CodeGen/AsmPrinter/DwarfDebug.cpp

1694             MachineFunction::const_iterator PrevMBB = Prev->getParent();
1695             if (PrevMBB != I && (!AtBlockEntry || llvm::next(PrevMBB) != I) &&
1700                   PrevMBB->getLastNonDebugInstr();
1701               if (LastMI == PrevMBB->end()) {
1706               } else if (llvm::next(PrevMBB) != PrevMBB->getParent()->end())
1772       const MachineBasicBlock *PrevMBB = Prev->getParent();
1774           PrevMBB->getLastNonDebugInstr();
1775       if (LastMI == PrevMBB->end())
1778       else if (PrevMBB != &PrevMBB->getParent()->back()) {