[AVX] Make CodeInit Unique

Use a StringMap to ensure CodeInits are unique and created only
once.

llvm-svn: 136492

1 files changed, 6 insertions, 1 deletions

diff --git a/llvm/utils/TableGen/Record.cpp b/llvm/utils/TableGen/Record.cpp
index ee5db4713dc..133a1581c0e 100644
--- a/llvm/utils/TableGen/Record.cpp
+++ b/llvm/utils/TableGen/Record.cpp
@@ -575,7 +575,12 @@ const StringInit *StringInit::get(const std::string &V) {
 }
 
 const CodeInit *CodeInit::get(const std::string &V) {
-  return new CodeInit(V);
+  typedef StringMap<CodeInit *> Pool;
+  static Pool ThePool;
+
+  CodeInit *&I = ThePool[V];
+  if (!I) I = new CodeInit(V);
+  return I;
 }
 
 const ListInit *ListInit::get(ArrayRef<const Init *> Range, RecTy *EltTy) {