[llvm] 13647d8 - [ADT] Refactor DenseSet::insert (NFC) (#157324)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-09-07T10:39:38-07:00
New Revision: 13647d82eb841ff4981707f1b1cc120517f9880d

URL: https://github.com/llvm/llvm-project/commit/13647d82eb841ff4981707f1b1cc120517f9880d
DIFF: https://github.com/llvm/llvm-project/commit/13647d82eb841ff4981707f1b1cc120517f9880d.diff

LOG: [ADT] Refactor DenseSet::insert (NFC) (#157324)

DenseMap::try_emplace can default-construct DenseSetEmptyKey, so we
don't need to pass Empty on our own.

Added: 
    

Modified: 
    llvm/include/llvm/ADT/DenseSet.h

Removed: 
    


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diff  --git a/llvm/include/llvm/ADT/DenseSet.h b/llvm/include/llvm/ADT/DenseSet.h
index 8ba74f6b9f746..281d4d1c78cc0 100644
--- a/llvm/include/llvm/ADT/DenseSet.h
+++ b/llvm/include/llvm/ADT/DenseSet.h
@@ -192,13 +192,11 @@ class DenseSetImpl {
   void erase(const_iterator CI) { return TheMap.erase(CI.I); }
 
   std::pair<iterator, bool> insert(const ValueT &V) {
-    detail::DenseSetEmpty Empty;
-    return TheMap.try_emplace(V, Empty);
+    return TheMap.try_emplace(V);
   }
 
   std::pair<iterator, bool> insert(ValueT &&V) {
-    detail::DenseSetEmpty Empty;
-    return TheMap.try_emplace(std::move(V), Empty);
+    return TheMap.try_emplace(std::move(V));
   }
 
   /// Alternative version of insert that uses a 
diff erent (and possibly less