[all-commits] [llvm/llvm-project] 38098b: [mlir][vector] Disable CompressStoreOp/ExpandLoadO...

[Andrzej Warzyński via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 38098b486e44ad077b674e512eee399fc6f5a30c
      https://github.com/llvm/llvm-project/commit/38098b486e44ad077b674e512eee399fc6f5a30c
  Author: Andrzej Warzyński <andrzej.warzynski at arm.com>
  Date:   2024-11-29 (Fri, 29 Nov 2024)

  Changed paths:
    M mlir/include/mlir/Dialect/Vector/IR/VectorOps.td
    M mlir/include/mlir/IR/CommonTypeConstraints.td
    M mlir/test/Dialect/Vector/invalid.mlir

  Log Message:
  -----------
  [mlir][vector] Disable CompressStoreOp/ExpandLoadOp for scalable vectors (#117538)

These operations were introduced as counterparts to the following LLVM
intrinsics:

  * `@llvm.masked.expandload.*`,
  * `@llvm.masked.compressstore.*`.

Currently, there is minimal test coverage for scalable vector use cases
involving these Ops (both LLVM and MLIR). Additionally, the verifier is
flawed  - it incorrectly allows mixing fixed-width and scalable vectors.

To address these issues, scalable vector support for these Ops is being
disabled for now. This decision can be revisited if a clear need arises
for their use with scalable vectors in the future.



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