[Bug middle-end/67714] [6 Regression] signed char is zero-extended instead of sign-extended

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67714

kugan at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kugan at gcc dot gnu.org

--- Comment #1 from kugan at gcc dot gnu.org ---

....
 _8 = fn1D.5055 ();
  e_9 = (charD.4) _8;
  f_13 = _8;
...

Looks like it is the same issue I saw in
https://gcc.gnu.org/ml/gcc-patches/2015-09/msg00403.html

Let me look into it.