[Bug target/92821] Miscompilation when passing 8-bit enum to extern function

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92821

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Related links:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46942
https://groups.google.com/forum/?hl=en#!topic/x86-64-abi/E8O33onbnGQ