Function rustc_mir::transform::add_retag::is_stable

pub(in transform::add_retag) fn is_stable(
    place: PlaceRef<'_>
) -> bool

Determines whether this place is "stable": Whether, if we evaluate it again after the assignment, we can be sure to obtain the same place value. (Concurrent accesses by other threads are no problem as these are anyway non-atomic copies. Data races are UB.)