[ozinenko]

It will be as good as the sum of work put into it by the people in the ecosystem. That is the reason why MLIR was open-sourced very early in the development process, instead of thrown over the fence after being driven to completion by Google for a particular task.

Rust and friends do have IRs on top of LLVM IR. Developing and maintaining those IRs comes with an engineering cost. MLIR lets them partially share that cost with other projects that have similar needs.