[all-commits] [llvm/llvm-project] 4a6ee2: [mlir][linalg] Fix bug in the fusion on tensors in...

[Tobias Gysi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4a6ee23d832f823d71faf7d0dca1b6eec71df253
      https://github.com/llvm/llvm-project/commit/4a6ee23d832f823d71faf7d0dca1b6eec71df253
  Author: Tobias Gysi <gysit at google.com>
  Date:   2021-05-05 (Wed, 05 May 2021)

  Changed paths:
    M mlir/lib/Dialect/Linalg/Transforms/FusionOnTensors.cpp
    M mlir/test/Dialect/Linalg/fusion-tensor.mlir

  Log Message:
  -----------
  [mlir][linalg] Fix bug in the fusion on tensors index op handling.

The old index op handling let the new index operations point back to the
producer block. As a result, after fusion some index operations in the
fused block had back references to the old producer block resulting in
illegal IR. The patch now relies on a block and value mapping to avoid
such back references.

Differential Revision: https://reviews.llvm.org/D101887