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

llvm-svn: 54780
diff --git a/llvm/lib/CodeGen/StrongPHIElimination.cpp b/llvm/lib/CodeGen/StrongPHIElimination.cpp
index 37f54ce..9f59417 100644
--- a/llvm/lib/CodeGen/StrongPHIElimination.cpp
+++ b/llvm/lib/CodeGen/StrongPHIElimination.cpp
@@ -848,7 +848,7 @@
     RHS.removeValNo(*VI);
   }
   
-  if (RHS.begin() == RHS.end())
+  if (RHS.empty())
     LI.removeInterval(RHS.reg);
 }