[Bug tree-optimization/116081] [15 Regression] Different code generation in the vectorizer with a typedef vs not

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116081

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2024-07-25
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
  if (!VECTOR_BOOLEAN_TYPE_P (vectype))
    {
      /* The number of units is set according to the smallest scalar
         type (or the largest vector size, but we only support one
         vector size per vectorization).  */
      scalar_type = vect_get_smallest_scalar_type (stmt_info,
                                                   TREE_TYPE (vectype));
      if (scalar_type != TREE_TYPE (vectype))
        {

this is obviously a too strict check.