More precompiled snapshotting.

runtime/vm/megamorphic_cache_table.cc

Index: runtime/vm/megamorphic_cache_table.cc
diff --git a/runtime/vm/megamorphic_cache_table.cc b/runtime/vm/megamorphic_cache_table.cc
index 3bbc5291fc9fcd925c96c623c6cba1e8adac1b44..42a214f10214bb3e2fd2c0924861ec11cba6fb15 100644
--- a/runtime/vm/megamorphic_cache_table.cc
+++ b/runtime/vm/megamorphic_cache_table.cc
@@ -102,4 +102,40 @@ void MegamorphicCacheTable::PrintSizes() {
             length_, size / 1024);
 }
 
+
+void MegamorphicCacheTable::ReadFrom(SnapshotReader* reader) {
+  ASSERT(reader->snapshot_code());
+
+  *reader->FunctionHandle() ^= reader->ReadObject();
+  miss_handler_function_ = reader->FunctionHandle()->raw();
+  miss_handler_code_ = reader->FunctionHandle()->CurrentCode();
+
+  capacity_ = reader->Read<intptr_t>();
+  length_ = capacity_;
+
+  table_ = reinterpret_cast<Entry*>(malloc(length_ * sizeof(*table_)));
+  for (intptr_t i = 0; i < length_; ++i) {
+    *reader->StringHandle() ^= reader->ReadObject();
+    table_[i].name = reader->StringHandle()->raw();
+    *reader->ArrayHandle() ^= reader->ReadObject();
+    table_[i].descriptor = reader->ArrayHandle()->raw();
+    *reader->MegamorphicCacheHandle() ^= reader->ReadObject();
+    table_[i].cache = reader->MegamorphicCacheHandle()->raw();
+  }
+}
+
+
+void MegamorphicCacheTable::WriteTo(SnapshotWriter* writer) {
+  ASSERT(writer->snapshot_code());
+
+  writer->WriteObject(miss_handler_function_);
+  writer->Write<intptr_t>(length_);
+  for (intptr_t i = 0; i < length_; i++) {
+    writer->WriteObject(table_[i].name);
+    writer->WriteObject(table_[i].descriptor);
+    writer->WriteObject(table_[i].cache);
+  }
+}
+
+
 }  // namespace dart