C++ (Cpp) Resource::canIssue Beispiele

Beispiel #1

Datei: GProcessor.cpp Projekt: hdl/SuperTrans

StallCause GProcessor::sharedAddInst(DInst *dinst) 
{
  // rename an instruction. Steps:
  //
  // 1-Get a ROB entry
  //
  // 2-Get a register
  //
  // 3-Try to schedule in Resource (window entry...)

  if( ROB.size() >= MaxROBSize ) {
    return SmallROBStall;
  }
  
#if SESC_INORDER
  if (switching) {
    if(!ROB.empty())
      return SwitchStall; // New stall Type to add
    switching = false;
  } 
#endif
  
  const Instruction *inst = dinst->getInst();

  // Register count
  I(inst->getDstPool()<3);
#ifdef SESC_MISPATH
  if ((regPool[inst->getDstPool()] - misRegPool[inst->getDstPool()]) == 0)
    return SmallREGStall;
#else
  if (regPool[inst->getDstPool()] == 0)
    return SmallREGStall;
#endif

  Resource *res = clusterManager.getResource(inst->getOpcode());
  I(res);

  const Cluster *cluster = res->getCluster();
  StallCause sc = cluster->canIssue(dinst);
  if (sc != NoStall)
    return sc;

  sc = res->canIssue(dinst);
  if (sc != NoStall)
    return sc;

  // BEGIN INSERTION (note that schedule already inserted in the window)
  dinst->markIssued();

#ifdef SESC_BAAD
  dinst->setRenameTime();
#endif

#ifdef SESC_MISPATH
  if (dinst->isFake()) {
    nInstFake[inst->getOpcode()]->inc();
    misRegPool[inst->getDstPool()]++;
  }else{
    nInst[inst->getOpcode()]->inc();
    regPool[inst->getDstPool()]--;
  }
#else
  nInst[inst->getOpcode()]->inc();
  regPool[inst->getDstPool()]--;
#endif

  renameEnergy->inc(); // Rename RAT
  robEnergy->inc(); // one for insert

  rdRegEnergy[inst->getSrc1Pool()]->inc();
  rdRegEnergy[inst->getSrc2Pool()]->inc();
  wrRegEnergy[inst->getDstPool()]->inc();

  ROB.push(dinst);


  dinst->setResource(res);

  return NoStall;
}