diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index 471c71f75eb23..6055c3d791cb2 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -116,6 +116,7 @@
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/InterleavedRange.h"
 #include "llvm/Support/KnownBits.h"
 #include "llvm/Support/SaveAndRestore.h"
 #include "llvm/Support/raw_ostream.h"
@@ -349,11 +350,9 @@ void SCEV::print(raw_ostream &OS) const {
     default:
       llvm_unreachable("There are no other nary expression types.");
     }
-    OS << "(";
-    ListSeparator LS(OpStr);
-    for (const SCEV *Op : NAry->operands())
-      OS << LS << *Op;
-    OS << ")";
+    OS << "("
+       << llvm::interleaved(llvm::make_pointee_range(NAry->operands()), OpStr)
+       << ")";
     switch (NAry->getSCEVType()) {
     case scAddExpr:
     case scMulExpr:
diff --git a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
index 1032dede7cb36..a72c1d329e199 100644
--- a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -63,6 +63,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/GraphWriter.h"
+#include "llvm/Support/InterleavedRange.h"
 #include "llvm/Support/KnownFPClass.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/TypeSize.h"
@@ -1012,12 +1013,7 @@ namespace {
 #ifndef NDEBUG
 static raw_ostream &operator<<(raw_ostream &OS,
                                const AAPointerInfo::OffsetInfo &OI) {
-  ListSeparator LS;
-  OS << "[";
-  for (auto Offset : OI) {
-    OS << LS << Offset;
-  }
-  OS << "]";
+  OS << llvm::interleaved_array(OI);
   return OS;
 }
 #endif // NDEBUG
diff --git a/llvm/lib/Transforms/IPO/MemProfContextDisambiguation.cpp b/llvm/lib/Transforms/IPO/MemProfContextDisambiguation.cpp
index 207e86b22db1d..0d299b8402cdf 100644
--- a/llvm/lib/Transforms/IPO/MemProfContextDisambiguation.cpp
+++ b/llvm/lib/Transforms/IPO/MemProfContextDisambiguation.cpp
@@ -39,6 +39,7 @@
 #include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/GraphWriter.h"
+#include "llvm/Support/InterleavedRange.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Transforms/IPO.h"
 #include "llvm/Transforms/Utils/CallPromotionUtils.h"
@@ -2955,11 +2956,7 @@ void CallsiteContextGraph<DerivedCCG, FuncTy, CallTy>::ContextNode::print(
   for (auto &Edge : CallerEdges)
     OS << "\t\t" << *Edge << "\n";
   if (!Clones.empty()) {
-    OS << "\tClones: ";
-    ListSeparator LS;
-    for (auto *Clone : Clones)
-      OS << LS << Clone;
-    OS << "\n";
+    OS << "\tClones: " << llvm::interleaved(Clones) << "\n";
   } else if (CloneOf) {
     OS << "\tClone of " << CloneOf << "\n";
   }