28                                              MachineBasicBlock *Loop,  in PeelSingleBlockLoop()  argument
31   MachineFunction &MF = *Loop->getParent();  in PeelSingleBlockLoop()
32   MachineBasicBlock *Preheader = *Loop->pred_begin();  in PeelSingleBlockLoop()
33   if (Preheader == Loop)  in PeelSingleBlockLoop()
34     Preheader = *std::next(Loop->pred_begin());  in PeelSingleBlockLoop()
35   MachineBasicBlock *Exit = *Loop->succ_begin();  in PeelSingleBlockLoop()
36   if (Exit == Loop)  in PeelSingleBlockLoop()
37     Exit = *std::next(Loop->succ_begin());  in PeelSingleBlockLoop()
39   MachineBasicBlock *NewBB = MF.CreateMachineBasicBlock(Loop->getBasicBlock());  in PeelSingleBlockLoop()
41     MF.insert(Loop->getIterator(), NewBB);  in PeelSingleBlockLoop()
43     MF.insert(std::next(Loop->getIterator()), NewBB);  in PeelSingleBlockLoop()
47   for (MachineInstr &MI : *Loop) {  in PeelSingleBlockLoop()
64           if (Use.getParent()->getParent() != Loop)  in PeelSingleBlockLoop()
84     MachineInstr &OrigPhi = findEquivalentInstruction(MI, Loop);  in PeelSingleBlockLoop()
107     Preheader->replaceSuccessor(Loop, NewBB);  in PeelSingleBlockLoop()
108     NewBB->addSuccessor(Loop);  in PeelSingleBlockLoop()
109     Loop->replacePhiUsesWith(Preheader, NewBB);  in PeelSingleBlockLoop()
113     TII->insertBranch(*NewBB, Loop, nullptr, {}, DL);  in PeelSingleBlockLoop()
115     Loop->replaceSuccessor(Exit, NewBB);  in PeelSingleBlockLoop()
116     Exit->replacePhiUsesWith(Loop, NewBB);  in PeelSingleBlockLoop()
121     bool CanAnalyzeBr = !TII->analyzeBranch(*Loop, TBB, FBB, Cond);  in PeelSingleBlockLoop()
124     TII->removeBranch(*Loop);  in PeelSingleBlockLoop()
125     TII->insertBranch(*Loop, TBB == Exit ? NewBB : TBB,  in PeelSingleBlockLoop()