[all-commits] [llvm/llvm-project] 27bb4d: [mlir][vector] Update `CastAwayTransfer{Read|Write...

[Andrzej Warzyński via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 27bb4d2432d9e5643c7f4f5df495c1580fe07da8
      https://github.com/llvm/llvm-project/commit/27bb4d2432d9e5643c7f4f5df495c1580fe07da8
  Author: Andrzej Warzyński <andrzej.warzynski at arm.com>
  Date:   2026-09-08 (Tue, 08 Sep 2026)

  Changed paths:
    M mlir/lib/Dialect/Vector/Transforms/VectorDropLeadUnitDim.cpp
    M mlir/test/Dialect/Vector/vector-dropleadunitdim-transforms.mlir

  Log Message:
  -----------
  [mlir][vector] Update `CastAwayTransfer{Read|Write}LeadingOneDim` (#219499)

Updates `CastAwayTransfer{Read|Write}LeadingOneDim` to use
`vector.shape_cast`, rather than `vector.extract`, as the canonical form
for stripping unit dimensions.

This change was originally implemented by @krzysz00 in #196206, but was
subsequently reverted in #199546. This PR intentionally restores only a
subset of #196206, making it easier to identify and triage any potential
regressions.

Co-authored-by: Krzysztof Drewniak <Krzysztof.Drewniak at amd.com>



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