   0  getfield_gc_r %r0, FieldDescr<pypy.objspace.std.dictproxyobject.W_DictProxyObject.inst_w_mapping> -> %r0
   5  inline_call_r_r <JitCode 'comparison_ne_impl'>, R[%r0, %r1] -> %r0
  12  -live- %r0
  15  goto_if_not_ptr_iszero %r0, L1
  19  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  21  ---
  21  L1:
  21  ref_return %r0
