[Bug middle-end/102395] [nvptx, vax] enum reg_class inferred as signed / unsigned

[jbglaw--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102395

--- Comment #6 from Jan-Benedict Glaw <jbg...@lug-owl.de> ---
I'll fetch that patch and stuff it in the autobuilder, then let it run for
nvptx, vax and a few others.