1372   MachineBasicBlock &PrevBB = *std::prev(MachineFunction::iterator(MBB));  in OptimizeBlock()  local
1377       TII->analyzeBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, true);  in OptimizeBlock()
1383       DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1384       TII->removeBranch(PrevBB);  in OptimizeBlock()
1387         TII->insertBranch(PrevBB, PriorTBB, nullptr, PriorCond, dl);  in OptimizeBlock()
1401         PrevBB.succ_size() == 1 &&  in OptimizeBlock()
1403       LLVM_DEBUG(dbgs() << "\nMerging into block: " << PrevBB  in OptimizeBlock()
1406       if (PrevBB.begin() != PrevBB.end()) {  in OptimizeBlock()
1407         MachineBasicBlock::iterator PrevBBIter = PrevBB.end();  in OptimizeBlock()
1412         while (PrevBBIter != PrevBB.begin() && MBBIter != MBB->end()  in OptimizeBlock()
1421       PrevBB.splice(PrevBB.end(), MBB, MBB->begin(), MBB->end());  in OptimizeBlock()
1422       PrevBB.removeSuccessor(PrevBB.succ_begin());  in OptimizeBlock()
1423       assert(PrevBB.succ_empty());  in OptimizeBlock()
1424       PrevBB.transferSuccessors(MBB);  in OptimizeBlock()
1432       TII->removeBranch(PrevBB);  in OptimizeBlock()
1441       DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1442       TII->removeBranch(PrevBB);  in OptimizeBlock()
1443       TII->insertBranch(PrevBB, PriorTBB, nullptr, PriorCond, dl);  in OptimizeBlock()
1455         DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1456         TII->removeBranch(PrevBB);  in OptimizeBlock()
1457         TII->insertBranch(PrevBB, PriorFBB, nullptr, NewPriorCond, dl);  in OptimizeBlock()
1493           DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1494           TII->removeBranch(PrevBB);  in OptimizeBlock()
1495           TII->insertBranch(PrevBB, MBB, nullptr, NewPriorCond, dl);  in OptimizeBlock()
1588         bool PredHasNoFallThrough = !PrevBB.canFallThrough();  in OptimizeBlock()
1590             !PrevBB.isSuccessor(MBB)) {  in OptimizeBlock()
1593           if (!PredHasNoFallThrough && PrevBB.isSuccessor(MBB) &&  in OptimizeBlock()
1603             DebugLoc pdl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1604             TII->removeBranch(PrevBB);  in OptimizeBlock()
1605             TII->insertBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, pdl);  in OptimizeBlock()
1658   if (!PrevBB.canFallThrough()) {  in OptimizeBlock()
1738           !TII->analyzeBranch(PrevBB, PrevTBB, PrevFBB, PrevCond, true) &&  in OptimizeBlock()
1739           PrevBB.isSuccessor(&*FallThrough)) {  in OptimizeBlock()