[clang] [C++26] Implement P2752R3 'Static storage for braced initializers' (PR #197458)

[Yihan Wang via cfe-commits]

================
@@ -135,7 +135,7 @@ <h2 id="cxx26">C++2c implementation status</h2>
  <tr>
   <td>Static storage for braced initializers</td>
   <td><a href="https://wg21.link/P2752R3">P2752R3</a> (<a href="#dr">DR</a>)</td>
-  <td class="none" align="center">No</td>
+  <td class="unreleased" align="center">Clang 23</td>
----------------
yronglin wrote:

I have revert the changes in CodeGen, and added more test for constant expression.

https://github.com/llvm/llvm-project/pull/197458