[llvm] Use llvm::interleaved (NFC) (#137531)

Author: kazutakahirata

llvm/include/llvm/IR/ModuleSummaryIndex.h

@@ -378,14 +378,7 @@ struct MIBInfo {
 
 inline raw_ostream &operator<<(raw_ostream &OS, const MIBInfo &MIB) {
   OS << "AllocType " << (unsigned)MIB.AllocType;
-  bool First = true;
-  OS << " StackIds: ";
-  for (auto Id : MIB.StackIdIndices) {
-    if (!First)
-      OS << ", ";
-    First = false;
-    OS << Id;
-  }
+  OS << " StackIds: " << llvm::interleaved(MIB.StackIdIndices);
   return OS;
 }
 

llvm/utils/TableGen/OptionParserEmitter.cpp

@@ -11,6 +11,7 @@
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/Twine.h"
+#include "llvm/Support/InterleavedRange.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/TableGen/Record.h"
 #include "llvm/TableGen/StringToOffsetTable.h"
@@ -232,17 +233,8 @@ static void emitHelpTextsForVariants(
     assert(Visibilities.size() <= MaxVisibilityPerHelp &&
            "Too many visibilities to store in an "
            "OptTable::HelpTextsForVariants entry");
-    OS << "{std::array<unsigned, " << MaxVisibilityPerHelp << ">{{";
-
-    auto VisibilityEnd = Visibilities.cend();
-    for (auto Visibility = Visibilities.cbegin(); Visibility != VisibilityEnd;
-         ++Visibility) {
-      OS << *Visibility;
-      if (std::next(Visibility) != VisibilityEnd)
-        OS << ", ";
-    }
-
-    OS << "}}, ";
+    OS << "{std::array<unsigned, " << MaxVisibilityPerHelp << ">{{"
+       << llvm::interleaved(Visibilities) << "}}, ";
 
     if (Help.size())
       writeCstring(OS, Help);