   0  getfield_gc_i %r0, FieldDescr<rpython.rlib.streamio.DiskFile.inst_fd> -> %i0
   5  inline_call_irf_f <JitCode 'lseek'>, I[%i0, $1], R[], F[$0L] -> %f0
  15  -live- %f0
  18  float_return %f0
