Patent 7620917 was granted and assigned to Synopsys on November, 2009 by the United States Patent and Trademark Office.
Methods and apparatuses to automatically synthesize circuits. In one aspect of an embodiment, a logic function feeding a carry chain is implemented through extending the carry chain and through using the extended portion of the carry chain. In one aspect of an embodiment, control/non-control loads are separated from each other through replicating the driver elements of the mixed control/non-control loads. In one aspect of an embodiment, a read only memory (ROM) is implemented using a random access memory (RAM). In one embodiment, a register at the input side of the ROM is generated through inserting a register that is clocked at an inverted clock signal or through retiming a register from the output side of the ROM.