[libcxx-commits] [libcxx] [libc++][NFC] Replace tag dispatch with `if constexpr` in `<any>` and `<variant>` (PR #173538)

[Nikolas Klauser via libcxx-commits]

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@@ -918,17 +918,11 @@ protected:
     if (this->index() == _Ip) {
       __a.__value = std::forward<_Arg>(__arg);
     } else {
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philnik777 wrote:

Can we make this an `else if constexpr` instead? (GH is being weird, so I can't make a suggestion diff)

https://github.com/llvm/llvm-project/pull/173538