BPredUnit::PredictorHistory Struct Reference

Public Member Functions
	PredictorHistory (const InstSeqNum &seq_num, Addr instPC, bool pred_taken, void *bp_history, void *indirect_history, ThreadID _tid, const StaticInstPtr &inst)
	Makes a predictor history struct that contains any information needed to update the predictor, BTB, and RAS. More...
bool	operator== (const PredictorHistory &entry) const

Public Attributes
InstSeqNum	seqNum
	The sequence number for the predictor history entry. More...
Addr	pc
	The PC associated with the sequence number. More...
void *	bpHistory
	Pointer to the history object passed back from the branch predictor. More...
void *	indirectHistory
TheISA::PCState	RASTarget
	The RAS target (only valid if a return). More...
unsigned	RASIndex
	The RAS index of the instruction (only valid if a call). More...
ThreadID	tid
	The thread id. More...
bool	predTaken
	Whether or not it was predicted taken. More...
bool	usedRAS
	Whether or not the RAS was used. More...
bool	pushedRAS
bool	wasCall
	Whether or not the instruction was a call. More...
bool	wasReturn
	Whether or not the instruction was a return. More...
bool	wasIndirect
	Wether this instruction was an indirect branch. More...
Addr	target
	Target of the branch. More...
const StaticInstPtr	inst
	The branch instrction. More...

Detailed Description

Definition at line 188 of file bpred_unit.hh.

Constructor & Destructor Documentation

PredictorHistory()

BPredUnit::PredictorHistory::PredictorHistory ( const InstSeqNum &  seq_num, Addr  instPC, bool  pred_taken, void *  bp_history, void *  indirect_history, ThreadID  _tid, const StaticInstPtr &  inst  )

inline

Makes a predictor history struct that contains any information needed to update the predictor, BTB, and RAS.

Definition at line 193 of file bpred_unit.hh.

Member Function Documentation

operator==()

bool BPredUnit::PredictorHistory::operator== ( const PredictorHistory &  entry ) const

inline

Definition at line 204 of file bpred_unit.hh.

References seqNum.

Member Data Documentation

bpHistory

void* BPredUnit::PredictorHistory::bpHistory

Pointer to the history object passed back from the branch predictor.

It is used to update or restore state of the branch predictor.

Definition at line 218 of file bpred_unit.hh.

indirectHistory

void* BPredUnit::PredictorHistory::indirectHistory

Definition at line 220 of file bpred_unit.hh.

inst

const StaticInstPtr BPredUnit::PredictorHistory::inst

The branch instrction.

Definition at line 255 of file bpred_unit.hh.

pc

Addr BPredUnit::PredictorHistory::pc

The PC associated with the sequence number.

Definition at line 212 of file bpred_unit.hh.

predTaken

bool BPredUnit::PredictorHistory::predTaken

Whether or not it was predicted taken.

Definition at line 232 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

pushedRAS

bool BPredUnit::PredictorHistory::pushedRAS

Definition at line 238 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

RASIndex

unsigned BPredUnit::PredictorHistory::RASIndex

The RAS index of the instruction (only valid if a call).

Definition at line 226 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

RASTarget

TheISA::PCState BPredUnit::PredictorHistory::RASTarget

The RAS target (only valid if a return).

Definition at line 223 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

seqNum

InstSeqNum BPredUnit::PredictorHistory::seqNum

The sequence number for the predictor history entry.

Definition at line 209 of file bpred_unit.hh.

Referenced by operator==().

target

Addr BPredUnit::PredictorHistory::target

Target of the branch.

First it is predicted, and fixed later if necessary

Definition at line 252 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

tid

ThreadID BPredUnit::PredictorHistory::tid

The thread id.

Definition at line 229 of file bpred_unit.hh.

usedRAS

bool BPredUnit::PredictorHistory::usedRAS

Whether or not the RAS was used.

Definition at line 235 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

wasCall

bool BPredUnit::PredictorHistory::wasCall

Whether or not the instruction was a call.

Definition at line 241 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

wasIndirect

bool BPredUnit::PredictorHistory::wasIndirect

Wether this instruction was an indirect branch.

Definition at line 247 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

wasReturn

bool BPredUnit::PredictorHistory::wasReturn

Whether or not the instruction was a return.

Definition at line 244 of file bpred_unit.hh.

Referenced by BPredUnit::predict().

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The documentation for this struct was generated from the following file:

• cpu/pred/bpred_unit.hh