diff --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp
@@ -1511,7 +1511,7 @@ void AArch64InstPrinter::printSVERegOp(const MCInst *MI, unsigned OpNum,
 
 template <typename T>
 void AArch64InstPrinter::printImmSVE(T Value, raw_ostream &O) {
-  typename std::make_unsigned<T>::type HexValue = Value;
+  std::make_unsigned_t<T> HexValue = Value;
 
   if (getPrintImmHex())
     O << '#' << formatHex((uint64_t)HexValue);
@@ -1556,8 +1556,8 @@ template <typename T>
 void AArch64InstPrinter::printSVELogicalImm(const MCInst *MI, unsigned OpNum,
                                             const MCSubtargetInfo &STI,
                                             raw_ostream &O) {
-  typedef typename std::make_signed<T>::type SignedT;
-  typedef typename std::make_unsigned<T>::type UnsignedT;
+  typedef std::make_signed_t<T> SignedT;
+  typedef std::make_unsigned_t<T> UnsignedT;
 
   uint64_t Val = MI->getOperand(OpNum).getImm();
   UnsignedT PrintVal = AArch64_AM::decodeLogicalImmediate(Val, 64);

diff --git a/llvm/lib/XRay/FDRTraceWriter.cpp b/llvm/lib/XRay/FDRTraceWriter.cpp
@@ -20,21 +20,19 @@ namespace {
 template <size_t Index> struct IndexedWriter {
   template <
       class Tuple,
-      typename std::enable_if<
-          (Index <
-           std::tuple_size<typename std::remove_reference<Tuple>::type>::value),
-          int>::type = 0>
+      std::enable_if_t<(Index <
+                        std::tuple_size<std::remove_reference_t<Tuple>>::value),
+                       int> = 0>
   static size_t write(support::endian::Writer &OS, Tuple &&T) {
     OS.write(std::get<Index>(T));
     return sizeof(std::get<Index>(T)) + IndexedWriter<Index + 1>::write(OS, T);
   }
 
   template <
       class Tuple,
-      typename std::enable_if<
-          (Index >=
-           std::tuple_size<typename std::remove_reference<Tuple>::type>::value),
-          int>::type = 0>
+      std::enable_if_t<(Index >=
+                        std::tuple_size<std::remove_reference_t<Tuple>>::value),
+                       int> = 0>
   static size_t write(support::endian::Writer &OS, Tuple &&) {
     return 0;
   }

diff --git a/llvm/tools/dsymutil/CFBundle.cpp b/llvm/tools/dsymutil/CFBundle.cpp
@@ -34,9 +34,8 @@ template <typename T> struct CFDeleter {
 /// any valid pointer it owns unless that pointer is explicitly released using
 /// the release() member function.
 template <typename T>
-using CFReleaser =
-    std::unique_ptr<typename std::remove_pointer<T>::type,
-                    CFDeleter<typename std::remove_pointer<T>::type>>;
+using CFReleaser = std::unique_ptr<std::remove_pointer_t<T>,
+                                   CFDeleter<std::remove_pointer_t<T>>>;
 
 /// RAII wrapper around CFBundleRef.
 class CFString : public CFReleaser<CFStringRef> {

diff --git a/llvm/tools/llvm-pdbutil/FormatUtil.h b/llvm/tools/llvm-pdbutil/FormatUtil.h
@@ -42,8 +42,7 @@ std::string truncateQuotedNameBack(StringRef Label, StringRef Name,
     return Ret;
 
 template <typename T> std::string formatUnknownEnum(T Value) {
-  return formatv("unknown ({0})",
-                 static_cast<typename std::underlying_type<T>::type>(Value))
+  return formatv("unknown ({0})", static_cast<std::underlying_type_t<T>>(Value))
       .str();
 }
 

diff --git a/llvm/tools/llvm-xray/trie-node.h b/llvm/tools/llvm-xray/trie-node.h
@@ -48,7 +48,7 @@ template <typename T, typename Callable>
 TrieNode<T> *
 mergeTrieNodes(const TrieNode<T> &Left, const TrieNode<T> &Right,
                /*Non-deduced pointer type for nullptr compatibility*/
-               typename std::remove_reference<TrieNode<T> *>::type NewParent,
+               std::remove_reference_t<TrieNode<T> *> NewParent,
                std::forward_list<TrieNode<T>> &NodeStore,
                Callable &&MergeCallable) {
   llvm::function_ref<T(const T &, const T &)> MergeFn(

diff --git a/llvm/unittests/ADT/DenseSetTest.cpp b/llvm/unittests/ADT/DenseSetTest.cpp
@@ -52,7 +52,7 @@ template <typename T> class DenseSetTest : public testing::Test {
 
 private:
   static T GetTestSet() {
-    typename std::remove_const<T>::type Set;
+    std::remove_const_t<T> Set;
     Set.insert(0);
     Set.insert(1);
     Set.insert(2);

diff --git a/llvm/unittests/IR/PatternMatch.cpp b/llvm/unittests/IR/PatternMatch.cpp
@@ -1319,8 +1319,8 @@ TYPED_TEST_CASE(MutableConstTest, MutableConstTestTypes);
 TYPED_TEST(MutableConstTest, ICmp) {
   auto &IRB = PatternMatchTest::IRB;
 
-  typedef typename std::tuple_element<0, TypeParam>::type ValueType;
-  typedef typename std::tuple_element<1, TypeParam>::type InstructionType;
+  typedef std::tuple_element_t<0, TypeParam> ValueType;
+  typedef std::tuple_element_t<1, TypeParam> InstructionType;
 
   Value *L = IRB.getInt32(1);
   Value *R = IRB.getInt32(2);

diff --git a/llvm/unittests/XRay/GraphTest.cpp b/llvm/unittests/XRay/GraphTest.cpp
@@ -34,7 +34,7 @@ template <typename T> class GraphTest : public testing::Test {
 private:
   static T getTestGraph() {
     using std::make_pair;
-    typename std::remove_const<T>::type G;
+    std::remove_const_t<T> G;
     G.insert(make_pair(1u, VAttr({3u})));
     G.insert(make_pair(2u, VAttr({5u})));
     G.insert(make_pair(3u, VAttr({7u})));

diff --git a/llvm/utils/benchmark/include/benchmark/benchmark.h b/llvm/utils/benchmark/include/benchmark/benchmark.h
@@ -990,8 +990,7 @@ inline internal::Benchmark* RegisterBenchmark(const char* name,
 #ifdef BENCHMARK_HAS_CXX11
 template <class Lambda>
 internal::Benchmark* RegisterBenchmark(const char* name, Lambda&& fn) {
-  using BenchType =
-      internal::LambdaBenchmark<typename std::decay<Lambda>::type>;
+  using BenchType = internal::LambdaBenchmark<std::decay_t<Lambda>>;
   return internal::RegisterBenchmarkInternal(
       ::new BenchType(name, std::forward<Lambda>(fn)));
 }

diff --git a/llvm/utils/benchmark/src/sysinfo.cc b/llvm/utils/benchmark/src/sysinfo.cc
@@ -176,9 +176,8 @@ bool GetSysctl(std::string const& Name, std::string* Out) {
   return true;
 }
 
-template <class Tp,
-          class = typename std::enable_if<std::is_integral<Tp>::value>::type>
-bool GetSysctl(std::string const& Name, Tp* Out) {
+template <class Tp, class = std::enable_if_t<std::is_integral<Tp>::value>>
+bool GetSysctl(std::string const &Name, Tp *Out) {
   *Out = 0;
   auto Buff = GetSysctlImp(Name);
   if (!Buff) return false;

diff --git a/llvm/utils/unittest/googlemock/include/gmock/gmock-matchers.h b/llvm/utils/unittest/googlemock/include/gmock/gmock-matchers.h
@@ -3118,8 +3118,9 @@ class ElementsAreMatcherImpl : public MatcherInterface<Container> {
   typedef typename View::const_reference StlContainerReference;
   typedef decltype(std::begin(
       std::declval<StlContainerReference>())) StlContainerConstIterator;
-  typedef typename std::remove_reference<decltype(
-      *std::declval<StlContainerConstIterator &>())>::type Element;
+  typedef std::remove_reference_t<decltype(
+      *std::declval<StlContainerConstIterator &>())>
+      Element;
 
   // Constructs the matcher from a sequence of element values or
   // element matchers.
@@ -3360,8 +3361,9 @@ class UnorderedElementsAreMatcherImpl
   typedef typename View::const_reference StlContainerReference;
   typedef decltype(std::begin(
       std::declval<StlContainerReference>())) StlContainerConstIterator;
-  typedef typename std::remove_reference<decltype(
-      *std::declval<StlContainerConstIterator &>())>::type Element;
+  typedef std::remove_reference_t<decltype(
+      *std::declval<StlContainerConstIterator &>())>
+      Element;
 
   // Constructs the matcher from a sequence of element values or
   // element matchers.
@@ -3470,8 +3472,9 @@ class UnorderedElementsAreMatcher {
     typedef typename View::const_reference StlContainerReference;
     typedef decltype(std::begin(
         std::declval<StlContainerReference>())) StlContainerConstIterator;
-    typedef typename std::remove_reference<decltype(
-        *std::declval<StlContainerConstIterator &>())>::type Element;
+    typedef std::remove_reference_t<decltype(
+        *std::declval<StlContainerConstIterator &>())>
+        Element;
     typedef ::std::vector<Matcher<const Element&> > MatcherVec;
     MatcherVec matchers;
     matchers.reserve(::testing::tuple_size<MatcherTuple>::value);
@@ -3499,8 +3502,9 @@ class ElementsAreMatcher {
     typedef typename View::const_reference StlContainerReference;
     typedef decltype(std::begin(
         std::declval<StlContainerReference>())) StlContainerConstIterator;
-    typedef typename std::remove_reference<decltype(
-        *std::declval<StlContainerConstIterator &>())>::type Element;
+    typedef std::remove_reference_t<decltype(
+        *std::declval<StlContainerConstIterator &>())>
+        Element;
     typedef ::std::vector<Matcher<const Element&> > MatcherVec;
     MatcherVec matchers;
     matchers.reserve(::testing::tuple_size<MatcherTuple>::value);