https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114060
--- Comment #2 from Rich Felker <bugdal at aerifal dot cx> --- How could there be such a contract? In order to call any other function, the GOT address of the callee needs to be loaded, replacing the caller's value, which must be spilled and reloaded if it's needed again -- but if it's not needed again, it makes sense to just discard it. On SH (and AFAIK FRV, the original FDPIC), GCC happily discards the FDPIC/GOT register when it won't be used again. Maybe as an implementation detail GCC is not doing that on ARM right now, but if not, that's probably a big missed optimization and not something libgcc unwinder code should be relying on.
