[all-commits] [llvm/llvm-project] f5f1a5: [mlir][Linalg] Handle fusion on tensors for projec...

[Han-Chung Wang via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: f5f1a5c2448e31f3c7e6f85b378372a02f8d3e43
      https://github.com/llvm/llvm-project/commit/f5f1a5c2448e31f3c7e6f85b378372a02f8d3e43
  Author: Hanhan Wang <hanchung at google.com>
  Date:   2020-12-03 (Thu, 03 Dec 2020)

  Changed paths:
    M mlir/include/mlir/Dialect/Linalg/Utils/Utils.h
    M mlir/lib/Dialect/Linalg/Transforms/FusionOnTensors.cpp
    M mlir/lib/Dialect/Linalg/Utils/Utils.cpp
    M mlir/test/Dialect/Linalg/reshape_fusion.mlir

  Log Message:
  -----------
  [mlir][Linalg] Handle fusion on tensors for projected permutation.

In the past, the reshape op can be folded only if the indexing map is
permutation in consumer's usage. We can relax to condition to be projected
permutation.

This patch still limits the fusion for scalar cases. Scalar case is a corner
case, because we need to decide where to put extra dims.

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D92466