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AR# 67290

2015.x Vivado IP Flows - DONT_TOUCH property on IP cores in non-project mode prevents physopt optimization INFO: [Physopt 32-573]


When using the non-project mode, there are DONT_TOUCH properties on the Xilinx IP modules in Vivado 2015.x.

This is an issue as it prevents optimization during implementation and causes the following INFO messages:

INFO: [Physopt 32-573] ... was not replicated.
The following hierarchical instances have DONT_TOUCH attributes which can prevent cell replication:
Resolution: Removing DONT_TOUCH attributes may enable additional optimization.


In project mode, these DONT_TOUCH properties are automatically removed.

This issue in non-project mode is resolved in Vivado 2016.1 and newer versions.

AR# 67290
Date 06/17/2016
Status Active
Type General Article
  • Vivado Design Suite