   0  getfield_gc_r %r0, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_mr> -> %r1
   5  getfield_gc_i %r1, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_inputpos> -> %i0
  10  int_add %i0, $1 -> %i1
  14  int_add %i0, $1 -> %i2
  18  getfield_gc_i %r1, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_length> -> %i3
  23  -live- %i0, %i1, %i2, %i3, %r0, %r1
  23  goto_if_not_int_le %i2, %i3, L1
  28  int_add %i0, $1 -> %i2
  32  setfield_gc_i %r1, %i2, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_inputpos>
  37  getfield_gc_r %r1, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_inputbuf> -> %r1
  42  inline_call_ir_r <JitCode 'StringBuffer.getslice'>, I[%i0, %i1, $1, $1], R[%r1] -> %r1
  53  -live- %r0, %r1
  53  strgetitem %r1, $0 -> %i0
  57  int_is_true %i0 -> %i0
  60  setfield_gc_i %r0, %i0, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_value>
  65  void_return
  66  ---
  66  L1:
  66  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x7fff49aa95a0> -> %r0
  70  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<rpython.rlib.rstruct.error.StructError.inst_msg>
  75  assert_not_none %r0
  77  -live- %r0
  77  guard_class %r0 -> %i0
  80  -live- %r0
  80  raise %r0
