   0  getfield_gc_i %r0, FieldDescr<rpython.rlib.rmmap.MMap.inst_pos> -> %i0
   5  getfield_gc_i %r0, FieldDescr<rpython.rlib.rmmap.MMap.inst_size> -> %i1
  10  -live- %i0, %i1, %r0
  10  goto_if_not_int_lt %i0, %i1, L1
  15  getfield_gc_i %r0, FieldDescr<rpython.rlib.rmmap.MMap.inst_data> -> %i1
  20  getarrayitem_raw_i %i1, %i0, <rpython.jit.backend.llsupport.descr.ArrayDescr object at 0x0000000190fa41a8> -> %i1
  26  int_add %i0, $1 -> %i0
  30  setfield_gc_i %r0, %i0, FieldDescr<rpython.rlib.rmmap.MMap.inst_pos>
  35  int_return %i1
  37  ---
  37  L1:
  37  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x00000001b98aeb10> -> %r0
  41  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<rpython.rlib.rmmap.RMMapError.inst_message>
  46  assert_not_none %r0
  48  -live- %r0
  48  guard_class %r0 -> %i0
  51  -live- %r0
  51  raise %r0
