[all-commits] [llvm/llvm-project] 885072: [mlir][Vector] Add a pattern to lower 2-D vector.t...

[Nicolas Vasilache via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 885072820c4ededc5ffa570ba8fd89b001fb9f11
      https://github.com/llvm/llvm-project/commit/885072820c4ededc5ffa570ba8fd89b001fb9f11
  Author: Nicolas Vasilache <nicolas.vasilache at gmail.com>
  Date:   2021-11-02 (Tue, 02 Nov 2021)

  Changed paths:
    M mlir/include/mlir/Dialect/Vector/VectorRewritePatterns.h
    M mlir/lib/Dialect/Vector/VectorTransforms.cpp
    A mlir/test/Dialect/Vector/vector-transpose-to-shuffle.mlir
    M mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp

  Log Message:
  -----------
  [mlir][Vector] Add a pattern to lower 2-D vector.transpose to shape_cast+shuffle.

The 2-D case can be rewritten to generate quite fewer instructions and a single vector.shuffle which seems to provide a nice performance boost.
Add this arrow to our quiver by exposing it with a new vector transform option.

Differential Revision: https://reviews.llvm.org/D113062