[Bug middle-end/120720] __builtin_rev_crc32_data8 (and family) should be able to constant fold

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120720

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
std::max has been constexpr since c++14.