https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95187
--- Comment #3 from Gabriel Ravier <gabravier at gmail dot com> --- Seems to be fixed since GCC 11
[Bug tree-optimization/95187] Failure to optimize bool check into consecutive literals
gabravier at gmail dot com via Gcc-bugs Thu, 02 Sep 2021 08:25:57 -0700
