977     MachineBasicBlock *IBB = &*I;  in TailMergeBlocks()  local
988       if (PBB == IBB)  in TailMergeBlocks()
1005         if (!Cond.empty() && TBB == IBB) {  in TailMergeBlocks()
1019         if (IBB->isEHPad()) {  in TailMergeBlocks()
1025             if (IBB != PredNextBB)      // fallthrough  in TailMergeBlocks()
1028             if (TBB != IBB && FBB != IBB)   // cbr then ubr  in TailMergeBlocks()
1031             if (TBB != IBB)               // ubr  in TailMergeBlocks()
1034             if (TBB != IBB && IBB != PredNextBB)  // cbr  in TailMergeBlocks()
1045             TII->InsertBranch(*PBB, (TBB == IBB) ? FBB : TBB, nullptr,  in TailMergeBlocks()
1060       MadeChange |= TryTailMergeBlocks(IBB, PredBB);  in TailMergeBlocks()
1067       FixTail(MergePotentials.begin()->getBlock(), IBB, TII);  in TailMergeBlocks()