[Mlir-commits] [mlir] [mlir][vector] Add tests for `TransferWritePermutationLowering` (PR #95529)

[Hugo Trachino]

================
@@ -1,14 +1,81 @@
 // RUN: mlir-opt %s --transform-interpreter --split-input-file | FileCheck %s
 
 ///----------------------------------------------------------------------------------------
-/// vector.transfer_write
+/// vector.transfer_write -> vector.transpose + vector.transfer_read
 ///----------------------------------------------------------------------------------------
-/// Input: 
-///   * vector.transfer_write op with a map which _is not_ the permutation of a
-///     minor identity
+/// Input:
+///   * vector.transfer_write op with a permutation that under a transpose
+///     _would be_ a permutation of a minor identity
----------------
nujaa wrote:

I find this confusing. A transpose of a permutation of a minor identity is another permutation of a minor identity. `TransferWritePermutationLowering`  hoists transpositions out of a permutation map. So I'd say 

```suggestion
///   * vector.transfer_write op with a permutation map outputting
///     a permutation of a minor identity.
```

https://github.com/llvm/llvm-project/pull/95529