Add write barriers to optimizing compiler.

Change-Id: I43a40954757f51d49782e70bc28f7c314d6dbe17
diff --git a/build/Android.gtest.mk b/build/Android.gtest.mk
index ee51fcd..d75644d 100644
--- a/build/Android.gtest.mk
+++ b/build/Android.gtest.mk
@@ -171,6 +171,7 @@
 
 COMPILER_GTEST_HOST_SRC_FILES := \
   $(COMPILER_GTEST_COMMON_SRC_FILES) \
+  compiler/utils//assembler_thumb_test.cc \
   compiler/utils/x86/assembler_x86_test.cc \
   compiler/utils/x86_64/assembler_x86_64_test.cc