[Mlir-commits] [mlir] [mlir][gpu] Add verification to disallow nested `gpu.launch` ops (PR #151968)

[Longsheng Mou]

CoTinker wrote:

> I don't believe this should be a verifier error because that does not compose with inlining. Making this part of the verifier would mean that the inliner transformation would be subject to create invalid IR without any possibility to prevent this.
> 
> Instead we should catch this in gpu-kernel-outlining and error out appropriately.

Okay, I will submit a new PR to fix this issue.

https://github.com/llvm/llvm-project/pull/151968