You don’t need to make all native extensions fast. You need to make some of the most common things fast and keep the rest of them working. It’s fine if not all

You don’t need to make all native extensions fast. You need to make some of the most common things fast and keep the rest of them working. It’s fine if not all extensions adopt a JIT interface. The thing about moving GC is a red herring. Ruby wouldn’t benefit from it. JSC doesn’t use moving GC.