[PATCH] D147717: [C++20][NFC] Claim full support for consteval again

[Mariya Podchishchaeva via Phabricator via cfe-commits]

Fznamznon created this revision.
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After resolving several outstanding issues now is the time to mark it as
fully supported.

Fixes https://github.com/llvm/llvm-project/issues/57094


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147717

Files:
  clang/lib/Frontend/InitPreprocessor.cpp
  clang/test/Lexer/cxx-features.cpp
  clang/www/cxx_status.html


Index: clang/www/cxx_status.html
===================================================================
--- clang/www/cxx_status.html
+++ clang/www/cxx_status.html
@@ -1120,14 +1120,7 @@
     <tr>
       <td rowspan=2>Immediate functions (<tt>consteval</tt>)</td>
       <td><a href="https://wg21.link/p1073r3">P1073R3</a></td>
-      <td class="partial" align="center">
-        <details><summary>Clang 15 (Partial)</summary>
-          Clang still incorrectly defers some consteval executions to runtime,
-          resulting in CodeGen crashes. Additionally, Clang does not properly
-          handle default arguments in consteval functions under all
-          circumstances.
-        </details>
-      </td>
+      <td class="full" align="center">Clang 17</td>
     </tr>
       <tr> <!-- from Prague -->
         <td><a href="https://wg21.link/p1937r2">P1937R2</a></td>
Index: clang/test/Lexer/cxx-features.cpp
===================================================================
--- clang/test/Lexer/cxx-features.cpp
+++ clang/test/Lexer/cxx-features.cpp
@@ -78,8 +78,7 @@
 #error "wrong value for __cpp_conditional_explicit"
 #endif
 
-#if check(consteval, 0, 0, 0, 0, 0, 0)
-// FIXME: 201811 in C++20
+#if check(consteval, 0, 0, 0, 0, 201811, 201811)
 #error "wrong value for __cpp_consteval"
 #endif
 
Index: clang/lib/Frontend/InitPreprocessor.cpp
===================================================================
--- clang/lib/Frontend/InitPreprocessor.cpp
+++ clang/lib/Frontend/InitPreprocessor.cpp
@@ -681,7 +681,7 @@
     // Refer to the discussion of this at https://reviews.llvm.org/D128619.
     Builder.defineMacro("__cpp_concepts", "201907L");
     Builder.defineMacro("__cpp_conditional_explicit", "201806L");
-    //Builder.defineMacro("__cpp_consteval", "201811L");
+    Builder.defineMacro("__cpp_consteval", "201811L");
     Builder.defineMacro("__cpp_constexpr_dynamic_alloc", "201907L");
     Builder.defineMacro("__cpp_constinit", "201907L");
     Builder.defineMacro("__cpp_impl_coroutine", "201902L");


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