[Bug tree-optimization/56695] ICE in expand_vec_cond_expr, at optabs.c:6751

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56695



Marc Glisse <glisse at gcc dot gnu.org> changed:



           What    |Removed                     |Added

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                 CC|                            |glisse at gcc dot gnu.org



--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> 2013-03-23 17:04:47 
UTC ---

In tree-vect-stmts.c:



  if (!INTEGRAL_TYPE_P (TREE_TYPE (vectype)))

    {

      unsigned int prec = GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (vectype)));

      tree cmp_type = build_nonstandard_integer_type (prec, 1);

      vec_cmp_type = get_same_sized_vectype (cmp_type, vectype);

      if (vec_cmp_type == NULL_TREE)

        return false;

    }



It doesn't check if vectype is signed, and anyway it explicitly asks for an

unsigned type. Changing those 2 things seems to help. I am away next week,

can't try a patch now.