   0  residual_call_ir_i $<* fn _check_utf8>, I[$True, %i1, %i2], R[%r0], <CallDescr(riii) EF=4> -> %i0
  11  -live- %i0
  11  -live- %i0
  11  goto_if_not_int_ge %i0, $0, L1
  16  int_return %i0
  18  ---
  18  L1:
  18  int_invert %i0 -> %i0
  21  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x000000018dd60f38> -> %r0
  25  setfield_gc_i %r0, %i0, FieldDescr<rpython.rlib.rutf8.CheckError.inst_pos>
  30  assert_not_none %r0
  32  -live- %r0
  32  guard_class %r0 -> %i0
  35  -live- %r0
  35  raise %r0
