   0  getfield_gc_f_pure %r0, FieldDescr<tuple2.item0> -> %f0
   5  getfield_gc_f_pure %r0, FieldDescr<tuple2.item1> -> %f1
  10  new <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab3e546368> -> %r0
  14  setfield_gc_f %r0, %f0, FieldDescr<tuple2.item0>
  19  setfield_gc_f %r0, %f1, FieldDescr<tuple2.item1>
  24  ref_return %r0
