Function collect_raw_ptr_deref_info 

pub fn collect_raw_ptr_deref_info<'tcx>(
    tcx: TyCtxt<'tcx>,
    def_id: DefId,
) -> Vec<RawPtrDerefInfo<'tcx>>

Collect all raw pointer dereference operations in def_id as metadata records (block, pointer operand, pointee type, read-vs-write).