   0  -live- %r0
   3  guard_class %r0 -> %i0
   6  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_getweakref> -> %i0
  11  -live- %i0, %r0
  14  int_guard_value %i0
  16  residual_call_r_r %i0, <IndirectCallTargets>, R[%r0], <CallDescr(r) EF=7> -> %r1
  23  -live- %r0, %r1
  26  goto_if_not_ptr_iszero %r1, L1
  30  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x0000aaab4d751fa0> -> %r1
  34  setfield_gc_i %r1, $False, FieldDescr<pypy.module._weakref.interp__weakref.WeakrefLifeline.inst_has_callbacks>
  39  -live- %r0, %r1
  42  guard_class %r0 -> %i0
  45  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_setweakref> -> %i0
  50  -live- %i0, %r0, %r1
  53  int_guard_value %i0
  55  residual_call_r_v %i0, <IndirectCallTargets>, R[%r0, %r1], <CallDescr(rr) EF=7>
  62  -live- %r1
  65  ref_return %r1
  67  ---
  67  L1:
  67  ref_return %r1
