Mahesh Ravishankar 2f637fe730 [mlir][TilingInterface] Enable tile and fuse using TilingInterface. ...

This patch implements tile and fuse transformation for ops that
implement the tiling interface. To do so,
- `TilingInterface` needs a new method that generates a tiled
  implementation of the operation based on the tile of the result
  needed.
- A pattern is added that replaces a `tensor.extract_slice` whose
  source is defined by an operation that implements the
  `TilingInterface` with a tiled implementation that produces the
  extracted slice in-place (using the method added to
  `TilingInterface`).
- A pattern is added that takes a sequence of operations that
  implement the `TilingInterface` (for now `LinalgOp`s), tiles the
  consumer, and greedily fuses its producers iteratively.

Differential Revision: https://reviews.llvm.org/D127809

2022-06-21 17:22:58 +00:00

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