CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp

78   SUnit *SU = &SUnits.back();
83     SU->SchedulingPref = Sched::None;
85     SU->SchedulingPref = TLI.getSchedulingPreference(N);
86   return SU;
90   SUnit *SU = newSUnit(Old->getNode());
91   SU->OrigNode = Old->OrigNode;
92   SU->Latency = Old->Latency;
93   SU->isVRegCycle = Old->isVRegCycle;
94   SU->isCall = Old->isCall;
95   SU->isCallOp = Old->isCallOp;
96   SU->isTwoAddress = Old->isTwoAddress;
97   SU->isCommutable = Old->isCommutable;
98   SU->hasPhysRegDefs = Old->hasPhysRegDefs;
99   SU->hasPhysRegClobbers = Old->hasPhysRegClobbers;
100   SU->isScheduleHigh = Old->isScheduleHigh;
101   SU->isScheduleLow = Old->isScheduleLow;
102   SU->SchedulingPref = Old->SchedulingPref;
104   return SU;
413     SUnit *SU = CallSUnits.pop_back_val();
414     for (const SDNode *SUNode = SU->getNode(); SUNode;
434     SUnit *SU = &SUnits[su];
435     SDNode *MainNode = SU->getNode();
442           SU->isTwoAddress = true;
447         SU->isCommutable = true;
451     for (SDNode *N = SU->getNode(); N; N = N->getGluedNode()) {
454         SU->hasPhysRegClobbers = true;
459           SU->hasPhysRegDefs = true;
467         if (OpSU == SU) continue;           // In the same group.
498           ST.adjustSchedDependency(OpSU, SU, Dep);
501         if (!SU->addPred(Dep) && !Dep.isCtrl() && OpSU->NumRegDefsLeft > 1) {
557 ScheduleDAGSDNodes::RegDefIter::RegDefIter(const SUnit *SU,
559   : SchedDAG(SD), Node(SU->getNode()), DefIdx(0), NodeNumDefs(0) {
582 void ScheduleDAGSDNodes::InitNumRegDefsLeft(SUnit *SU) {
583   assert(SU->NumRegDefsLeft == 0 && "expect a new node");
584   for (RegDefIter I(SU, this); I.IsValid(); I.Advance()) {
585     assert(SU->NumRegDefsLeft < USHRT_MAX && "overflow is ok but unexpected");
586     ++SU->NumRegDefsLeft;
590 void ScheduleDAGSDNodes::computeLatency(SUnit *SU) {
591   SDNode *N = SU->getNode();
597     SU->Latency = 0;
603     SU->Latency = 1;
610       SU->Latency = HighLatencyCycles;
612       SU->Latency = 1;
618   SU->Latency = 0;
619   for (SDNode *N = SU->getNode(); N; N = N->getGluedNode())
621       SU->Latency += TII->getInstrLatency(InstrItins, N);
651 void ScheduleDAGSDNodes::dumpNode(const SUnit *SU) const {
653   if (!SU->getNode()) {
658   SU->getNode()->dump(DAG);
661   for (SDNode *N = SU->getNode()->getGluedNode(); N; N = N->getGluedNode())
675     if (SUnit *SU = Sequence[i])
676       SU->dump(this);
757 EmitPhysRegCopy(SUnit *SU, DenseMap<SUnit*, unsigned> &VRBaseMap,
759   for (SUnit::const_pred_iterator I = SU->Preds.begin(), E = SU->Preds.end();
768       for (SUnit::const_succ_iterator II = SU->Succs.begin(),
769              EE = SU->Succs.end(); II != EE; ++II) {
781       unsigned VRBase = MRI.createVirtualRegister(SU->CopyDstRC);
782       bool isNew = VRBaseMap.insert(std::make_pair(SU, VRBase)).second;
817     SUnit *SU = Sequence[i];
818     if (!SU) {
826     if (!SU->getNode()) {
828       EmitPhysRegCopy(SU, CopyVRBaseMap, InsertPos);
833     for (SDNode *N = SU->getNode()->getGluedNode(); N; N = N->getGluedNode())
837       Emitter.EmitNode(GluedNodes.back(), SU->OrigNode != SU, SU->isCloned,
844     Emitter.EmitNode(SU->getNode(), SU->OrigNode != SU, SU->isCloned,
848       ProcessSourceNode(SU->getNode(), DAG, Emitter, VRBaseMap, Orders,