[Bug ipa/101354] [11/12 regression] naked function mishandled - store optimized away

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101354

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OTOH decl-attributes.c has generic code doing

  /* A "naked" function attribute implies "noinline" and "noclone" for
     those targets that support it.  */
  if (TREE_CODE (*node) == FUNCTION_DECL
      && attributes
      && lookup_attribute ("naked", attributes) != NULL
      && lookup_attribute_spec (get_identifier ("naked")))
    {
      if (lookup_attribute ("noinline", attributes) == NULL)
        attributes = tree_cons (get_identifier ("noinline"), NULL, attributes);

      if (lookup_attribute ("noclone", attributes) == NULL)
        attributes = tree_cons (get_identifier ("noclone"),  NULL, attributes);
    }

maybe we should simply add "noipa" and eventually also "used" to it ... (if
that's enough)