eliminate the Records global variable, patch by Garrison Venn!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121659 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 5 deletions

diff --git a/utils/TableGen/Record.h b/utils/TableGen/Record.h
index cfe1a4861b..0853037fe3 100644
--- a/utils/TableGen/Record.h
+++ b/utils/TableGen/Record.h
@@ -57,6 +57,7 @@ class VarListElementInit;
 class Record;
 class RecordVal;
 struct MultiClass;
+class RecordKeeper;
 
 //===----------------------------------------------------------------------===//
 //  Type Classes
@@ -1227,10 +1228,15 @@ class Record {
   std::vector<std::string> TemplateArgs;
   std::vector<RecordVal> Values;
   std::vector<Record*> SuperClasses;
+
+  // Tracks Record instances. Not owned by Record.
+  RecordKeeper &TrackedRecords;
+
 public:
 
-  explicit Record(const std::string &N, SMLoc loc) :
-    ID(LastID++), Name(N), Loc(loc) {}
+  // Constructs a record. See also RecordKeeper::createRecord.
+  explicit Record(const std::string &N, SMLoc loc, RecordKeeper& records) :
+    ID(LastID++), Name(N), Loc(loc), TrackedRecords(records) {}
   ~Record() {}
 
 
@@ -1315,6 +1321,10 @@ public:
   /// possible references.
   void resolveReferencesTo(const RecordVal *RV);
 
+  RecordKeeper &getRecords() const {
+    return(TrackedRecords);
+  }
+
   void dump() const;
 
   //===--------------------------------------------------------------------===//
@@ -1396,7 +1406,8 @@ struct MultiClass {
 
   void dump() const;
 
-  MultiClass(const std::string &Name, SMLoc Loc) : Rec(Name, Loc) {}
+  MultiClass(const std::string &Name, SMLoc Loc, RecordKeeper &Records) : 
+    Rec(Name, Loc, Records) {}
 };
 
 class RecordKeeper {
@@ -1453,6 +1464,11 @@ public:
   std::vector<Record*>
   getAllDerivedDefinitions(const std::string &ClassName) const;
 
+  // allocates and returns a record. 
+  Record *createRecord(const std::string &N, SMLoc loc) {
+    return(new Record(N, loc, *this));
+  }
+
 
   void dump() const;
 };
@@ -1488,8 +1504,6 @@ public:
 
 raw_ostream &operator<<(raw_ostream &OS, const RecordKeeper &RK);
 
-extern RecordKeeper Records;
-
 void PrintError(SMLoc ErrorLoc, const Twine &Msg);
 
 } // End llvm namespace