1377   MachineBasicBlock *PriorTBB = nullptr, *PriorFBB = nullptr;  in OptimizeBlock()  local
1380       TII->analyzeBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, true);  in OptimizeBlock()
1385     if (PriorTBB && PriorTBB == PriorFBB) {  in OptimizeBlock()
1434     if (PriorTBB == MBB && !PriorFBB) {  in OptimizeBlock()
1443     if (PriorFBB == MBB) {  in OptimizeBlock()
1460         TII->insertBranch(PrevBB, PriorFBB, nullptr, NewPriorCond, dl);  in OptimizeBlock()
1475     if (MBB->succ_empty() && !PriorCond.empty() && !PriorFBB &&  in OptimizeBlock()
1597               PriorTBB != MBB && PriorFBB != MBB) {  in OptimizeBlock()
1599               assert(PriorCond.empty() && !PriorFBB &&  in OptimizeBlock()
1603               assert(!PriorFBB && "Machine CFG out of date!");  in OptimizeBlock()
1604               PriorFBB = MBB;  in OptimizeBlock()
1608             TII->insertBranch(PrevBB, PriorTBB, PriorFBB, PriorCond, pdl);  in OptimizeBlock()