unrolledThe loop was unrolled

Reported by --explain after a verdict.

mettle explain unrolled

The body was replicated so fewer iterations do more work each, which removes counter arithmetic and branch overhead. A loop with a constant trip count small enough is unrolled fully, and then no loop is left.

Related

• vectorizedThe loop became a SIMD kernel
• vectorized-innerThe inner loop of a nest became a kernel
• outer-of-nestThe outer loop of a nest, reported for context
• eliminatedThe loop was removed
• inlinedThe call was inlined
• hoistedA call was lifted out of the loop
• if-convertedA branch became branchless arithmetic
• prefetchedA prefetch was inserted