CAUSE: The Quartus Prime software found the specified number of partition definitions having no effect on incremental compilation and was not used by Partition Merge due to the following reasons:
- You defined a new partition but did not re-synthesize its parent partition, either because you did not perform Analysis & Synthesis or the parent partition has its
Netlist Type
set to Ignore source file changes, causing synthesis to be skipped.
- The partition is defined for a hierarchy that does not exist in the design, possibly because of a spelling mistake in the PARTITION_HIERARCHY assignment.
- The partition is under a parent partition with the Netlist Type set to Empty. Because the entire design hierarchy is replaced by an empty netlist, the entity instance represented by the specified partition no longer exists and therefore is not merged.
- The partition is under a parent partition with the Netlist Type set to Imported or Post-Fit (Import-based). The partition is considered to be part of the parent partition and therefore does not need to be merged separately.
ACTION: If the message refers to a partition that you defined recently, make sure that the parent partition is re-synthesized by performing Analysis & Synthesis with the Netlist Type of the parent partition set to Post-Fit, Post-Synthesis, or Source File. If you added the partition assignment PARTITION_HIERARCHY manually, make sure that the hierarchy path is not misspelled. You should ignore this message only if you want the Quartus Prime software to ignore the specified partitions.