[Mlir-commits] [mlir] [Bufferization] Avoid repeated hash lookups (NFC) (PR #108925)

[llvmlistbot at llvm.org]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-mlir-bufferization

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/108925.diff


1 Files Affected:

- (modified) mlir/lib/Dialect/Bufferization/Transforms/OneShotAnalysis.cpp (+1-2) 


``````````diff
diff --git a/mlir/lib/Dialect/Bufferization/Transforms/OneShotAnalysis.cpp b/mlir/lib/Dialect/Bufferization/Transforms/OneShotAnalysis.cpp
index d69c194c55f7d3..829e954d53b259 100644
--- a/mlir/lib/Dialect/Bufferization/Transforms/OneShotAnalysis.cpp
+++ b/mlir/lib/Dialect/Bufferization/Transforms/OneShotAnalysis.cpp
@@ -284,9 +284,8 @@ static bool isReachable(Block *from, Block *to, ArrayRef<Block *> except) {
       continue;
     if (next == to)
       return true;
-    if (visited.contains(next))
+    if (!visited.insert(next).second)
       continue;
-    visited.insert(next);
     for (Block *succ : next->getSuccessors())
       worklist.push_back(succ);
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/108925