Add an operator< for SmallVector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51791 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/ADT/SmallVector.h b/include/llvm/ADT/SmallVector.h
index 843d561b6bc73b5b30ca3a4440853a2aa30106f8..715f28c279654c75228b5aaefa0f5abcd3fc68c4 100644 (file)
--- a/include/llvm/ADT/SmallVector.h
+++ b/include/llvm/ADT/SmallVector.h
@@ -307,6 +307,11 @@ public:
     return true;
   }
   bool operator!=(const SmallVectorImpl &RHS) const { return !(*this == RHS); }
+
+  bool operator<(const SmallVectorImpl &RHS) const {
+    return std::lexicographical_compare(begin(), end(),
+                                        RHS.begin(), RHS.end());
+  }
   
 private:
   /// isSmall - Return true if this is a smallvector which has not had dynamic