[AVX] Make FieldInit Unique
Make sure FieldInits are unique and created only once.
llvm-svn: 136500
diff --git a/llvm/utils/TableGen/Record.cpp b/llvm/utils/TableGen/Record.cpp
index 89de3ed..d4e6083 100644
--- a/llvm/utils/TableGen/Record.cpp
+++ b/llvm/utils/TableGen/Record.cpp
@@ -1475,7 +1475,15 @@
}
const FieldInit *FieldInit::get(const Init *R, const std::string &FN) {
- return new FieldInit(R, FN);
+ typedef std::pair<const Init *, TableGenStringKey> Key;
+ typedef DenseMap<Key, FieldInit *> Pool;
+ static Pool ThePool;
+
+ Key TheKey(std::make_pair(R, FN));
+
+ FieldInit *&I = ThePool[TheKey];
+ if (!I) I = new FieldInit(R, FN);
+ return I;
}
const Init *FieldInit::resolveBitReference(Record &R, const RecordVal *RV,