480   auto *Preheader = L->getLoopPreheader();  in deleteDeadLoop()  local
481   assert(Preheader && "Preheader should exist!");  in deleteDeadLoop()
499   auto *OldBr = dyn_cast<BranchInst>(Preheader->getTerminator());  in deleteDeadLoop()
546       P.setIncomingBlock(PredIndex, Preheader);  in deleteDeadLoop()
558               P.getIncomingBlock(PredIndex) == Preheader) &&  in deleteDeadLoop()
563       DTU.applyUpdates({{DominatorTree::Insert, Preheader, ExitBlock}});  in deleteDeadLoop()
565         MSSAU->applyUpdates({{DominatorTree::Insert, Preheader, ExitBlock}},  in deleteDeadLoop()
573     Builder.SetInsertPoint(Preheader->getTerminator());  in deleteDeadLoop()
576     Preheader->getTerminator()->eraseFromParent();  in deleteDeadLoop()
583     Preheader->getTerminator()->eraseFromParent();  in deleteDeadLoop()
587     DTU.applyUpdates({{DominatorTree::Delete, Preheader, L->getHeader()}});  in deleteDeadLoop()
589       MSSAU->applyUpdates({{DominatorTree::Delete, Preheader, L->getHeader()}},  in deleteDeadLoop()
1181   BasicBlock *Preheader = L->getLoopPreheader();  in canLoopBeDeleted()  local
1183   if (!Preheader)  in canLoopBeDeleted()