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(MachineInstr &MI, MachineInstr *PrevMI);
198   SuitabilityResult isSuitableMemoryOp(MachineInstr &MI, unsigned PointerReg,
199                                        ArrayRef<MachineInstr *> PrevInsts);
204   bool canHoistInst(MachineInstr *FaultingMI, unsigned PointerReg,
205                     ArrayRef<MachineInstr *> InstsSeenSoFar,
206                     MachineBasicBlock *NullSucc, MachineInstr *&Dependence);
230 bool ImplicitNullChecks::canHandle(const MachineInstr *MI) {  in canHandle()
244 ImplicitNullChecks::computeDependence(const MachineInstr *MI,  in computeDependence()
245                                       ArrayRef<MachineInstr *> Block) {  in computeDependence()
249   Optional<ArrayRef<MachineInstr *>::iterator> Dep;  in computeDependence()
267 bool ImplicitNullChecks::canReorder(const MachineInstr *A,  in canReorder()
268                                     const MachineInstr *B) {  in canReorder()
322 ImplicitNullChecks::areMemoryOpsAliased(MachineInstr &MI,  in areMemoryOpsAliased()
323                                         MachineInstr *PrevMI) {  in areMemoryOpsAliased()
360 ImplicitNullChecks::isSuitableMemoryOp(MachineInstr &MI, unsigned PointerReg,  in isSuitableMemoryOp()
361                                        ArrayRef<MachineInstr *> PrevInsts) {  in isSuitableMemoryOp()
386 bool ImplicitNullChecks::canHoistInst(MachineInstr *FaultingMI,  in canHoistInst()
388                                       ArrayRef<MachineInstr *> InstsSeenSoFar,  in canHoistInst()
390                                       MachineInstr *&Dependence) {  in canHoistInst()
579   SmallVector<MachineInstr *, 8> InstsSeenSoFar;  in analyzeBlockForNullChecks()
585     MachineInstr *Dependence;  in analyzeBlockForNullChecks()
612 MachineInstr *ImplicitNullChecks::insertFaultingInstr(  in insertFaultingInstr()
613     MachineInstr *MI, MachineBasicBlock *MBB, MachineBasicBlock *HandlerMBB) {  in insertFaultingInstr()
679     MachineInstr *FaultingInstr = insertFaultingInstr(  in rewriteNullChecks()