91 static Optional<DestSourcePair> isCopyInstr(const MachineInstr &MI,  in isCopyInstr()
98     return Optional<DestSourcePair>(  in isCopyInstr()
99         DestSourcePair{MI.getOperand(0), MI.getOperand(1)});  in isCopyInstr()
140           Optional<DestSourcePair> CopyOperands =  in invalidateRegister()
169           Optional<DestSourcePair> CopyOperands =  in clobberRegister()
183     Optional<DestSourcePair> CopyOperands = isCopyInstr(*MI, TII, UseCopyInstr);  in trackCopy()
239     Optional<DestSourcePair> CopyOperands =  in findAvailBackwardCopy()
269     Optional<DestSourcePair> CopyOperands =  in findAvailCopy()
386   Optional<DestSourcePair> CopyOperands =  in isNopCopy()
425   Optional<DestSourcePair> CopyOperands = isCopyInstr(Copy, *TII, UseCopyInstr);  in eraseIfRedundant()
443   Optional<DestSourcePair> CopyOperands = isCopyInstr(Copy, *TII, UseCopyInstr);  in isBackwardPropagatableRegClassCopy()
462   Optional<DestSourcePair> CopyOperands = isCopyInstr(Copy, *TII, UseCopyInstr);  in isForwardableRegClassCopy()
590     Optional<DestSourcePair> CopyOperands =  in forwardUses()
657     Optional<DestSourcePair> CopyOperands = isCopyInstr(MI, *TII, UseCopyInstr);  in ForwardCopyPropagateBlock()
780         Optional<DestSourcePair> CopyOperands =  in ForwardCopyPropagateBlock()
819       Optional<DestSourcePair> CopyOperands =  in ForwardCopyPropagateBlock()
848   Optional<DestSourcePair> CopyOperands = isCopyInstr(MI, TII, UseCopyInstr);  in isBackwardPropagatableCopy()
890     Optional<DestSourcePair> CopyOperands =  in propagateDefs()
928     Optional<DestSourcePair> CopyOperands = isCopyInstr(MI, *TII, UseCopyInstr);  in BackwardCopyPropagateBlock()
990     Optional<DestSourcePair> CopyOperands =  in BackwardCopyPropagateBlock()