Move dexCacheStrings from ArtMethod to Class

Adds one load for const strings which are not direct.

Saves >= 60KB of memory avg per app.
Image size: -350KB.

Bug: 17643507
Change-Id: I2d1a3253d9de09682be9bc6b420a29513d592cc8

(cherry picked from commit f521f423b66e952f746885dd9f6cf8ef2788955d)

1 files changed, 10 insertions, 0 deletions

diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index 82425b5..a77972e 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -1020,6 +1020,13 @@ class MANAGED Class FINAL : public Object {
   bool GetSlowPathEnabled() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   void SetSlowPath(bool enabled) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
+  ObjectArray<String>* GetDexCacheStrings() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  void SetDexCacheStrings(ObjectArray<String>* new_dex_cache_strings)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  static MemberOffset DexCacheStringsOffset() {
+    return OFFSET_OF_OBJECT_MEMBER(Class, dex_cache_strings_);
+  }
+
   // Used to initialize a class in the allocation code path to ensure it is guarded by a StoreStore
   // fence.
   class InitializeClassVisitor {
@@ -1065,6 +1072,9 @@ class MANAGED Class FINAL : public Object {
   // runtime such as arrays and primitive classes).
   HeapReference<DexCache> dex_cache_;
 
+  // Short cuts to dex_cache_ member for fast compiled code access.
+  HeapReference<ObjectArray<String>> dex_cache_strings_;
+
   // static, private, and <init> methods
   HeapReference<ObjectArray<ArtMethod>> direct_methods_;