In Java or other languages with bounds-checked arrays, you would typically just loop from 0 to the end of the array. In Java the JIT will analyze the loop, see

In Java or other languages with bounds-checked arrays, you would typically just loop from 0 to the end of the array. In Java the JIT will analyze the loop, see that it is bounded by the length of the array, conclude all accesses are in-bounds and eliminate bounds checks. Virgil does this simple type of bounds check elimination as well in its static compiler, but its analysis is not quite as sophisticated as Java JITs.