Given this loop:

    for (int i = 0; i < DST.length; i++) {
        DST[i] = SRC1[i] + SRC2[DST.length - 1 - i];
    }

C2 should be able to vectorize this loop by reversing the elements after loading from SRC2. Similarly, a reduction loop like this should also be vectorized:

    int sum = 0;
    for (int i = 0; i < DST.length; i++) {
        sum += SRC1[i] + SRC2[DST.length - 1 - i];
    }