C1X: implement generic selections
As an extension, generic selection support has been added for all
supported languages. The syntax is the same as for C1X.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129554 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LanguageExtensions.html b/docs/LanguageExtensions.html
index b16c38c..70c0ff2 100644
--- a/docs/LanguageExtensions.html
+++ b/docs/LanguageExtensions.html
@@ -52,6 +52,7 @@
<li><a href="#checking_type_traits">Checks for Type Traits</a></li>
<li><a href="#blocks">Blocks</a></li>
<li><a href="#overloading-in-c">Function Overloading in C</a></li>
+<li><a href="#generic-selections">Generic Selections</a></li>
<li><a href="#builtins">Builtin Functions</a>
<ul>
<li><a href="#__builtin_shufflevector">__builtin_shufflevector</a></li>
@@ -604,6 +605,20 @@
<!-- ======================================================================= -->
+<h2 id="generic-selections">Generic Selections</h2>
+<!-- ======================================================================= -->
+
+<p>The C1X generic selection expression is available in all languages
+supported by Clang. The syntax is the same as that given in the C1X draft
+standard.</p>
+
+<p>In C, type compatibility is decided according to the rules given in the
+appropriate standard, but in C++, which lacks the type compatibility rules
+used in C, types are considered compatible only if they are equivalent.</p>
+
+<p>Query for this feature with __has_feature(generic_selections).</p>
+
+<!-- ======================================================================= -->
<h2 id="builtins">Builtin Functions</h2>
<!-- ======================================================================= -->