857   MachineBasicBlock *PrevBB = std::prev(MachineFunction::iterator(TailBB));  in TailDuplicate()  local
862   if (PrevBB->succ_size() == 1 &&  in TailDuplicate()
863       !TII->AnalyzeBranch(*PrevBB, PriorTBB, PriorFBB, PriorCond, true) &&  in TailDuplicate()
866     DEBUG(dbgs() << "\nMerging into block: " << *PrevBB  in TailDuplicate()
877         ProcessPHI(MI, TailBB, PrevBB, LocalVRMap, CopyInfos, UsedByPhi, true);  in TailDuplicate()
888         DuplicateInstruction(MI, TailBB, PrevBB, MF, LocalVRMap, UsedByPhi);  in TailDuplicate()
891       MachineBasicBlock::iterator Loc = PrevBB->getFirstTerminator();  in TailDuplicate()
893         Copies.push_back(BuildMI(*PrevBB, Loc, DebugLoc(),  in TailDuplicate()
900       PrevBB->splice(PrevBB->end(), TailBB, TailBB->begin(), TailBB->end());  in TailDuplicate()
902     PrevBB->removeSuccessor(PrevBB->succ_begin());  in TailDuplicate()
903     assert(PrevBB->succ_empty());  in TailDuplicate()
904     PrevBB->transferSuccessors(TailBB);  in TailDuplicate()
905     TDBBs.push_back(PrevBB);  in TailDuplicate()