858       MachineBasicBlock *IBB = I;  in TailMergeBlocks()  local
868         if (PBB == IBB)  in TailMergeBlocks()
879           if (!Cond.empty() && TBB == IBB) {  in TailMergeBlocks()
889           if (IBB->isLandingPad()) {  in TailMergeBlocks()
895               if (IBB != PredNextBB)      // fallthrough  in TailMergeBlocks()
898               if (TBB != IBB && FBB != IBB)   // cbr then ubr  in TailMergeBlocks()
901               if (TBB != IBB)               // ubr  in TailMergeBlocks()
904               if (TBB != IBB && IBB != PredNextBB)  // cbr  in TailMergeBlocks()
914               TII->InsertBranch(*PBB, (TBB == IBB) ? FBB : TBB, 0, NewCond, dl);  in TailMergeBlocks()
925         MadeChange |= TryTailMergeBlocks(IBB, PredBB);  in TailMergeBlocks()
931         FixTail(MergePotentials.begin()->getBlock(), IBB, TII);  in TailMergeBlocks()