[clang] [flang] [Flang][FIR] Introduce FIRToCoreMLIR pass. (PR #168703)

[Razvan Lupusoru via cfe-commits]

razvanlupusoru wrote:

> Yes, that is what I would want to be able to do. @NexMing, thanks for being willing to help! I think the first step is to validate that the idea is possible. There are some differences between fir.declare and llvm.dbg.declare, the most relevant one being that fir.declare returns a result, and I think that fir.declare_value should not:

@NexMing Have you taken any steps towards evaluating this?

https://github.com/llvm/llvm-project/pull/168703