<p>Woot!!! </p>
<div class="gmail_quote">On Feb 14, 2012 1:02 PM, "Richard Smith" <<a href="mailto:richard-llvm@metafoo.co.uk">richard-llvm@metafoo.co.uk</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Author: rsmith<br>
Date: Tue Feb 14 16:56:17 2012<br>
New Revision: 150524<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=150524&view=rev" target="_blank">http://llvm.org/viewvc/llvm-project?rev=150524&view=rev</a><br>
Log:<br>
Advertize support for constexpr.<br>
<br>
Modified:<br>
    cfe/trunk/docs/LanguageExtensions.html<br>
    cfe/trunk/lib/Lex/PPMacroExpansion.cpp<br>
    cfe/trunk/test/Lexer/has_feature_cxx0x.cpp<br>
<br>
Modified: cfe/trunk/docs/LanguageExtensions.html<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/LanguageExtensions.html?rev=150524&r1=150523&r2=150524&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/LanguageExtensions.html?rev=150524&r1=150523&r2=150524&view=diff</a><br>

==============================================================================<br>
--- cfe/trunk/docs/LanguageExtensions.html (original)<br>
+++ cfe/trunk/docs/LanguageExtensions.html Tue Feb 14 16:56:17 2012<br>
@@ -668,7 +668,7 @@<br>
<br>
 <p>Use <tt>__has_feature(cxx_constexpr)</tt> to determine if support<br>
 for generalized constant expressions (e.g., <tt>constexpr</tt>) is<br>
-enabled. Clang does not currently implement this feature.</p><br>
+enabled.</p><br>
<br>
 <h4 id="cxx_decltype">C++11 <tt>decltype()</tt></h4><br>
<br>
<br>
Modified: cfe/trunk/lib/Lex/PPMacroExpansion.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/PPMacroExpansion.cpp?rev=150524&r1=150523&r2=150524&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/PPMacroExpansion.cpp?rev=150524&r1=150523&r2=150524&view=diff</a><br>

==============================================================================<br>
--- cfe/trunk/lib/Lex/PPMacroExpansion.cpp (original)<br>
+++ cfe/trunk/lib/Lex/PPMacroExpansion.cpp Tue Feb 14 16:56:17 2012<br>
@@ -638,7 +638,7 @@<br>
            .Case("cxx_atomic", LangOpts.CPlusPlus0x)<br>
            .Case("cxx_attributes", LangOpts.CPlusPlus0x)<br>
            .Case("cxx_auto_type", LangOpts.CPlusPlus0x)<br>
-         //.Case("cxx_constexpr", false);<br>
+           .Case("cxx_constexpr", LangOpts.CPlusPlus0x)<br>
            .Case("cxx_decltype", LangOpts.CPlusPlus0x)<br>
            .Case("cxx_default_function_template_args", LangOpts.CPlusPlus0x)<br>
            .Case("cxx_defaulted_functions", LangOpts.CPlusPlus0x)<br>
<br>
Modified: cfe/trunk/test/Lexer/has_feature_cxx0x.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Lexer/has_feature_cxx0x.cpp?rev=150524&r1=150523&r2=150524&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Lexer/has_feature_cxx0x.cpp?rev=150524&r1=150523&r2=150524&view=diff</a><br>

==============================================================================<br>
--- cfe/trunk/test/Lexer/has_feature_cxx0x.cpp (original)<br>
+++ cfe/trunk/test/Lexer/has_feature_cxx0x.cpp Tue Feb 14 16:56:17 2012<br>
@@ -217,3 +217,12 @@<br>
<br>
 // CHECK-0X: has_unicode_literals<br>
 // CHECK-NO-0X: no_unicode_literals<br>
+<br>
+#if __has_feature(cxx_constexpr)<br>
+int has_constexpr();<br>
+#else<br>
+int no_constexpr();<br>
+#endif<br>
+<br>
+// CHECK-0X: has_constexpr<br>
+// CHECK-NO-0X: no_constexpr<br>
<br>
<br>
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</blockquote></div>