[llvm] [NFC][LLVM] Adopt ListSeparator in more places (PR #172909)

[Rahul Joshi via llvm-commits]

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@@ -230,13 +231,9 @@ template <typename ContextT> class GenericCycle {
 
   Printable printEntries(const ContextT &Ctx) const {
     return Printable([this, &Ctx](raw_ostream &Out) {
-      bool First = true;
-      for (auto *Entry : Entries) {
-        if (!First)
-          Out << ' ';
-        First = false;
-        Out << Ctx.print(Entry);
-      }
+      ListSeparator LS(" ");
+      for (auto *Entry : Entries)
+        Out << LS << Ctx.print(Entry);
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jurahul wrote:

Resolving in favor of not using formatv() per comment.

https://github.com/llvm/llvm-project/pull/172909