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

[Guray Ozen]

grypp wrote:

I was not aware of that there is pass, that's awesome! 

> It does some relatively expensive computations including a localized alias analysis, so it absolutely shouldn't run as part of canonicalization.

Why? There is one and only reason we use GPUs and it is performance. This pass sounds like essential to me. 

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