811   MachineBasicBlock *PrevBB = &*std::prev(TailBB->getIterator());  in tailDuplicate()  local
816   if (PrevBB->succ_size() == 1 &&  in tailDuplicate()
817       !TII->analyzeBranch(*PrevBB, PriorTBB, PriorFBB, PriorCond, true) &&  in tailDuplicate()
820     DEBUG(dbgs() << "\nMerging into block: " << *PrevBB  in tailDuplicate()
831         processPHI(MI, TailBB, PrevBB, LocalVRMap, CopyInfos, UsedByPhi, true);  in tailDuplicate()
840         duplicateInstruction(MI, TailBB, PrevBB, MF, LocalVRMap, UsedByPhi);  in tailDuplicate()
843       appendCopies(PrevBB, CopyInfos, Copies);  in tailDuplicate()
846       PrevBB->splice(PrevBB->end(), TailBB, TailBB->begin(), TailBB->end());  in tailDuplicate()
848     PrevBB->removeSuccessor(PrevBB->succ_begin());  in tailDuplicate()
849     assert(PrevBB->succ_empty());  in tailDuplicate()
850     PrevBB->transferSuccessors(TailBB);  in tailDuplicate()
851     TDBBs.push_back(PrevBB);  in tailDuplicate()