Add front() method to SetVector.

Differential Revision: https://reviews.llvm.org/D27262 llvm-svn: 297398
llvm · Mar 9, 2017 · cc36734 · cc36734
1 parent 2b4917f
commit cc36734
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/llvm/include/llvm/ADT/SetVector.h b/llvm/include/llvm/ADT/SetVector.h
@@ -119,6 +119,12 @@ class SetVector {
     return vector_.rend();
   }
 
+  /// \brief Return the first element of the SetVector.
+  const T &front() const {
+    assert(!empty() && "Cannot call front() on empty SetVector!");
+    return vector_.front();
+  }
+
   /// \brief Return the last element of the SetVector.
   const T &back() const {
     assert(!empty() && "Cannot call back() on empty SetVector!");