https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83084
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Ah, that might be it. I'd say UNSPEC_VOLATILE should never appear in DEBUG_INSNs. I'll have a look where it is introduced and why.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83084
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Ah, that might be it. I'd say UNSPEC_VOLATILE should never appear in DEBUG_INSNs. I'll have a look where it is introduced and why.