Port irregexp bytecode compiler and interpreter from V8 r24065.

runtime/vm/raw_object_snapshot.cc

 // 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.
 
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
 #include "vm/visitor.h"
@@ skipping 2962 matching lines @@
   reader->AddBackRef(object_id, &regex, kIsDeserialized);
 
   // Set the object tags.
   regex.set_tags(tags);
 
   // Read and Set all the other fields.
   regex.StoreSmi(&regex.raw_ptr()->num_bracket_expressions_,
                  reader->ReadAsSmi());
   *reader->StringHandle() ^= reader->ReadObjectImpl();
   regex.set_pattern(*reader->StringHandle());
+  regex.StoreNonPointer(&regex.raw_ptr()->num_registers_,
+                        reader->Read<int32_t>());
   regex.StoreNonPointer(&regex.raw_ptr()->type_flags_,
                         reader->Read<int8_t>());
 
   // TODO(18854): Need to implement a way of recreating the irrexp functions.
   return regex.raw();
 }
 
 
 void RawJSRegExp::WriteTo(SnapshotWriter* writer,
                           intptr_t object_id,
                           Snapshot::Kind kind) {
   ASSERT(writer != NULL);
   ASSERT(kind == Snapshot::kMessage);
 
   // Write out the serialization header value for this object.
   writer->WriteInlinedObjectHeader(object_id);
 
   // Write out the class and tags information.
   writer->WriteIndexedObject(kJSRegExpCid);
   writer->WriteTags(writer->GetObjectTags(this));
 
   // Write out all the other fields.
   writer->Write<RawObject*>(ptr()->num_bracket_expressions_);
   writer->WriteObjectImpl(ptr()->pattern_);
+  writer->Write<int32_t>(ptr()->num_registers_);
   writer->Write<int8_t>(ptr()->type_flags_);
 }
 
 
 RawWeakProperty* WeakProperty::ReadFrom(SnapshotReader* reader,
                                         intptr_t object_id,
                                         intptr_t tags,
                                         Snapshot::Kind kind) {
   ASSERT(reader != NULL);
 
@@ skipping 77 matching lines @@
     // We do not allow objects with native fields in an isolate message.
     writer->SetWriteException(Exceptions::kArgument,
                               "Illegal argument in isolate message"
                               " : (object is a UserTag)");
   } else {
     UNREACHABLE();
   }
 }
 
 }  // namespace dart