[Bug tree-optimization/37574] [4.4 Regression] ICE with the vectorizer and GC

["jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #2 from jakub at gcc dot gnu dot org  2008-09-19 14:12 -------
vect_get_vec_def_for_operand has:
  tree vectype = STMT_VINFO_VECTYPE (stmt_vinfo);
  int nunits = TYPE_VECTOR_SUBPARTS (vectype);
...
    /* Case 1: operand is a constant.  */
    case vect_constant_def:
...
        for (i = nunits - 1; i >= 0; --i)
          {
            t = tree_cons (NULL_TREE, op, t);
          }
        vector_type = get_vectype_for_scalar_type (TREE_TYPE (op));
        gcc_assert (vector_type);
        vec_cst = build_vector (vector_type, t);
and similarly in a few other cases.  vectype in this case is V8HI, but op is
SImode, so nunits is 8, yet vector_type has just 4 units.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |irar at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-09-19 14:12:43
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37574