llvm dev - Jul 2017 - I can't exec BrainF to JIT my code !!!

Hello:
           I use cmake build a  examples. 
           I  set  the LLVM_BUILD_EXAMPLES  ON  and  I  set  the 
LLVM_INCLUDE_EXAMPLES  ON  .
           Then I got a BrainF program.
           I  write a  test file.


$ cat test.bf 
++++
[
        > ++++
        [
                >++++
                <-
        ]
        <-
]
>>.
$
           I think  it  should  print a '@'  .
           But when I use it.
           ./BrainF -jit test.bf        It doesn't work.      


$ ./BrainF -jit test.bf
------- Running JIT -------
$ 

           There is no error , no out , I don't why . Can you tell me ? Was
I missing something ?
           When I wanna use llvm examples to exec some BrainFuck code and learn
the principle. I think I met a bug.






------------------
死，就死得很难看！
 小白与兔是不会死的，它只是在考验灵感会不会死
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