27                                              MachineBasicBlock *Loop,  in PeelSingleBlockLoop()  argument
30   MachineFunction &MF = *Loop->getParent();  in PeelSingleBlockLoop()
31   MachineBasicBlock *Preheader = *Loop->pred_begin();  in PeelSingleBlockLoop()
32   if (Preheader == Loop)  in PeelSingleBlockLoop()
33     Preheader = *std::next(Loop->pred_begin());  in PeelSingleBlockLoop()
34   MachineBasicBlock *Exit = *Loop->succ_begin();  in PeelSingleBlockLoop()
35   if (Exit == Loop)  in PeelSingleBlockLoop()
36     Exit = *std::next(Loop->succ_begin());  in PeelSingleBlockLoop()
38   MachineBasicBlock *NewBB = MF.CreateMachineBasicBlock(Loop->getBasicBlock());  in PeelSingleBlockLoop()
40     MF.insert(Loop->getIterator(), NewBB);  in PeelSingleBlockLoop()
42     MF.insert(std::next(Loop->getIterator()), NewBB);  in PeelSingleBlockLoop()
46   for (MachineInstr &MI : *Loop) {  in PeelSingleBlockLoop()
63           if (Use.getParent()->getParent() != Loop)  in PeelSingleBlockLoop()
87     MachineInstr &OrigPhi = findEquivalentInstruction(MI, Loop);  in PeelSingleBlockLoop()
110     Preheader->ReplaceUsesOfBlockWith(Loop, NewBB);  in PeelSingleBlockLoop()
111     NewBB->addSuccessor(Loop);  in PeelSingleBlockLoop()
112     Loop->replacePhiUsesWith(Preheader, NewBB);  in PeelSingleBlockLoop()
113     Preheader->updateTerminator(Loop);  in PeelSingleBlockLoop()
115     TII->insertBranch(*NewBB, Loop, nullptr, {}, DL);  in PeelSingleBlockLoop()
117     Loop->replaceSuccessor(Exit, NewBB);  in PeelSingleBlockLoop()
118     Exit->replacePhiUsesWith(Loop, NewBB);  in PeelSingleBlockLoop()
123     bool CanAnalyzeBr = !TII->analyzeBranch(*Loop, TBB, FBB, Cond);  in PeelSingleBlockLoop()
126     TII->removeBranch(*Loop);  in PeelSingleBlockLoop()
127     TII->insertBranch(*Loop, TBB == Exit ? NewBB : TBB,  in PeelSingleBlockLoop()