   0  getfield_gc_r %r0, FieldDescr<pypy.objspace.std.bytearrayobject.W_BytearrayObject.inst__data> -> %r1
   5  getfield_gc_i %r1, FieldDescr<list.length> -> %i0
  10  getfield_gc_i %r0, FieldDescr<pypy.objspace.std.bytearrayobject.W_BytearrayObject.inst__offset> -> %i1
  15  int_sub %i0, %i1 -> %i0
  19  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000002aa74983ec0> -> %r0
  23  setfield_gc_i %r0, %i0, FieldDescr<pypy.objspace.std.intobject.W_IntObject.inst_intval>
  28  ref_return %r0
