A mixed signal rotator/shifter for 8GHz Intel/spl reg/ Pentium/spl reg/ 4 integer core

A novel mixed signal 32-bit rotator/shifter circuit design enabling ultra-short latency Intel/spl reg/ Netburst/spl trade/ rotate and shift instructions is described. Compared to previous generation Intel/spl reg/ Pentium/spl reg/ 4 processor designs, this implementation cuts Rotate/Shift latency and throughput by 75% while adding significant frequency headroom. The circuit manufactured on Intel's 90nm process confirms a significant boost in integer performance.