llvm::CriticalAntiDepBreaker Class Reference

#include <CriticalAntiDepBreaker.h>

Inheritance diagram for llvm::CriticalAntiDepBreaker:

Collaboration diagram for llvm::CriticalAntiDepBreaker:

Public Member Functions
	CriticalAntiDepBreaker (MachineFunction &MFi, const RegisterClassInfo &)
	~CriticalAntiDepBreaker ()
void	StartBlock (MachineBasicBlock *BB)
	Start - Initialize anti-dep breaking for a new basic block. More...
unsigned	BreakAntiDependencies (const std::vector< SUnit > &SUnits, MachineBasicBlock::iterator Begin, MachineBasicBlock::iterator End, unsigned InsertPosIndex, DbgValueVector &DbgValues)
void	Observe (MachineInstr *MI, unsigned Count, unsigned InsertPosIndex)
void	FinishBlock ()
	Finish - Finish anti-dep breaking for a basic block. More...
Public Member Functions inherited from llvm::AntiDepBreaker
virtual	~AntiDepBreaker ()
void	UpdateDbgValue (MachineInstr *MI, unsigned OldReg, unsigned NewReg)

Additional Inherited Members
Public Types inherited from llvm::AntiDepBreaker
typedef std::vector< std::pair < MachineInstr *, MachineInstr * > >	DbgValueVector

Detailed Description

Definition at line 34 of file CriticalAntiDepBreaker.h.

Constructor & Destructor Documentation

CriticalAntiDepBreaker::CriticalAntiDepBreaker	(	MachineFunction &	MFi,
		const RegisterClassInfo &	RCI
	)

Definition at line 30 of file CriticalAntiDepBreaker.cpp.

CriticalAntiDepBreaker::~CriticalAntiDepBreaker

(

)

Definition at line 41 of file CriticalAntiDepBreaker.cpp.

Member Function Documentation

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

virtual

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

Implements llvm::AntiDepBreaker.

Definition at line 406 of file CriticalAntiDepBreaker.cpp.

References llvm::SDep::Anti, CriticalPathStep(), llvm::SDep::Data, llvm::dbgs(), DEBUG, llvm::SUnit::getDepth(), llvm::SUnit::getInstr(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineInstr::hasExtraDefRegAllocReq(), I, llvm::MachineRegisterInfo::isAllocatable(), llvm::MachineInstr::isCall(), llvm::MachineInstr::isDebugValue(), llvm::MachineOperand::isDef(), llvm::TargetInstrInfo::isPredicated(), llvm::MachineOperand::isReg(), llvm::MachineOperand::isUse(), llvm::SUnit::Latency, P, llvm::SUnit::Preds, llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), llvm::BitVector::test(), and llvm::AntiDepBreaker::UpdateDbgValue().

void CriticalAntiDepBreaker::FinishBlock ( )

virtual

Finish - Finish anti-dep breaking for a basic block.

Implements llvm::AntiDepBreaker.

Definition at line 89 of file CriticalAntiDepBreaker.cpp.

References llvm::BitVector::reset().

void CriticalAntiDepBreaker::Observe ( MachineInstr *  MI, unsigned  Count, unsigned  InsertPosIndex  )

virtual

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

Implements llvm::AntiDepBreaker.

Definition at line 94 of file CriticalAntiDepBreaker.cpp.

References llvm::MCRegisterInfo::getNumRegs(), and llvm::MachineInstr::isDebugValue().

void CriticalAntiDepBreaker::StartBlock ( MachineBasicBlock *  BB )

virtual

Start - Initialize anti-dep breaking for a new basic block.

Implements llvm::AntiDepBreaker.

Definition at line 44 of file CriticalAntiDepBreaker.cpp.

References llvm::MachineBasicBlock::back(), llvm::TargetRegisterInfo::getCalleeSavedRegs(), llvm::MachineFunction::getFrameInfo(), llvm::MCRegisterInfo::getNumRegs(), llvm::MachineFrameInfo::getPristineRegs(), I, llvm::MachineInstr::isReturn(), llvm::MCRegAliasIterator::isValid(), llvm::BitVector::reset(), llvm::MachineBasicBlock::size(), llvm::MachineBasicBlock::succ_begin(), llvm::MachineBasicBlock::succ_end(), and llvm::BitVector::test().

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

• CriticalAntiDepBreaker.h
• CriticalAntiDepBreaker.cpp