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

[rguenth at gcc dot gnu.org via Gcc-bugs]

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

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index a47482375c1..aa98599c1f5 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -14905,7 +14905,7 @@ vect_get_vector_types_for_stmt (vec_info *vinfo,
stmt_vec_info stmt_info,
         vector size per vectorization).  */
       scalar_type = vect_get_smallest_scalar_type (stmt_info,
                                                   TREE_TYPE (vectype));
-      if (scalar_type != TREE_TYPE (vectype))
+      if (!types_compatible_p (scalar_type, TREE_TYPE (vectype)))
        {
          if (dump_enabled_p ())
            dump_printf_loc (MSG_NOTE, vect_location,


but I don't see how it should make a difference in the end - the dump
difference quoted might not be the actual issue.