RX 580 is a GCN 4 GPU. I'm pretty sure the bare minimum for ROCm is GCN 5 (Vega) and up.
I have a Radeon RX 6800 and on my system, I use ROCm's OpenCL for some stuff and HIP for blender cycles rendering. If ROCm were to drop support for my card, that'd be a huge bummer.