[Bug sanitizer/97696] ICE since ASAN_MARK does not handle poly_int sized varibales

[matmal01 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97696

--- Comment #1 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
I guess this may also happen for the emission of ASAN_MARK in
`gimple_target_expr`, but haven't yet been able to trigger that.