Mark the major papers for C++20 consistent comparisons as "done", and

zygoloid · zygoloid · commit bc633a42dd40 · 2019-12-15T22:20:06.000-08:00
start publishing the corresponding feature-test macro.
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -546,6 +546,7 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
     Builder.defineMacro("__cpp_conditional_explicit", "201806L");
     Builder.defineMacro("__cpp_constexpr_dynamic_alloc", "201907L");
     Builder.defineMacro("__cpp_constinit", "201907L");
+    Builder.defineMacro("__cpp_impl_three_way_comparison", "201907L");
   }
   if (LangOpts.Char8)
     Builder.defineMacro("__cpp_char8_t", "201811L");
diff --git a/clang/test/Lexer/cxx-features.cpp b/clang/test/Lexer/cxx-features.cpp
@@ -46,6 +46,10 @@
 #error "wrong value for __cpp_impl_destroying_delete"
 #endif
 
+#if check(impl_three_way_comparison, 0, 0, 0, 0, 201907)
+#error "wrong value for __cpp_impl_three_way_comparison"
+#endif
+
 // --- C++17 features ---
 
 #if check(hex_float, 0, 0, 0, 201603, 201603)
diff --git a/clang/www/cxx_status.html b/clang/www/cxx_status.html
@@ -926,11 +926,10 @@ <h2 id="cxx20">C++2a implementation status</h2>
     <tr>
       <td rowspan="8">Consistent comparison (<tt>operator&lt;=&gt;</tt>)</td>
       <td><a href="https://wg21.link/p0515r3">P0515R3</a></td>
-      <td class="partial" align="center">Partial</td>
+      <td rowspan="2" class="svn" align="center">SVN</td>
     </tr>
       <tr> <!-- from Jacksonville -->
         <td><a href="https://wg21.link/p0905r1">P0905R1</a></td>
-        <td class="svn" align="center">SVN</td>
       </tr>
       <tr> <!-- from Rapperswil -->
         <td><a href="https://wg21.link/p1120r0">P1120R0</a></td>

Original file line number	Diff line number	Diff line change
`@@ -546,6 +546,7 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,`
`546`	`546`	`Builder.defineMacro("__cpp_conditional_explicit", "201806L");`
`547`	`547`	`Builder.defineMacro("__cpp_constexpr_dynamic_alloc", "201907L");`
`548`	`548`	`Builder.defineMacro("__cpp_constinit", "201907L");`
	`549`	`+ Builder.defineMacro("__cpp_impl_three_way_comparison", "201907L");`
`549`	`550`	`}`
`550`	`551`	`if (LangOpts.Char8)`
`551`	`552`	`Builder.defineMacro("__cpp_char8_t", "201811L");`