[clang] [RFC] Initial implementation of P2719 (PR #113510)

[via cfe-commits]

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@@ -3482,15 +3486,40 @@ bool FunctionDecl::isDestroyingOperatorDelete() const {
   //   Within a class C, a single object deallocation function with signature
   //     (T, std::destroying_delete_t, <more params>)
   //   is a destroying operator delete.
-  if (!isa<CXXMethodDecl>(this) || getOverloadedOperator() != OO_Delete ||
-      getNumParams() < 2)
+  if (!isa<CXXMethodDecl>(this) || getOverloadedOperator() != OO_Delete)
+    return false;
+
+  unsigned NumParams = getNumParams();
+  unsigned DestroyingDeleteTagParam = 1;
+  bool IsTypeAware = false;
+  if (NumParams > 0)
+    IsTypeAware = getParamDecl(0)->getType()->isTypeIdentitySpecialization();
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cor3ntin wrote:

There is some duplication with Sema::isTypeAwareOperatorNewOrDelete, can we simplify?

https://github.com/llvm/llvm-project/pull/113510