[flang-commits] [flang] [flang] Added extension point callbacks to default FIR optimizer pipeline. (PR #90674)

[Kiran Chandramohan via flang-commits]

https://github.com/kiranchandramohan approved this pull request.

Thanks Vijay for the patch. I have a couple of minor questions inline. 

It might be good to document the avaliability of these callbacks in flang/docs. Is this intended for Drivers (upstream/downstream) to register callbacks statically? Or is the plan to allow drivers to load FIR/MLIR passes dynamically with this feature?

https://github.com/llvm/llvm-project/pull/90674