Initial isolate reload support

runtime/vm/flow_graph_compiler_ia32.cc

 // Copyright (c) 2013, 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/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 428 matching lines @@
     TokenPosition token_pos,
     const Class& type_class,
     Label* is_instance_lbl,
     Label* is_not_instance_lbl) {
   __ Comment("Subtype1TestCacheLookup");
   const Register kInstanceReg = EAX;
   __ LoadClass(ECX, kInstanceReg, EDI);
   // ECX: instance class.
   // Check immediate superclass equality.
   __ movl(EDI, FieldAddress(ECX, Class::super_type_offset()));
-  __ movl(EDI, FieldAddress(EDI, Type::type_class_offset()));
-  __ CompareObject(EDI, type_class);
+  __ movl(EDI, FieldAddress(EDI, Type::type_class_id_offset()));
+  __ cmpl(EDI, Immediate(Smi::RawValue(type_class.id())));
   __ j(EQUAL, is_instance_lbl);
 
   const Register kTypeArgumentsReg = kNoRegister;
   const Register kTempReg = EDI;
   return GenerateCallSubtypeTestStub(kTestTypeOneArg,
                                      kInstanceReg,
                                      kTypeArgumentsReg,
                                      kTempReg,
                                      is_instance_lbl,
                                      is_not_instance_lbl);
@@ skipping 1410 matching lines @@
   __ movups(reg, Address(ESP, 0));
   __ addl(ESP, Immediate(kFpuRegisterSize));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32