   0  getfield_gc_r %r0, FieldDescr<pypy.objspace.std.mapdict.Object.inst_map> -> %r1
   5  -live- %r0, %r1
   5  ref_guard_value %r1
   7  inline_call_ir_r <JitCode 'AbstractAttribute.read'>, I[$1], R[%r1, %r0, $<* struct rpy_string>] -> %r0
  17  -live- %r0
  17  -live- %r0
  17  goto_if_not_ptr_iszero %r0, L1
  21  ref_return $<* struct pypy.module._weakref.interp__weakref.WeakrefLifeline>
  23  ---
  23  L1:
  23  ref_return %r0
