[Bug middle-end/85516] [missed-optimization] gcc does not convert multiple compares against constants to a shift+bitmask test

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85516

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
UB only with -fstrict-enums which isn't the default.