Index: clang/include/clang/AST/Expr.h
===================================================================
--- clang/include/clang/AST/Expr.h
+++ clang/include/clang/AST/Expr.h
@@ -1870,6 +1870,11 @@
     return child_range(getTrailingObjects<Stmt *>(),
                        getTrailingObjects<Stmt *>() + hasFunctionName());
   }
+
+  const_child_range children() const {
+    return const_child_range(getTrailingObjects<Stmt *>(),
+                             getTrailingObjects<Stmt *>() + hasFunctionName());
+  }
 };
 
 /// ParenExpr - This represents a parethesized expression, e.g. "(1)".  This
Index: clang/include/clang/AST/ExprCXX.h
===================================================================
--- clang/include/clang/AST/ExprCXX.h
+++ clang/include/clang/AST/ExprCXX.h
@@ -587,6 +587,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// The null pointer literal (C++11 [lex.nullptr])
@@ -616,6 +620,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Implicit construction of a std::initializer_list<T> object from an
@@ -658,6 +666,10 @@
   }
 
   child_range children() { return child_range(&SubExpr, &SubExpr + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&SubExpr, &SubExpr + 1);
+  }
 };
 
 /// A C++ \c typeid expression (C++ [expr.typeid]), which gets
@@ -748,6 +760,15 @@
     auto **begin = reinterpret_cast<Stmt **>(&Operand);
     return child_range(begin, begin + 1);
   }
+
+  const_child_range children() const {
+    if (isTypeOperand())
+      return const_child_range(const_child_iterator(), const_child_iterator());
+
+    auto **begin =
+        reinterpret_cast<Stmt **>(&const_cast<CXXTypeidExpr *>(this)->Operand);
+    return const_child_range(begin, begin + 1);
+  }
 };
 
 /// A member reference to an MSPropertyDecl.
@@ -802,6 +823,11 @@
     return child_range((Stmt**)&BaseExpr, (Stmt**)&BaseExpr + 1);
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<MSPropertyRefExpr *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == MSPropertyRefExprClass;
   }
@@ -877,6 +903,10 @@
   child_range children() {
     return child_range(&SubExprs[0], &SubExprs[0] + NUM_SUBEXPRS);
   }
+
+  const_child_range children() const {
+    return const_child_range(&SubExprs[0], &SubExprs[0] + NUM_SUBEXPRS);
+  }
 };
 
 /// A Microsoft C++ @c __uuidof expression, which gets
@@ -958,6 +988,14 @@
     auto **begin = reinterpret_cast<Stmt **>(&Operand);
     return child_range(begin, begin + 1);
   }
+
+  const_child_range children() const {
+    if (isTypeOperand())
+      return const_child_range(const_child_iterator(), const_child_iterator());
+    auto **begin =
+        reinterpret_cast<Stmt **>(&const_cast<CXXUuidofExpr *>(this)->Operand);
+    return const_child_range(begin, begin + 1);
+  }
 };
 
 /// Represents the \c this expression in C++.
@@ -1004,6 +1042,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// A C++ throw-expression (C++ [except.throw]).
@@ -1062,6 +1104,10 @@
   child_range children() {
     return child_range(&Operand, Operand ? &Operand + 1 : &Operand);
   }
+
+  const_child_range children() const {
+    return const_child_range(&Operand, Operand ? &Operand + 1 : &Operand);
+  }
 };
 
 /// A default argument (C++ [dcl.fct.default]).
@@ -1123,6 +1169,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// A use of a default initializer in a constructor or in aggregate
@@ -1178,6 +1228,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Represents a C++ temporary.
@@ -1255,6 +1309,10 @@
 
   // Iterators
   child_range children() { return child_range(&SubExpr, &SubExpr + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&SubExpr, &SubExpr + 1);
+  }
 };
 
 /// Represents a call to a C++ constructor.
@@ -1438,6 +1496,11 @@
   child_range children() {
     return child_range(getTrailingArgs(), getTrailingArgs() + getNumArgs());
   }
+
+  const_child_range children() const {
+    auto Children = const_cast<CXXConstructExpr *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
 };
 
 /// Represents a call to an inherited base class constructor from an
@@ -1506,6 +1569,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Represents an explicit C++ type conversion that uses "functional"
@@ -1863,6 +1930,11 @@
     // Includes initialization exprs plus body stmt
     return child_range(getStoredStmts(), getStoredStmts() + NumCaptures + 1);
   }
+
+  const_child_range children() const {
+    return const_child_range(getStoredStmts(),
+                             getStoredStmts() + NumCaptures + 1);
+  }
 };
 
 /// An expression "T()" which creates a value-initialized rvalue of type
@@ -1906,6 +1978,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Represents a new-expression for memory allocation and constructor
@@ -2162,6 +2238,10 @@
 
   // Iterators
   child_range children() { return child_range(raw_arg_begin(), raw_arg_end()); }
+
+  const_child_range children() const {
+    return const_child_range(const_cast<CXXNewExpr *>(this)->children());
+  }
 };
 
 /// Represents a \c delete expression for memory deallocation and
@@ -2228,6 +2308,10 @@
 
   // Iterators
   child_range children() { return child_range(&Argument, &Argument + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&Argument, &Argument + 1);
+  }
 };
 
 /// Stores the type being destroyed by a pseudo-destructor expression.
@@ -2416,6 +2500,10 @@
 
   // Iterators
   child_range children() { return child_range(&Base, &Base + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&Base, &Base + 1);
+  }
 };
 
 /// A type trait used in the implementation of various C++11 and
@@ -2500,6 +2588,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// An Embarcadero array type trait, as used in the implementation of
@@ -2567,6 +2659,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// An expression trait intrinsic.
@@ -2627,6 +2723,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// A reference to an overloaded function set, either an
@@ -2919,6 +3019,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == UnresolvedLookupExprClass;
   }
@@ -3073,6 +3177,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Represents an expression -- generally a full-expression -- that
@@ -3142,6 +3250,10 @@
 
   // Iterators
   child_range children() { return child_range(&SubExpr, &SubExpr + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&SubExpr, &SubExpr + 1);
+  }
 };
 
 /// Describes an explicit type conversion that uses functional
@@ -3271,6 +3383,12 @@
     auto **begin = reinterpret_cast<Stmt **>(arg_begin());
     return child_range(begin, begin + arg_size());
   }
+
+  const_child_range children() const {
+    auto **begin = reinterpret_cast<Stmt **>(
+        const_cast<CXXUnresolvedConstructExpr *>(this)->arg_begin());
+    return const_child_range(begin, begin + arg_size());
+  }
 };
 
 /// Represents a C++ member access expression where the actual
@@ -3517,6 +3635,12 @@
       return child_range(child_iterator(), child_iterator());
     return child_range(&Base, &Base + 1);
   }
+
+  const_child_range children() const {
+    if (isImplicitAccess())
+      return const_child_range(const_child_iterator(), const_child_iterator());
+    return const_child_range(&Base, &Base + 1);
+  }
 };
 
 /// Represents a C++ member access expression for which lookup
@@ -3680,6 +3804,12 @@
       return child_range(child_iterator(), child_iterator());
     return child_range(&Base, &Base + 1);
   }
+
+  const_child_range children() const {
+    if (isImplicitAccess())
+      return const_child_range(const_child_iterator(), const_child_iterator());
+    return const_child_range(&Base, &Base + 1);
+  }
 };
 
 DeclAccessPair *OverloadExpr::getTrailingResults() {
@@ -3749,6 +3879,10 @@
 
   // Iterators
   child_range children() { return child_range(&Operand, &Operand + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&Operand, &Operand + 1);
+  }
 };
 
 /// Represents a C++11 pack expansion that produces a sequence of
@@ -3829,6 +3963,10 @@
   child_range children() {
     return child_range(&Pattern, &Pattern + 1);
   }
+
+  const_child_range children() const {
+    return const_child_range(&Pattern, &Pattern + 1);
+  }
 };
 
 /// Represents an expression that computes the length of a parameter
@@ -3950,6 +4088,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Represents a reference to a non-type template parameter
@@ -3996,6 +4138,10 @@
 
   // Iterators
   child_range children() { return child_range(&Replacement, &Replacement + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&Replacement, &Replacement + 1);
+  }
 };
 
 /// Represents a reference to a non-type template parameter pack that
@@ -4058,6 +4204,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Represents a reference to a function parameter pack that has been
@@ -4130,6 +4280,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// Represents a prvalue temporary that is written into memory so that
@@ -4252,6 +4406,15 @@
     auto ES = State.get<ExtraState *>();
     return child_range(&ES->Temporary, &ES->Temporary + 1);
   }
+
+  const_child_range children() const {
+    if (State.is<Stmt *>())
+      return const_child_range(State.getAddrOfPtr1(),
+                               State.getAddrOfPtr1() + 1);
+
+    auto ES = State.get<ExtraState *>();
+    return const_child_range(&ES->Temporary, &ES->Temporary + 1);
+  }
 };
 
 /// Represents a folding of a pack over an operator.
@@ -4317,6 +4480,10 @@
 
   // Iterators
   child_range children() { return child_range(SubExprs, SubExprs + 2); }
+
+  const_child_range children() const {
+    return const_child_range(SubExprs, SubExprs + 2);
+  }
 };
 
 /// Represents an expression that might suspend coroutine execution;
@@ -4408,6 +4575,10 @@
     return child_range(SubExprs, SubExprs + SubExpr::Count);
   }
 
+  const_child_range children() const {
+    return const_child_range(SubExprs, SubExprs + SubExpr::Count);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == CoawaitExprClass ||
            T->getStmtClass() == CoyieldExprClass;
@@ -4492,6 +4663,10 @@
 
   child_range children() { return child_range(SubExprs, SubExprs + 2); }
 
+  const_child_range children() const {
+    return const_child_range(SubExprs, SubExprs + 2);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == DependentCoawaitExprClass;
   }
Index: clang/include/clang/AST/ExprObjC.h
===================================================================
--- clang/include/clang/AST/ExprObjC.h
+++ clang/include/clang/AST/ExprObjC.h
@@ -72,6 +72,10 @@
   // Iterators
   child_range children() { return child_range(&String, &String+1); }
 
+  const_child_range children() const {
+    return const_child_range(&String, &String + 1);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCStringLiteralClass;
   }
@@ -104,6 +108,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCBoolLiteralExprClass;
   }
@@ -156,6 +164,10 @@
   // Iterators
   child_range children() { return child_range(&SubExpr, &SubExpr+1); }
 
+  const_child_range children() const {
+    return const_child_range(&SubExpr, &SubExpr + 1);
+  }
+
   using const_arg_iterator = ConstExprIterator;
 
   const_arg_iterator arg_begin() const {
@@ -234,6 +246,11 @@
                        reinterpret_cast<Stmt **>(getElements()) + NumElements);
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<ObjCArrayLiteral *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const Stmt *T) {
       return T->getStmtClass() == ObjCArrayLiteralClass;
   }
@@ -374,6 +391,11 @@
             NumElements * 2);
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<ObjCDictionaryLiteral *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCDictionaryLiteralClass;
   }
@@ -419,6 +441,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCEncodeExprClass;
   }
@@ -457,6 +483,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCSelectorExprClass;
   }
@@ -503,6 +533,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCProtocolExprClass;
   }
@@ -566,6 +600,10 @@
   // Iterators
   child_range children() { return child_range(&Base, &Base+1); }
 
+  const_child_range children() const {
+    return const_child_range(&Base, &Base + 1);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCIvarRefExprClass;
   }
@@ -757,6 +795,11 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<ObjCPropertyRefExpr *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCPropertyRefExprClass;
   }
@@ -866,6 +909,10 @@
     return child_range(SubExprs, SubExprs+END_EXPR);
   }
 
+  const_child_range children() const {
+    return const_child_range(SubExprs, SubExprs + END_EXPR);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCSubscriptRefExprClass;
   }
@@ -1408,6 +1455,8 @@
   // Iterators
   child_range children();
 
+  const_child_range children() const;
+
   using arg_iterator = ExprIterator;
   using const_arg_iterator = ConstExprIterator;
 
@@ -1494,6 +1543,10 @@
   // Iterators
   child_range children() { return child_range(&Base, &Base+1); }
 
+  const_child_range children() const {
+    return const_child_range(&Base, &Base + 1);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCIsaExprClass;
   }
@@ -1555,6 +1608,10 @@
 
   child_range children() { return child_range(&Operand, &Operand+1); }
 
+  const_child_range children() const {
+    return const_child_range(&Operand, &Operand + 1);
+  }
+
   // Source locations are determined by the subexpression.
   SourceLocation getBeginLoc() const LLVM_READONLY {
     return Operand->getBeginLoc();
@@ -1667,6 +1724,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == ObjCAvailabilityCheckExprClass;
   }
Index: clang/include/clang/AST/ExprOpenMP.h
===================================================================
--- clang/include/clang/AST/ExprOpenMP.h
+++ clang/include/clang/AST/ExprOpenMP.h
@@ -122,6 +122,10 @@
   child_range children() {
     return child_range(&SubExprs[BASE], &SubExprs[END_EXPR]);
   }
+
+  const_child_range children() const {
+    return const_child_range(&SubExprs[BASE], &SubExprs[END_EXPR]);
+  }
 };
 } // end namespace clang
 
Index: clang/include/clang/AST/OpenMPClause.h
===================================================================
--- clang/include/clang/AST/OpenMPClause.h
+++ clang/include/clang/AST/OpenMPClause.h
@@ -290,6 +290,10 @@
 
   child_range children() { return child_range(&Allocator, &Allocator + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Allocator, &Allocator + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_allocator;
   }
@@ -375,6 +379,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPAllocateClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_allocate;
   }
@@ -465,6 +474,10 @@
 
   child_range children() { return child_range(&Condition, &Condition + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Condition, &Condition + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_if;
   }
@@ -516,6 +529,10 @@
 
   child_range children() { return child_range(&Condition, &Condition + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Condition, &Condition + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_final;
   }
@@ -577,6 +594,10 @@
 
   child_range children() { return child_range(&NumThreads, &NumThreads + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&NumThreads, &NumThreads + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_num_threads;
   }
@@ -632,6 +653,10 @@
 
   child_range children() { return child_range(&Safelen, &Safelen + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Safelen, &Safelen + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_safelen;
   }
@@ -686,6 +711,10 @@
 
   child_range children() { return child_range(&Simdlen, &Simdlen + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Simdlen, &Simdlen + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_simdlen;
   }
@@ -741,6 +770,10 @@
 
   child_range children() { return child_range(&NumForLoops, &NumForLoops + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&NumForLoops, &NumForLoops + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_collapse;
   }
@@ -809,6 +842,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_default;
   }
@@ -879,6 +916,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_proc_bind;
   }
@@ -910,6 +951,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_unified_address;
   }
@@ -941,6 +986,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_unified_shared_memory;
   }
@@ -972,6 +1021,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_reverse_offload;
   }
@@ -1004,6 +1057,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_dynamic_allocators;
   }
@@ -1083,6 +1140,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_atomic_default_mem_order;
   }
@@ -1264,6 +1325,11 @@
                        reinterpret_cast<Stmt **>(&ChunkSize) + 1);
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPScheduleClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_schedule;
   }
@@ -1349,6 +1415,10 @@
 
   child_range children() { return child_range(&NumForLoops, &NumForLoops + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&NumForLoops, &NumForLoops + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_ordered;
   }
@@ -1377,6 +1447,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_nowait;
   }
@@ -1405,6 +1479,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_untied;
   }
@@ -1434,6 +1512,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_mergeable;
   }
@@ -1461,6 +1543,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_read;
   }
@@ -1489,6 +1575,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_write;
   }
@@ -1518,6 +1608,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_update;
   }
@@ -1547,6 +1641,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_capture;
   }
@@ -1576,6 +1674,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_seq_cst;
   }
@@ -1669,6 +1771,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPPrivateClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_private;
   }
@@ -1796,6 +1903,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPFirstprivateClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_firstprivate;
   }
@@ -1995,6 +2107,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPLastprivateClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_lastprivate;
   }
@@ -2055,6 +2172,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPSharedClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_shared;
   }
@@ -2277,6 +2399,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPReductionClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_reduction;
   }
@@ -2497,6 +2624,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPTaskReductionClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_task_reduction;
   }
@@ -2740,6 +2872,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPInReductionClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_in_reduction;
   }
@@ -2979,6 +3116,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPLinearClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_linear;
   }
@@ -3066,6 +3208,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPAlignedClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_aligned;
   }
@@ -3230,6 +3377,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPCopyinClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_copyin;
   }
@@ -3381,6 +3533,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPCopyprivateClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_copyprivate;
   }
@@ -3446,6 +3603,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPFlushClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_flush;
   }
@@ -3565,6 +3727,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPDependClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_depend;
   }
@@ -3628,6 +3795,10 @@
 
   child_range children() { return child_range(&Device, &Device + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Device, &Device + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_device;
   }
@@ -3656,6 +3827,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_threads;
   }
@@ -3683,6 +3858,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_simd;
   }
@@ -4515,6 +4694,11 @@
         reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPMapClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_map;
   }
@@ -4579,6 +4763,10 @@
 
   child_range children() { return child_range(&NumTeams, &NumTeams + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&NumTeams, &NumTeams + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_num_teams;
   }
@@ -4644,6 +4832,10 @@
 
   child_range children() { return child_range(&ThreadLimit, &ThreadLimit + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&ThreadLimit, &ThreadLimit + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_thread_limit;
   }
@@ -4701,6 +4893,10 @@
 
   child_range children() { return child_range(&Priority, &Priority + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Priority, &Priority + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_priority;
   }
@@ -4752,6 +4948,10 @@
 
   child_range children() { return child_range(&Grainsize, &Grainsize + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Grainsize, &Grainsize + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_grainsize;
   }
@@ -4780,6 +4980,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_nogroup;
   }
@@ -4831,6 +5035,10 @@
 
   child_range children() { return child_range(&NumTasks, &NumTasks + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&NumTasks, &NumTasks + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_num_tasks;
   }
@@ -4881,6 +5089,10 @@
 
   child_range children() { return child_range(&Hint, &Hint + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&Hint, &Hint + 1);
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_hint;
   }
@@ -4988,6 +5200,11 @@
                        reinterpret_cast<Stmt **>(&ChunkSize) + 1);
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPDistScheduleClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_dist_schedule;
   }
@@ -5089,6 +5306,10 @@
     return child_range(child_iterator(), child_iterator());
   }
 
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_defaultmap;
   }
@@ -5194,6 +5415,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPToClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_to;
   }
@@ -5300,6 +5526,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPFromClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_from;
   }
@@ -5451,6 +5682,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPUseDevicePtrClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_use_device_ptr;
   }
@@ -5542,6 +5778,11 @@
                        reinterpret_cast<Stmt **>(varlist_end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<OMPIsDevicePtrClause *>(this)->children();
+    return const_child_range(Children.begin(), Children.end());
+  }
+
   static bool classof(const OMPClause *T) {
     return T->getClauseKind() == OMPC_is_device_ptr;
   }
Index: clang/include/clang/AST/Stmt.h
===================================================================
--- clang/include/clang/AST/Stmt.h
+++ clang/include/clang/AST/Stmt.h
@@ -1188,6 +1188,11 @@
                        child_iterator(DG.end(), DG.end()));
   }
 
+  const_child_range children() const {
+    auto Children = const_cast<DeclStmt *>(this)->children();
+    return const_child_range(Children);
+  }
+
   using decl_iterator = DeclGroupRef::iterator;
   using const_decl_iterator = DeclGroupRef::const_iterator;
   using decl_range = llvm::iterator_range<decl_iterator>;
@@ -1245,6 +1250,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// CompoundStmt - This represents a group of statements like { stmt stmt }.
@@ -1549,6 +1558,12 @@
                        getTrailingObjects<Stmt *>() +
                            numTrailingObjects(OverloadToken<Stmt *>()));
   }
+
+  const_child_range children() const {
+    return const_child_range(getTrailingObjects<Stmt *>(),
+                             getTrailingObjects<Stmt *>() +
+                                 numTrailingObjects(OverloadToken<Stmt *>()));
+  }
 };
 
 class DefaultStmt : public SwitchCase {
@@ -1580,6 +1595,10 @@
 
   // Iterators
   child_range children() { return child_range(&SubStmt, &SubStmt + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&SubStmt, &SubStmt + 1);
+  }
 };
 
 SourceLocation SwitchCase::getEndLoc() const {
@@ -1654,6 +1673,10 @@
 
   child_range children() { return child_range(&SubStmt, &SubStmt + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&SubStmt, &SubStmt + 1);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == LabelStmtClass;
   }
@@ -1711,6 +1734,10 @@
 
   child_range children() { return child_range(&SubStmt, &SubStmt + 1); }
 
+  const_child_range children() const {
+    return const_child_range(&SubStmt, &SubStmt + 1);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == AttributedStmtClass;
   }
@@ -1910,6 +1937,12 @@
                            numTrailingObjects(OverloadToken<Stmt *>()));
   }
 
+  const_child_range children() const {
+    return const_child_range(getTrailingObjects<Stmt *>(),
+                             getTrailingObjects<Stmt *>() +
+                                 numTrailingObjects(OverloadToken<Stmt *>()));
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == IfStmtClass;
   }
@@ -2087,6 +2120,12 @@
                            numTrailingObjects(OverloadToken<Stmt *>()));
   }
 
+  const_child_range children() const {
+    return const_child_range(getTrailingObjects<Stmt *>(),
+                             getTrailingObjects<Stmt *>() +
+                                 numTrailingObjects(OverloadToken<Stmt *>()));
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == SwitchStmtClass;
   }
@@ -2212,6 +2251,12 @@
                        getTrailingObjects<Stmt *>() +
                            numTrailingObjects(OverloadToken<Stmt *>()));
   }
+
+  const_child_range children() const {
+    return const_child_range(getTrailingObjects<Stmt *>(),
+                             getTrailingObjects<Stmt *>() +
+                                 numTrailingObjects(OverloadToken<Stmt *>()));
+  }
 };
 
 /// DoStmt - This represents a 'do/while' stmt.
@@ -2262,6 +2307,10 @@
   child_range children() {
     return child_range(&SubExprs[0], &SubExprs[0] + END_EXPR);
   }
+
+  const_child_range children() const {
+    return const_child_range(&SubExprs[0], &SubExprs[0] + END_EXPR);
+  }
 };
 
 /// ForStmt - This represents a 'for (init;cond;inc)' stmt.  Note that any of
@@ -2331,6 +2380,10 @@
   child_range children() {
     return child_range(&SubExprs[0], &SubExprs[0]+END_EXPR);
   }
+
+  const_child_range children() const {
+    return const_child_range(&SubExprs[0], &SubExprs[0] + END_EXPR);
+  }
 };
 
 /// GotoStmt - This represents a direct goto.
@@ -2366,6 +2419,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// IndirectGotoStmt - This represents an indirect goto.
@@ -2411,6 +2468,10 @@
 
   // Iterators
   child_range children() { return child_range(&Target, &Target + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&Target, &Target + 1);
+  }
 };
 
 /// ContinueStmt - This represents a continue.
@@ -2437,6 +2498,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// BreakStmt - This represents a break.
@@ -2463,6 +2528,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// ReturnStmt - This represents a return, optionally of an expression:
@@ -2547,6 +2616,12 @@
       return child_range(&RetExpr, &RetExpr + 1);
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    if (RetExpr)
+      return const_child_range(&RetExpr, &RetExpr + 1);
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// AsmStmt is the base class for GCCAsmStmt and MSAsmStmt.
@@ -2702,6 +2777,10 @@
   child_range children() {
     return child_range(&Exprs[0], &Exprs[0] + NumOutputs + NumInputs);
   }
+
+  const_child_range children() const {
+    return const_child_range(&Exprs[0], &Exprs[0] + NumOutputs + NumInputs);
+  }
 };
 
 /// This represents a GCC inline-assembly statement extension.
@@ -2978,6 +3057,10 @@
   child_range children() {
     return child_range(&Exprs[0], &Exprs[NumInputs + NumOutputs]);
   }
+
+  const_child_range children() const {
+    return const_child_range(&Exprs[0], &Exprs[NumInputs + NumOutputs]);
+  }
 };
 
 class SEHExceptStmt : public Stmt {
@@ -3015,6 +3098,10 @@
     return child_range(Children, Children+2);
   }
 
+  const_child_range children() const {
+    return const_child_range(Children, Children + 2);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == SEHExceptStmtClass;
   }
@@ -3046,6 +3133,10 @@
     return child_range(&Block,&Block+1);
   }
 
+  const_child_range children() const {
+    return const_child_range(&Block, &Block + 1);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == SEHFinallyStmtClass;
   }
@@ -3094,6 +3185,10 @@
     return child_range(Children, Children+2);
   }
 
+  const_child_range children() const {
+    return const_child_range(Children, Children + 2);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == SEHTryStmtClass;
   }
@@ -3124,6 +3219,10 @@
   child_range children() {
     return child_range(child_iterator(), child_iterator());
   }
+
+  const_child_range children() const {
+    return const_child_range(const_child_iterator(), const_child_iterator());
+  }
 };
 
 /// This captures a statement into a function. For example, the following
@@ -3344,6 +3443,8 @@
   }
 
   child_range children();
+
+  const_child_range children() const;
 };
 
 } // namespace clang
Index: clang/include/clang/AST/StmtCXX.h
===================================================================
--- clang/include/clang/AST/StmtCXX.h
+++ clang/include/clang/AST/StmtCXX.h
@@ -56,6 +56,10 @@
 
   child_range children() { return child_range(&HandlerBlock, &HandlerBlock+1); }
 
+  const_child_range children() const {
+    return const_child_range(&HandlerBlock, &HandlerBlock + 1);
+  }
+
   friend class ASTStmtReader;
 };
 
@@ -114,6 +118,10 @@
   child_range children() {
     return child_range(getStmts(), getStmts() + getNumHandlers() + 1);
   }
+
+  const_child_range children() const {
+    return const_child_range(getStmts(), getStmts() + getNumHandlers() + 1);
+  }
 };
 
 /// CXXForRangeStmt - This represents C++0x [stmt.ranged]'s ranged for
@@ -208,6 +216,10 @@
   child_range children() {
     return child_range(&SubExprs[0], &SubExprs[END]);
   }
+
+  const_child_range children() const {
+    return const_child_range(&SubExprs[0], &SubExprs[END]);
+  }
 };
 
 /// Representation of a Microsoft __if_exists or __if_not_exists
@@ -290,6 +302,10 @@
     return child_range(&SubStmt, &SubStmt+1);
   }
 
+  const_child_range children() const {
+    return const_child_range(&SubStmt, &SubStmt + 1);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == MSDependentExistsStmtClass;
   }
@@ -415,6 +431,12 @@
                        getStoredStmts() + SubStmt::FirstParamMove + NumParams);
   }
 
+  const_child_range children() const {
+    return const_child_range(getStoredStmts(), getStoredStmts() +
+                                                   SubStmt::FirstParamMove +
+                                                   NumParams);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == CoroutineBodyStmtClass;
   }
@@ -479,6 +501,13 @@
     return child_range(SubStmts, SubStmts + SubStmt::Count);
   }
 
+  const_child_range children() const {
+    if (!getOperand())
+      return const_child_range(SubStmts + SubStmt::PromiseCall,
+                               SubStmts + SubStmt::Count);
+    return const_child_range(SubStmts, SubStmts + SubStmt::Count);
+  }
+
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == CoreturnStmtClass;
   }
Index: clang/include/clang/AST/StmtObjC.h
===================================================================
--- clang/include/clang/AST/StmtObjC.h
+++ clang/include/clang/AST/StmtObjC.h
@@ -67,6 +67,10 @@
   child_range children() {
     return child_range(&SubExprs[0], &SubExprs[END_EXPR]);
   }
+
+  const_child_range children() const {
+    return const_child_range(&SubExprs[0], &SubExprs[END_EXPR]);
+  }
 };
 
 /// Represents Objective-C's \@catch statement.
@@ -113,6 +117,10 @@
   }
 
   child_range children() { return child_range(&Body, &Body + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&Body, &Body + 1);
+  }
 };
 
 /// Represents Objective-C's \@finally statement
@@ -147,6 +155,10 @@
   child_range children() {
     return child_range(&AtFinallyStmt, &AtFinallyStmt+1);
   }
+
+  const_child_range children() const {
+    return const_child_range(&AtFinallyStmt, &AtFinallyStmt + 1);
+  }
 };
 
 /// Represents Objective-C's \@try ... \@catch ... \@finally statement.
@@ -248,6 +260,10 @@
     return child_range(getStmts(),
                        getStmts() + 1 + NumCatchStmts + HasFinally);
   }
+
+  const_child_range children() const {
+    return const_child_range(const_cast<ObjCAtTryStmt *>(this)->children());
+  }
 };
 
 /// Represents Objective-C's \@synchronized statement.
@@ -306,6 +322,10 @@
   child_range children() {
     return child_range(&SubStmts[0], &SubStmts[0]+END_EXPR);
   }
+
+  const_child_range children() const {
+    return const_child_range(&SubStmts[0], &SubStmts[0] + END_EXPR);
+  }
 };
 
 /// Represents Objective-C's \@throw statement.
@@ -338,6 +358,10 @@
   }
 
   child_range children() { return child_range(&Throw, &Throw+1); }
+
+  const_child_range children() const {
+    return const_child_range(&Throw, &Throw + 1);
+  }
 };
 
 /// Represents Objective-C's \@autoreleasepool Statement
@@ -369,6 +393,10 @@
   }
 
   child_range children() { return child_range(&SubStmt, &SubStmt + 1); }
+
+  const_child_range children() const {
+    return const_child_range(&SubStmt, &SubStmt + 1);
+  }
 };
 
 }  // end namespace clang
Index: clang/include/clang/AST/StmtOpenMP.h
===================================================================
--- clang/include/clang/AST/StmtOpenMP.h
+++ clang/include/clang/AST/StmtOpenMP.h
@@ -256,6 +256,14 @@
     return child_range(ChildStorage, ChildStorage + 1);
   }
 
+  const_child_range children() const {
+    if (!hasAssociatedStmt())
+      return const_child_range(const_child_iterator(), const_child_iterator());
+    Stmt **ChildStorage = reinterpret_cast<Stmt **>(
+        const_cast<OMPExecutableDirective *>(this)->getClauses().end());
+    return const_child_range(ChildStorage, ChildStorage + 1);
+  }
+
   ArrayRef<OMPClause *> clauses() { return getClauses(); }
 
   ArrayRef<OMPClause *> clauses() const {
Index: clang/lib/AST/ExprObjC.cpp
===================================================================
--- clang/lib/AST/ExprObjC.cpp
+++ clang/lib/AST/ExprObjC.cpp
@@ -377,6 +377,11 @@
                      reinterpret_cast<Stmt **>(getArgs() + getNumArgs()));
 }
 
+Stmt::const_child_range ObjCMessageExpr::children() const {
+  auto Children = const_cast<ObjCMessageExpr *>(this)->children();
+  return const_child_range(Children.begin(), Children.end());
+}
+
 StringRef ObjCBridgedCastExpr::getBridgeKindName() const {
   switch (getBridgeKind()) {
   case OBC_Bridge:
Index: clang/lib/AST/Stmt.cpp
===================================================================
--- clang/lib/AST/Stmt.cpp
+++ clang/lib/AST/Stmt.cpp
@@ -1254,6 +1254,10 @@
   return child_range(getStoredStmts(), getStoredStmts() + NumCaptures);
 }
 
+Stmt::const_child_range CapturedStmt::children() const {
+  return const_child_range(getStoredStmts(), getStoredStmts() + NumCaptures);
+}
+
 CapturedDecl *CapturedStmt::getCapturedDecl() {
   return CapDeclAndKind.getPointer();
 }