[Bug target/114097] Missed register optimization in _Noreturn functions

[pskocik at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114097

--- Comment #4 from Petr Skocik <pskocik at gmail dot com> ---
Excellent! Thank you very much. Didn't realize the functionality was already
there, but didn't work without an explicit __attribute((noreturn)). Now I can
get rid of my most complex assembly function which I stupidly (back then I
thought cleverly) wrote. :)