Add JSGraph::GetCachedNodes and NodeCache::GetCachedNodes. These routines are necessary in the dead…

src/compiler/node-cache.cc

Index: src/compiler/node-cache.cc
diff --git a/src/compiler/node-cache.cc b/src/compiler/node-cache.cc
index dbf61acc40fca7f0ef005947fb576503acedb84a..2049de526d23763debd5fda44062cbe8b743bb24 100644
--- a/src/compiler/node-cache.cc
+++ b/src/compiler/node-cache.cc
@@ -7,6 +7,7 @@
 #include <cstring>
 
 #include "src/zone.h"
+#include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
@@ -90,6 +91,15 @@ Node** NodeCache<Key, Hash, Pred>::Find(Zone* zone, Key key) {
 }
 
 
+template <typename Key, typename Hash, typename Pred>
+void NodeCache<Key, Hash, Pred>::GetCachedNodes(NodeVector* nodes) {
+  if (entries_) {
+    for (size_t i = 0; i < size_; i++) {
+      if (entries_[i].value_ != NULL) nodes->push_back(entries_[i].value_);
+    }
+  }
+}
+
 template class NodeCache<int64_t>;
 template class NodeCache<int32_t>;
 template class NodeCache<void*>;