[llvm] 7eb5c08 - [ADT] Use "= default" in DirectedGraph.h (#161628)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-10-02T09:27:09-07:00
New Revision: 7eb5c08ac3a5bc524a5fe4e2e91db3a5b1ffe3cd

URL: https://github.com/llvm/llvm-project/commit/7eb5c08ac3a5bc524a5fe4e2e91db3a5b1ffe3cd
DIFF: https://github.com/llvm/llvm-project/commit/7eb5c08ac3a5bc524a5fe4e2e91db3a5b1ffe3cd.diff

LOG: [ADT] Use "= default" in DirectedGraph.h (#161628)

This patch drops user copy/move constructors and assignment operators
of DirectedGraph to adhere to the Rule of Zero.

Now, the original code:

  DGraphType &operator=(const DGraphType &&G)

is most likely unintended -- a move assignment operator with const
r-value reference.  This patch fixes that.

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/include/llvm/ADT/DirectedGraph.h b/llvm/include/llvm/ADT/DirectedGraph.h
index 83c0bea6393c4..fb6b180f77e6b 100644
--- a/llvm/include/llvm/ADT/DirectedGraph.h
+++ b/llvm/include/llvm/ADT/DirectedGraph.h
@@ -181,16 +181,6 @@ template <class NodeType, class EdgeType> class DirectedGraph {
 
   DirectedGraph() = default;
   explicit DirectedGraph(NodeType &N) : Nodes() { addNode(N); }
-  DirectedGraph(const DGraphType &G) : Nodes(G.Nodes) {}
-  DirectedGraph(DGraphType &&RHS) : Nodes(std::move(RHS.Nodes)) {}
-  DGraphType &operator=(const DGraphType &G) {
-    Nodes = G.Nodes;
-    return *this;
-  }
-  DGraphType &operator=(const DGraphType &&G) {
-    Nodes = std::move(G.Nodes);
-    return *this;
-  }
 
   const_iterator begin() const { return Nodes.begin(); }
   const_iterator end() const { return Nodes.end(); }