Cache field lowering info in mir_graph.

Change-Id: I9f9d76e3ae6c31e88bdf3f59820d31a625da020f
diff --git a/compiler/dex/pass_driver.cc b/compiler/dex/pass_driver.cc
index b60f296..256bcb1 100644
--- a/compiler/dex/pass_driver.cc
+++ b/compiler/dex/pass_driver.cc
@@ -91,6 +91,7 @@
    *   - This is not yet an issue: no current pass would require it.
    */
   static const Pass* const passes[] = {
+      GetPassInstance<CacheFieldLoweringInfo>(),
       GetPassInstance<CodeLayout>(),
       GetPassInstance<SSATransformation>(),
       GetPassInstance<ConstantPropagation>(),