diff --git a/include/llvm/ADT/DenseMap.h b/include/llvm/ADT/DenseMap.h
index ce0b05db840..595eabd0ffb 100644
--- a/include/llvm/ADT/DenseMap.h
+++ b/include/llvm/ADT/DenseMap.h
@@ -924,6 +924,9 @@ public:
     this->insert(I, E);
   }
 
+  SmallDenseMap(std::initializer_list<typename BaseT::value_type> Vals)
+      : SmallDenseMap(Vals.begin(), Vals.end()) {}
+
   ~SmallDenseMap() {
     this->destroyAll();
     deallocateBuckets();
diff --git a/unittests/ADT/DenseMapTest.cpp b/unittests/ADT/DenseMapTest.cpp
index 58eac978157..352270adec0 100644
--- a/unittests/ADT/DenseMapTest.cpp
+++ b/unittests/ADT/DenseMapTest.cpp
@@ -547,6 +547,15 @@ TEST(DenseMapCustomTest, FindAsTest) {
   EXPECT_TRUE(map.find_as("d") == map.end());
 }
 
+TEST(DenseMapCustomTest, SmallDenseMapInitializerList) {
+  SmallDenseMap<int, int> M = {{0, 0}, {0, 1}, {1, 2}};
+  EXPECT_EQ(2u, M.size());
+  EXPECT_EQ(1u, M.count(0));
+  EXPECT_EQ(0, M[0]);
+  EXPECT_EQ(1u, M.count(1));
+  EXPECT_EQ(2, M[1]);
+}
+
 struct ContiguousDenseMapInfo {
   static inline unsigned getEmptyKey() { return ~0; }
   static inline unsigned getTombstoneKey() { return ~0U - 1; }