https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69075
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ick - re-gimplification hits C++ FE hooks...
We should really do parts of
/* Reset some langhooks. Do not reset types_compatible_p, it may
still be used indirectly via the get_alias_set langhook. */
lang_hooks.dwarf_name = lhd_dwarf_name;
lang_hooks.decl_printable_name = gimple_decl_printable_name;
lang_hooks.gimplify_expr = lhd_gimplify_expr;
unconditionally (not on LTO) in free_lang_data.
Eventually the gimplify hook even earlier at the start of finalize_CU.
