   0  getfield_gc_r %r0, FieldDescr<pypy.module._file.interp_file.W_File.inst_stream> -> %r0
   5  -live- %f0, %i0, %r0
   5  goto_if_not_ptr_iszero %r0, L1
   9  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x4b7959f0> -> %r0
  13  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<pypy.interpreter.error.OpErrFmtNoArgs.inst__value>
  18  setfield_gc_r %r0, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst_w_type>
  23  assert_not_none %r0
  25  -live- %r0
  25  guard_class %r0 -> %i0
  28  -live- %r0
  28  raise %r0
  30  ---
  30  L1:
  30  -live- %f0, %i0, %r0
  30  guard_class %r0 -> %i1
  33  getfield_raw_i %i1, FieldDescr<rpython.rlib.streamio.Stream_vtable.cls_seek> -> %i1
  38  -live- %f0, %i0, %i1, %r0
  38  int_guard_value %i1
  40  residual_call_irf_v %i1, <IndirectCallTargets>, I[%i0], R[%r0], F[%f0], <CallDescr(rLi) EF=7>
  50  -live-
  50  void_return
