegs
Static Protected Attributes inherited from llvm::RegAllocBase
static const char	TimerGroupName [] = "regalloc"
static const char	TimerGroupDescription [] = "Register Allocation"

Detailed Description

Definition at line 60 of file RegAllocGreedy.h.

Constructor & Destructor Documentation

RAGreedy()

RAGreedy::RAGreedy	(	RequiredAnalyses &	Analyses,
		const RegAllocFilterFunc	F = nullptr )

Definition at line 200 of file RegAllocGreedy.cpp.

References llvm::RAGreedy::RequiredAnalyses::Bundles, llvm::RAGreedy::RequiredAnalyses::DebugVars, llvm::RAGreedy::RequiredAnalyses::DomTree, llvm::RAGreedy::RequiredAnalyses::EvictProvider, F, llvm::RAGreedy::RequiredAnalyses::Indexes, llvm::RAGreedy::RequiredAnalyses::LIS, llvm::RegAllocBase::LIS, llvm::RAGreedy::RequiredAnalyses::Loops, llvm::RAGreedy::RequiredAnalyses::LRM, llvm::RAGreedy::RequiredAnalyses::LSS, llvm::RegAllocBase::Matrix, llvm::RAGreedy::RequiredAnalyses::MBFI, llvm::RAGreedy::RequiredAnalyses::ORE, llvm::RAGreedy::RequiredAnalyses::PriorityProvider, llvm::RegAllocBase::RegAllocBase(), llvm::RAGreedy::RequiredAnalyses::SpillPlacer, llvm::RAGreedy::RequiredAnalyses::VRM, and llvm::RegAllocBase::VRM.

Member Function Documentation

aboutToRemoveInterval()

void RAGreedy::aboutToRemoveInterval ( const LiveInterval & LI )

overridevirtual

Method called when the allocator is about to remove a LiveInterval.

Reimplemented from llvm::RegAllocBase.

Definition at line 2353 of file RegAllocGreedy.cpp.

dequeue()

const LiveInterval * RAGreedy::dequeue ( )

overridevirtual

dequeue - Return the next unassigned register, or NULL.

Implements llvm::RegAllocBase.

Definition at line 516 of file RegAllocGreedy.cpp.

References dequeue().

Referenced by dequeue().

enqueueImpl()

void RAGreedy::enqueueImpl ( const LiveInterval * LI )

overridevirtual

enqueue - Add VirtReg to the priority queue of unassigned registers.

Implements llvm::RegAllocBase.

Definition at line 417 of file RegAllocGreedy.cpp.

getExtraInfo()

const ExtraRegInfo & llvm::RAGreedy::getExtraInfo ( ) const

inline

Definition at line 147 of file RegAllocGreedy.h.

getInterferenceMatrix()

LiveRegMatrix * llvm::RAGreedy::getInterferenceMatrix ( ) const

inline

Definition at line 143 of file RegAllocGreedy.h.

References llvm::RegAllocBase::Matrix.

getLiveIntervals()

LiveIntervals * llvm::RAGreedy::getLiveIntervals ( ) const

inline

Definition at line 144 of file RegAllocGreedy.h.

References llvm::RegAllocBase::LIS.

getQueueSize()

size_t llvm::RAGreedy::getQueueSize ( ) const

inline

Definition at line 148 of file RegAllocGreedy.h.

getRegClassInfo()

const RegisterClassInfo & llvm::RAGreedy::getRegClassInfo ( ) const

inline

Definition at line 146 of file RegAllocGreedy.h.

References llvm::RegAllocBase::RegClassInfo.

getRegClassPriorityTrumpsGlobalness()

bool llvm::RAGreedy::getRegClassPriorityTrumpsGlobalness ( ) const

inline

Definition at line 152 of file RegAllocGreedy.h.

getReverseLocalAssignment()

bool llvm::RAGreedy::getReverseLocalAssignment ( ) const

inline

Definition at line 155 of file RegAllocGreedy.h.

getVirtRegMap()

VirtRegMap * llvm::RAGreedy::getVirtRegMap ( ) const

inline

Definition at line 145 of file RegAllocGreedy.h.

References llvm::RegAllocBase::VRM.

releaseMemory()

void RAGreedy::releaseMemory

(

)

Definition at line 412 of file RegAllocGreedy.cpp.

Referenced by run().

run()

bool RAGreedy::run

(

MachineFunction &

mf

)

Perform register allocation.

Definition at line 2842 of file RegAllocGreedy.cpp.

References llvm::RegAllocBase::allocatePhysRegs(), llvm::createInlineSpiller(), llvm::dbgs(), llvm::errs(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineFunction::getName(), llvm::MachineFunction::getSubtarget(), GreedyRegClassPriorityTrumpsGlobalness, GreedyReverseLocalAssignment, llvm::RegAllocBase::init(), llvm::RegAllocBase::LIS, LLVM_DEBUG, llvm::RegAllocBase::Matrix, llvm::RegAllocBase::postOptimization(), releaseMemory(), llvm::RegAllocBase::TRI, llvm::RegAllocBase::VerifyEnabled, and llvm::RegAllocBase::VRM.

selectOrSplit()

MCRegister RAGreedy::selectOrSplit ( const LiveInterval & VirtReg, SmallVectorImpl< Register > & NewVRegs )

overridevirtual

Implements llvm::RegAllocBase.

Definition at line 2287 of file RegAllocGreedy.cpp.

spiller()

Spiller & llvm::RAGreedy::spiller ( )

inlineoverridevirtual

Implements llvm::RegAllocBase.

Definition at line 292 of file RegAllocGreedy.h.

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

• lib/CodeGen/RegAllocGreedy.h
• lib/CodeGen/RegAllocGreedy.cpp