Revert "Just use a using directive in SmallMapVector instead of inheriting from MapVe...

This reverts commit r225059. I think MSVC 2012 has a problem with this. This is
an attempt to fix one of the MSVC 2012 bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225065 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/ADT/MapVector.h b/include/llvm/ADT/MapVector.h
index b10db611484af53a091fa219102e37e335b2f010..0727383310a0cf49b607f1f34673b9bf2d1a4529 100644 (file)
--- a/include/llvm/ADT/MapVector.h
+++ b/include/llvm/ADT/MapVector.h
@@ -185,9 +185,12 @@ void MapVector<KeyT, ValueT, MapType, VectorType>::remove_if(Function Pred) {
 /// \brief A MapVector that performs no allocations if smaller than a certain
 /// size.
 template <typename KeyT, typename ValueT, unsigned N>
-using SmallMapVector =
-  MapVector<KeyT, ValueT, SmallDenseMap<KeyT, unsigned, N>,
-            SmallVector<std::pair<KeyT, ValueT>, N>>;
+class SmallMapVector
+    : public MapVector<KeyT, ValueT, SmallDenseMap<KeyT, unsigned, N>,
+                       SmallVector<std::pair<KeyT, ValueT>, N>> {
+public:
+  SmallMapVector() {}
+};
 
 } // end namespace llvm