Memory dependency unit class. More...

#include <mem_dep_unit.hh>

Classes
class	MemDepEntry
	Memory dependence entries that track memory operations, marking when the instruction is ready to execute and what instructions depend upon it. More...

struct	MemDepUnitStats

Public Types
typedef Impl::DynInstPtr	DynInstPtr

typedef Impl::DynInstConstPtr	DynInstConstPtr

typedef Impl::O3CPU	O3CPU

Public Member Functions
	MemDepUnit ()
	Empty constructor. More...

	MemDepUnit (const DerivO3CPUParams &params)
	Constructs a MemDepUnit with given parameters. More...

	~MemDepUnit ()
	Frees up any memory allocated. More...

std::string	name () const
	Returns the name of the memory dependence unit. More...

void	init (const DerivO3CPUParams &params, ThreadID tid, O3CPU *cpu)
	Initializes the unit with parameters and a thread id. More...

bool	isDrained () const
	Determine if we are drained. More...

void	drainSanityCheck () const
	Perform sanity checks after a drain. More...

void	takeOverFrom ()
	Takes over from another CPU's thread. More...

void	setIQ (InstructionQueue< Impl > *iq_ptr)
	Sets the pointer to the IQ. More...

void	insert (const DynInstPtr &inst)
	Inserts a memory instruction. More...

void	insertNonSpec (const DynInstPtr &inst)
	Inserts a non-speculative memory instruction. More...

void	insertBarrier (const DynInstPtr &barr_inst)
	Inserts a barrier instruction. More...

void	regsReady (const DynInstPtr &inst)
	Indicate that an instruction has its registers ready. More...

void	nonSpecInstReady (const DynInstPtr &inst)
	Indicate that a non-speculative instruction is ready. More...

void	reschedule (const DynInstPtr &inst)
	Reschedules an instruction to be re-executed. More...

void	replay ()
	Replays all instructions that have been rescheduled by moving them to the ready list. More...

void	completeInst (const DynInstPtr &inst)
	Notifies completion of an instruction. More...

void	squash (const InstSeqNum &squashed_num, ThreadID tid)
	Squashes all instructions up until a given sequence number for a specific thread. More...

void	violation (const DynInstPtr &store_inst, const DynInstPtr &violating_load)
	Indicates an ordering violation between a store and a younger load. More...

void	issue (const DynInstPtr &inst)
	Issues the given instruction. More...

void	dumpLists ()
	Debugging function to dump the lists of instructions. More...

Protected Attributes
std::string	_name

Private Types
typedef std::list< DynInstPtr >::iterator	ListIt

typedef std::shared_ptr< MemDepEntry >	MemDepEntryPtr

typedef std::unordered_map< InstSeqNum, MemDepEntryPtr, SNHash >	MemDepHash

typedef MemDepHash::iterator	MemDepHashIt

Private Member Functions
void	completed (const DynInstPtr &inst)
	Completes a memory instruction. More...

void	wakeDependents (const DynInstPtr &inst)
	Wakes any dependents of a memory instruction. More...

MemDepEntryPtr &	findInHash (const DynInstConstPtr &inst)
	Finds the memory dependence entry in the hash map. More...

void	moveToReady (MemDepEntryPtr &ready_inst_entry)
	Moves an entry to the ready list. More...

bool	hasLoadBarrier () const
	Is there an outstanding load barrier that loads must wait on. More...

bool	hasStoreBarrier () const
	Is there an outstanding store barrier that loads must wait on. More...

void	insertBarrierSN (const DynInstPtr &barr_inst)
	Inserts the SN of a barrier inst. More...

Private Attributes
MemDepHash	memDepHash
	A hash map of all memory dependence entries. More...

std::list< DynInstPtr >	instList [Impl::MaxThreads]
	A list of all instructions in the memory dependence unit. More...

std::list< DynInstPtr >	instsToReplay
	A list of all instructions that are going to be replayed. More...

MemDepPred	depPred
	The memory dependence predictor. More...

std::unordered_set< InstSeqNum >	loadBarrierSNs
	Sequence numbers of outstanding load barriers. More...

std::unordered_set< InstSeqNum >	storeBarrierSNs
	Sequence numbers of outstanding store barriers. More...

InstructionQueue< Impl > *	iqPtr
	Pointer to the IQ. More...

int	id
	The thread id of this memory dependence unit. More...

MemDepUnit::MemDepUnitStats	stats

Detailed Description

template<class MemDepPred, class Impl>
class MemDepUnit< MemDepPred, Impl >

Memory dependency unit class.

This holds the memory dependence predictor. As memory operations are issued to the IQ, they are also issued to this unit, which then looks up the prediction as to what they are dependent upon. This unit must be checked prior to a memory operation being able to issue. Although this is templated, it's somewhat hard to make a generic memory dependence unit. This one is mostly for store sets; it will be quite limited in what other memory dependence predictions it can also utilize. Thus this class should be most likely be rewritten for other dependence prediction schemes.

Definition at line 80 of file mem_dep_unit.hh.

Member Typedef Documentation

◆ DynInstConstPtr

template<class MemDepPred , class Impl >

typedef Impl::DynInstConstPtr MemDepUnit< MemDepPred, Impl >::DynInstConstPtr

Definition at line 87 of file mem_dep_unit.hh.

◆ DynInstPtr

template<class MemDepPred , class Impl >

typedef Impl::DynInstPtr MemDepUnit< MemDepPred, Impl >::DynInstPtr

Definition at line 86 of file mem_dep_unit.hh.

◆ ListIt

template<class MemDepPred , class Impl >

typedef std::list<DynInstPtr>::iterator MemDepUnit< MemDepPred, Impl >::ListIt

private

Definition at line 166 of file mem_dep_unit.hh.

◆ MemDepEntryPtr

template<class MemDepPred , class Impl >

typedef std::shared_ptr<MemDepEntry> MemDepUnit< MemDepPred, Impl >::MemDepEntryPtr

private

Definition at line 168 of file mem_dep_unit.hh.

◆ MemDepHash

template<class MemDepPred , class Impl >

typedef std::unordered_map<InstSeqNum, MemDepEntryPtr, SNHash> MemDepUnit< MemDepPred, Impl >::MemDepHash

private

Definition at line 240 of file mem_dep_unit.hh.

◆ MemDepHashIt

template<class MemDepPred , class Impl >

typedef MemDepHash::iterator MemDepUnit< MemDepPred, Impl >::MemDepHashIt

private

Definition at line 242 of file mem_dep_unit.hh.

◆ O3CPU

template<class MemDepPred , class Impl >

typedef Impl::O3CPU MemDepUnit< MemDepPred, Impl >::O3CPU

Definition at line 88 of file mem_dep_unit.hh.

Constructor & Destructor Documentation

◆ MemDepUnit() [1/2]

template<class MemDepPred , class Impl >

MemDepUnit< MemDepPred, Impl >::MemDepUnit

Empty constructor.

Must call init() prior to using in this case.

Definition at line 55 of file mem_dep_unit_impl.hh.

◆ MemDepUnit() [2/2]

template<class MemDepPred , class Impl >

MemDepUnit< MemDepPred, Impl >::MemDepUnit ( const DerivO3CPUParams & params )

Constructs a MemDepUnit with given parameters.

Definition at line 62 of file mem_dep_unit_impl.hh.

References DPRINTF.

◆ ~MemDepUnit()

template<class MemDepPred , class Impl >

MemDepUnit< MemDepPred, Impl >::~MemDepUnit

Frees up any memory allocated.

Definition at line 73 of file mem_dep_unit_impl.hh.

Member Function Documentation

◆ completed()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::completed ( const DynInstPtr & inst )

private

Completes a memory instruction.

Definition at line 424 of file mem_dep_unit_impl.hh.

References DPRINTF, MemDepUnit< MemDepPred, Impl >::instList, and MemDepUnit< MemDepPred, Impl >::memDepHash.

Referenced by MemDepUnit< MemDepPred, Impl >::completeInst().

◆ completeInst()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::completeInst ( const DynInstPtr & inst )

Notifies completion of an instruction.

Definition at line 448 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::completed(), DPRINTF, DTRACE, MemDepUnit< MemDepPred, Impl >::hasLoadBarrier(), MemDepUnit< MemDepPred, Impl >::hasStoreBarrier(), MemDepUnit< MemDepPred, Impl >::loadBarrierSNs, MemDepUnit< MemDepPred, Impl >::storeBarrierSNs, and MemDepUnit< MemDepPred, Impl >::wakeDependents().

Referenced by InstructionQueue< Impl >::wakeDependents().

◆ drainSanityCheck()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::drainSanityCheck

Perform sanity checks after a drain.

Definition at line 142 of file mem_dep_unit_impl.hh.

References ArmISA::i, MemDepUnit< MemDepPred, Impl >::instList, MemDepUnit< MemDepPred, Impl >::instsToReplay, and MemDepUnit< MemDepPred, Impl >::memDepHash.

◆ dumpLists()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::dumpLists

Debugging function to dump the lists of instructions.

Definition at line 615 of file mem_dep_unit_impl.hh.

References cprintf(), MemDepUnit< MemDepPred, Impl >::instList, and MemDepUnit< MemDepPred, Impl >::memDepHash.

◆ findInHash()

template<class MemDepPred , class Impl >

MemDepUnit< MemDepPred, Impl >::MemDepEntryPtr & MemDepUnit< MemDepPred, Impl >::findInHash ( const DynInstConstPtr & inst )

inlineprivate

Finds the memory dependence entry in the hash map.

Definition at line 591 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::memDepHash.

Referenced by MemDepUnit< MemDepPred, Impl >::nonSpecInstReady(), MemDepUnit< MemDepPred, Impl >::regsReady(), MemDepUnit< MemDepPred, Impl >::replay(), and MemDepUnit< MemDepPred, Impl >::wakeDependents().

◆ hasLoadBarrier()

template<class MemDepPred , class Impl >

bool MemDepUnit< MemDepPred, Impl >::hasLoadBarrier ( ) const

inlineprivate

Is there an outstanding load barrier that loads must wait on.

Definition at line 267 of file mem_dep_unit.hh.

References MemDepUnit< MemDepPred, Impl >::loadBarrierSNs.

Referenced by MemDepUnit< MemDepPred, Impl >::completeInst(), and MemDepUnit< MemDepPred, Impl >::insert().

◆ hasStoreBarrier()

template<class MemDepPred , class Impl >

bool MemDepUnit< MemDepPred, Impl >::hasStoreBarrier ( ) const

inlineprivate

Is there an outstanding store barrier that loads must wait on.

Definition at line 270 of file mem_dep_unit.hh.

References MemDepUnit< MemDepPred, Impl >::storeBarrierSNs.

Referenced by MemDepUnit< MemDepPred, Impl >::completeInst(), and MemDepUnit< MemDepPred, Impl >::insert().

◆ init()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::init	(	const DerivO3CPUParams &	params,
		ThreadID	tid,
		O3CPU *	cpu
	)

Initializes the unit with parameters and a thread id.

Definition at line 99 of file mem_dep_unit_impl.hh.

References csprintf(), and DPRINTF.

Referenced by InstructionQueue< Impl >::InstructionQueue().

◆ insert()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::insert ( const DynInstPtr & inst )

Inserts a memory instruction.

Definition at line 204 of file mem_dep_unit_impl.hh.

Referenced by InstructionQueue< Impl >::insert().

◆ insertBarrier()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::insertBarrier ( const DynInstPtr & barr_inst )

Inserts a barrier instruction.

Definition at line 337 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::insertBarrierSN(), MemDepUnit< MemDepPred, Impl >::instList, and MemDepUnit< MemDepPred, Impl >::memDepHash.

Referenced by InstructionQueue< Impl >::insertBarrier(), and MemDepUnit< MemDepPred, Impl >::insertNonSpec().

◆ insertBarrierSN()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::insertBarrierSN ( const DynInstPtr & barr_inst )

private

Inserts the SN of a barrier inst.

to the list of tracked barriers

Definition at line 171 of file mem_dep_unit_impl.hh.

References DPRINTF, DTRACE, MemDepUnit< MemDepPred, Impl >::loadBarrierSNs, and MemDepUnit< MemDepPred, Impl >::storeBarrierSNs.

Referenced by MemDepUnit< MemDepPred, Impl >::insert(), and MemDepUnit< MemDepPred, Impl >::insertBarrier().

◆ insertNonSpec()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::insertNonSpec ( const DynInstPtr & inst )

Inserts a non-speculative memory instruction.

Definition at line 315 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::depPred, DPRINTF, MemDepUnit< MemDepPred, Impl >::insertBarrier(), MemDepUnit< MemDepPred, Impl >::MemDepUnitStats::insertedLoads, MemDepUnit< MemDepPred, Impl >::MemDepUnitStats::insertedStores, panic, and MemDepUnit< MemDepPred, Impl >::stats.

Referenced by InstructionQueue< Impl >::insertNonSpec().

◆ isDrained()

template<class MemDepPred , class Impl >

bool MemDepUnit< MemDepPred, Impl >::isDrained

Determine if we are drained.

Definition at line 129 of file mem_dep_unit_impl.hh.

References ArmISA::i, MemDepUnit< MemDepPred, Impl >::instList, MemDepUnit< MemDepPred, Impl >::instsToReplay, and MemDepUnit< MemDepPred, Impl >::memDepHash.

◆ issue()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::issue ( const DynInstPtr & inst )

Issues the given instruction.

Definition at line 581 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::depPred, and DPRINTF.

Referenced by InstructionQueue< Impl >::scheduleReadyInsts().

◆ moveToReady()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::moveToReady ( MemDepEntryPtr & ready_inst_entry )

inlineprivate

Moves an entry to the ready list.

Definition at line 602 of file mem_dep_unit_impl.hh.

References DPRINTF, and MemDepUnit< MemDepPred, Impl >::iqPtr.

Referenced by MemDepUnit< MemDepPred, Impl >::insert(), MemDepUnit< MemDepPred, Impl >::nonSpecInstReady(), MemDepUnit< MemDepPred, Impl >::regsReady(), MemDepUnit< MemDepPred, Impl >::replay(), and MemDepUnit< MemDepPred, Impl >::wakeDependents().

◆ name()

template<class MemDepPred , class Impl >

std::string MemDepUnit< MemDepPred, Impl >::name ( ) const

inline

Returns the name of the memory dependence unit.

Definition at line 100 of file mem_dep_unit.hh.

References MemDepUnit< MemDepPred, Impl >::_name.

◆ nonSpecInstReady()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::nonSpecInstReady ( const DynInstPtr & inst )

Indicate that a non-speculative instruction is ready.

Definition at line 383 of file mem_dep_unit_impl.hh.

References DPRINTF, MemDepUnit< MemDepPred, Impl >::findInHash(), and MemDepUnit< MemDepPred, Impl >::moveToReady().

Referenced by InstructionQueue< Impl >::scheduleNonSpec().

◆ regsReady()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::regsReady ( const DynInstPtr & inst )

Indicate that an instruction has its registers ready.

Definition at line 360 of file mem_dep_unit_impl.hh.

References DPRINTF, MemDepUnit< MemDepPred, Impl >::findInHash(), and MemDepUnit< MemDepPred, Impl >::moveToReady().

Referenced by InstructionQueue< Impl >::addIfReady().

◆ replay()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::replay

Replays all instructions that have been rescheduled by moving them to the ready list.

Definition at line 403 of file mem_dep_unit_impl.hh.

References DPRINTF, MemDepUnit< MemDepPred, Impl >::findInHash(), MemDepUnit< MemDepPred, Impl >::instsToReplay, and MemDepUnit< MemDepPred, Impl >::moveToReady().

Referenced by InstructionQueue< Impl >::replayMemInst().

◆ reschedule()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::reschedule ( const DynInstPtr & inst )

Reschedules an instruction to be re-executed.

Definition at line 396 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::instsToReplay.

Referenced by InstructionQueue< Impl >::rescheduleMemInst().

◆ setIQ()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::setIQ ( InstructionQueue< Impl > * iq_ptr )

Sets the pointer to the IQ.

Definition at line 164 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::iqPtr.

Referenced by InstructionQueue< Impl >::InstructionQueue().

◆ squash()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::squash	(	const InstSeqNum &	squashed_num,
		ThreadID	tid
	)

Squashes all instructions up until a given sequence number for a specific thread.

Definition at line 517 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::depPred, DPRINTF, MemDepUnit< MemDepPred, Impl >::instList, MemDepUnit< MemDepPred, Impl >::instsToReplay, MemDepUnit< MemDepPred, Impl >::loadBarrierSNs, MemDepUnit< MemDepPred, Impl >::memDepHash, and MemDepUnit< MemDepPred, Impl >::storeBarrierSNs.

Referenced by InstructionQueue< Impl >::squash().

◆ takeOverFrom()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::takeOverFrom

Takes over from another CPU's thread.

Definition at line 154 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::depPred, MemDepUnit< MemDepPred, Impl >::loadBarrierSNs, and MemDepUnit< MemDepPred, Impl >::storeBarrierSNs.

◆ violation()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::violation	(	const DynInstPtr &	store_inst,
		const DynInstPtr &	violating_load
	)

Indicates an ordering violation between a store and a younger load.

Definition at line 569 of file mem_dep_unit_impl.hh.

References MemDepUnit< MemDepPred, Impl >::depPred, and DPRINTF.

Referenced by InstructionQueue< Impl >::violation().

◆ wakeDependents()

template<class MemDepPred , class Impl >

void MemDepUnit< MemDepPred, Impl >::wakeDependents ( const DynInstPtr & inst )

private

Wakes any dependents of a memory instruction.

Definition at line 480 of file mem_dep_unit_impl.hh.

References DPRINTF, MemDepUnit< MemDepPred, Impl >::findInHash(), ArmISA::i, and MemDepUnit< MemDepPred, Impl >::moveToReady().

Referenced by MemDepUnit< MemDepPred, Impl >::completeInst().

Member Data Documentation

◆ _name

template<class MemDepPred , class Impl >

std::string MemDepUnit< MemDepPred, Impl >::_name

protected

Definition at line 83 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::name().

◆ depPred

template<class MemDepPred , class Impl >

MemDepPred MemDepUnit< MemDepPred, Impl >::depPred

private

The memory dependence predictor.

It is accessed upon new instructions being added to the IQ, and responds by telling this unit what instruction the newly added instruction is dependent upon.

Definition at line 258 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::insert(), MemDepUnit< MemDepPred, Impl >::insertNonSpec(), MemDepUnit< MemDepPred, Impl >::issue(), MemDepUnit< MemDepPred, Impl >::squash(), MemDepUnit< MemDepPred, Impl >::takeOverFrom(), and MemDepUnit< MemDepPred, Impl >::violation().

◆ id

template<class MemDepPred , class Impl >

int MemDepUnit< MemDepPred, Impl >::id

private

The thread id of this memory dependence unit.

Definition at line 279 of file mem_dep_unit.hh.

◆ instList

template<class MemDepPred , class Impl >

std::list<DynInstPtr> MemDepUnit< MemDepPred, Impl >::instList[Impl::MaxThreads]

private

A list of all instructions in the memory dependence unit.

Definition at line 248 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::completed(), MemDepUnit< MemDepPred, Impl >::drainSanityCheck(), MemDepUnit< MemDepPred, Impl >::dumpLists(), MemDepUnit< MemDepPred, Impl >::insert(), MemDepUnit< MemDepPred, Impl >::insertBarrier(), MemDepUnit< MemDepPred, Impl >::isDrained(), and MemDepUnit< MemDepPred, Impl >::squash().

◆ instsToReplay

template<class MemDepPred , class Impl >

std::list<DynInstPtr> MemDepUnit< MemDepPred, Impl >::instsToReplay

private

A list of all instructions that are going to be replayed.

Definition at line 251 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::drainSanityCheck(), MemDepUnit< MemDepPred, Impl >::isDrained(), MemDepUnit< MemDepPred, Impl >::replay(), MemDepUnit< MemDepPred, Impl >::reschedule(), and MemDepUnit< MemDepPred, Impl >::squash().

◆ iqPtr

template<class MemDepPred , class Impl >

InstructionQueue<Impl>* MemDepUnit< MemDepPred, Impl >::iqPtr

private

Pointer to the IQ.

Definition at line 276 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::moveToReady(), and MemDepUnit< MemDepPred, Impl >::setIQ().

◆ loadBarrierSNs

template<class MemDepPred , class Impl >

std::unordered_set<InstSeqNum> MemDepUnit< MemDepPred, Impl >::loadBarrierSNs

private

Sequence numbers of outstanding load barriers.

Definition at line 261 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::completeInst(), MemDepUnit< MemDepPred, Impl >::hasLoadBarrier(), MemDepUnit< MemDepPred, Impl >::insert(), MemDepUnit< MemDepPred, Impl >::insertBarrierSN(), MemDepUnit< MemDepPred, Impl >::squash(), and MemDepUnit< MemDepPred, Impl >::takeOverFrom().

◆ memDepHash

template<class MemDepPred , class Impl >

MemDepHash MemDepUnit< MemDepPred, Impl >::memDepHash

private

A hash map of all memory dependence entries.

Definition at line 245 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::completed(), MemDepUnit< MemDepPred, Impl >::drainSanityCheck(), MemDepUnit< MemDepPred, Impl >::dumpLists(), MemDepUnit< MemDepPred, Impl >::findInHash(), MemDepUnit< MemDepPred, Impl >::insert(), MemDepUnit< MemDepPred, Impl >::insertBarrier(), MemDepUnit< MemDepPred, Impl >::isDrained(), and MemDepUnit< MemDepPred, Impl >::squash().

◆ stats

template<class MemDepPred , class Impl >

MemDepUnit::MemDepUnitStats MemDepUnit< MemDepPred, Impl >::stats

private

Referenced by MemDepUnit< MemDepPred, Impl >::insert(), and MemDepUnit< MemDepPred, Impl >::insertNonSpec().

◆ storeBarrierSNs

template<class MemDepPred , class Impl >

std::unordered_set<InstSeqNum> MemDepUnit< MemDepPred, Impl >::storeBarrierSNs

private

Sequence numbers of outstanding store barriers.

Definition at line 264 of file mem_dep_unit.hh.

Referenced by MemDepUnit< MemDepPred, Impl >::completeInst(), MemDepUnit< MemDepPred, Impl >::hasStoreBarrier(), MemDepUnit< MemDepPred, Impl >::insert(), MemDepUnit< MemDepPred, Impl >::insertBarrierSN(), MemDepUnit< MemDepPred, Impl >::squash(), and MemDepUnit< MemDepPred, Impl >::takeOverFrom().

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

cpu/o3/mem_dep_unit.hh
cpu/o3/mem_dep_unit_impl.hh

Classes

Public Types

Public Member Functions

Protected Attributes

Private Types

Private Member Functions

Private Attributes

Detailed Description

template<class MemDepPred, class Impl> class MemDepUnit< MemDepPred, Impl >

Member Typedef Documentation

◆ DynInstConstPtr

◆ DynInstPtr

◆ ListIt

◆ MemDepEntryPtr

◆ MemDepHash

◆ MemDepHashIt

◆ O3CPU

Constructor & Destructor Documentation

◆ MemDepUnit() [1/2]

◆ MemDepUnit() [2/2]

◆ ~MemDepUnit()

Member Function Documentation

◆ completed()

◆ completeInst()

◆ drainSanityCheck()

◆ dumpLists()

◆ findInHash()

◆ hasLoadBarrier()

◆ hasStoreBarrier()

◆ init()

◆ insert()

◆ insertBarrier()

◆ insertBarrierSN()

◆ insertNonSpec()

◆ isDrained()

◆ issue()

◆ moveToReady()

◆ name()

◆ nonSpecInstReady()

◆ regsReady()

◆ replay()

◆ reschedule()

◆ setIQ()

◆ squash()

◆ takeOverFrom()

◆ violation()

◆ wakeDependents()

Member Data Documentation

◆ _name

◆ depPred

◆ id

◆ instList

◆ instsToReplay

◆ iqPtr

◆ loadBarrierSNs

◆ memDepHash

◆ stats

◆ storeBarrierSNs

template<class MemDepPred, class Impl>
class MemDepUnit< MemDepPred, Impl >