Index: clang/docs/LibASTMatchersReference.html
===================================================================
--- clang/docs/LibASTMatchersReference.html
+++ clang/docs/LibASTMatchersReference.html
@@ -1267,6 +1267,20 @@
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>&gt;</td><td class="name" onclick="toggle('objcIvarRefExpr0')"><a name="objcIvarRefExpr0Anchor">objcIvarRefExpr</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1ObjCIvarRefExpr.html">ObjCIvarRefExpr</a>&gt;...</td></tr>
+<tr><td colspan="4" class="doc" id="objcIvarRefExpr0"><pre>Matches a reference to an ObjCIvar.
+
+Example: matches "a" in "init" method:
+@implementation A {
+  NSString *a;
+}
+- (void) init {
+  a = @"hello";
+}
+}
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>&gt;</td><td class="name" onclick="toggle('objcMessageExpr0')"><a name="objcMessageExpr0Anchor">objcMessageExpr</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1ObjCMessageExpr.html">ObjCMessageExpr</a>&gt;...</td></tr>
 <tr><td colspan="4" class="doc" id="objcMessageExpr0"><pre>Matches ObjectiveC Message invocation expressions.
 
@@ -1577,6 +1591,18 @@
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Type.html">Type</a>&gt;</td><td class="name" onclick="toggle('decltypeType0')"><a name="decltypeType0Anchor">decltypeType</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1DecltypeType.html">DecltypeType</a>&gt;...</td></tr>
+<tr><td colspan="4" class="doc" id="decltypeType0"><pre>Matches types nodes representing C++11 decltype(&lt;expr&gt;) types.
+
+Given:
+  short i = 1;
+  int j = 42;
+  decltype(i + j) result = i + j;
+decltypeType() 
+  matches "decltype(i + j)"
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Type.html">Type</a>&gt;</td><td class="name" onclick="toggle('dependentSizedArrayType0')"><a name="dependentSizedArrayType0Anchor">dependentSizedArrayType</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1DependentSizedArrayType.html">DependentSizedArrayType</a>&gt;...</td></tr>
 <tr><td colspan="4" class="doc" id="dependentSizedArrayType0"><pre>Matches C++ arrays whose size is a value-dependent expression.
 
@@ -4239,6 +4265,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -4535,6 +4562,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -4738,6 +4766,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -4888,6 +4917,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -5049,6 +5079,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -5156,6 +5187,19 @@
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1DecltypeType.html">DecltypeType</a>&gt;</td><td class="name" onclick="toggle('hasUnderlyingType0')"><a name="hasUnderlyingType0Anchor">hasUnderlyingType</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Type.html">Type</a>&gt;</td></tr>
+<tr><td colspan="4" class="doc" id="hasUnderlyingType0"><pre>Matches DecltypeType nodes to find out the underlying type.
+
+Given
+  decltype(1) a = 1;
+  decltype(2.0) b = 2.0;
+decltypeType(hasUnderlyingType(isInteger()))
+  matches "auto a"
+
+Usable as: Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1DecltypeType.html">DecltypeType</a>&gt;
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1DoStmt.html">DoStmt</a>&gt;</td><td class="name" onclick="toggle('hasBody0')"><a name="hasBody0Anchor">hasBody</a></td><td>Matcher&lt;<a href="http://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>&gt; InnerMatcher</td></tr>
 <tr><td colspan="4" class="doc" id="hasBody0"><pre>Matches a 'for', 'while', 'do while' statement or a function
 definition that has a given body.
@@ -5222,6 +5266,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -5642,6 +5687,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -5675,6 +5721,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -5708,6 +5755,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -6068,6 +6116,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -6149,6 +6198,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -6301,6 +6351,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -6423,6 +6474,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -6476,6 +6528,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -6540,6 +6593,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
@@ -6604,6 +6658,7 @@
 - for MemberExpr, the declaration of the referenced member
 - for CXXConstructExpr, the declaration of the constructor
 - for CXXNewExpr, the declaration of the operator new
+- for ObjCIvarExpr, the declaration of the ivar
 
 For type nodes, hasDeclaration will generally match the declaration of the
 sugared type. Given
Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -1644,6 +1644,21 @@
 extern const internal::VariadicDynCastAllOfMatcher<Stmt, DeclRefExpr>
     declRefExpr;
 
+/// Matches a reference to an ObjCIvar.
+///
+/// Example: matches "a" in "init" method:
+/// \code
+/// @implementation A {
+///   NSString *a;
+/// }
+/// - (void) init {
+///   a = @"hello";
+/// }
+//}
+/// \endcode
+extern const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCIvarRefExpr>
+    objcIvarRefExpr;
+
 /// Matches if statements.
 ///
 /// Example matches 'if (x) {}'
@@ -2655,6 +2670,7 @@
 /// - for MemberExpr, the declaration of the referenced member
 /// - for CXXConstructExpr, the declaration of the constructor
 /// - for CXXNewExpr, the declaration of the operator new
+/// - for ObjCIvarExpr, the declaration of the ivar
 ///
 /// For type nodes, hasDeclaration will generally match the declaration of the
 /// sugared type. Given
Index: clang/include/clang/ASTMatchers/ASTMatchersInternal.h
===================================================================
--- clang/include/clang/ASTMatchers/ASTMatchersInternal.h
+++ clang/include/clang/ASTMatchers/ASTMatchersInternal.h
@@ -42,6 +42,7 @@
 #include "clang/AST/DeclTemplate.h"
 #include "clang/AST/Expr.h"
 #include "clang/AST/ExprCXX.h"
+#include "clang/AST/ExprObjC.h"
 #include "clang/AST/NestedNameSpecifier.h"
 #include "clang/AST/Stmt.h"
 #include "clang/AST/TemplateName.h"
@@ -865,6 +866,12 @@
     return matchesDecl(Node.getConstructor(), Finder, Builder);
   }
 
+  bool matchesSpecialized(const ObjCIvarRefExpr &Node,
+                          ASTMatchFinder *Finder,
+                          BoundNodesTreeBuilder *Builder) const {
+    return matchesDecl(Node.getDecl(), Finder, Builder);
+  }
+
   /// Extracts the operator new of the new call and returns whether the
   /// inner matcher matches on it.
   bool matchesSpecialized(const CXXNewExpr &Node,
@@ -1110,7 +1117,7 @@
              ElaboratedType, InjectedClassNameType, LabelStmt, AddrLabelExpr,
              MemberExpr, QualType, RecordType, TagType,
              TemplateSpecializationType, TemplateTypeParmType, TypedefType,
-             UnresolvedUsingType>;
+             UnresolvedUsingType, ObjCIvarRefExpr>;
 
 /// Converts a \c Matcher<T> to a matcher of desired type \c To by
 /// "adapting" a \c To into a \c T.
Index: clang/lib/ASTMatchers/ASTMatchersInternal.cpp
===================================================================
--- clang/lib/ASTMatchers/ASTMatchersInternal.cpp
+++ clang/lib/ASTMatchers/ASTMatchersInternal.cpp
@@ -679,6 +679,7 @@
     cxxOperatorCallExpr;
 const internal::VariadicDynCastAllOfMatcher<Stmt, Expr> expr;
 const internal::VariadicDynCastAllOfMatcher<Stmt, DeclRefExpr> declRefExpr;
+const internal::VariadicDynCastAllOfMatcher<Stmt, ObjCIvarRefExpr> objcIvarRefExpr;
 const internal::VariadicDynCastAllOfMatcher<Stmt, IfStmt> ifStmt;
 const internal::VariadicDynCastAllOfMatcher<Stmt, ForStmt> forStmt;
 const internal::VariadicDynCastAllOfMatcher<Stmt, CXXForRangeStmt>
Index: clang/lib/ASTMatchers/Dynamic/Registry.cpp
===================================================================
--- clang/lib/ASTMatchers/Dynamic/Registry.cpp
+++ clang/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -410,6 +410,7 @@
   REGISTER_MATCHER(objcImplementationDecl);
   REGISTER_MATCHER(objcInterfaceDecl);
   REGISTER_MATCHER(objcIvarDecl);
+  REGISTER_MATCHER(objcIvarRefExpr);
   REGISTER_MATCHER(objcMessageExpr);
   REGISTER_MATCHER(objcMethodDecl);
   REGISTER_MATCHER(objcObjectPointerType);
Index: clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
===================================================================
--- clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
+++ clang/unittests/ASTMatchers/ASTMatchersNarrowingTest.cpp
@@ -1354,6 +1354,16 @@
       ))))));
 }
 
+TEST(ObjCIvarRefExprMatcher, IvarExpr) {
+  std::string ObjCString =
+    "@interface A @end "
+    "@implementation A { A *x; } - (void) func { x = 0; } @end";
+  EXPECT_TRUE(matchesObjC(ObjCString, objcIvarRefExpr()));
+  EXPECT_TRUE(matchesObjC(ObjCString, objcIvarRefExpr(
+        hasDeclaration(namedDecl(hasName("x"))))));
+  EXPECT_FALSE(matchesObjC(ObjCString, objcIvarRefExpr(
+        hasDeclaration(namedDecl(hasName("y"))))));
+}
 
 TEST(StatementCountIs, FindsNoStatementsInAnEmptyCompoundStatement) {
   EXPECT_TRUE(matches("void f() { }",