1716   llvm::BasicBlock *NullBB;  member
1717   NullReturnState() : NullBB(nullptr) {}  in NullReturnState()
1722     NullBB = CGF.createBasicBlock("msgSend.null-receiver");  in init()
1730     CGF.Builder.CreateCondBr(isNull, NullBB, callBB);  in init()
1745     if (!NullBB) return result;  in complete()
1759     CGF.EmitBlock(NullBB);  in complete()
1767     assert(CGF.Builder.GetInsertBlock() == NullBB);  in complete()
1789       phi->addIncoming(null, NullBB);  in complete()
1816     real->addIncoming(scalarZero, NullBB);  in complete()
1819     imag->addIncoming(scalarZero, NullBB);  in complete()
7353         if (!nullReturn.NullBB)  in EmitVTableMessageSend()