Move dexCacheStrings from ArtMethod to ArtClass

Saves ram.

Bug: 17643507

(cherry picked from commit b9a5206b91a656c091e7055ff70e4eed2c76b8b1)

Change-Id: Ic446a8466eb877ddf680e1d312ae94df028f9e73

2 files changed, 4 insertions, 10 deletions

diff --git a/libart/src/main/java/java/lang/Class.java b/libart/src/main/java/java/lang/Class.java
index a833f6c..d766385 100644
--- a/libart/src/main/java/java/lang/Class.java
+++ b/libart/src/main/java/java/lang/Class.java
@@ -138,6 +138,9 @@ public final class Class<T> implements Serializable, AnnotatedElement, GenericDe
      */
     private transient DexCache dexCache;
 
+    /** Short-cut to dexCache.strings */
+    private transient String[] dexCacheStrings;
+
     /** static, private, and &lt;init&gt; methods. */
     private transient ArtMethod[] directMethods;
 
@@ -453,7 +456,6 @@ public final class Class<T> implements Serializable, AnnotatedElement, GenericDe
      * @hide
      */
     public String getDexCacheString(Dex dex, int dexStringIndex) {
-        String[] dexCacheStrings = dexCache.strings;
         String s = dexCacheStrings[dexStringIndex];
         if (s == null) {
             s = dex.strings().get(dexStringIndex).intern();
diff --git a/libart/src/main/java/java/lang/reflect/ArtMethod.java b/libart/src/main/java/java/lang/reflect/ArtMethod.java
index 07cc30c..95e03c6 100644
--- a/libart/src/main/java/java/lang/reflect/ArtMethod.java
+++ b/libart/src/main/java/java/lang/reflect/ArtMethod.java
@@ -53,9 +53,6 @@ public final class ArtMethod {
     /** Short-cut to declaringClass.dexCache.resolvedTypes */
     /* package */ Class<?>[] dexCacheResolvedTypes;
 
-    /** Short-cut to declaringClass.dexCache.strings */
-    private String[] dexCacheStrings;
-
     /** Bits encoding access (e.g. public, private) as well as other runtime specific flags */
     private int accessFlags;
 
@@ -180,12 +177,7 @@ public final class ArtMethod {
      * Method we can avoid one indirection.
      */
     private String getDexCacheString(Dex dex, int dexStringIndex) {
-        String s = (String) dexCacheStrings[dexStringIndex];
-        if (s == null) {
-            s = dex.strings().get(dexStringIndex).intern();
-            dexCacheStrings[dexStringIndex] = s;
-        }
-        return s;
+        return declaringClass.getDexCacheString(dex, dexStringIndex);
     }
 
     /**