commit 5ffa0780a2738eed1f86efb967ea99badcbd5d9c
author Mathieu Chartier <mathieuc@google.com> Wed Jul 27 10:45:47 2016 -0700
committer Mathieu Chartier <mathieuc@google.com> Wed Jul 27 13:57:01 2016 -0700
tree ee3a4bde21aa03ad564c84877b3cbab3048e6cfd
parent 93afc5f20a23ece78d6d6e506ed75775b8ef2113

Reduce unnecessary read barriers in GC

Removed read barrier from IsUnprocessed, DequeuePendingReference,
EnqueueReference, and a few other places.

Hard to tell if GC time goes down.

EAAC:
Before GC slow path count: 254857
After GC slow path count: 1005

Bug: 30162165
Bug: 12687968

Test: test-art-host, volantis boot with CC

Change-Id: Ic2add3a9b1e1d7561b0b167f2218b10f8dbff76c

runtime/mirror/class.h

diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index 32ed337..3ba9e1a 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -471,7 +471,7 @@
 
   template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
   size_t GetComponentSize() SHARED_REQUIRES(Locks::mutator_lock_) {
-    return 1U << GetComponentSizeShift();
+    return 1U << GetComponentSizeShift<kReadBarrierOption>();
   }
 
   template<ReadBarrierOption kReadBarrierOption = kWithReadBarrier>