[Bug c/88000] Warn when different local vars regs order may produce different and so unsupported code [-Wasm-register-var]

[dominik.b.czarnota+bugzilla at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88000

--- Comment #6 from Dominik Czarnota <dominik.b.czarnota+bugzilla at gmail dot com> ---
(In reply to Eric Gallager from comment #5)
> Reopening to confirm the part about this warning request at least

Yay, thanks. I am happy someone cares about this. It is good to make it less
likely that the users shoot themselves in the foot.