[Mlir-commits] [mlir] [mlir][CSE] fix use-after-free (PR #203849)

llvmlistbot at llvm.org llvmlistbot at llvm.org
Mon Jun 15 04:09:10 PDT 2026


github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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<details>
<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- mlir/lib/Transforms/Utils/CSE.cpp --diff_from_common_commit
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

</details>

<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/mlir/lib/Transforms/Utils/CSE.cpp b/mlir/lib/Transforms/Utils/CSE.cpp
index 8b9dbb9c4..5af76bc99 100644
--- a/mlir/lib/Transforms/Utils/CSE.cpp
+++ b/mlir/lib/Transforms/Utils/CSE.cpp
@@ -158,7 +158,7 @@ void CSEDriver::replaceUsesAndDelete(ScopedMapTy &knownValues, Operation *op,
   // Replace all uses, but do not remove the operation yet. This does not
   // notify the listener because the original op is not erased.
   rewriter.replaceUsesWithIf(op->getResults(), existing->getResults(),
-                              wasVisited);
+                             wasVisited);
 
   // There may be some remaining uses of the operation.
   if (op->use_empty())

``````````

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https://github.com/llvm/llvm-project/pull/203849


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