Programmable logic device having logic elements with dedicated hardware to configure look up tables as registers

A computer-readable storage medium having a software embodied therein for execution by a computer, the computer-readable storage medium comprising:

• the software operable to configure a programmable logic device, the programmable logic device including a plurality of logic elements arranged in a logic array block (LAB), each of the logic elements including a first look up table and a second look up table configured to implement a logic register, and at least one physical register, wherein the software is configured to allocate a number of registers to implement a logic function between the physical registers and the logic registers configured from the first look up tables and the second look up tables of the logic elements on the programmable logic device, wherein the software is implemented within a machine that implements the programmable logic device, wherein the software is further operable to selectively configure dedicated hardware associated with one of the logic elements to configure the first look up table and the second look up table of the one of the logic elements to implement one of the logic registers, wherein the dedicated hardware includes a dedicated interconnect providing a clock signal as an input to the first look up table and the second look up table respectively, wherein the dedicated interconnect is connected to a LAB wide interconnect of the LAB.