1 files changed, 3 insertions, 62 deletions

diff --git a/include/llvm/ADT/ArrayRef.h b/include/llvm/ADT/ArrayRef.h
index 5b7ed9c..f7b055e 100644
--- a/include/llvm/ADT/ArrayRef.h
+++ b/include/llvm/ADT/ArrayRef.h
@@ -11,7 +11,6 @@
 #define LLVM_ADT_ARRAYREF_H
 
 #include "llvm/ADT/None.h"
-#include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"
 #include <vector>
 
@@ -44,19 +43,6 @@ namespace llvm {
     /// The number of elements.
     size_type Length;
 
-    /// \brief A dummy "optional" type that is only created by implicit
-    /// conversion from a reference to T.
-    ///
-    /// This type must *only* be used in a function argument or as a copy of
-    /// a function argument, as otherwise it will hold a pointer to a temporary
-    /// past that temporaries' lifetime.
-    struct TRefOrNothing {
-      const T *TPtr;
-
-      TRefOrNothing() : TPtr(nullptr) {}
-      TRefOrNothing(const T &TRef) : TPtr(&TRef) {}
-    };
-
   public:
     /// @name Constructors
     /// @{
@@ -151,13 +137,9 @@ namespace llvm {
     bool equals(ArrayRef RHS) const {
       if (Length != RHS.Length)
         return false;
-      // Don't use std::equal(), since it asserts in MSVC on nullptr iterators.
-      for (auto L = begin(), LE = end(), R = RHS.begin(); L != LE; ++L, ++R)
-        // Match std::equal() in using == (instead of !=) to minimize API
-        // requirements of ArrayRef'ed types.
-        if (!(*L == *R))
-          return false;
-      return true;
+      if (Length == 0)
+        return true;
+      return std::equal(begin(), end(), RHS.begin());
     }
 
     /// slice(n) - Chop off the first N elements of the array.
@@ -202,47 +184,6 @@ namespace llvm {
     }
 
     /// @}
-    /// @{
-    /// @name Convenience methods
-
-    /// @brief Predicate for testing that the array equals the exact sequence of
-    /// arguments.
-    ///
-    /// Will return false if the size is not equal to the exact number of
-    /// arguments given or if the array elements don't equal the argument
-    /// elements in order. Currently supports up to 16 arguments, but can
-    /// easily be extended.
-    bool equals(TRefOrNothing Arg0 = TRefOrNothing(),
-                TRefOrNothing Arg1 = TRefOrNothing(),
-                TRefOrNothing Arg2 = TRefOrNothing(),
-                TRefOrNothing Arg3 = TRefOrNothing(),
-                TRefOrNothing Arg4 = TRefOrNothing(),
-                TRefOrNothing Arg5 = TRefOrNothing(),
-                TRefOrNothing Arg6 = TRefOrNothing(),
-                TRefOrNothing Arg7 = TRefOrNothing(),
-                TRefOrNothing Arg8 = TRefOrNothing(),
-                TRefOrNothing Arg9 = TRefOrNothing(),
-                TRefOrNothing Arg10 = TRefOrNothing(),
-                TRefOrNothing Arg11 = TRefOrNothing(),
-                TRefOrNothing Arg12 = TRefOrNothing(),
-                TRefOrNothing Arg13 = TRefOrNothing(),
-                TRefOrNothing Arg14 = TRefOrNothing(),
-                TRefOrNothing Arg15 = TRefOrNothing()) {
-      TRefOrNothing Args[] = {Arg0,  Arg1,  Arg2,  Arg3, Arg4,  Arg5,
-                              Arg6,  Arg7,  Arg8,  Arg9, Arg10, Arg11,
-                              Arg12, Arg13, Arg14, Arg15};
-      if (size() > array_lengthof(Args))
-        return false;
-
-      for (unsigned i = 0, e = size(); i != e; ++i)
-        if (Args[i].TPtr == nullptr || (*this)[i] != *Args[i].TPtr)
-          return false;
-
-      // Either the size is exactly as many args, or the next arg must be null.
-      return size() == array_lengthof(Args) || Args[size()].TPtr == nullptr;
-    }
-
-    /// @}
   };
 
   /// MutableArrayRef - Represent a mutable reference to an array (0 or more