diff --git a/llvm/include/llvm/ADT/bit.h b/llvm/include/llvm/ADT/bit.h
--- a/llvm/include/llvm/ADT/bit.h
+++ b/llvm/include/llvm/ADT/bit.h
@@ -26,7 +26,8 @@
           , typename = typename std::enable_if<sizeof(To) == sizeof(From)>::type
 #if (__has_feature(is_trivially_constructible) && defined(_LIBCPP_VERSION)) || \
     (defined(__GNUC__) && __GNUC__ >= 5)
-          , typename = typename std::is_trivially_constructible<To>::type
+          , typename = typename std::enable_if<
+              std::is_trivially_constructible<To>::value>::type
 #elif __has_feature(is_trivially_constructible)
           , typename = typename std::enable_if<__is_trivially_constructible(To)>::type
 #else