In PR design, it requires all cells within the PR instance to belong to the PR pblock.
I create appropriate pblocks prior to opt_design. However, during opt_design, new cells get created within the PR module, and do not inherit the pblock property.
This results in the following error in pre-place_design DRCs:
How can I resolve this issue?
The issue has been fixed in Vivado 2016.1.
The work-around for this issue is to delete the pblocks after opt_design, and reapply them.