llvm::AggressiveAntiDepBreaker Class Reference

#include "CodeGen/AggressiveAntiDepBreaker.h"

Inheritance diagram for llvm::AggressiveAntiDepBreaker:

Public Member Functions
	AggressiveAntiDepBreaker (MachineFunction &MFi, const RegisterClassInfo &RCI, TargetSubtargetInfo::RegClassVector &CriticalPathRCs)
AggressiveAntiDepBreaker &	operator= (const AggressiveAntiDepBreaker &other)=delete
	AggressiveAntiDepBreaker (const AggressiveAntiDepBreaker &other)=delete
	~AggressiveAntiDepBreaker () override
void	StartBlock (MachineBasicBlock *BB) override
	Initialize anti-dep breaking for a new basic block.
unsigned	BreakAntiDependencies (const std::vector< SUnit > &SUnits, MachineBasicBlock::iterator Begin, MachineBasicBlock::iterator End, unsigned InsertPosIndex, DbgValueVector &DbgValues) override
	Identifiy anti-dependencies along the critical path of the ScheduleDAG and break them by renaming registers.
void	Observe (MachineInstr &MI, unsigned Count, unsigned InsertPosIndex) override
	Update liveness information to account for the current instruction, which will not be scheduled.
void	FinishBlock () override
	Finish anti-dep breaking for a basic block.
Public Member Functions inherited from llvm::AntiDepBreaker
virtual	~AntiDepBreaker ()
void	UpdateDbgValue (MachineInstr &MI, MCRegister OldReg, MCRegister NewReg)
	Update DBG_VALUE or DBG_PHI if dependency breaker is updating other machine instruction to use NewReg.
void	UpdateDbgValues (const DbgValueVector &DbgValues, MachineInstr *ParentMI, MCRegister OldReg, MCRegister NewReg)
	Update all DBG_VALUE instructions that may be affected by the dependency breaker's update of ParentMI to use NewReg.

Additional Inherited Members
Public Types inherited from llvm::AntiDepBreaker
using	DbgValueVector

Detailed Description

Definition at line 117 of file AggressiveAntiDepBreaker.h.

Constructor & Destructor Documentation

AggressiveAntiDepBreaker() [1/2]

AggressiveAntiDepBreaker::AggressiveAntiDepBreaker	(	MachineFunction &	MFi,
		const RegisterClassInfo &	RCI,
		TargetSubtargetInfo::RegClassVector &	CriticalPathRCs )

Definition at line 119 of file AggressiveAntiDepBreaker.cpp.

References llvm::dbgs(), LLVM_DEBUG, and llvm::printReg().

Referenced by AggressiveAntiDepBreaker(), and operator=().

AggressiveAntiDepBreaker() [2/2]

llvm::AggressiveAntiDepBreaker::AggressiveAntiDepBreaker ( const AggressiveAntiDepBreaker & other )

delete

References AggressiveAntiDepBreaker(), BreakAntiDependencies(), llvm::Count, FinishBlock(), MI, Observe(), Reg, and StartBlock().

~AggressiveAntiDepBreaker()

AggressiveAntiDepBreaker::~AggressiveAntiDepBreaker ( )

override

Definition at line 141 of file AggressiveAntiDepBreaker.cpp.

Member Function Documentation

BreakAntiDependencies()

unsigned AggressiveAntiDepBreaker::BreakAntiDependencies ( const std::vector< SUnit > & SUnits, MachineBasicBlock::iterator Begin, MachineBasicBlock::iterator End, unsigned InsertPosIndex, DbgValueVector & DbgValues )

overridevirtual

Identifiy anti-dependencies along the critical path of the ScheduleDAG and break them by renaming registers.

BreakAntiDependencies - Identifiy anti-dependencies within the ScheduleDAG and break them by renaming registers.

Implements llvm::AntiDepBreaker.

Definition at line 734 of file AggressiveAntiDepBreaker.cpp.

References llvm::SDep::Anti, AntiDepEdges(), assert(), llvm::Count, CriticalPathStep(), llvm::SDep::Data, llvm::dbgs(), llvm::SUnit::getDepth(), llvm::SUnit::getInstr(), I, llvm::MCRegister::id(), llvm::MachineOperand::isImplicit(), llvm::SUnit::Latency, LLVM_DEBUG, llvm::make_range(), MI, llvm::SDep::Output, P, llvm::SUnit::Preds, llvm::printReg(), llvm::BitVector::test(), and llvm::AntiDepBreaker::UpdateDbgValues().

Referenced by AggressiveAntiDepBreaker().

FinishBlock()

void AggressiveAntiDepBreaker::FinishBlock ( )

overridevirtual

Finish anti-dep breaking for a basic block.

Implements llvm::AntiDepBreaker.

Definition at line 183 of file AggressiveAntiDepBreaker.cpp.

Referenced by AggressiveAntiDepBreaker().

Observe()

void AggressiveAntiDepBreaker::Observe ( MachineInstr & MI, unsigned Count, unsigned InsertPosIndex )

overridevirtual

Update liveness information to account for the current instruction, which will not be scheduled.

Implements llvm::AntiDepBreaker.

Definition at line 188 of file AggressiveAntiDepBreaker.cpp.

References assert(), llvm::Count, llvm::dbgs(), LLVM_DEBUG, MI, and llvm::printReg().

Referenced by AggressiveAntiDepBreaker().

operator=()

AggressiveAntiDepBreaker & llvm::AggressiveAntiDepBreaker::operator= ( const AggressiveAntiDepBreaker & other )

delete

References AggressiveAntiDepBreaker().

StartBlock()

void AggressiveAntiDepBreaker::StartBlock ( MachineBasicBlock * BB )

overridevirtual

Initialize anti-dep breaking for a new basic block.

Implements llvm::AntiDepBreaker.

Definition at line 145 of file AggressiveAntiDepBreaker.cpp.

References assert(), llvm::MachineFrameInfo::getPristineRegs(), I, llvm::MCRegister::id(), llvm::MachineBasicBlock::isReturnBlock(), llvm::MCRegAliasIterator::isValid(), llvm::MachineBasicBlock::size(), llvm::MachineBasicBlock::successors(), and llvm::BitVector::test().

Referenced by AggressiveAntiDepBreaker().

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

• lib/CodeGen/AggressiveAntiDepBreaker.h
• lib/CodeGen/AggressiveAntiDepBreaker.cpp