Add missing header

llvm-svn: 222337

diff --git a/llvm/include/llvm/ADT/SmallPtrSet.h b/llvm/include/llvm/ADT/SmallPtrSet.h
index 1ac9bbf..b8977fa 100644 (file)
--- a/llvm/include/llvm/ADT/SmallPtrSet.h
+++ b/llvm/include/llvm/ADT/SmallPtrSet.h
@@ -22,6 +22,7 @@
 #include <cstddef>
 #include <cstring>
 #include <iterator>
+#include <utility>
 
 namespace llvm {