[Mlir-commits] [mlir] [mlir][vector] Generalize multi_reduction innerparallel unrolling to N dimensions (PR #182301)

[Andrzej Warzyński]

banach-space wrote:

> * Adds `UnrollMultiReductionInnerParallelBaseCase` pattern.
> * Adds `UnrollMultiReductionInnerParallelGeneralCase` pattern.

Why do we need both? 

In general, your summary focuses on _what_, but that can be inferred from the code. Could you provide a bit more _why_? Note from https://mlir.llvm.org/getting_started/Contributing/#commit-messages:
> Prefer describing why the change is implemented rather than what it does.

I would really appreciate a bit more context here - it will make tracking the history of these transformations easier.  

https://github.com/llvm/llvm-project/pull/182301