// unit latency (defaultDefLatency may be too conservative).
#ifndef NDEBUG
if (SCDesc->isValid() && !DefMI->getOperand(DefOperIdx).isImplicit()
- && !DefMI->getDesc().OpInfo[DefOperIdx].isOptionalDef()) {
+ && !DefMI->getDesc().OpInfo[DefOperIdx].isOptionalDef()
+ && SchedModel.isComplete()) {
std::string Err;
raw_string_ostream ss(Err);
ss << "DefIdx " << DefIdx << " exceeds machine model writes for "
return DefMI->isTransient() ? 0 : TII->defaultDefLatency(&SchedModel, DefMI);
}
-unsigned TargetSchedModel::computeInstrLatency(const MachineInstr *MI) const {
+unsigned
+TargetSchedModel::computeInstrLatency(const MachineInstr *MI,
+ bool UseDefaultDefLatency) const {
// For the itinerary model, fall back to the old subtarget hook.
// Allow subtargets to compute Bundle latencies outside the machine model.
- if (hasInstrItineraries() || MI->isBundle())
+ if (hasInstrItineraries() || MI->isBundle() ||
+ (!hasInstrSchedModel() && !UseDefaultDefLatency))
return TII->getInstrLatency(&InstrItins, MI);
if (hasInstrSchedModel()) {