ART can indeed ignore Loom, or better just map the virtual thread API to regular threads. It'd not work well for things like generators but those aren't a targe

ART can indeed ignore Loom, or better just map the virtual thread API to regular threads. It'd not work well for things like generators but those aren't a target of Loom at the moment anyway. The lack of other features in ART does hold things back though. The list of bytecode and API features that ART doesn't have keeps growing and some would be useful on mobile. Panama will add a better FFI and a SIMD API, when will Android get that? Never? That would be a pity. What about Truffle/Polyglot? What about some of the neat tricks allowed by proper invokedynamic? Other than licensing I do wonder why Google can't just bring the nice bits of ART across to HotSpot. It would save library developers a lot of heartache.