[Mlir-commits] [mlir] [mlir] Refactor opaque properties to make them type-safe (PR #185157)

[Krzysztof Drewniak]

krzysz00 wrote:

We need the void constructioor because `PropertyRef prop;` makes sense in the same way that `Attribute attr;` does 

https://github.com/llvm/llvm-project/pull/185157