[all-commits] [llvm/llvm-project] eaabd7: Revert "[MLIR][Vector] Generalize DropUnitDimFromE...

[Han-Chung Wang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: eaabd762bd54dec75d8fee69f6aa1c26d1cbc68f
      https://github.com/llvm/llvm-project/commit/eaabd762bd54dec75d8fee69f6aa1c26d1cbc68f
  Author: Han-Chung Wang <hanhan0912 at gmail.com>
  Date:   2024-07-03 (Wed, 03 Jul 2024)

  Changed paths:
    M mlir/lib/Dialect/Vector/Transforms/VectorTransforms.cpp
    M mlir/test/Dialect/Vector/vector-transfer-flatten.mlir

  Log Message:
  -----------
  Revert "[MLIR][Vector] Generalize DropUnitDimFromElementwiseOps to non leading / trailing dimensions." (#97652)

Reverts llvm/llvm-project#92934 because it breaks some lowering. To
repro: `mlir-opt -test-vector-transfer-flatten-patterns ~/repro.mlir`

```mlir
func.func @unit_dim_folding(%arg0: vector<1x1xf32>) -> vector<1x1xf32> {
  %cst = arith.constant dense<0.000000e+00> : vector<1x1xf32>
  %0 = arith.mulf %arg0, %cst : vector<1x1xf32>
  return %0 : vector<1x1xf32>
}
```



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