[flang-commits] [flang] [mlir] [mlir][IR] Move `match` and `rewrite` functions into separate class (PR #129861)

[River Riddle via flang-commits]

https://github.com/River707 approved this pull request.

Seems reasonable to me. This does raise a question though, what actually needs separate match and rewrite these days? Do we even need to carry around this code? Seems like we could just deprecate this and remove it (it's mostly legacy from the early days anyways).

https://github.com/llvm/llvm-project/pull/129861