783   BasicBlock *PredBB = DestBB->getSinglePredecessor();  in MergeBasicBlockIntoOnlyPred()  local
784   assert(PredBB && "Block doesn't have a single predecessor!");  in MergeBasicBlockIntoOnlyPred()
786   bool ReplaceEntryBB = PredBB->isEntryBlock();  in MergeBasicBlockIntoOnlyPred()
795     Updates.reserve(Updates.size() + 2 * pred_size(PredBB) + 1);  in MergeBasicBlockIntoOnlyPred()
796     for (BasicBlock *PredOfPredBB : predecessors(PredBB))  in MergeBasicBlockIntoOnlyPred()
798       if (PredOfPredBB != PredBB)  in MergeBasicBlockIntoOnlyPred()
802     for (BasicBlock *PredOfPredBB : predecessors(PredBB))  in MergeBasicBlockIntoOnlyPred()
804         Updates.push_back({DominatorTree::Delete, PredOfPredBB, PredBB});  in MergeBasicBlockIntoOnlyPred()
805     Updates.push_back({DominatorTree::Delete, PredBB, DestBB});  in MergeBasicBlockIntoOnlyPred()
820   PredBB->replaceAllUsesWith(DestBB);  in MergeBasicBlockIntoOnlyPred()
823   PredBB->getTerminator()->eraseFromParent();  in MergeBasicBlockIntoOnlyPred()
824   DestBB->splice(DestBB->begin(), PredBB);  in MergeBasicBlockIntoOnlyPred()
825   new UnreachableInst(PredBB->getContext(), PredBB);  in MergeBasicBlockIntoOnlyPred()
830     DestBB->moveAfter(PredBB);  in MergeBasicBlockIntoOnlyPred()
833     assert(PredBB->size() == 1 &&  in MergeBasicBlockIntoOnlyPred()
834            isa<UnreachableInst>(PredBB->getTerminator()) &&  in MergeBasicBlockIntoOnlyPred()
838     DTU->deleteBB(PredBB);  in MergeBasicBlockIntoOnlyPred()
850     PredBB->eraseFromParent(); // Nuke BB if DTU is nullptr.  in MergeBasicBlockIntoOnlyPred()
1087       BasicBlock *PredBB = OldValPN->getIncomingBlock(i);  in redirectValuesFromPredecessorsToPhi()  local
1089       if (PredBB == CommonPred)  in redirectValuesFromPredecessorsToPhi()
1094           selectIncomingValueForBlock(PredVal, PredBB, IncomingValues);  in redirectValuesFromPredecessorsToPhi()
1098       PN->addIncoming(Selected, PredBB);  in redirectValuesFromPredecessorsToPhi()
1104     for (BasicBlock *PredBB : BBPreds) {  in redirectValuesFromPredecessorsToPhi()
1107       if (PredBB == CommonPred)  in redirectValuesFromPredecessorsToPhi()
1111           selectIncomingValueForBlock(OldVal, PredBB, IncomingValues);  in redirectValuesFromPredecessorsToPhi()
1115       PN->addIncoming(Selected, PredBB);  in redirectValuesFromPredecessorsToPhi()