[all-commits] [llvm/llvm-project] d88293: [mlir][vector] Disable `BreakDownVectorBitCast` fo...

[Andrzej Warzyński via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d88293d8a2005b19f89a86252c60102cec6c9b01
      https://github.com/llvm/llvm-project/commit/d88293d8a2005b19f89a86252c60102cec6c9b01
  Author: Andrzej Warzyński <andrzej.warzynski at arm.com>
  Date:   2025-01-24 (Fri, 24 Jan 2025)

  Changed paths:
    M mlir/lib/Dialect/Vector/Transforms/VectorTransforms.cpp
    M mlir/test/Dialect/Vector/vector-break-down-bitcast.mlir

  Log Message:
  -----------
  [mlir][vector] Disable `BreakDownVectorBitCast` for scalable vectors (#122725)

`BreakDownVectorBitCast` leverages
  * `vector.extract_strided_slices` + `vector.insert_strided_slices`

As these Ops do not support extracting scalable sub-vectors (i.e.
extracting/inserting a fraction of a scalable dim), it's best to bail
out.



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