753   BasicBlock *PredBB = DestBB->getSinglePredecessor();  in MergeBasicBlockIntoOnlyPred()  local
754   assert(PredBB && "Block doesn't have a single predecessor!");  in MergeBasicBlockIntoOnlyPred()
756   bool ReplaceEntryBB = PredBB->isEntryBlock();  in MergeBasicBlockIntoOnlyPred()
763     SmallPtrSet<BasicBlock *, 2> PredsOfPredBB(pred_begin(PredBB),  in MergeBasicBlockIntoOnlyPred()
764                                                pred_end(PredBB));  in MergeBasicBlockIntoOnlyPred()
768       if (PredOfPredBB != PredBB)  in MergeBasicBlockIntoOnlyPred()
771       Updates.push_back({DominatorTree::Delete, PredOfPredBB, PredBB});  in MergeBasicBlockIntoOnlyPred()
772     Updates.push_back({DominatorTree::Delete, PredBB, DestBB});  in MergeBasicBlockIntoOnlyPred()
787   PredBB->replaceAllUsesWith(DestBB);  in MergeBasicBlockIntoOnlyPred()
790   PredBB->getTerminator()->eraseFromParent();  in MergeBasicBlockIntoOnlyPred()
791   DestBB->getInstList().splice(DestBB->begin(), PredBB->getInstList());  in MergeBasicBlockIntoOnlyPred()
792   new UnreachableInst(PredBB->getContext(), PredBB);  in MergeBasicBlockIntoOnlyPred()
797     DestBB->moveAfter(PredBB);  in MergeBasicBlockIntoOnlyPred()
800     assert(PredBB->getInstList().size() == 1 &&  in MergeBasicBlockIntoOnlyPred()
801            isa<UnreachableInst>(PredBB->getTerminator()) &&  in MergeBasicBlockIntoOnlyPred()
805     DTU->deleteBB(PredBB);  in MergeBasicBlockIntoOnlyPred()
817     PredBB->eraseFromParent(); // Nuke BB if DTU is nullptr.  in MergeBasicBlockIntoOnlyPred()
1017       BasicBlock *PredBB = OldValPN->getIncomingBlock(i);  in redirectValuesFromPredecessorsToPhi()  local
1019       Value *Selected = selectIncomingValueForBlock(PredVal, PredBB,  in redirectValuesFromPredecessorsToPhi()
1024       PN->addIncoming(Selected, PredBB);  in redirectValuesFromPredecessorsToPhi()
1030       BasicBlock *PredBB = BBPreds[i];  in redirectValuesFromPredecessorsToPhi()  local
1031       Value *Selected = selectIncomingValueForBlock(OldVal, PredBB,  in redirectValuesFromPredecessorsToPhi()
1036       PN->addIncoming(Selected, PredBB);  in redirectValuesFromPredecessorsToPhi()
1085   for (BasicBlock *PredBB : predecessors(BB)) {  in TryToSimplifyUncondBranchFromEmptyBlock()
1086     if (auto *CBI = dyn_cast<CallBrInst>(PredBB->getTerminator())) {  in TryToSimplifyUncondBranchFromEmptyBlock()