[Bug middle-end/86979] [9 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2348 with -m32 on darwin

[abel at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86979

--- Comment #12 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> Any progress on this?

I know what happens but am not fully sure as of why. The sp register should not
be available for the problematic move, so I'm figuring out why we got this
wrong.