Sort class IDs before training AppJIT snapshots

runtime/vm/class_finalizer.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_CLASS_FINALIZER_H_
 #define RUNTIME_VM_CLASS_FINALIZER_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 #include "vm/object.h"
@@ skipping 51 matching lines @@
   // string and its arguments.
   static void FinalizeMalboundedType(const Error& prev_error,
                                      const Script& script,
                                      const AbstractType& type,
                                      const char* format,
                                      ...) PRINTF_ATTRIBUTE(4, 5);
 
   // Return false if we still have classes pending to be finalized.
   static bool AllClassesFinalized();
 
+  // Useful for sorting classes to make dispatch faster.
+  static void SortClasses();
+  static void RemapClassIds(intptr_t* old_to_new_cid);
+  static void RehashTypes();
+  static void ClearAllCode();
+
   // Return whether processing pending classes (ObjectStore::pending_classes_)
   // failed. The function returns true if the processing was successful.
   // If processing fails, an error message is set in the sticky error field
   // in the object store.
   static bool ProcessPendingClasses(bool from_kernel = false);
 
   // Finalize the types appearing in the declaration of class 'cls', i.e. its
   // type parameters and their upper bounds, its super type and interfaces.
   // Note that the fields and functions have not been parsed yet (unless cls
   // is an anonymous top level class).
@@ skipping 95 matching lines @@
                            ...) PRINTF_ATTRIBUTE(4, 5);
 
   // Verify implicit offsets recorded in the VM for direct access to fields of
   // Dart instances (e.g: _TypedListView, _ByteDataView).
   static void VerifyImplicitFieldOffsets();
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_CLASS_FINALIZER_H_