Initial isolate reload support

runtime/vm/flow_graph_compiler_arm.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_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 427 matching lines @@
     TokenPosition token_pos,
     const Class& type_class,
     Label* is_instance_lbl,
     Label* is_not_instance_lbl) {
   __ Comment("Subtype1TestCacheLookup");
   const Register kInstanceReg = R0;
   __ LoadClass(R1, kInstanceReg, R2);
   // R1: instance class.
   // Check immediate superclass equality.
   __ ldr(R2, FieldAddress(R1, Class::super_type_offset()));
-  __ ldr(R2, FieldAddress(R2, Type::type_class_offset()));
-  __ CompareObject(R2, type_class);
+  __ ldr(R2, FieldAddress(R2, Type::type_class_id_offset()));
+  __ CompareImmediate(R2, Smi::RawValue(type_class.id()));
   __ b(is_instance_lbl, EQ);
 
   const Register kTypeArgumentsReg = kNoRegister;
   const Register kTempReg = kNoRegister;
   return GenerateCallSubtypeTestStub(kTestTypeOneArg,
                                      kInstanceReg,
                                      kTypeArgumentsReg,
                                      kTempReg,
                                      is_instance_lbl,
                                      is_not_instance_lbl);
@@ skipping 1540 matching lines @@
   DRegister dreg = EvenDRegisterOf(reg);
   __ vldrd(dreg, Address(SP, kDoubleSize, Address::PostIndex));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM