Index: lib/CodeGen/CGVTables.cpp
===================================================================
--- lib/CodeGen/CGVTables.cpp
+++ lib/CodeGen/CGVTables.cpp
@@ -187,12 +187,12 @@
 
   if (!Thunk.Return.isEmpty()) {
     // Fix up the returned value, if necessary.
-    for (llvm::Function::iterator I = Fn->begin(), E = Fn->end(); I != E; I++) {
-      llvm::Instruction *T = I->getTerminator();
+    for (auto &BBlock : *Fn) {
+      llvm::Instruction *T = BBlock.getTerminator();
       if (isa<llvm::ReturnInst>(T)) {
         RValue RV = RValue::get(T->getOperand(0));
         T->eraseFromParent();
-        Builder.SetInsertPoint(&*I);
+        Builder.SetInsertPoint(&BBlock);
         RV = PerformReturnAdjustment(*this, ResultType, RV, Thunk);
         Builder.CreateRet(RV.getScalarVal());
         break;
@@ -832,10 +832,7 @@
   size_t savedSize = DeferredVTables.size();
 #endif
 
-  typedef std::vector<const CXXRecordDecl *>::const_iterator const_iterator;
-  for (const_iterator i = DeferredVTables.begin(),
-                      e = DeferredVTables.end(); i != e; ++i) {
-    const CXXRecordDecl *RD = *i;
+  for (const auto &RD : DeferredVTables) {
     if (shouldEmitVTableAtEndOfTranslationUnit(*this, RD))
       VTables.GenerateClassData(RD);
   }
Index: lib/CodeGen/ItaniumCXXABI.cpp
===================================================================
--- lib/CodeGen/ItaniumCXXABI.cpp
+++ lib/CodeGen/ItaniumCXXABI.cpp
@@ -1023,25 +1023,25 @@
   CharUnits Offset;
 
   // Now walk all possible inheritance paths.
-  for (CXXBasePaths::paths_iterator I = Paths.begin(), E = Paths.end(); I != E;
-       ++I) {
-    if (I->Access != AS_public) // Ignore non-public inheritance.
+  for (auto &Path : Paths) {
+    if (Path.Access != AS_public)  // Ignore non-public inheritance.
       continue;
 
     ++NumPublicPaths;
 
-    for (CXXBasePath::iterator J = I->begin(), JE = I->end(); J != JE; ++J) {
+    for (auto &PathElement : Path) {
       // If the path contains a virtual base class we can't give any hint.
       // -1: no hint.
-      if (J->Base->isVirtual())
+      if (PathElement.Base->isVirtual())
         return CharUnits::fromQuantity(-1ULL);
 
       if (NumPublicPaths > 1) // Won't use offsets, skip computation.
         continue;
 
       // Accumulate the base class offsets.
-      const ASTRecordLayout &L = Context.getASTRecordLayout(J->Class);
-      Offset += L.getBaseClassOffset(J->Base->getType()->getAsCXXRecordDecl());
+      const ASTRecordLayout &L = Context.getASTRecordLayout(PathElement.Class);
+      Offset += L.getBaseClassOffset(
+          PathElement.Base->getType()->getAsCXXRecordDecl());
     }
   }