[llvm] [ADT] Use structured bindings (NFC) (PR #161627)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-adt

Author: Kazu Hirata (kazutakahirata)

<details>
<summary>Changes</summary>

Both Size and Count are just integers, so I am not using & here.


---
Full diff: https://github.com/llvm/llvm-project/pull/161627.diff


1 Files Affected:

- (modified) llvm/include/llvm/ADT/ConcurrentHashtable.h (+2-3) 


``````````diff
diff --git a/llvm/include/llvm/ADT/ConcurrentHashtable.h b/llvm/include/llvm/ADT/ConcurrentHashtable.h
index 6de194db9ba7a..6a943c5b062e7 100644
--- a/llvm/include/llvm/ADT/ConcurrentHashtable.h
+++ b/llvm/include/llvm/ADT/ConcurrentHashtable.h
@@ -253,9 +253,8 @@ class ConcurrentHashTableByPtr {
 
     OS << "\nOverall number of entries = " << OverallNumberOfEntries;
     OS << "\nOverall number of non empty buckets = " << NumberOfNonEmptyBuckets;
-    for (auto &BucketSize : BucketSizesMap)
-      OS << "\n Number of buckets with size " << BucketSize.first << ": "
-         << BucketSize.second;
+    for (auto [Size, Count] : BucketSizesMap)
+      OS << "\n Number of buckets with size " << Size << ": " << Count;
 
     std::stringstream stream;
     stream << std::fixed << std::setprecision(2)

``````````

</details>


https://github.com/llvm/llvm-project/pull/161627