[llvm] Use llvm::interleaved (NFC) (#145839)

Note that llvm::interleaved constructs a string with the elements from
a given range with a given separator.

Author: kazutakahirata

llvm/lib/DebugInfo/GSYM/CallSiteInfo.cpp

@@ -12,6 +12,7 @@
 #include "llvm/DebugInfo/GSYM/GsymCreator.h"
 #include "llvm/MC/StringTableBuilder.h"
 #include "llvm/Support/DataExtractor.h"
+#include "llvm/Support/InterleavedRange.h"
 #include "llvm/Support/YAMLParser.h"
 #include "llvm/Support/YAMLTraits.h"
 #include "llvm/Support/raw_ostream.h"
@@ -231,13 +232,7 @@ Error CallSiteInfoLoader::processYAMLFunctions(
 raw_ostream &gsym::operator<<(raw_ostream &OS, const CallSiteInfo &CSI) {
   OS << "  Return=" << HEX64(CSI.ReturnOffset);
   OS << "  Flags=" << HEX8(CSI.Flags);
-
-  OS << "  RegEx=";
-  for (uint32_t i = 0; i < CSI.MatchRegex.size(); ++i) {
-    if (i > 0)
-      OS << ",";
-    OS << CSI.MatchRegex[i];
-  }
+  OS << "  RegEx=" << llvm::interleaved(CSI.MatchRegex, ",");
   return OS;
 }
 

llvm/tools/llvm-exegesis/lib/MCInstrDescView.cpp

@@ -12,6 +12,7 @@
 #include <tuple>
 
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/Support/InterleavedRange.h"
 
 namespace llvm {
 namespace exegesis {
@@ -293,15 +294,8 @@ void Instruction::dump(const MCRegisterInfo &RegInfo,
   }
   for (const auto &Var : Variables) {
     Stream << "- Var" << Var.getIndex();
-    Stream << " [";
-    bool IsFirst = true;
-    for (auto OperandIndex : Var.TiedOperands) {
-      if (!IsFirst)
-        Stream << ",";
-      Stream << "Op" << OperandIndex;
-      IsFirst = false;
-    }
-    Stream << "]";
+    Stream << " ";
+    Stream << llvm::interleaved_array(Var.TiedOperands, ",");
     Stream << "\n";
   }
   if (hasMemoryOperands())

llvm/tools/llvm-remarkutil/RemarkCounter.cpp

@@ -13,6 +13,7 @@
 #include "RemarkCounter.h"
 #include "RemarkUtilRegistry.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InterleavedRange.h"
 #include "llvm/Support/Regex.h"
 
 using namespace llvm;
@@ -197,23 +198,11 @@ Error ArgumentCounter::print(StringRef OutputFileName) {
 
   auto OF = std::move(*MaybeOF);
   OF->os() << groupByToStr(Group) << ",";
-  unsigned Idx = 0;
-  for (auto [Key, _] : ArgumentSetIdxMap) {
-    OF->os() << Key;
-    if (Idx != ArgumentSetIdxMap.size() - 1)
-      OF->os() << ",";
-    Idx++;
-  }
+  OF->os() << llvm::interleaved(llvm::make_first_range(ArgumentSetIdxMap), ",");
   OF->os() << "\n";
   for (auto [Header, CountVector] : CountByKeysMap) {
     OF->os() << Header << ",";
-    unsigned Idx = 0;
-    for (auto Count : CountVector) {
-      OF->os() << Count;
-      if (Idx != ArgumentSetIdxMap.size() - 1)
-        OF->os() << ",";
-      Idx++;
-    }
+    OF->os() << llvm::interleaved(CountVector, ",");
     OF->os() << "\n";
   }
   return Error::success();