diff --git a/llvm/lib/Analysis/TFUtils.cpp b/llvm/lib/Analysis/TFUtils.cpp
index 1377cac217abd6..701b654ba58a39 100644
--- a/llvm/lib/Analysis/TFUtils.cpp
+++ b/llvm/lib/Analysis/TFUtils.cpp
@@ -71,11 +71,9 @@ void writeTensorValues(raw_ostream &OutFile, const char *TensorData,
                        size_t ElemCount) {
   OutFile << "[";
   const T *TypedData = reinterpret_cast<const T *>(TensorData);
-  for (size_t I = 0; I < ElemCount; ++I) {
-    if (I > 0)
-      OutFile << ", ";
-    OutFile << TypedData[I];
-  }
+  ListSeparator LS;
+  for (size_t I = 0; I < ElemCount; ++I)
+    OutFile << LS << TypedData[I];
   OutFile << "]";
 }