From 5729c5848c74a2413cc1d32a5f3c746aff5d9ccc Mon Sep 17 00:00:00 2001
From: David Blaikie <dblaikie@gmail.com>
Date: Wed, 7 Dec 2011 06:44:23 +0000
Subject: Adding missing anchor to DATDeltaAlgorithm.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146025 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ADT/DAGDeltaAlgorithm.h | 1 +
 lib/Support/DAGDeltaAlgorithm.cpp    | 3 +++
 2 files changed, 4 insertions(+)

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;
diff --git a/lib/Support/DAGDeltaAlgorithm.cpp b/lib/Support/DAGDeltaAlgorithm.cpp
index 8145664..1e89c6a 100644
--- a/lib/Support/DAGDeltaAlgorithm.cpp
+++ b/lib/Support/DAGDeltaAlgorithm.cpp
@@ -350,6 +350,9 @@ DAGDeltaAlgorithmImpl::Run() {
   return Required;
 }
 
+void DAGDeltaAlgorithm::anchor() {
+}
+
 DAGDeltaAlgorithm::changeset_ty
 DAGDeltaAlgorithm::Run(const changeset_ty &Changes,
                        const std::vector<edge_ty> &Dependencies) {
-- 
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