[TableGen] Restore the use of the TheInit field in Record to cache the Record's DefInit. I broke this when I fixed memory leaks recently. Remove the DenseMap that mapped Record's to DefInit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240524 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 7 deletions

diff --git a/lib/TableGen/Record.cpp b/lib/TableGen/Record.cpp
index 97e796c1349..6e982bf1da1 100644
--- a/lib/TableGen/Record.cpp
+++ b/lib/TableGen/Record.cpp
@@ -1574,13 +1574,9 @@ void Record::checkName() {
 }
 
 DefInit *Record::getDefInit() {
-  static DenseMap<Record *, std::unique_ptr<DefInit>> ThePool;
-  if (TheInit)
-    return TheInit;
-
-  std::unique_ptr<DefInit> &I = ThePool[this];
-  if (!I) I.reset(new DefInit(this, new RecordRecTy(this)));
-  return I.get();
+  if (!TheInit)
+    TheInit.reset(new DefInit(this, new RecordRecTy(this)));
+  return TheInit.get();
 }
 
 const std::string &Record::getName() const {