return if the (aligned) field starting at byte offset is a moveable pointer "moveable pointer" means that the memory block referenced by the pointer can be moved by the GC (the pointer field will be updated with the new address)
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return if the (aligned) field starting at byte offset is a moveable pointer "moveable pointer" means that the memory block referenced by the pointer can be moved by the GC (the pointer field will be updated with the new address)