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

[hjl.tools at gmail dot com via Gcc-bugs]

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

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
I couldn't find a way to access the _Noreturn info in backend.