1 files changed, 13 insertions, 1 deletions
diff --git a/include/llvm/ADT/ArrayRef.h b/include/llvm/ADT/ArrayRef.h
index d4152ec..e5562c3 100644
--- a/include/llvm/ADT/ArrayRef.h
+++ b/include/llvm/ADT/ArrayRef.h
@@ -80,9 +80,16 @@ namespace llvm {
 
     /// Construct an ArrayRef from a C array.
     template <size_t N>
-    /*implicit*/ ArrayRef(const T (&Arr)[N])
+    /*implicit*/ LLVM_CONSTEXPR ArrayRef(const T (&Arr)[N])
       : Data(Arr), Length(N) {}
 
+#if LLVM_HAS_INITIALIZER_LISTS
+    /// Construct an ArrayRef from a std::initializer_list.
+    /*implicit*/ ArrayRef(const std::initializer_list<T> &Vec)
+    : Data(Vec.begin() == Vec.end() ? (T*)0 : Vec.begin()),
+      Length(Vec.size()) {}
+#endif
+
     /// @}
     /// @name Simple Operations
     /// @{
@@ -178,6 +185,8 @@ namespace llvm {
   public:
     typedef T *iterator;
 
+    typedef std::reverse_iterator<iterator> reverse_iterator;
+
     /// Construct an empty MutableArrayRef.
     /*implicit*/ MutableArrayRef() : ArrayRef<T>() {}
 
@@ -212,6 +221,9 @@ namespace llvm {
     iterator begin() const { return data(); }
     iterator end() const { return data() + this->size(); }
 
+    reverse_iterator rbegin() const { return reverse_iterator(end()); }
+    reverse_iterator rend() const { return reverse_iterator(begin()); }
+
     /// front - Get the first element.
     T &front() const {
       assert(!this->empty());