I mean it apparently works on RDNA1 now after some effort but they never really attempted to support it because they initially only supported workstation RDNA cards but they didn't have a workstation RDNA1 release.
I wish they had comprehensive support for basically all recent GPU releases but tbh I'd rather they focus on perfecting support for the current and upcoming generations than spread their efforts too thin.
And ideally with time backports to the older cards will come with time but it's really not a priority over issues on the current generation because those RDNA1 cards were never actually supported in the first place.
https://www.reddit.com/r/ROCm/comments/1bd8vde/psa_rdna1_gfx...
I wish they had comprehensive support for basically all recent GPU releases but tbh I'd rather they focus on perfecting support for the current and upcoming generations than spread their efforts too thin.
And ideally with time backports to the older cards will come with time but it's really not a priority over issues on the current generation because those RDNA1 cards were never actually supported in the first place.