[Bug c++/96354] [10/11 Regression] ICE in maybe_canonicalize_mem_ref_addr, at gimple-fold.c:4903 since r10-2271-gd81ab49d0586fca0

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96354

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #8)
> We could allow this in debug stmts but pretty much any (or very many)
> workers on MEM_REFs will be quite unhappy about this. Of course we're not
> likely to run them on debug stmts. But then, we do have debug Temps for
> this...

I was wondering if we are ok with even MEM_REF with DEBUG_EXPR_DECL as the
address, but seems at least this routine is ok with that one.
The question is what we would do with that at cfgexpand.c time.
But I guess I can look at where this is folded into it and see if I can break
it out into a debug expr decl and then see what expansion does for it.