240                      RegDefsUses &RegDU, InspectMemInstr &IM, Iter Slot,
245     bool searchBackward(MachineBasicBlock &MBB, Iter Slot) const;
249     bool searchForward(MachineBasicBlock &MBB, Iter Slot) const;
254     bool searchSuccBBs(MachineBasicBlock &MBB, Iter Slot) const;
647                          RegDefsUses &RegDU, InspectMemInstr& IM, Iter Slot,  in searchRange()  argument
694     unsigned Opcode = (*Slot).getOpcode();  in searchRange()
707 bool Filler::searchBackward(MachineBasicBlock &MBB, Iter Slot) const {  in searchBackward()
716   RegDU.init(*Slot);  in searchBackward()
718   if (!searchRange(MBB, ReverseIter(Slot), MBB.rend(), RegDU, MemDU, Slot,  in searchBackward()
722   MBB.splice(std::next(Slot), &MBB, std::next(Filler).base());  in searchBackward()
723   MIBundleBuilder(MBB, Slot, std::next(Slot, 2));  in searchBackward()
728 bool Filler::searchForward(MachineBasicBlock &MBB, Iter Slot) const {  in searchForward()
730   if (DisableForwardSearch || !Slot->isCall())  in searchForward()
737   RegDU.setCallerSaved(*Slot);  in searchForward()
739   if (!searchRange(MBB, std::next(Slot), MBB.end(), RegDU, NM, Slot, Filler))  in searchForward()
742   MBB.splice(std::next(Slot), &MBB, Filler);  in searchForward()
743   MIBundleBuilder(MBB, Slot, std::next(Slot, 2));  in searchForward()
748 bool Filler::searchSuccBBs(MachineBasicBlock &MBB, Iter Slot) const {  in searchSuccBBs()
783   if (!searchRange(MBB, SuccBB->begin(), SuccBB->end(), RegDU, *IM, Slot,  in searchSuccBBs()