diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index 23cd088..d9a4de5 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -3062,7 +3062,7 @@
 
 /// Emit the combined summary section into the combined index file.
 static void WriteCombinedGlobalValueSummary(
-    const ModuleSummaryIndex &I, BitstreamWriter &Stream,
+    const ModuleSummaryIndex &Index, BitstreamWriter &Stream,
     std::map<GlobalValue::GUID, unsigned> &GUIDToValueIdMap,
     unsigned GlobalValueId) {
   Stream.EnterSubblock(bitc::GLOBALVAL_SUMMARY_BLOCK_ID, 3);
@@ -3101,13 +3101,13 @@
   unsigned FSModRefsAbbrev = Stream.EmitAbbrev(Abbv);
 
   SmallVector<uint64_t, 64> NameVals;
-  for (const auto &FII : I) {
+  for (const auto &FII : Index) {
     for (auto &FI : FII.second) {
       GlobalValueSummary *S = FI->summary();
       assert(S);
 
       if (auto *VS = dyn_cast<GlobalVarSummary>(S)) {
-        NameVals.push_back(I.getModuleId(VS->modulePath()));
+        NameVals.push_back(Index.getModuleId(VS->modulePath()));
         NameVals.push_back(getEncodedLinkage(VS->linkage()));
         for (auto &RI : VS->refs()) {
           const auto &VMI = GUIDToValueIdMap.find(RI);
@@ -3136,7 +3136,7 @@
       }
 
       auto *FS = cast<FunctionSummary>(S);
-      NameVals.push_back(I.getModuleId(FS->modulePath()));
+      NameVals.push_back(Index.getModuleId(FS->modulePath()));
       NameVals.push_back(getEncodedLinkage(FS->linkage()));
       NameVals.push_back(FS->instCount());
       NameVals.push_back(FS->refs().size());