From d4c5f2a8dce8fe27336dde99f93f3d5a9ae2a696 Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Fri, 13 Sep 2019 13:47:49 +0000
Subject: [PATCH] [ADT] Remove a workaround for old versions of clang

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@371856 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ADT/DenseMap.h | 28 +---------------------------
 1 file changed, 1 insertion(+), 27 deletions(-)

diff --git a/include/llvm/ADT/DenseMap.h b/include/llvm/ADT/DenseMap.h
index 57b6b736f6a..948a6e6bfb3 100644
--- a/include/llvm/ADT/DenseMap.h
+++ b/include/llvm/ADT/DenseMap.h
@@ -38,33 +38,7 @@ namespace detail {
 // implementation without requiring two members.
 template <typename KeyT, typename ValueT>
 struct DenseMapPair : public std::pair<KeyT, ValueT> {
-
-  // FIXME: Switch to inheriting constructors when we drop support for older
-  //        clang versions.
-  // NOTE: This default constructor is declared with '{}' rather than
-  //       '= default' to work around a separate bug in clang-3.8. This can
-  //       also go when we switch to inheriting constructors.
-  DenseMapPair() {}
-
-  DenseMapPair(const KeyT &Key, const ValueT &Value)
-      : std::pair<KeyT, ValueT>(Key, Value) {}
-
-  DenseMapPair(KeyT &&Key, ValueT &&Value)
-      : std::pair<KeyT, ValueT>(std::move(Key), std::move(Value)) {}
-
-  template <typename AltKeyT, typename AltValueT>
-  DenseMapPair(AltKeyT &&AltKey, AltValueT &&AltValue,
-               typename std::enable_if<
-                   std::is_convertible<AltKeyT, KeyT>::value &&
-                   std::is_convertible<AltValueT, ValueT>::value>::type * = 0)
-      : std::pair<KeyT, ValueT>(std::forward<AltKeyT>(AltKey),
-                                std::forward<AltValueT>(AltValue)) {}
-
-  template <typename AltPairT>
-  DenseMapPair(AltPairT &&AltPair,
-               typename std::enable_if<std::is_convertible<
-                   AltPairT, std::pair<KeyT, ValueT>>::value>::type * = nullptr)
-      : std::pair<KeyT, ValueT>(std::forward<AltPairT>(AltPair)) {}
+  using std::pair<KeyT, ValueT>::pair;
 
   KeyT &getFirst() { return std::pair<KeyT, ValueT>::first; }
   const KeyT &getFirst() const { return std::pair<KeyT, ValueT>::first; }
-- 
2.40.0