[Mlir-commits] [mlir] [mlir][linalg] Add pattern to clean unused results after fusion (PR #158627)

[llvmlistbot at llvm.org]

MaheshRavishankar wrote:

> After fusion, there are cases where the **payload still reads that tied block-arg to build another live result**, but the corresponding result is unused. In that situation **the pattern doesn’t fire**; the op retains the outs[i]/result pair, which prevents further fusion and harms readability.

Yeah, I thought that might be what you are trying to fix, but I think the input is wrong, and the semantics of the input is unclear, so any transformation on those kind of operations is sketchy.

https://github.com/llvm/llvm-project/pull/158627