[Bug middle-end/59521] __builtin_expect not effective in switch

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59521

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 41713
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41713&action=edit
Semi-working patch