Index: clang/include/clang/AST/StmtObjC.h
===================================================================
--- clang/include/clang/AST/StmtObjC.h
+++ clang/include/clang/AST/StmtObjC.h
@@ -268,6 +268,27 @@
   const_child_range children() const {
     return const_child_range(const_cast<ObjCAtTryStmt *>(this)->children());
   }
+
+  using catch_stmt_iterator = CastIterator<ObjCAtCatchStmt>;
+  using const_catch_stmt_iterator = ConstCastIterator<ObjCAtCatchStmt>;
+  using catch_range = llvm::iterator_range<catch_stmt_iterator>;
+  using catch_const_range = llvm::iterator_range<const_catch_stmt_iterator>;
+
+  catch_stmt_iterator catch_stmts_begin() { return getStmts() + 1; }
+  catch_stmt_iterator catch_stmts_end() {
+    return getStmts() + 1 + NumCatchStmts;
+  }
+  catch_range catch_stmts() {
+    return catch_range(catch_stmts_begin(), catch_stmts_end());
+  }
+
+  const_catch_stmt_iterator catch_stmts_begin() const { return getStmts() + 1; }
+  const_catch_stmt_iterator catch_stmts_end() const {
+    return getStmts() + 1 + NumCatchStmts;
+  }
+  catch_const_range catch_stmts() const {
+    return catch_const_range(catch_stmts_begin(), catch_stmts_end());
+  }
 };
 
 /// Represents Objective-C's \@synchronized statement.
Index: clang/lib/AST/StmtPrinter.cpp
===================================================================
--- clang/lib/AST/StmtPrinter.cpp
+++ clang/lib/AST/StmtPrinter.cpp
@@ -521,13 +521,10 @@
     OS << NL;
   }
 
-  for (unsigned I = 0, N = Node->getNumCatchStmts(); I != N; ++I) {
-    ObjCAtCatchStmt *catchStmt = Node->getCatchStmt(I);
+  for (ObjCAtCatchStmt *catchStmt : Node->catch_stmts()) {
     Indent() << "@catch(";
-    if (catchStmt->getCatchParamDecl()) {
-      if (Decl *DS = catchStmt->getCatchParamDecl())
-        PrintRawDecl(DS);
-    }
+    if (Decl *DS = catchStmt->getCatchParamDecl())
+      PrintRawDecl(DS);
     OS << ")";
     if (auto *CS = dyn_cast<CompoundStmt>(catchStmt->getCatchBody())) {
       PrintRawCompoundStmt(CS);
Index: clang/lib/Analysis/CFG.cpp
===================================================================
--- clang/lib/Analysis/CFG.cpp
+++ clang/lib/Analysis/CFG.cpp
@@ -3935,10 +3935,9 @@
   NewTryTerminatedBlock->setTerminator(Terminator);
 
   bool HasCatchAll = false;
-  for (unsigned I = 0, E = Terminator->getNumCatchStmts(); I != E; ++I) {
+  for (ObjCAtCatchStmt *CS : Terminator->catch_stmts()) {
     // The code after the try is the implicit successor.
     Succ = TrySuccessor;
-    ObjCAtCatchStmt *CS = Terminator->getCatchStmt(I);
     if (CS->hasEllipsis()) {
       HasCatchAll = true;
     }
Index: clang/lib/CodeGen/CGObjCMac.cpp
===================================================================
--- clang/lib/CodeGen/CGObjCMac.cpp
+++ clang/lib/CodeGen/CGObjCMac.cpp
@@ -4721,9 +4721,7 @@
     // matched and avoid generating code for falling off the end if
     // so.
     bool AllMatched = false;
-    for (unsigned I = 0, N = AtTryStmt->getNumCatchStmts(); I != N; ++I) {
-      const ObjCAtCatchStmt *CatchStmt = AtTryStmt->getCatchStmt(I);
-
+    for (const ObjCAtCatchStmt *CatchStmt : AtTryStmt->catch_stmts()) {
       const VarDecl *CatchParam = CatchStmt->getCatchParamDecl();
       const ObjCObjectPointerType *OPT = nullptr;
 
Index: clang/lib/CodeGen/CGObjCRuntime.cpp
===================================================================
--- clang/lib/CodeGen/CGObjCRuntime.cpp
+++ clang/lib/CodeGen/CGObjCRuntime.cpp
@@ -163,8 +163,7 @@
 
   // Enter the catch, if there is one.
   if (S.getNumCatchStmts()) {
-    for (unsigned I = 0, N = S.getNumCatchStmts(); I != N; ++I) {
-      const ObjCAtCatchStmt *CatchStmt = S.getCatchStmt(I);
+    for (const ObjCAtCatchStmt *CatchStmt : S.catch_stmts()) {
       const VarDecl *CatchDecl = CatchStmt->getCatchParamDecl();
 
       Handlers.push_back(CatchHandler());
Index: clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
===================================================================
--- clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
+++ clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
@@ -1957,15 +1957,15 @@
     // @try -> try
     ReplaceText(startLoc, 1, "");
 
-  for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) {
-    ObjCAtCatchStmt *Catch = S->getCatchStmt(I);
+  for (ObjCAtCatchStmt *Catch : S->catch_stmts()) {
     VarDecl *catchDecl = Catch->getCatchParamDecl();
 
     startLoc = Catch->getBeginLoc();
     bool AtRemoved = false;
     if (catchDecl) {
       QualType t = catchDecl->getType();
-      if (const ObjCObjectPointerType *Ptr = t->getAs<ObjCObjectPointerType>()) {
+      if (const ObjCObjectPointerType *Ptr =
+              t->getAs<ObjCObjectPointerType>()) {
         // Should be a pointer to a class.
         ObjCInterfaceDecl *IDecl = Ptr->getObjectType()->getInterface();
         if (IDecl) {
Index: clang/lib/Sema/JumpDiagnostics.cpp
===================================================================
--- clang/lib/Sema/JumpDiagnostics.cpp
+++ clang/lib/Sema/JumpDiagnostics.cpp
@@ -493,8 +493,7 @@
     }
 
     // Jump from the catch to the finally or try is not valid.
-    for (unsigned I = 0, N = AT->getNumCatchStmts(); I != N; ++I) {
-      ObjCAtCatchStmt *AC = AT->getCatchStmt(I);
+    for (ObjCAtCatchStmt *AC : AT->catch_stmts()) {
       unsigned NewParentScope = Scopes.size();
       Scopes.push_back(GotoScope(ParentScope,
                                  diag::note_protected_by_objc_catch,
Index: clang/lib/Serialization/ASTWriterStmt.cpp
===================================================================
--- clang/lib/Serialization/ASTWriterStmt.cpp
+++ clang/lib/Serialization/ASTWriterStmt.cpp
@@ -1482,8 +1482,8 @@
   Record.push_back(S->getNumCatchStmts());
   Record.push_back(S->getFinallyStmt() != nullptr);
   Record.AddStmt(S->getTryBody());
-  for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
-    Record.AddStmt(S->getCatchStmt(I));
+  for (ObjCAtCatchStmt *C : S->catch_stmts())
+    Record.AddStmt(C);
   if (S->getFinallyStmt())
     Record.AddStmt(S->getFinallyStmt());
   Record.AddSourceLocation(S->getAtTryLoc());