[all-commits] [llvm/llvm-project] 1a2474: [mlir][Linalg] Disable init_tensor elimination by ...

[Nicolas Vasilache via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1a2474b786318c75cef1981eae38268f1701cf4e
      https://github.com/llvm/llvm-project/commit/1a2474b786318c75cef1981eae38268f1701cf4e
  Author: Nicolas Vasilache <ntv at google.com>
  Date:   2022-01-10 (Mon, 10 Jan 2022)

  Changed paths:
    M mlir/include/mlir/Dialect/Linalg/Passes.td
    M mlir/lib/Dialect/Linalg/Transforms/ComprehensiveBufferizePass.cpp
    A mlir/test/Dialect/Linalg/comprehensive-module-bufferize-analysis-init-tensor-elimination.mlir
    M mlir/test/Dialect/Linalg/comprehensive-module-bufferize-analysis.mlir
    A mlir/test/Dialect/Linalg/comprehensive-module-bufferize-init-tensor-elimination.mlir
    M mlir/test/Dialect/Linalg/comprehensive-module-bufferize.mlir

  Log Message:
  -----------
  [mlir][Linalg] Disable init_tensor elimination by default

init_tensor elimination is arguably a pre-optimization that should be separated from comprehensive bufferization.
In any case it is still experimental and easily results in wrong IR with violated SSA def-use orderings.
Isolate the optimization behind a flag, separate the test cases and add a test case that would results in wrong IR.

Differential Revision: https://reviews.llvm.org/D116936