[PATCH] D27262: Add front() method to SetVector.

[Jan Sjödin via Phabricator via llvm-commits]

jsjodin created this revision.
jsjodin added reviewers: arsenm, tstellarAMD.
jsjodin added a subscriber: llvm-commits.
Herald added a subscriber: wdng.

This will later be needed by the Machine CFG Structurizer.


https://reviews.llvm.org/D27262

Files:
  include/llvm/ADT/SetVector.h


Index: include/llvm/ADT/SetVector.h
===================================================================
--- include/llvm/ADT/SetVector.h
+++ include/llvm/ADT/SetVector.h
@@ -112,6 +112,12 @@
     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!");


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