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

[tetra2005 at gmail dot com]

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

--- Comment #14 from Yuri Gribov <tetra2005 at gmail dot com> ---
Patch posted in https://gcc.gnu.org/ml/gcc-patches/2017-07/msg01016.html