[Bug rtl-optimization/48696] Horrible bitfield code generation on x86

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48696

--- Comment #17 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think some of this is due to SLOW_BYTE_ACCESS being set to 0.