NOT Gate Push-Back logic option

Allows the Compiler to push an inversion (a NOT gate) back through a register and implement it on that register's data input if it is necessary to implement the design. If this option is turned on, a register may power up to an active-high state and it may need to be explicitly cleared during initial operation of the device.

You must assign this option to either an individual register or a design entity containing registers, or it is ignored.