int GProcessor::issue(PipeQueue &pipeQ)
{
int i=0; // Instructions executed counter
int j=0; // Fake Instructions counter
I(!pipeQ.instQueue.empty());
if(!replayQ.empty()) {
issueFromReplayQ();
nStall[ReplayStall]->add(RealisticWidth);
return 0; // we issued 0 from the instQ;
// FIXME:check if we can issue from replayQ and
// fetchQ during the same cycle
}
do{
IBucket *bucket = pipeQ.instQueue.top();
do{
I(!bucket->empty());
if( i >= IssueWidth ) {
return i+j;
}
I(!bucket->empty());
DInst *dinst = bucket->top();
#ifdef TASKSCALAR
if (!dinst->isFake()) {
if (dinst->getLVID()==0 || dinst->getLVID()->isKilled()) {
// Task got killed. Just swallow the instruction
dinst->killSilently();
bucket->pop();
j++;
continue;
}
}
#endif
StallCause c = addInst(dinst);
if (c != NoStall) {
if (i < RealisticWidth)
nStall[c]->add(RealisticWidth - i);
return i+j;
}
i++;
bucket->pop();
}while(!bucket->empty());
pipeQ.pipeLine.doneItem(bucket);
pipeQ.instQueue.pop();
}while(!pipeQ.instQueue.empty());
return i+j;
}
int32_t GProcessor::issue(PipeQueue &pipeQ)
{
int32_t i=0; // Instructions executed counter
int32_t j=0; // Fake Instructions counter
I(!pipeQ.instQueue.empty());
if(!replayQ.empty()) {
issueFromReplayQ();
nStall[ReplayStall]->add(RealisticWidth);
return 0; // we issued 0 from the instQ;
// FIXME:check if we can issue from replayQ and
// fetchQ during the same cycle
}
do {
IBucket *bucket = pipeQ.instQueue.top();
do {
I(!bucket->empty());
if( i >= IssueWidth ) {
return i+j;
}
I(!bucket->empty());
DInst *dinst = bucket->top();
StallCause c = addInst(dinst);
if (c != NoStall) {
if (i < RealisticWidth)
nStall[c]->add(RealisticWidth - i);
return i+j;
}
i++;
bucket->pop();
} while(!bucket->empty());
pipeQ.pipeLine.doneItem(bucket);
pipeQ.instQueue.pop();
} while(!pipeQ.instQueue.empty());
return i+j;
}
