DInst *DInst::clone()
{
#if (defined MIPS_EMUL)
DInst *newDInst = createDInst(inst, vaddr, cId, context);
#else
#if (defined TLS)
DInst *newDInst = createDInst(inst, vaddr, cId, myEpoch);
#else
DInst *newDInst = createDInst(inst, vaddr, cId);
#endif // Else of (defined TLS)
#endif // Else of (defined MIPS_EMUL)
#ifdef TASKSCALAR
// setting the LVID for the cloned instruction
// this will call incOutsReqs for the HVersion.
newDInst->setLVID(lvid, lvidVersion);
#endif
#ifdef SESC_BAAD
I(0);
#endif
return newDInst;
}
void FetchEngine::realFetch(IBucket *bucket, int fetchMax)
{
int n2Fetched=fetchMax > 0 ? fetchMax : FetchWidth;
maxBB = BB4Cycle; // Reset the max number of BB to fetch in this cycle (decreased in processBranch)
// This method only can be called once per cycle or the restriction of the
// BB4Cycle would not enforced
I(pid>=0);
I(maxBB>0);
I(bucket->empty());
I(missInstID==0);
Pid_t myPid = flow.currentPid();
#ifdef TASKSCALAR
TaskContext *tc = TaskContext::getTaskContext(myPid);
I(tc);
GLVID *lvid = gms->findCreateLVID(tc->getVersion());
if (lvid==0) {
// Not enough LVIDs. Stall fetch
I(missInstID==0);
nDelayInst2.add(n2Fetched);
return;
}
HVersion *lvidVersion = tc->getVersion(); // no duplicate
#endif
do {
nGradInsts++; // Before executePC because it can trigger a context switch
DInst *dinst = flow.executePC();
if (dinst == 0)
break;
// If we are stalled, then this instruction will issue again so we do not
// want to count this one
#if (defined TM)
if(transGCM->checkStall(myPid))
{
delete(dinst);
dinst==0;
break;
}
else
tmReport->registerTransInstAbort(myPid,dinst->transType);
#endif
#ifdef TASKSCALAR
dinst->setLVID(lvid, lvidVersion);
#endif //TASKSCALAR
const Instruction *inst = dinst->getInst();
#if !(defined MIPS_EMUL)
if (inst->isStore()) {
#if (defined TLS)
dinst->getEpoch()->pendInstr();
dinst->getEpoch()->execInstr();
#endif // (defined TLS)
}
#endif // For !(defined MIPS_EMUL)
instFetched(dinst);
bucket->push(dinst);
#ifdef XACTION
gproc->getXactionManager()->dinstFetch(dinst);
#endif
n2Fetched--;
bbSize++;
fbSize++;
if(inst->isBranch()) {
szBB.sample(bbSize);
bbSize=0;
if (!processBranch(dinst, n2Fetched)) {
break;
}
}
}while(n2Fetched>0 && flow.currentPid()==myPid);
#ifdef TASKSCALAR
if (!bucket->empty())
lvid->garbageCollect();
#endif
ushort tmp = FetchWidth - n2Fetched;
totalnInst+=tmp;
if( totalnInst >= nInst2Sim ) {
MSG("stopSimulation at %lld (%lld)",totalnInst, nInst2Sim);
osSim->stopSimulation();
}
nFetched.add(tmp);
}
