   0  -live- %r1, %r2
   3  goto_if_not_ptr_nonzero %r1, L1
   7  ref_copy %r1 -> %r0
  10  -live- %r0, %r1, %r2
  13  guard_class %r1 -> %i0
  16  -live- %i0, %r0, %r2
  19  goto_if_not_int_eq %i0, $<* struct object_vtable>, L2
  24  residual_call_r_v $<* fn W_AppLevelHooks.descr_set_on_gc_minor>, R[%r0, %r2], <CallDescr(rr) EF=5>
  31  -live-
  34  void_return
  35  ---
  35  L2:
  35  L3:
  35  raise $<* struct object>
  37  ---
  37  L1:
  37  goto L3
