[Bug middle-end/116508] [15 Regression] `popcount(char) == 1` or char no longer expands to using `(arg ^ (arg - 1)) > arg - 1` trick after r15-2946-gfcc3af99498804

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116508

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
So what's the state here?