// Look for dependent instructions on the same cluster (do not wakeup,
// just get the time)
void DepWindow::wakeUpDeps(DInst *dinst) {
I(!dinst->hasDeps());
// Even if it does not wakeup instructions the port is used
Time_t wakeUpTime= wakeUpPort->nextSlot(dinst->getStatsFlag());
//dinst->dump("Clearing:");
dinst->clearRATEntry(); // Not much impact for OoO, mostly for InOrder
if (!dinst->hasPending())
return;
// NEVER HERE FOR in-order cores
wakeUpTime += WakeUpDelay;
I(dinst->getCluster());
I(srcCluster == dinst->getCluster());
I(dinst->hasPending());
for(const DInstNext *it = dinst->getFirst();
it ;
it = it->getNext() ) {
DInst *dstReady = it->getDInst();
const Cluster *dstCluster = dstReady->getCluster();
I(dstCluster); // all the instructions should have a resource after rename stage
if (dstCluster == srcCluster && dstReady->getWakeUpTime() < wakeUpTime)
dstReady->setWakeUpTime(wakeUpTime);
}
}
// Called when dinst finished execution. Look for dependent to wakeUp
void DepWindow::executed(DInst *dinst) {
// MSG("execute [0x%x] @%lld",dinst, globalClock);
I(!dinst->hasDeps());
//dinst->dump("Clearing2:");
dinst->clearRATEntry();
if (!dinst->hasPending())
return;
// NEVER HERE FOR in-order cores
I(dinst->getCluster());
I(srcCluster == dinst->getCluster());
// Only until reaches last. The instructions that are from another processor
// should be added again to the dependence chain so that MemRequest::ack can
// awake them (other processor instructions)
const DInst *stopAtDst = 0;
I(dinst->isIssued());
while (dinst->hasPending()) {
if (stopAtDst == dinst->getFirstPending())
break;
DInst *dstReady = dinst->getNextPending();
I(dstReady);
#if 0
if (!dstReady->isIssued()) {
I(dinst->getInst()->isStore());
I(!dstReady->hasDeps());
continue;
}
#endif
I(!dstReady->isExecuted());
if (!dstReady->hasDeps()) {
// Check dstRes because dstReady may not be issued
I(dstReady->getCluster());
const Cluster *dstCluster = dstReady->getCluster();
I(dstCluster);
Time_t when = wakeUpPort->nextSlot(dinst->getStatsFlag());
if (dstCluster != srcCluster) {
wrForwardBus.inc(dinst->getStatsFlag());
when += InterClusterLat;
}
dstReady->setWakeUpTime(when);
preSelect(dstReady);
}
}
}
