User-defined literals are done.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152396 91177308-0d34-0410-b5e6-96231b3b80d8

docs/LanguageExtensions.html

@@ -819,7 +819,7 @@ support for Unicode string literals is enabled.</p>
 
 <h4 id="cxx_user_literals">C++11 user-defined literals</h4>
 
-<p>Use <tt>__has_feature(cxx_user_literals)</tt> to determine if support for user-defined literals is enabled. Clang does not currently support this feature.</p>
+<p>Use <tt>__has_feature(cxx_user_literals)</tt> to determine if support for user-defined literals is enabled.</p>
 
 <h4 id="cxx_variadic_templates">C++11 variadic templates</h4>
 

lib/Lex/PPMacroExpansion.cpp

@@ -640,7 +640,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) {
            .Case("c_atomic", LangOpts.C11)
            .Case("c_generic_selections", LangOpts.C11)
            .Case("c_static_assert", LangOpts.C11)
-           // C++0x features
+           // C++11 features
            .Case("cxx_access_control_sfinae", LangOpts.CPlusPlus0x)
            .Case("cxx_alias_templates", LangOpts.CPlusPlus0x)
            .Case("cxx_alignas", LangOpts.CPlusPlus0x)
@@ -672,7 +672,7 @@ static bool HasFeature(const Preprocessor &PP, const IdentifierInfo *II) {
            .Case("cxx_trailing_return", LangOpts.CPlusPlus0x)
            .Case("cxx_unicode_literals", LangOpts.CPlusPlus0x)
            .Case("cxx_unrestricted_unions", LangOpts.CPlusPlus0x)
-         //.Case("cxx_user_literals", false)
+           .Case("cxx_user_literals", LangOpts.CPlusPlus0x)
            .Case("cxx_variadic_templates", LangOpts.CPlusPlus0x)
            // Type traits
            .Case("has_nothrow_assign", LangOpts.CPlusPlus)

test/Lexer/has_feature_cxx0x.cpp

@@ -244,3 +244,12 @@ int no_unrestricted_unions();
 
 // CHECK-0X: has_unrestricted_unions
 // CHECK-NO-0X: no_unrestricted_unions
+
+#if __has_feature(cxx_user_literals)
+int has_user_literals();
+#else
+int no_user_literals();
+#endif
+
+// CHECK-0X: has_user_literals
+// CHECK-NO-0X: no_user_literals

www/cxx_status.html

@@ -213,7 +213,7 @@ with clang; other versions have not been tested.</p>
     <tr>
       <td>User-defined literals</td>
       <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2765.pdf">N2765</a></td>
-      <td class="none" align="center">No</td>
+      <td class="svn" align="center">SVN</td>
     </tr>
     <tr>
       <td>Standard Layout Types</td>