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

[via cfe-commits]

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@@ -3543,7 +3543,14 @@ def : Separate<["-"], "fnew-alignment">, Alias<fnew_alignment_EQ>;
 def : Flag<["-"], "faligned-new">, Alias<faligned_allocation>;
 def : Flag<["-"], "fno-aligned-new">, Alias<fno_aligned_allocation>;
 def faligned_new_EQ : Joined<["-"], "faligned-new=">;
-
+defm cxx_type_aware_allocators : BoolFOption<"experimental-cxx-type-aware-allocators",
+  LangOpts<"TypeAwareAllocators">, DefaultFalse,
+  PosFlag<SetTrue, [], [ClangOption], "Enable experimental C++YY type aware allocator operators">,
+  NegFlag<SetFalse>, BothFlags<[], [ClangOption, CC1Option]>>;
----------------
cor3ntin wrote:

```suggestion
  PosFlag<SetTrue, [], [ClangOption], "Enable experimental C++ type aware allocator operators">,
  NegFlag<SetFalse>, BothFlags<[], [ClangOption, CC1Option]>>;
```

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