83   static bool canHandle(const MachineInstr *MI);
88   bool canReorder(const MachineInstr *A, const MachineInstr *B);
101     Optional<ArrayRef<MachineInstr *>::iterator> PotentialDependence;
105         Optional<ArrayRef<MachineInstr *>::iterator> PotentialDependence)  in DependenceResult()
117   DependenceResult computeDependence(const MachineInstr *MI,
118                                      ArrayRef<MachineInstr *> Block);
123     MachineInstr *MemOperation;
126     MachineInstr *CheckOperation;
139     MachineInstr *OnlyDependency;
142     explicit NullCheck(MachineInstr *memOperation, MachineInstr *checkOperation,  in NullCheck()
146                        MachineInstr *onlyDependency)  in NullCheck()
151     MachineInstr *getMemOperation() const { return MemOperation; }  in getMemOperation()
153     MachineInstr *getCheckOperation() const { return CheckOperation; }  in getCheckOperation()
161     MachineInstr *getOnlyDependency() const { return OnlyDependency; }  in getOnlyDependency()
171   MachineInstr *insertFaultingInstr(MachineInstr *MI, MachineBasicBlock *MBB,
184   AliasResult areMemoryOpsAliased(const MachineInstr &MI,
185                                   const MachineInstr *PrevMI) const;
199   SuitabilityResult isSuitableMemoryOp(const MachineInstr &MI,
201                                        ArrayRef<MachineInstr *> PrevInsts);
206   bool canDependenceHoistingClobberLiveIns(MachineInstr *DependenceMI,
212   bool canHoistInst(MachineInstr *FaultingMI,
213                     ArrayRef<MachineInstr *> InstsSeenSoFar,
214                     MachineBasicBlock *NullSucc, MachineInstr *&Dependence);
238 bool ImplicitNullChecks::canHandle(const MachineInstr *MI) {  in canHandle()
253 ImplicitNullChecks::computeDependence(const MachineInstr *MI,  in computeDependence()
254                                       ArrayRef<MachineInstr *> Block) {  in computeDependence()
258   Optional<ArrayRef<MachineInstr *>::iterator> Dep;  in computeDependence()
276 bool ImplicitNullChecks::canReorder(const MachineInstr *A,  in canReorder()
277                                     const MachineInstr *B) {  in canReorder()
331 ImplicitNullChecks::areMemoryOpsAliased(const MachineInstr &MI,  in areMemoryOpsAliased()
332                                         const MachineInstr *PrevMI) const {  in areMemoryOpsAliased()
366 ImplicitNullChecks::isSuitableMemoryOp(const MachineInstr &MI,  in isSuitableMemoryOp()
368                                        ArrayRef<MachineInstr *> PrevInsts) {  in isSuitableMemoryOp()
407     MachineInstr *ModifyingMI = nullptr;  in isSuitableMemoryOp()
410       const MachineInstr *CurrMI = &*It;  in isSuitableMemoryOp()
412         ModifyingMI = const_cast<MachineInstr *>(CurrMI);  in isSuitableMemoryOp()
482     MachineInstr *DependenceMI, MachineBasicBlock *NullSucc) {  in canDependenceHoistingClobberLiveIns()
513 bool ImplicitNullChecks::canHoistInst(MachineInstr *FaultingMI,  in canHoistInst()
514                                       ArrayRef<MachineInstr *> InstsSeenSoFar,  in canHoistInst()
516                                       MachineInstr *&Dependence) {  in canHoistInst()
678   SmallVector<MachineInstr *, 8> InstsSeenSoFar;  in analyzeBlockForNullChecks()
684     MachineInstr *Dependence;  in analyzeBlockForNullChecks()
709 MachineInstr *ImplicitNullChecks::insertFaultingInstr(  in insertFaultingInstr()
710     MachineInstr *MI, MachineBasicBlock *MBB, MachineBasicBlock *HandlerMBB) {  in insertFaultingInstr()
776     MachineInstr *FaultingInstr = insertFaultingInstr(  in rewriteNullChecks()