1224   MachineBasicBlock &PrevBB = *std::prev(MachineFunction::iterator(MBB));  in OptimizeBlock()  local
1229     TII->AnalyzeBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, true);  in OptimizeBlock()
1232     MadeChange |= PrevBB.CorrectExtraCFGEdges(PriorTBB, PriorFBB,  in OptimizeBlock()
1239       DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1240       TII->RemoveBranch(PrevBB);  in OptimizeBlock()
1243         TII->InsertBranch(PrevBB, PriorTBB, nullptr, PriorCond, dl);  in OptimizeBlock()
1257         PrevBB.succ_size() == 1 &&  in OptimizeBlock()
1259       DEBUG(dbgs() << "\nMerging into block: " << PrevBB  in OptimizeBlock()
1262       if (PrevBB.begin() != PrevBB.end()) {  in OptimizeBlock()
1263         MachineBasicBlock::iterator PrevBBIter = PrevBB.end();  in OptimizeBlock()
1268         while (PrevBBIter != PrevBB.begin() && MBBIter != MBB->end()  in OptimizeBlock()
1277       PrevBB.splice(PrevBB.end(), MBB, MBB->begin(), MBB->end());  in OptimizeBlock()
1278       PrevBB.removeSuccessor(PrevBB.succ_begin());  in OptimizeBlock()
1279       assert(PrevBB.succ_empty());  in OptimizeBlock()
1280       PrevBB.transferSuccessors(MBB);  in OptimizeBlock()
1288       TII->RemoveBranch(PrevBB);  in OptimizeBlock()
1297       DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1298       TII->RemoveBranch(PrevBB);  in OptimizeBlock()
1299       TII->InsertBranch(PrevBB, PriorTBB, nullptr, PriorCond, dl);  in OptimizeBlock()
1311         DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1312         TII->RemoveBranch(PrevBB);  in OptimizeBlock()
1313         TII->InsertBranch(PrevBB, PriorFBB, nullptr, NewPriorCond, dl);  in OptimizeBlock()
1349           DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1350           TII->RemoveBranch(PrevBB);  in OptimizeBlock()
1351           TII->InsertBranch(PrevBB, MBB, nullptr, NewPriorCond, dl);  in OptimizeBlock()
1421         bool PredHasNoFallThrough = !PrevBB.canFallThrough();  in OptimizeBlock()
1423             !PrevBB.isSuccessor(MBB)) {  in OptimizeBlock()
1426           if (!PredHasNoFallThrough && PrevBB.isSuccessor(MBB) &&  in OptimizeBlock()
1436             DebugLoc pdl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1437             TII->RemoveBranch(PrevBB);  in OptimizeBlock()
1438             TII->InsertBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, pdl);  in OptimizeBlock()
1492   if (!PrevBB.canFallThrough()) {  in OptimizeBlock()
1562           !TII->AnalyzeBranch(PrevBB, PrevTBB, PrevFBB, PrevCond, true) &&  in OptimizeBlock()
1563           PrevBB.isSuccessor(FallThrough)) {  in OptimizeBlock()