[Mlir-commits] [mlir] [mlir][gpu] Eliminate redundant gpu.barrier ops (PR #71575)

[Lei Zhang]

antiagainst wrote:

@grypp Agreed that we can do better for eliding unnecessary barriers. That can happen as a next step to me; and we'd likely need a dedicated pass to have some complicated analysis. Using canonicalization pattern for this simple cleanup is actually a good match here I think. 

@spaceotter We need a test for this.

https://github.com/llvm/llvm-project/pull/71575