Track which entries in the ObjectPool are native entries, and reset them when loading a precompiled…

runtime/vm/assembler.cc

Index: runtime/vm/assembler.cc
diff --git a/runtime/vm/assembler.cc b/runtime/vm/assembler.cc
index 489f09040ded130cb94e424b5a49e74d547b0b8d..5fe8c2f81f634d5830574d0ee42807bec8d1c50a 100644
--- a/runtime/vm/assembler.cc
+++ b/runtime/vm/assembler.cc
@@ -306,6 +306,14 @@ intptr_t ObjectPoolWrapper::FindExternalLabel(const ExternalLabel* label,
 }
 
 
+intptr_t ObjectPoolWrapper::FindNativeEntry(const ExternalLabel* label,
+                                            Patchability patchable) {
+  return FindObject(ObjectPool::Entry(label->address(),
+                                      ObjectPool::kNativeEntry),
+                    patchable);
+}
+
+
 RawObjectPool* ObjectPoolWrapper::MakeObjectPool() {
   intptr_t len = object_pool_.length();
   if (len == 0) {