   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  getfield_gc_i %r1, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_length> -> %i2
  19  -live- %i0, %i1, %i2, %r0, %r1
  19  goto_if_not_int_le %i1, %i2, L1
  24  int_add %i0, $1 -> %i1
  28  setfield_gc_i %r1, %i1, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_inputpos>
  33  getfield_gc_r %r1, FieldDescr<rpython.rlib.rstruct.runpack.MasterReader.inst_inputbuf> -> %r1
  38  inline_call_ir_r <JitCode 'StringBuffer.getslice'>, I[%i0, $1, $1], R[%r1] -> %r1
  48  -live- %r0, %r1
  48  strgetitem %r1, $0 -> %i0
  52  int_is_true %i0 -> %i0
  55  setfield_gc_i %r0, %i0, FieldDescr<rpython.rlib.rstruct.runpack.ReaderForPos0.inst_value>
  60  void_return
  61  ---
  61  L1:
  61  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000000019f64f088> -> %r0
  65  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<rpython.rlib.rstruct.error.StructError.inst_msg>
  70  assert_not_none %r0
  72  -live- %r0
  72  guard_class %r0 -> %i0
  75  -live- %r0
  75  raise %r0
