First optimization in new compiler: simple GVN.

Change-Id: Ibe0efa4e84fd020a53ded310a92e0b4363f91b12
diff --git a/build/Android.gtest.mk b/build/Android.gtest.mk
index 3f58527..d93d6dc 100644
--- a/build/Android.gtest.mk
+++ b/build/Android.gtest.mk
@@ -146,6 +146,7 @@
   compiler/optimizing/find_loops_test.cc \
   compiler/optimizing/graph_checker_test.cc \
   compiler/optimizing/graph_test.cc \
+  compiler/optimizing/gvn_test.cc \
   compiler/optimizing/linearize_test.cc \
   compiler/optimizing/liveness_test.cc \
   compiler/optimizing/live_interval_test.cc \