[llvm] [Transforms] Avoid repeated hash lookups (NFC) (PR #109244)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-transforms

@llvm/pr-subscribers-pgo

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/109244.diff


1 Files Affected:

- (modified) llvm/include/llvm/Transforms/Utils/SampleProfileLoaderBaseImpl.h (+2-2) 


``````````diff
diff --git a/llvm/include/llvm/Transforms/Utils/SampleProfileLoaderBaseImpl.h b/llvm/include/llvm/Transforms/Utils/SampleProfileLoaderBaseImpl.h
index 5132dca7c6a22b..d86630decd3aea 100644
--- a/llvm/include/llvm/Transforms/Utils/SampleProfileLoaderBaseImpl.h
+++ b/llvm/include/llvm/Transforms/Utils/SampleProfileLoaderBaseImpl.h
@@ -859,9 +859,9 @@ bool SampleProfileLoaderBaseImpl<BT>::propagateThroughEdges(
         LLVM_DEBUG(dbgs() << "Set self-referential edge weight to: ";
                    printEdgeWeight(dbgs(), SelfReferentialEdge));
       }
-      if (UpdateBlockCount && !VisitedBlocks.count(EC) && TotalWeight > 0) {
+      if (UpdateBlockCount && TotalWeight > 0 &&
+          VisitedBlocks.insert(EC).second) {
         BlockWeights[EC] = TotalWeight;
-        VisitedBlocks.insert(EC);
         Changed = true;
       }
     }

``````````

</details>


https://github.com/llvm/llvm-project/pull/109244