Abstract: Integrated circuit chips (IC's) require proper placement of many cells (groups of circuit components) and complex routing of wires to connect the cells. Designing of the IC's require meeting real-world constraints one of which is the performance of the IC, or the period of time required by the integrated circuit to produce the output signals from the time the input signals are available. Typically, the performance of an integrated circuit is determined by the slowest path of the signals, called the critical path. The critical path is usually only a small portion of the IC. The present invention discloses a method and apparatus for transforming the circuits comprising the critical path, thereby increasing the performance of the entire IC. The transformation is performed by segmenting, or blocking, the cells which make up the critical path. Then, each block is transformed, or replaced, with a resynthesized circuit to which both the digital 0 and digital 1 values are provided.