Index: include/llvm/TableGen/Record.h
===================================================================
--- include/llvm/TableGen/Record.h
+++ include/llvm/TableGen/Record.h
@@ -1503,6 +1503,7 @@
 class RecordKeeper {
   using RecordMap = std::map<std::string, std::unique_ptr<Record>>;
   RecordMap Classes, Defs;
+  unsigned AnonCounter = 0;
 
 public:
   const RecordMap &getClasses() const { return Classes; }
@@ -1532,6 +1533,8 @@
     assert(Ins && "Record already exists");
   }
 
+  Init *getNewAnonymousName();
+
   //===--------------------------------------------------------------------===//
   // High-level helper methods, useful for tablegen backends...
 
Index: lib/TableGen/Record.cpp
===================================================================
--- lib/TableGen/Record.cpp
+++ lib/TableGen/Record.cpp
@@ -1833,6 +1833,12 @@
   return OS;
 }
 
+/// GetNewAnonymousName - Generate a unique anonymous name that can be used as
+/// an identifier.
+Init *RecordKeeper::getNewAnonymousName() {
+  return StringInit::get("anonymous_" + utostr(AnonCounter++));
+}
+
 std::vector<Record *>
 RecordKeeper::getAllDerivedDefinitions(StringRef ClassName) const {
   Record *Class = getClass(ClassName);
Index: lib/TableGen/TGParser.h
===================================================================
--- lib/TableGen/TGParser.h
+++ lib/TableGen/TGParser.h
@@ -68,8 +68,6 @@
   // Record tracker
   RecordKeeper &Records;
 
-  unsigned AnonCounter;
-
   // A "named boolean" indicating how to parse identifiers.  Usually
   // identifiers map to some existing object but in special cases
   // (e.g. parsing def names) no such object exists yet because we are
@@ -84,7 +82,7 @@
 
 public:
   TGParser(SourceMgr &SrcMgr, RecordKeeper &records)
-      : Lex(SrcMgr), CurMultiClass(nullptr), Records(records), AnonCounter(0) {}
+      : Lex(SrcMgr), CurMultiClass(nullptr), Records(records) {}
 
   /// ParseFile - Main entrypoint for parsing a tblgen file.  These parser
   /// routines return true on error, or false on success.
@@ -110,8 +108,6 @@
   bool AddSubMultiClass(MultiClass *CurMC,
                         SubMultiClassReference &SubMultiClass);
 
-  Init *GetNewAnonymousName();
-
   // IterRecord: Map an iterator name to a value.
   struct IterRecord {
     VarInit *IterVar;
Index: lib/TableGen/TGParser.cpp
===================================================================
--- lib/TableGen/TGParser.cpp
+++ lib/TableGen/TGParser.cpp
@@ -411,7 +411,7 @@
     if (!IterRec->isAnonymous())
       return Error(Loc, "def already exists: " +IterRec->getNameInitAsString());
 
-    IterRec->setName(GetNewAnonymousName());
+    IterRec->setName(Records.getNewAnonymousName());
   }
 
   Record *IterRecSave = IterRec.get(); // Keep a copy before release.
@@ -432,12 +432,6 @@
          K == tgtok::MultiClass || K == tgtok::Foreach;
 }
 
-/// GetNewAnonymousName - Generate a unique anonymous name that can be used as
-/// an identifier.
-Init *TGParser::GetNewAnonymousName() {
-  return StringInit::get("anonymous_" + utostr(AnonCounter++));
-}
-
 /// ParseObjectName - If an object name is specified, return it.  Otherwise,
 /// return 0.
 ///   ObjectName ::= Value [ '#' Value ]*
@@ -1369,8 +1363,9 @@
     SMLoc EndLoc = Lex.getLoc();
 
     // Create the new record, set it as CurRec temporarily.
-    auto NewRecOwner = llvm::make_unique<Record>(GetNewAnonymousName(), NameLoc,
-                                                 Records, /*IsAnonymous=*/true);
+    auto NewRecOwner =
+        make_unique<Record>(Records.getNewAnonymousName(), NameLoc, Records,
+                            /*IsAnonymous=*/true);
     Record *NewRec = NewRecOwner.get(); // Keep a copy since we may release.
     SCRef.RefRange = SMRange(NameLoc, EndLoc);
     SCRef.Rec = Class;
@@ -2163,8 +2158,8 @@
   if (Name)
     CurRecOwner = make_unique<Record>(Name, DefLoc, Records);
   else
-    CurRecOwner = llvm::make_unique<Record>(GetNewAnonymousName(), DefLoc,
-                                            Records, /*IsAnonymous=*/true);
+    CurRecOwner = make_unique<Record>(Records.getNewAnonymousName(), DefLoc,
+                                      Records, /*IsAnonymous=*/true);
   Record *CurRec = CurRecOwner.get(); // Keep a copy since we may release.
 
   if (!CurMultiClass && Loops.empty()) {
@@ -2509,7 +2504,7 @@
 
   bool IsAnonymous = false;
   if (!DefmPrefix) {
-    DefmPrefix = GetNewAnonymousName();
+    DefmPrefix = Records.getNewAnonymousName();
     IsAnonymous = true;
   }