ID:13094 Not allowed to move at least <number> registers because they are in a sequence of registers directly fed by input pins

CAUSE: You attempted to optimize netlists by directing the Quartus Prime software to perform gate-level register retiming. However, the Quartus Prime software cannot move the specified number of registers because they are directly fed by input pins, or they are in a sequence of registers in the same clock domain of which the first register is directly fed by a pin. The maximum length of this sequence is determined by the setting ADV_NETLIST_OPT_METASTABLE_REGS, which defaults to two. The number of registers reported in this message may be lower than the actual number of registers fed by input pins, because some registers may not be allowed to be moved for other reasons.

ACTION: If you want to allow the Quartus Prime software to move these registers, set the Netlist Optimizations logic option to Always Allow. Otherwise, no action is required.