[MISC]Fix wrong usage of std::equal()
Differential Revision: https://reviews.llvm.org/D49958

llvm-svn: 340000
diff --git a/llvm/unittests/ADT/STLExtrasTest.cpp b/llvm/unittests/ADT/STLExtrasTest.cpp
index 1e1e9c3..427d470 100644
--- a/llvm/unittests/ADT/STLExtrasTest.cpp
+++ b/llvm/unittests/ADT/STLExtrasTest.cpp
@@ -415,4 +415,19 @@
   EXPECT_EQ(EIR.end(), I);
 }
 
+TEST(STLExtrasTest, splat) {
+  std::vector<int> V;
+  EXPECT_FALSE(is_splat(V));
+
+  V.push_back(1);
+  EXPECT_TRUE(is_splat(V));
+
+  V.push_back(1);
+  V.push_back(1);
+  EXPECT_TRUE(is_splat(V));
+
+  V.push_back(2);
+  EXPECT_FALSE(is_splat(V));
+}
+
 } // namespace