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-rw-r--r--include/llvm/ADT/DAGDeltaAlgorithm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/llvm/ADT/DAGDeltaAlgorithm.h b/include/llvm/ADT/DAGDeltaAlgorithm.h
index 99ed15c..e502ac4 100644
--- a/include/llvm/ADT/DAGDeltaAlgorithm.h
+++ b/include/llvm/ADT/DAGDeltaAlgorithm.h
@@ -36,6 +36,7 @@ namespace llvm {
/// for more information on the properties which the predicate function itself
/// should satisfy.
class DAGDeltaAlgorithm {
+ virtual void anchor();
public:
typedef unsigned change_ty;
typedef std::pair<change_ty, change_ty> edge_ty;