Nios II Classic Processor Reference Guide

ID 683620
Date 10/28/2016
Document Table of Contents Shift and Rotate Performance

The performance of shift operations depends on the hardware multiply option. When a hardware multiplier is present, the ALU achieves shift and rotate operations in three or four clock cycles. Otherwise, the ALU includes dedicated shift circuitry that achieves one-bit-per-cycle shift and rotate performance.

Refer to the "Instruction Execution Performance for Nios II/s Core" table in the "Instruction Performance" section for details.