   0  getfield_gc_r %r0, FieldDescr<pypy.module._io.interp_stringio.W_StringIO.inst_buf> -> %r0
   5  -live- %r0
   5  goto_if_not_ptr_iszero %r0, L1
   9  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x7fff4f52efa0> -> %r0
  13  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<pypy.objspace.std.bytesobject.W_BytesObject.inst__value>
  18  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x7fff5988b640> -> %r1
  22  setfield_gc_r %r1, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst_w_type>
  27  setfield_gc_r %r1, %r0, FieldDescr<pypy.interpreter.error.OperationError.inst__w_value>
  32  setfield_gc_r %r1, $<* struct pypy.interpreter.baseobjspace.W_Root>, FieldDescr<pypy.interpreter.error.OperationError.inst__application_traceback>
  37  assert_not_none %r1
  39  -live- %r1
  39  guard_class %r1 -> %i0
  42  -live- %r1
  42  raise %r1
  44  ---
  44  L1:
  44  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
