   0  inline_call_ir_r <JitCode 'interp_w__W_CallbackPtr'>, I[$False], R[%r0] -> %r0
   8  -live- %r0
   8  getfield_gc_i %r0, FieldDescr<pypy.module._rawffi.callback.W_CallbackPtr.inst_number> -> %i0
  13  residual_call_ir_v $<* fn ll_set_null__WeakValueDictR_Ptr_GcStruct_we_weakvaldictPtr_Signed>, I[%i0], R[$<* struct weakvaldict>], <CallDescr(ri) EF=5>
  21  -live-
  21  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
