Use llvm::copy. NFC

llvm-svn: 347126
diff --git a/llvm/lib/Analysis/LoopAccessAnalysis.cpp b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
index 4b8e8af..3c6c2ab 100644
--- a/llvm/lib/Analysis/LoopAccessAnalysis.cpp
+++ b/llvm/lib/Analysis/LoopAccessAnalysis.cpp
@@ -420,7 +420,7 @@
 
     // We've computed the grouped checks for this partition.
     // Save the results and continue with the next one.
-    std::copy(Groups.begin(), Groups.end(), std::back_inserter(CheckingGroups));
+    llvm::copy(Groups, std::back_inserter(CheckingGroups));
   }
 }