================
@@ -2886,6 +2887,16 @@ class CXXDestructorDecl : public CXXMethodDecl {
     return getCanonicalDecl()->OperatorDelete;
   }
 
+  const FunctionDecl *getOperatorGlobalDelete() const {
+    return getCanonicalDecl()->OperatorGlobalDelete;
+  }
+
+  void setOperatorGlobalDelete(FunctionDecl *OD) {
+    auto *First = cast<CXXDestructorDecl>(getCanonicalDecl());
+    if (OD && !First->OperatorGlobalDelete)
+      First->OperatorGlobalDelete = OD;
----------------
tahonermann wrote:

Good question. Adding a parallel set of functions seems reasonable to me. It 
might also be reasonable to tie the updates together, but I think that might 
unnecessarily increase the serialized AST size for Itanium targets. Perhaps 
that can be avoided in either case; it isn't obvious to me.

While looking at this some more, I noticed that it looks like updates will be 
needed to `clang/lib/AST/ASTImporter.cpp` as well; see the call to 
`setOperatorDelete()` in `ASTNodeImporter::VisitFunctionDecl()`.

https://github.com/llvm/llvm-project/pull/139566
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