   0  getfield_gc_r $<* struct rpython.rlib.streamio.BufferingInputStream>, FieldDescr<rpython.rlib.streamio.BufferingInputStream.inst_base> -> %r0
   5  -live- %r0
   8  guard_class %r0 -> %i0
  11  getfield_raw_i %i0, FieldDescr<rpython.rlib.streamio.Stream_vtable.cls_flushable> -> %i0
  16  -live- %i0, %r0
  19  int_guard_value %i0
  21  residual_call_r_i %i0, <IndirectCallTargets>, R[%r0], <CallDescr(r) EF=2> -> %i0
  28  -live- %i0
  31  int_return %i0
