1396   MachineBasicBlock &PrevBB = *std::prev(MachineFunction::iterator(MBB));  in OptimizeBlock()  local
1401       TII->analyzeBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, true);  in OptimizeBlock()
1407       DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1408       TII->removeBranch(PrevBB);  in OptimizeBlock()
1411         TII->insertBranch(PrevBB, PriorTBB, nullptr, PriorCond, dl);  in OptimizeBlock()
1425         PrevBB.succ_size() == 1 && PrevBB.isSuccessor(MBB) &&  in OptimizeBlock()
1427       LLVM_DEBUG(dbgs() << "\nMerging into block: " << PrevBB  in OptimizeBlock()
1430       if (!PrevBB.empty()) {  in OptimizeBlock()
1431         MachineBasicBlock::iterator PrevBBIter = PrevBB.end();  in OptimizeBlock()
1436         while (PrevBBIter != PrevBB.begin() && MBBIter != MBB->end()  in OptimizeBlock()
1445       PrevBB.splice(PrevBB.end(), MBB, MBB->begin(), MBB->end());  in OptimizeBlock()
1446       PrevBB.removeSuccessor(PrevBB.succ_begin());  in OptimizeBlock()
1447       assert(PrevBB.succ_empty());  in OptimizeBlock()
1448       PrevBB.transferSuccessors(MBB);  in OptimizeBlock()
1456       TII->removeBranch(PrevBB);  in OptimizeBlock()
1465       DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1466       TII->removeBranch(PrevBB);  in OptimizeBlock()
1467       TII->insertBranch(PrevBB, PriorTBB, nullptr, PriorCond, dl);  in OptimizeBlock()
1479         DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1480         TII->removeBranch(PrevBB);  in OptimizeBlock()
1481         TII->insertBranch(PrevBB, PriorFBB, nullptr, NewPriorCond, dl);  in OptimizeBlock()
1517           DebugLoc dl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1518           TII->removeBranch(PrevBB);  in OptimizeBlock()
1519           TII->insertBranch(PrevBB, MBB, nullptr, NewPriorCond, dl);  in OptimizeBlock()
1613         bool PredHasNoFallThrough = !PrevBB.canFallThrough();  in OptimizeBlock()
1615             !PrevBB.isSuccessor(MBB)) {  in OptimizeBlock()
1618           if (!PredHasNoFallThrough && PrevBB.isSuccessor(MBB) &&  in OptimizeBlock()
1628             DebugLoc pdl = getBranchDebugLoc(PrevBB);  in OptimizeBlock()
1629             TII->removeBranch(PrevBB);  in OptimizeBlock()
1630             TII->insertBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, pdl);  in OptimizeBlock()
1692   if (!PrevBB.canFallThrough()) {  in OptimizeBlock()
1772           !TII->analyzeBranch(PrevBB, PrevTBB, PrevFBB, PrevCond, true) &&  in OptimizeBlock()
1773           PrevBB.isSuccessor(&*FallThrough)) {  in OptimizeBlock()