[Bug middle-end/55658] bitfields and __attribute__((packed)) generate horrible code on x86_64

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55658

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
         /* ??? For historical reasons, reject modes that would normally
            receive greater alignment, even if unaligned accesses are
            acceptable.  This has both advantages and disadvantages.
            Removing this check means that something like:
....