Use empty() instead of begin() == end().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54780 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/StrongPHIElimination.cpp b/lib/CodeGen/StrongPHIElimination.cpp
index 37f54ce..9f59417 100644
--- a/lib/CodeGen/StrongPHIElimination.cpp
+++ b/lib/CodeGen/StrongPHIElimination.cpp
@@ -848,7 +848,7 @@
     RHS.removeValNo(*VI);
   }
   
-  if (RHS.begin() == RHS.end())
+  if (RHS.empty())
     LI.removeInterval(RHS.reg);
 }