[Bug c/95699] __builtin_constant_p inconsistencies

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95699

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 48749
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48749&action=edit
gcc11-pr95699.patch

Untested patch to improve the minmax optimization.