At any time in the design flow you can also create a copy of the active constraint set using the Save Constraints As command. With multiple places to make changes to constraint files, or to model the affect of different constraints, it is useful to save changes to a new constraint set to manage changes or support "what-if" analysis.
Selectto open the Save Constraints As dialog box, and enter a new constraint set name in which to save all constraints.
The Save Constraints As dialog box does the following:
- Creates a new constraint set.
- Copies the active constraint files into the new constraint set in the local project directory.
- Writes any modifications to the constraints to the copied constraint files, leaving the original XDC files unchanged.
- Provides an option to make the new constraint set active in the project.