[all-commits] [llvm/llvm-project] 4e2efe: [mlir][vector] Add all view-like ops to transfer f...

[Quinn Dawkins via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4e2efea5e8e55b26dd7ac90c6cd1ab7bf6775650
      https://github.com/llvm/llvm-project/commit/4e2efea5e8e55b26dd7ac90c6cd1ab7bf6775650
  Author: Quinn Dawkins <quinn.dawkins at gmail.com>
  Date:   2024-10-02 (Wed, 02 Oct 2024)

  Changed paths:
    M mlir/include/mlir/Dialect/MemRef/Utils/MemRefUtils.h
    M mlir/lib/Dialect/MemRef/Utils/MemRefUtils.cpp
    M mlir/lib/Dialect/Vector/Transforms/VectorTransferOpTransforms.cpp
    M mlir/test/Dialect/Vector/vector-transferop-opt.mlir

  Log Message:
  -----------
  [mlir][vector] Add all view-like ops to transfer flow opt (#110521)

`vector.transfer_*` folding and forwarding currently does not take into
account reshaping view-like memref ops (expand and collapse shape),
leading to potentially invalid store folding or value forwarding. This
patch adds tracking for those (and other) view-like ops. It is still
possible to design operations that alias memrefs without being a view
(e.g. memref in the iter_args of an `scf.for`), so these patterns may
still need revisiting in the future.



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