[all-commits] [llvm/llvm-project] b16565: [mlir][sparse] Return actual identity map instead ...

[Yinying Li via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b165650aee851b15c4f87f0d510b37cb1bf6b814
      https://github.com/llvm/llvm-project/commit/b165650aee851b15c4f87f0d510b37cb1bf6b814
  Author: Yinying Li <107574043+yinying-lisa-li at users.noreply.github.com>
  Date:   2023-10-26 (Thu, 26 Oct 2023)

  Changed paths:
    M mlir/include/mlir/Dialect/SparseTensor/IR/SparseTensorAttrDefs.td
    M mlir/lib/Dialect/SparseTensor/IR/Detail/DimLvlMap.cpp
    M mlir/lib/Dialect/SparseTensor/IR/SparseTensorDialect.cpp
    M mlir/test/python/dialects/sparse_tensor/dialect.py

  Log Message:
  -----------
  [mlir][sparse] Return actual identity map instead of null map (#70365)

Changes:

1. For both dimToLvl and lvlToDim, always returns the actual map instead
of AffineMap() for identity map.
2. Updated custom builder for encoding to have default values.
3. Non-inferable lvlToDim will still return AffineMap() during
inference, so it will be caught by verifier.