Can any one suggest me how to avoid the warning OPT-1206 in design compiler.
The OPT-1206 defination is: " The register Ro is constant and will be removed ".
This warns that some of the flipflop from my design are getting removed as a result
of optimization, but I donot want any of the filpflop to be removed from my design.
Is ther any command which can serve this purpose ?
i dont think so,, any tool will merge the hierarchies and do the optimizations across the hierarchies,, untill u ask to do so,,, so sequential merge across hieriarchy may not occur
The switch -boundary_optimization (compile -boundary_optimization) will result in optimization across hierarchies. Make sure u don't include it in case u want to prevent it.
after boundary optimization use set register merging as false for that particular register inorder not to remove or merge that particular register for particular reasons.