Description
Due to a bug, current versions of the Quartus® II software will not issue a warning message concerning jitter when a PLL is not driven by its dedicated clock input pin.
Resolution
The warning that you should receive in the Quartus II software is:
Warning (15055): PLL "<PLL Name>" input clock inclk[0] is not fully compensated and may have reduced jitter performance because it is fed by a non-dedicated input
This issue is scheduled to be fixed in a future release of Quartus II software.