[Mlir-commits] [flang] [mlir] [mlir][CSE] Introduce hoist-pure-ops logic to CSE pass (PR #180556)

[Mehdi Amini]

joker-eph wrote:

> This means that although I am hoisting operations here, it does not fundamentally change the relative positioning of blocks within the region. Therefore, DominanceInfo and PostDominanceInfo remain valid.

Contrary to LLVM, we do have regions: when we CSE an operation with regions it means we're deleting blocks. Are we deleting the entry for these regions in the analysis cache?

https://github.com/llvm/llvm-project/pull/180556