[all-commits] [llvm/llvm-project] 8ba018: [mlir][Vector] Add support for sub-byte transpose ...

[Diego Caballero via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8ba018d72a67050a9c37065ea2668814ebf513a9
      https://github.com/llvm/llvm-project/commit/8ba018d72a67050a9c37065ea2668814ebf513a9
  Author: Diego Caballero <diegocaballero at google.com>
  Date:   2024-01-31 (Wed, 31 Jan 2024)

  Changed paths:
    M mlir/include/mlir/Dialect/Vector/TransformOps/VectorTransformOps.td
    M mlir/include/mlir/Dialect/Vector/Transforms/VectorRewritePatterns.h
    M mlir/lib/Dialect/Vector/TransformOps/VectorTransformOps.cpp
    M mlir/lib/Dialect/Vector/Transforms/VectorEmulateNarrowType.cpp
    M mlir/test/Dialect/Vector/vector-rewrite-narrow-types.mlir

  Log Message:
  -----------
  [mlir][Vector] Add support for sub-byte transpose emulation (#80110)

This PR adds patterns to convert a sub-byte vector transpose into a
sequence of instructions that perform the transpose on i8 vector
elements. Whereas this rewrite may not lead to the absolute peak
performance, it should ensure correctness when dealing with sub-byte
transposes.