870   MachineBasicBlock *PrevBB = &*std::prev(TailBB->getIterator());  in TailDuplicate()  local
875   if (PrevBB->succ_size() == 1 &&  in TailDuplicate()
876       !TII->AnalyzeBranch(*PrevBB, PriorTBB, PriorFBB, PriorCond, true) &&  in TailDuplicate()
879     DEBUG(dbgs() << "\nMerging into block: " << *PrevBB  in TailDuplicate()
890         ProcessPHI(MI, TailBB, PrevBB, LocalVRMap, CopyInfos, UsedByPhi, true);  in TailDuplicate()
901         DuplicateInstruction(MI, TailBB, PrevBB, MF, LocalVRMap, UsedByPhi);  in TailDuplicate()
904       MachineBasicBlock::iterator Loc = PrevBB->getFirstTerminator();  in TailDuplicate()
906         Copies.push_back(BuildMI(*PrevBB, Loc, DebugLoc(),  in TailDuplicate()
913       PrevBB->splice(PrevBB->end(), TailBB, TailBB->begin(), TailBB->end());  in TailDuplicate()
915     PrevBB->removeSuccessor(PrevBB->succ_begin());  in TailDuplicate()
916     assert(PrevBB->succ_empty());  in TailDuplicate()
917     PrevBB->transferSuccessors(TailBB);  in TailDuplicate()
918     TDBBs.push_back(PrevBB);  in TailDuplicate()