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

runtime/vm/assembler_arm64.cc

Index: runtime/vm/assembler_arm64.cc
diff --git a/runtime/vm/assembler_arm64.cc b/runtime/vm/assembler_arm64.cc
index 7ea74a2f0ce72435bd16f5dfe76b3cd5f354cbb6..16220b4a0d3ca7f7156384bc936067deda162268 100644
--- a/runtime/vm/assembler_arm64.cc
+++ b/runtime/vm/assembler_arm64.cc
@@ -396,6 +396,14 @@ void Assembler::LoadExternalLabel(Register dst, const ExternalLabel* label) {
 }
 
 
+void Assembler::LoadNativeEntry(Register dst,
+                                const ExternalLabel* label) {
+  const int32_t offset = ObjectPool::element_offset(
+      object_pool_wrapper_.FindNativeEntry(label, kNotPatchable));
+  LoadWordFromPoolOffset(dst, offset);
+}
+
+
 void Assembler::LoadExternalLabelFixed(Register dst,
                                        const ExternalLabel* label,
                                        Patchability patchable) {