[Mlir-commits] [mlir] [mlir][Transforms] CSE: Add filter options to control CSE'ing (PR #115639)

[Mehdi Amini]

joker-eph wrote:

> Some context: In my use case, certain ops with regions should be a hoisting barrier for certain nested ops. CSE is one example of hoisting (by de-deduplication). Another one is the GreedyPatternRewriteDriver, which hoists constants.

In general, every request I saw about this were instead better addressed with a reverse transformation: this is something that needs profitability and would be suitable even if the input program would have the constant (or the expressions) already outside the target region.



https://github.com/llvm/llvm-project/pull/115639