Andrzej Warzyński 1b2c8f104f [mlir][linalg] Extract GeneralizePadOpPattern into a standalone transformation (#117329) ...

Currently, `GeneralizePadOpPattern` is grouped under
`populatePadOpVectorizationPatterns`. However, as noted in #111349, this
transformation "decomposes" rather than "vectorizes" `tensor.pad`. As
such, it functions as:
  * a vectorization _pre-processing_ transformation, not
  * a vectorization transformation itself.

To clarify its purpose, this PR turns `GeneralizePadOpPattern` into a
standalone transformation by:
  * introducing a dedicated `populateDecomposePadPatterns` method,
  * adding a `apply_patterns.linalg.decompose_pad` Transform Dialect Op,
  * removing it from `populatePadOpVectorizationPatterns`.

In addition, to better reflect its role, it is renamed as "decomposition"
rather then "generalization".  This is in line with the recent renaming
of similar ops, i.e. tensor.pack/tensor.unpack Ops in #116439.

2024-11-26 08:11:15 +00:00

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