197       auto &Copy = I.first->second;  in trackCopy()  local
198       if (!is_contained(Copy.DefRegs, Def))  in trackCopy()
199         Copy.DefRegs.push_back(Def);  in trackCopy()
327   bool eraseIfRedundant(MachineInstr &Copy, MCRegister Src, MCRegister Def);
330   bool isForwardableRegClassCopy(const MachineInstr &Copy,
332   bool isBackwardPropagatableRegClassCopy(const MachineInstr &Copy,
365     if (MachineInstr *Copy = Tracker.findCopyForUnit(*RUI, *TRI)) {  in ReadRegister()  local
367         LLVM_DEBUG(dbgs() << "MCP: Copy is used - not dead: "; Copy->dump());  in ReadRegister()
368         MaybeDeadCopies.remove(Copy);  in ReadRegister()
370         CopyDbgUsers[Copy].insert(&Reader);  in ReadRegister()
401 bool MachineCopyPropagation::eraseIfRedundant(MachineInstr &Copy,  in eraseIfRedundant()  argument
410       Tracker.findAvailCopy(Copy, Def, *TRI, *TII, UseCopyInstr);  in eraseIfRedundant()
421   LLVM_DEBUG(dbgs() << "MCP: copy is a NOP, removing: "; Copy.dump());  in eraseIfRedundant()
425   Optional<DestSourcePair> CopyOperands = isCopyInstr(Copy, *TII, UseCopyInstr);  in eraseIfRedundant()
431        make_range(PrevCopy->getIterator(), Copy.getIterator()))  in eraseIfRedundant()
434   Copy.eraseFromParent();  in eraseIfRedundant()
441     const MachineInstr &Copy, const MachineInstr &UseI, unsigned UseIdx) {  in isBackwardPropagatableRegClassCopy()  argument
443   Optional<DestSourcePair> CopyOperands = isCopyInstr(Copy, *TII, UseCopyInstr);  in isBackwardPropagatableRegClassCopy()
458 bool MachineCopyPropagation::isForwardableRegClassCopy(const MachineInstr &Copy,  in isForwardableRegClassCopy()  argument
462   Optional<DestSourcePair> CopyOperands = isCopyInstr(Copy, *TII, UseCopyInstr);  in isForwardableRegClassCopy()
585     MachineInstr *Copy = Tracker.findAvailCopy(MI, MOUse.getReg().asMCReg(),  in forwardUses()  local
587     if (!Copy)  in forwardUses()
591         isCopyInstr(*Copy, *TII, UseCopyInstr);  in forwardUses()
608     if (!isForwardableRegClassCopy(*Copy, MI, OpIdx))  in forwardUses()
632                       << "\n     in " << MI << "     from " << *Copy);  in forwardUses()
643          make_range(Copy->getIterator(), std::next(MI.getIterator())))  in forwardUses()
885     MachineInstr *Copy = Tracker.findAvailBackwardCopy(  in propagateDefs()  local
887     if (!Copy)  in propagateDefs()
891         isCopyInstr(*Copy, *TII, UseCopyInstr);  in propagateDefs()
898     if (!isBackwardPropagatableRegClassCopy(*Copy, MI, OpIdx))  in propagateDefs()
909                       << MI << "     from " << *Copy);  in propagateDefs()
915     MaybeDeadCopies.insert(Copy);  in propagateDefs()
976             if (auto *Copy = Tracker.findCopyDefViaUnit(*RUI, *TRI)) {  in BackwardCopyPropagateBlock()  local
977               CopyDbgUsers[Copy].insert(&MI);  in BackwardCopyPropagateBlock()
988   for (auto *Copy : MaybeDeadCopies) {  in BackwardCopyPropagateBlock()  local
991         isCopyInstr(*Copy, *TII, UseCopyInstr);  in BackwardCopyPropagateBlock()
994     SmallVector<MachineInstr *> MaybeDeadDbgUsers(CopyDbgUsers[Copy].begin(),  in BackwardCopyPropagateBlock()
995                                                   CopyDbgUsers[Copy].end());  in BackwardCopyPropagateBlock()
998     Copy->eraseFromParent();  in BackwardCopyPropagateBlock()