147         MachineBasicBlock* LayoutSucc = nullptr;  in runOnMachineFunction()  local
151           LayoutSucc = FirstSucc;  in runOnMachineFunction()
154           LayoutSucc = SecondSucc;  in runOnMachineFunction()
168         if (!LayoutSucc || (CondBranchTarget != JumpAroundTarget)) {  in runOnMachineFunction()
172         if ((NumSuccs == 2) && LayoutSucc && (LayoutSucc->pred_size() == 1)) {  in runOnMachineFunction()
175           if ((LayoutSucc->size() == 1) &&  in runOnMachineFunction()
176               IsUnconditionalJump(LayoutSucc->front().getOpcode())) {  in runOnMachineFunction()
178               LayoutSucc->front().getOperand(0).getMBB();  in runOnMachineFunction()
180             bool case1 = LayoutSucc->isLayoutSuccessor(JumpAroundTarget);  in runOnMachineFunction()
192               LayoutSucc->erase(LayoutSucc->begin());  in runOnMachineFunction()
193               LayoutSucc->replaceSuccessor(UncondTarget, JumpAroundTarget);  in runOnMachineFunction()
198                 JumpAroundTarget->moveAfter(LayoutSucc);  in runOnMachineFunction()
212                   LayoutSucc->livein_begin(), LayoutSucc->livein_end());  in runOnMachineFunction()
217                 LayoutSucc->removeLiveIn(OrigLI.PhysReg);  in runOnMachineFunction()
219                 LayoutSucc->addLiveIn(NewLI);  in runOnMachineFunction()