909   MachineBasicBlock *PrevBB = ForcedLayoutPred;  in tailDuplicate()  local
910   if (!PrevBB)  in tailDuplicate()
911     PrevBB = &*std::prev(TailBB->getIterator());  in tailDuplicate()
916   if (PrevBB->succ_size() == 1 &&  in tailDuplicate()
918       *PrevBB->succ_begin() == TailBB &&  in tailDuplicate()
919       !TII->analyzeBranch(*PrevBB, PriorTBB, PriorFBB, PriorCond) &&  in tailDuplicate()
924     LLVM_DEBUG(dbgs() << "\nMerging into block: " << *PrevBB  in tailDuplicate()
929     TII->removeBranch(*PrevBB);  in tailDuplicate()
939         processPHI(MI, TailBB, PrevBB, LocalVRMap, CopyInfos, UsedByPhi, true);  in tailDuplicate()
948         duplicateInstruction(MI, TailBB, PrevBB, LocalVRMap, UsedByPhi);  in tailDuplicate()
951       appendCopies(PrevBB, CopyInfos, Copies);  in tailDuplicate()
953       TII->removeBranch(*PrevBB);  in tailDuplicate()
955       PrevBB->splice(PrevBB->end(), TailBB, TailBB->begin(), TailBB->end());  in tailDuplicate()
957     PrevBB->removeSuccessor(PrevBB->succ_begin());  in tailDuplicate()
958     assert(PrevBB->succ_empty());  in tailDuplicate()
959     PrevBB->transferSuccessors(TailBB);  in tailDuplicate()
963       PrevBB->updateTerminator(TailBB->getNextNode());  in tailDuplicate()
965     TDBBs.push_back(PrevBB);  in tailDuplicate()