https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83157
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Isn't that related to PR68860, where because of LTO breaking DECL_ABSTRACT_ORIGINs we don't emit the more advanced DWARF extensions (or DWARF5) stuff, like DW_OP_GNU_parameter_ref etc.?