[all-commits] [llvm/llvm-project] 9b6bd7: [mlir][IR] Add listener notifications for pattern ...

[Matthias Springer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9b6bd7093ccb07ba8d6987220b2703549af02933
      https://github.com/llvm/llvm-project/commit/9b6bd7093ccb07ba8d6987220b2703549af02933
  Author: Matthias Springer <me at m-sp.org>
  Date:   2024-03-10 (Sun, 10 Mar 2024)

  Changed paths:
    M mlir/include/mlir/IR/PatternMatch.h
    M mlir/lib/Transforms/Utils/DialectConversion.cpp
    M mlir/lib/Transforms/Utils/GreedyPatternRewriteDriver.cpp

  Log Message:
  -----------
  [mlir][IR] Add listener notifications for pattern begin/end (#84131)

This commit adds two new notifications to `RewriterBase::Listener`:
* `notifyPatternBegin`: Called when a pattern application begins during
a greedy pattern rewrite or dialect conversion.
* `notifyPatternEnd`: Called when a pattern application finishes during
a greedy pattern rewrite or dialect conversion.

The listener infrastructure already provides a `notifyMatchFailure`
callback that notifies about the reason for a pattern match failure. The
two new notifications provide additional information about pattern
applications.

This change is in preparation of improving the handle update mechanism
in the `apply_conversion_patterns` transform op.



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