document _has_feature(objc_default_synthesize_properties).
// rdar://11676972
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158665 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LanguageExtensions.html b/docs/LanguageExtensions.html
index 92db81f..0b99263 100644
--- a/docs/LanguageExtensions.html
+++ b/docs/LanguageExtensions.html
@@ -1202,6 +1202,16 @@
availability of object subscripting.</p>
<!-- ======================================================================= -->
+<h2 id="objc_default_synthesize_properties">Objective-C Autosynthesis of Properties</h2>
+<!-- ======================================================================= -->
+
+<p> Clang provides support for autosynthesis of declared properties. Using this
+feature, clang provides default synthesis of those properties not declared @dynamic
+and not having user provided backing getter and setter methods.
+<code>__has_feature(objc_default_synthesize_properties)</code> checks for availability
+of this feature in version of clang being used.</p>
+
+<!-- ======================================================================= -->
<h2 id="overloading-in-c">Function Overloading in C</h2>
<!-- ======================================================================= -->