解决方案
There has been a change in the way the debug signals are displayed in Vivado Hardware Manager.
In the Hardware Manager ILA window, Instead of the individual signals described in the UG586 it will show an entire bus in the ILA probes.
To work around this, refer back to RTL signal assignment to expand the individual probes in the ILA waveform window.
This issue is to be resolved by Vivado 2014.4