What is loop distribution in code optimisation?

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What is loop distribution in code optimisation?

Loop distribution in code optimization refers to the process of breaking down a loop into smaller loops or separate loop nests in order to improve performance. This technique aims to reduce the number of loop iterations and minimize dependencies between loop iterations, allowing for better utilization of hardware resources such as cache memory and parallel execution. By distributing the loop, the compiler can optimize each smaller loop or loop nest individually, resulting in improved efficiency and potentially faster execution times.