1073     for (MachineBasicBlock *PBB : I->predecessors()) {  in TailMergeBlocks()
1077       if (TriedMerging.count(PBB))  in TailMergeBlocks()
1081       if (PBB == IBB)  in TailMergeBlocks()
1085       if (!UniquePreds.insert(PBB).second)  in TailMergeBlocks()
1090       if (PBB->hasEHPadSuccessor() || PBB->mayHaveInlineAsmBr())  in TailMergeBlocks()
1097         if (ML != MLI->getLoopFor(PBB))  in TailMergeBlocks()
1102       if (!TII->analyzeBranch(*PBB, TBB, FBB, Cond, true)) {  in TailMergeBlocks()
1111             auto Next = ++PBB->getIterator();  in TailMergeBlocks()
1119           DebugLoc dl = PBB->findBranchDebugLoc();  in TailMergeBlocks()
1120           TII->removeBranch(*PBB);  in TailMergeBlocks()
1123             TII->insertBranch(*PBB, (TBB == IBB) ? FBB : TBB, nullptr,  in TailMergeBlocks()
1127         MergePotentials.push_back(MergePotentialsElt(HashEndOfMBB(*PBB), PBB));  in TailMergeBlocks()