Switch CGDebugInfo type cache to using an AssertingVH.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82321 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/CodeGen/CGDebugInfo.h b/lib/CodeGen/CGDebugInfo.h
index 3308a6b952..d0f0731d6b 100644
--- a/lib/CodeGen/CGDebugInfo.h
+++ b/lib/CodeGen/CGDebugInfo.h
@@ -18,10 +18,15 @@
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/Analysis/DebugInfo.h"
+#include "llvm/Support/ValueHandle.h"
 #include <map>
 
 #include "CGBuilder.h"
 
+namespace llvm {
+  class MDNode;
+}
+
 namespace clang {
   class VarDecl;
   class ObjCInterfaceDecl;
@@ -44,7 +49,7 @@ class CGDebugInfo {
 
   /// TypeCache - Cache of previously constructed Types.
   // FIXME: Eliminate this map.  Be careful of iterator invalidation.
-  std::map<void *, llvm::DIType> TypeCache;
+  std::map<void *, llvm::AssertingVH<llvm::MDNode> > TypeCache;
 
   bool BlockLiteralGenericSet;
   llvm::DIType BlockLiteralGeneric;