   0  getfield_gc_i %r0, FieldDescr<pypy.module.struct.formatiterator.UnpackFormatIterator.inst_pos> -> %i1
   5  int_add %i1, %i0 -> %i2
   9  getfield_gc_i %r0, FieldDescr<pypy.module.struct.formatiterator.UnpackFormatIterator.inst_length> -> %i3
  14  -live- %i0, %i1, %i2, %i3, %r0
  14  goto_if_not_int_le %i2, %i3, L1
  19  int_add %i1, %i0 -> %i2
  23  setfield_gc_i %r0, %i2, FieldDescr<pypy.module.struct.formatiterator.UnpackFormatIterator.inst_pos>
  28  getfield_gc_r %r0, FieldDescr<pypy.module.struct.formatiterator.UnpackFormatIterator.inst_buf> -> %r0
  33  -live- %i0, %i1, %r0
  33  guard_class %r0 -> %i2
  36  getfield_raw_i %i2, FieldDescr<rpython.rlib.buffer.Buffer_vtable.cls_getslice> -> %i2
  41  -live- %i0, %i1, %i2, %r0
  41  int_guard_value %i2
  43  residual_call_ir_r %i2, <IndirectCallTargets>, I[%i1, $1, %i0], R[%r0], <CallDescr(riii) EF=7> -> %r0
  54  -live- %r0
  54  ref_return %r0
  56  ---
  56  L1:
  56  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000000019f64f088> -> %r0
  60  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<rpython.rlib.rstruct.error.StructError.inst_msg>
  65  assert_not_none %r0
  67  -live- %r0
  67  guard_class %r0 -> %i0
  70  -live- %r0
  70  raise %r0
