Real example code for software pipelining

I'm currently finding a way that can show how software pipelining is applied to the code.

for(int i = 1; i < N; i++){    D[i] = A[i] * B[i] + 1;}

I found the similar question with the answer using gcc option <-fsel-sched-pipelining>, however, it didn't show any difference after applying the option.

Is there any compiler option that shows software pipelining?