168       auto &Copy = I.first->second;  in trackCopy()  local
169       if (!is_contained(Copy.DefRegs, Def))  in trackCopy()
170         Copy.DefRegs.push_back(Def);  in trackCopy()
281   bool eraseIfRedundant(MachineInstr &Copy, MCRegister Src, MCRegister Def);
284   bool isForwardableRegClassCopy(const MachineInstr &Copy,
286   bool isBackwardPropagatableRegClassCopy(const MachineInstr &Copy,
319     if (MachineInstr *Copy = Tracker.findCopyForUnit(*RUI, *TRI)) {  in ReadRegister()  local
321         LLVM_DEBUG(dbgs() << "MCP: Copy is used - not dead: "; Copy->dump());  in ReadRegister()
322         MaybeDeadCopies.remove(Copy);  in ReadRegister()
324         CopyDbgUsers[Copy].insert(&Reader);  in ReadRegister()
351 bool MachineCopyPropagation::eraseIfRedundant(MachineInstr &Copy,  in eraseIfRedundant()  argument
359   MachineInstr *PrevCopy = Tracker.findAvailCopy(Copy, Def, *TRI);  in eraseIfRedundant()
369   LLVM_DEBUG(dbgs() << "MCP: copy is a NOP, removing: "; Copy.dump());  in eraseIfRedundant()
373   assert(Copy.isCopy());  in eraseIfRedundant()
374   Register CopyDef = Copy.getOperand(0).getReg();  in eraseIfRedundant()
377        make_range(PrevCopy->getIterator(), Copy.getIterator()))  in eraseIfRedundant()
380   Copy.eraseFromParent();  in eraseIfRedundant()
387     const MachineInstr &Copy, const MachineInstr &UseI, unsigned UseIdx) {  in isBackwardPropagatableRegClassCopy()  argument
388   Register Def = Copy.getOperand(0).getReg();  in isBackwardPropagatableRegClassCopy()
402 bool MachineCopyPropagation::isForwardableRegClassCopy(const MachineInstr &Copy,  in isForwardableRegClassCopy()  argument
406   Register CopySrcReg = Copy.getOperand(1).getReg();  in isForwardableRegClassCopy()
508     MachineInstr *Copy =  in forwardUses()  local
510     if (!Copy)  in forwardUses()
513     Register CopyDstReg = Copy->getOperand(0).getReg();  in forwardUses()
514     const MachineOperand &CopySrc = Copy->getOperand(1);  in forwardUses()
529     if (!isForwardableRegClassCopy(*Copy, MI, OpIdx))  in forwardUses()
552                       << "\n     in " << MI << "     from " << *Copy);  in forwardUses()
562          make_range(Copy->getIterator(), std::next(MI.getIterator())))  in forwardUses()
791     MachineInstr *Copy =  in propagateDefs()  local
793     if (!Copy)  in propagateDefs()
796     Register Def = Copy->getOperand(0).getReg();  in propagateDefs()
797     Register Src = Copy->getOperand(1).getReg();  in propagateDefs()
802     if (!isBackwardPropagatableRegClassCopy(*Copy, MI, OpIdx))  in propagateDefs()
813                       << MI << "     from " << *Copy);  in propagateDefs()
816     MODef.setIsRenamable(Copy->getOperand(0).isRenamable());  in propagateDefs()
819     MaybeDeadCopies.insert(Copy);  in propagateDefs()
880             if (auto *Copy = Tracker.findCopyDefViaUnit(*RUI, *TRI)) {  in BackwardCopyPropagateBlock()  local
881               CopyDbgUsers[Copy].insert(MI);  in BackwardCopyPropagateBlock()
891   for (auto *Copy : MaybeDeadCopies) {  in BackwardCopyPropagateBlock()  local
893     Register Src = Copy->getOperand(1).getReg();  in BackwardCopyPropagateBlock()
894     Register Def = Copy->getOperand(0).getReg();  in BackwardCopyPropagateBlock()
895     SmallVector<MachineInstr *> MaybeDeadDbgUsers(CopyDbgUsers[Copy].begin(),  in BackwardCopyPropagateBlock()
896                                                   CopyDbgUsers[Copy].end());  in BackwardCopyPropagateBlock()
899     Copy->eraseFromParent();  in BackwardCopyPropagateBlock()