https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79985
--- Comment #4 from Alexander Monakov <amonakov at gcc dot gnu.org> --- It might have been nicer to adjust asms themselves, adding inputs/outputs for each global reg, if we must pretend the asms implicitly read/write them. That would allow any subsystem (df, sched-deps, whatever) to derive the rest automatically, and would make it obvious in the IR/compiler dumps what's going on.
