[all-commits] [llvm/llvm-project] 21f1a6: [mlir][vector] Additional transpose folding (#138...

[James Newling via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 21f1a616d60934953de3f304aafcad968e770b0a
      https://github.com/llvm/llvm-project/commit/21f1a616d60934953de3f304aafcad968e770b0a
  Author: James Newling <james.newling at gmail.com>
  Date:   2025-05-14 (Wed, 14 May 2025)

  Changed paths:
    M mlir/lib/Dialect/Vector/IR/VectorOps.cpp
    M mlir/test/Dialect/Vector/canonicalize.mlir
    M mlir/test/Dialect/Vector/canonicalize/vector-transpose.mlir
    M mlir/test/Dialect/Vector/vector-transpose-lowering.mlir

  Log Message:
  -----------
  [mlir][vector] Additional transpose folding  (#138347)

Fold transpose with unit-dimensions. Seen in the wild:
```
 %0 = vector.transpose %arg, [0, 2, 1, 3] : vector<6x1x1x4xi8> to vector<6x1x1x4xi8>
```

This transpose can be folded because (1) it preserves the shape and (2)
the shuffled dims are unit extent.

Also addresses comment about static vs anonymous namespace:
https://github.com/llvm/llvm-project/pull/135841#discussion_r2071869067

---------

Signed-off-by: James Newling <james.newling at gmail.com>



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