+char &llvm::PostRASchedulerID = PostRAScheduler::ID;
+
+INITIALIZE_PASS(PostRAScheduler, "post-RA-sched",
+ "Post RA top-down list latency scheduler", false, false)
+
+SchedulePostRATDList::SchedulePostRATDList(
+ MachineFunction &MF, MachineLoopInfo &MLI, MachineDominatorTree &MDT,
+ AliasAnalysis *AA, const RegisterClassInfo &RCI,
+ TargetSubtargetInfo::AntiDepBreakMode AntiDepMode,
+ SmallVectorImpl<const TargetRegisterClass*> &CriticalPathRCs)
+ : ScheduleDAGInstrs(MF, MLI, MDT, /*IsPostRA=*/true), AA(AA),
+ LiveRegs(TRI->getNumRegs())
+{
+ const TargetMachine &TM = MF.getTarget();
+ const InstrItineraryData *InstrItins = TM.getInstrItineraryData();
+ HazardRec =
+ TM.getInstrInfo()->CreateTargetPostRAHazardRecognizer(InstrItins, this);
+
+ assert((AntiDepMode == TargetSubtargetInfo::ANTIDEP_NONE ||
+ MRI.tracksLiveness()) &&
+ "Live-ins must be accurate for anti-dependency breaking");
+ AntiDepBreak =
+ ((AntiDepMode == TargetSubtargetInfo::ANTIDEP_ALL) ?
+ (AntiDepBreaker *)new AggressiveAntiDepBreaker(MF, RCI, CriticalPathRCs) :
+ ((AntiDepMode == TargetSubtargetInfo::ANTIDEP_CRITICAL) ?
+ (AntiDepBreaker *)new CriticalAntiDepBreaker(MF, RCI) : NULL));
+}
+
+SchedulePostRATDList::~SchedulePostRATDList() {
+ delete HazardRec;
+ delete AntiDepBreak;
+}
+
+/// Initialize state associated with the next scheduling region.
+void SchedulePostRATDList::enterRegion(MachineBasicBlock *bb,
+ MachineBasicBlock::iterator begin,
+ MachineBasicBlock::iterator end,
+ unsigned endcount) {
+ ScheduleDAGInstrs::enterRegion(bb, begin, end, endcount);
+ Sequence.clear();
+}
+
+/// Print the schedule before exiting the region.
+void SchedulePostRATDList::exitRegion() {
+ DEBUG({
+ dbgs() << "*** Final schedule ***\n";
+ dumpSchedule();
+ dbgs() << '\n';
+ });
+ ScheduleDAGInstrs::exitRegion();
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+/// dumpSchedule - dump the scheduled Sequence.
+void SchedulePostRATDList::dumpSchedule() const {
+ for (unsigned i = 0, e = Sequence.size(); i != e; i++) {
+ if (SUnit *SU = Sequence[i])
+ SU->dump(this);
+ else
+ dbgs() << "**** NOOP ****\n";
+ }
+}
+#endif
+