Clarify name of Record::TheInit

[Paul-C-Anagnostopoulos]

Summary

I changed the name of the Record::TheInit data member to CorrespondingDefInit to make the code clearer.

I'm making these little changes as I write the "TableGen Backend Developer's Guide" and learn more about how everything works.

[lattner]

Please fix the clang format issues, but otherwise LGTM!

[Paul-C-Anagnostopoulos]

Thanks! I made the formatting changes and will push it on Saturday.

llvm/include/llvm/TableGen/Record.h

   // Tracks Record instances. Not owned by Record.
   RecordKeeper &TrackedRecords;
 
-  DefInit *TheInit = nullptr;
+  // The DefInit corresponding to this record.
+  DefInit *CorrespondingDefInit = nullptr;
 
   // Unique record ID.
   unsigned ID;

       : Record(StringInit::get(N), locs, records, false, Class) {}
 
   // When copy-constructing a Record, we must still guarantee a globally unique
-  // ID number.  Don't copy TheInit either since it's owned by the original
-  // record. All other fields can be copied normally.
+  // ID number. Don't copy CorrespondingDefInit either, since it's owned by the
+  // original record. All other fields can be copied normally.
   Record(const Record &O)
     : Name(O.Name), Locs(O.Locs), TemplateArgs(O.TemplateArgs),
       Values(O.Values), SuperClasses(O.SuperClasses),

   }
 
   void addSuperClass(Record *R, SMRange Range) {
-    assert(!TheInit && "changing type of record after it has been referenced");
+    assert(!CorrespondingDefInit &&
+               "changing type of record after it has been referenced");
     assert(!isSubClassOf(R) && "Already subclassing record!");
     SuperClasses.push_back(std::make_pair(R, Range));
   }

llvm/lib/TableGen/Record.cpp

 }
 
 DefInit *Record::getDefInit() {
-  if (!TheInit)
-    TheInit = new(Allocator) DefInit(this);
-  return TheInit;
+  if (!CorrespondingDefInit)
+    CorrespondingDefInit = new(Allocator) DefInit(this);
+  return CorrespondingDefInit;
 }
 
 void Record::setName(Init *NewName) {