Implements write barrier on MIPS.

runtime/vm/assembler_test.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/assembler.h"
 #include "vm/globals.h"
 #include "vm/os.h"
 #include "vm/simulator.h"
 #include "vm/unit_test.h"
 #include "vm/virtual_memory.h"
 
 namespace dart {
 
-#if defined(TARGET_ARCH_IA32) ||                                               \
-    defined(TARGET_ARCH_X64) ||                                                \
-    defined(TARGET_ARCH_ARM)
-
 ASSEMBLER_TEST_EXTERN(StoreIntoObject);
 
 ASSEMBLER_TEST_RUN(StoreIntoObject, test) {
 #if defined(USING_SIMULATOR)
 #define test_code(ctx, value, growable_array)                                  \
   Simulator::Current()->Call(                                                  \
       bit_cast<int32_t, uword>(test->entry()),                                 \
       reinterpret_cast<int32_t>(ctx),                                          \
       reinterpret_cast<int32_t>(value),                                        \
       reinterpret_cast<int32_t>(growable_array),                               \
@@ skipping 48 matching lines @@
   EXPECT(!Isolate::Current()->store_buffer_block()->Contains(
       reinterpret_cast<uword>(grow_new_array.raw())));
 
   // Store an old object into the new object.
   test_code(ctx.raw(), old_array.raw(), grow_new_array.raw());
   EXPECT(old_array.raw() == grow_new_array.data());
   EXPECT(!Isolate::Current()->store_buffer_block()->Contains(
       reinterpret_cast<uword>(grow_new_array.raw())));
 }
 
-#endif  // TARGET_ARCH_IA32 || TARGET_ARCH_X64 || TARGET_ARCH_ARM
-
 }  // namespace dart