[Bug middle-end/106818] code is genereated differently with or without 'extern'

[pangbw at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106818

--- Comment #6 from baoshan <pangbw at gmail dot com> ---
> really of unknown alignment then sharing the lui might not work.
Can you elaborate why shareing the lui might not work?