AMD's Zen based processors support hardware prefetchers which should help in many cases. AOCC does not currently support software prefetchers but we are evaluating adding support for it in future releases if they complement the hardware prefetcher.
If you would like, please share your test case here so that we may have an example of how the community would like to use software prefetching.
thanks for your reply.
I'm testing gcc 8.1. We'll see how it goes. I might have something to share with the community later on.