   0  getfield_gc_i %r0, FieldDescr<rpython.rlib.streamio.DiskFile.inst_fd> -> %i1
   5  inline_call_irf_f <JitCode 'lseek'>, I[%i1, %i0], R[], F[%f0] -> %f0
  15  -live-
  18  void_return
