   0  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x10097e10690> -> %r0
   4  setfield_gc_i %r0, $1, FieldDescr<pypy.module._socket.interp_socket.W_Socket.inst_usecount>
   9  ref_return %r0
