Revert^6 "Hash-based dex cache type array."

Fixed ImageWriter to write class table also if it contains
only boot class loader classes. Added a regression test and
added extra checks for debug-build to verify that dex cache
types from app image are also in the class table. Removed
some unnecessary debug output.

Test: 158-app-image-class-table
Bug: 34839984
Bug: 30627598
Bug: 34659969

This reverts commit 0b66d6174bf1f6023f9d36dda8538490b79c2e9f.

Change-Id: I6a747904940c6ebc297f4946feef99dc0adf930c
diff --git a/runtime/mirror/class.cc b/runtime/mirror/class.cc
index 9a9a5d8..eb2ec9b 100644
--- a/runtime/mirror/class.cc
+++ b/runtime/mirror/class.cc
@@ -951,7 +951,8 @@
     return interfaces->Get(idx);
   } else {
     dex::TypeIndex type_idx = klass->GetDirectInterfaceTypeIdx(idx);
-    ObjPtr<Class> interface = klass->GetDexCache()->GetResolvedType(type_idx);
+    ObjPtr<Class> interface = ClassLinker::LookupResolvedType(
+        type_idx, klass->GetDexCache(), klass->GetClassLoader());
     return interface;
   }
 }
diff --git a/runtime/mirror/dex_cache-inl.h b/runtime/mirror/dex_cache-inl.h
index 973c8ed..29bf6a0 100644
--- a/runtime/mirror/dex_cache-inl.h
+++ b/runtime/mirror/dex_cache-inl.h
@@ -41,14 +41,22 @@
   return Class::ComputeClassSize(true, vtable_entries, 0, 0, 0, 0, 0, pointer_size);
 }
 
-inline mirror::String* DexCache::GetResolvedString(dex::StringIndex string_idx) {
+inline uint32_t DexCache::StringSlotIndex(dex::StringIndex string_idx) {
   DCHECK_LT(string_idx.index_, GetDexFile()->NumStringIds());
-  return StringDexCachePair::Lookup(GetStrings(), string_idx.index_, NumStrings()).Read();
+  const uint32_t slot_idx = string_idx.index_ % kDexCacheStringCacheSize;
+  DCHECK_LT(slot_idx, NumStrings());
+  return slot_idx;
 }
 
-inline void DexCache::SetResolvedString(dex::StringIndex string_idx,
-                                        ObjPtr<mirror::String> resolved) {
-  StringDexCachePair::Assign(GetStrings(), string_idx.index_, resolved.Ptr(), NumStrings());
+inline String* DexCache::GetResolvedString(dex::StringIndex string_idx) {
+  return GetStrings()[StringSlotIndex(string_idx)].load(
+      std::memory_order_relaxed).GetObjectForIndex(string_idx.index_);
+}
+
+inline void DexCache::SetResolvedString(dex::StringIndex string_idx, ObjPtr<String> resolved) {
+  DCHECK(resolved != nullptr);
+  GetStrings()[StringSlotIndex(string_idx)].store(
+      StringDexCachePair(resolved, string_idx.index_), std::memory_order_relaxed);
   Runtime* const runtime = Runtime::Current();
   if (UNLIKELY(runtime->IsActiveTransaction())) {
     DCHECK(runtime->IsAotCompiler());
@@ -59,50 +67,70 @@
 }
 
 inline void DexCache::ClearString(dex::StringIndex string_idx) {
-  const uint32_t slot_idx = string_idx.index_ % NumStrings();
   DCHECK(Runtime::Current()->IsAotCompiler());
+  uint32_t slot_idx = StringSlotIndex(string_idx);
   StringDexCacheType* slot = &GetStrings()[slot_idx];
   // This is racy but should only be called from the transactional interpreter.
   if (slot->load(std::memory_order_relaxed).index == string_idx.index_) {
-    StringDexCachePair cleared(
-        nullptr,
-        StringDexCachePair::InvalidIndexForSlot(slot_idx));
+    StringDexCachePair cleared(nullptr, StringDexCachePair::InvalidIndexForSlot(slot_idx));
     slot->store(cleared, std::memory_order_relaxed);
   }
 }
 
+inline uint32_t DexCache::TypeSlotIndex(dex::TypeIndex type_idx) {
+  DCHECK_LT(type_idx.index_, GetDexFile()->NumTypeIds());
+  const uint32_t slot_idx = type_idx.index_ % kDexCacheTypeCacheSize;
+  DCHECK_LT(slot_idx, NumResolvedTypes());
+  return slot_idx;
+}
+
 inline Class* DexCache::GetResolvedType(dex::TypeIndex type_idx) {
   // It is theorized that a load acquire is not required since obtaining the resolved class will
   // always have an address dependency or a lock.
-  DCHECK_LT(type_idx.index_, NumResolvedTypes());
-  return GetResolvedTypes()[type_idx.index_].Read();
+  return GetResolvedTypes()[TypeSlotIndex(type_idx)].load(
+      std::memory_order_relaxed).GetObjectForIndex(type_idx.index_);
 }
 
 inline void DexCache::SetResolvedType(dex::TypeIndex type_idx, ObjPtr<Class> resolved) {
-  DCHECK_LT(type_idx.index_, NumResolvedTypes());  // NOTE: Unchecked, i.e. not throwing AIOOB.
+  DCHECK(resolved != nullptr);
   // TODO default transaction support.
   // Use a release store for SetResolvedType. This is done to prevent other threads from seeing a
   // class but not necessarily seeing the loaded members like the static fields array.
   // See b/32075261.
-  reinterpret_cast<Atomic<GcRoot<mirror::Class>>&>(GetResolvedTypes()[type_idx.index_]).
-      StoreRelease(GcRoot<Class>(resolved));
+  GetResolvedTypes()[TypeSlotIndex(type_idx)].store(
+      TypeDexCachePair(resolved, type_idx.index_), std::memory_order_release);
   // TODO: Fine-grained marking, so that we don't need to go through all arrays in full.
   Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(this);
 }
 
-inline MethodType* DexCache::GetResolvedMethodType(uint32_t proto_idx) {
+inline void DexCache::ClearResolvedType(dex::TypeIndex type_idx) {
+  DCHECK(Runtime::Current()->IsAotCompiler());
+  uint32_t slot_idx = TypeSlotIndex(type_idx);
+  TypeDexCacheType* slot = &GetResolvedTypes()[slot_idx];
+  // This is racy but should only be called from the single-threaded ImageWriter and tests.
+  if (slot->load(std::memory_order_relaxed).index == type_idx.index_) {
+    TypeDexCachePair cleared(nullptr, TypeDexCachePair::InvalidIndexForSlot(slot_idx));
+    slot->store(cleared, std::memory_order_relaxed);
+  }
+}
+
+inline uint32_t DexCache::MethodTypeSlotIndex(uint32_t proto_idx) {
   DCHECK(Runtime::Current()->IsMethodHandlesEnabled());
   DCHECK_LT(proto_idx, GetDexFile()->NumProtoIds());
-  return MethodTypeDexCachePair::Lookup(
-      GetResolvedMethodTypes(), proto_idx, NumResolvedMethodTypes()).Read();
+  const uint32_t slot_idx = proto_idx % kDexCacheMethodTypeCacheSize;
+  DCHECK_LT(slot_idx, NumResolvedMethodTypes());
+  return slot_idx;
+}
+
+inline MethodType* DexCache::GetResolvedMethodType(uint32_t proto_idx) {
+  return GetResolvedMethodTypes()[MethodTypeSlotIndex(proto_idx)].load(
+      std::memory_order_relaxed).GetObjectForIndex(proto_idx);
 }
 
 inline void DexCache::SetResolvedMethodType(uint32_t proto_idx, MethodType* resolved) {
-  DCHECK(Runtime::Current()->IsMethodHandlesEnabled());
-  DCHECK_LT(proto_idx, GetDexFile()->NumProtoIds());
-
-  MethodTypeDexCachePair::Assign(GetResolvedMethodTypes(), proto_idx, resolved,
-                                 NumResolvedMethodTypes());
+  DCHECK(resolved != nullptr);
+  GetResolvedMethodTypes()[MethodTypeSlotIndex(proto_idx)].store(
+      MethodTypeDexCachePair(resolved, proto_idx), std::memory_order_relaxed);
   // TODO: Fine-grained marking, so that we don't need to go through all arrays in full.
   Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(this);
 }
@@ -228,15 +256,13 @@
   VisitInstanceFieldsReferences<kVerifyFlags, kReadBarrierOption>(klass, visitor);
   // Visit arrays after.
   if (kVisitNativeRoots) {
-    VisitDexCachePairs<mirror::String, kReadBarrierOption, Visitor>(
+    VisitDexCachePairs<String, kReadBarrierOption, Visitor>(
         GetStrings(), NumStrings(), visitor);
 
-    GcRoot<mirror::Class>* resolved_types = GetResolvedTypes();
-    for (size_t i = 0, num_types = NumResolvedTypes(); i != num_types; ++i) {
-      visitor.VisitRootIfNonNull(resolved_types[i].AddressWithoutBarrier());
-    }
+    VisitDexCachePairs<Class, kReadBarrierOption, Visitor>(
+        GetResolvedTypes(), NumResolvedTypes(), visitor);
 
-    VisitDexCachePairs<mirror::MethodType, kReadBarrierOption, Visitor>(
+    VisitDexCachePairs<MethodType, kReadBarrierOption, Visitor>(
         GetResolvedMethodTypes(), NumResolvedMethodTypes(), visitor);
 
     GcRoot<mirror::CallSite>* resolved_call_sites = GetResolvedCallSites();
@@ -247,35 +273,37 @@
 }
 
 template <ReadBarrierOption kReadBarrierOption, typename Visitor>
-inline void DexCache::FixupStrings(mirror::StringDexCacheType* dest, const Visitor& visitor) {
-  mirror::StringDexCacheType* src = GetStrings();
+inline void DexCache::FixupStrings(StringDexCacheType* dest, const Visitor& visitor) {
+  StringDexCacheType* src = GetStrings();
   for (size_t i = 0, count = NumStrings(); i < count; ++i) {
     StringDexCachePair source = src[i].load(std::memory_order_relaxed);
-    mirror::String* ptr = source.object.Read<kReadBarrierOption>();
-    mirror::String* new_source = visitor(ptr);
+    String* ptr = source.object.Read<kReadBarrierOption>();
+    String* new_source = visitor(ptr);
     source.object = GcRoot<String>(new_source);
     dest[i].store(source, std::memory_order_relaxed);
   }
 }
 
 template <ReadBarrierOption kReadBarrierOption, typename Visitor>
-inline void DexCache::FixupResolvedTypes(GcRoot<mirror::Class>* dest, const Visitor& visitor) {
-  GcRoot<mirror::Class>* src = GetResolvedTypes();
+inline void DexCache::FixupResolvedTypes(TypeDexCacheType* dest, const Visitor& visitor) {
+  TypeDexCacheType* src = GetResolvedTypes();
   for (size_t i = 0, count = NumResolvedTypes(); i < count; ++i) {
-    mirror::Class* source = src[i].Read<kReadBarrierOption>();
-    mirror::Class* new_source = visitor(source);
-    dest[i] = GcRoot<mirror::Class>(new_source);
+    TypeDexCachePair source = src[i].load(std::memory_order_relaxed);
+    Class* ptr = source.object.Read<kReadBarrierOption>();
+    Class* new_source = visitor(ptr);
+    source.object = GcRoot<Class>(new_source);
+    dest[i].store(source, std::memory_order_relaxed);
   }
 }
 
 template <ReadBarrierOption kReadBarrierOption, typename Visitor>
-inline void DexCache::FixupResolvedMethodTypes(mirror::MethodTypeDexCacheType* dest,
+inline void DexCache::FixupResolvedMethodTypes(MethodTypeDexCacheType* dest,
                                                const Visitor& visitor) {
-  mirror::MethodTypeDexCacheType* src = GetResolvedMethodTypes();
+  MethodTypeDexCacheType* src = GetResolvedMethodTypes();
   for (size_t i = 0, count = NumResolvedMethodTypes(); i < count; ++i) {
     MethodTypeDexCachePair source = src[i].load(std::memory_order_relaxed);
-    mirror::MethodType* ptr = source.object.Read<kReadBarrierOption>();
-    mirror::MethodType* new_source = visitor(ptr);
+    MethodType* ptr = source.object.Read<kReadBarrierOption>();
+    MethodType* new_source = visitor(ptr);
     source.object = GcRoot<MethodType>(new_source);
     dest[i].store(source, std::memory_order_relaxed);
   }
diff --git a/runtime/mirror/dex_cache.cc b/runtime/mirror/dex_cache.cc
index 0f6acab..1b8b391 100644
--- a/runtime/mirror/dex_cache.cc
+++ b/runtime/mirror/dex_cache.cc
@@ -58,8 +58,8 @@
 
   mirror::StringDexCacheType* strings = (dex_file->NumStringIds() == 0u) ? nullptr :
       reinterpret_cast<mirror::StringDexCacheType*>(raw_arrays + layout.StringsOffset());
-  GcRoot<mirror::Class>* types = (dex_file->NumTypeIds() == 0u) ? nullptr :
-      reinterpret_cast<GcRoot<mirror::Class>*>(raw_arrays + layout.TypesOffset());
+  mirror::TypeDexCacheType* types = (dex_file->NumTypeIds() == 0u) ? nullptr :
+      reinterpret_cast<mirror::TypeDexCacheType*>(raw_arrays + layout.TypesOffset());
   ArtMethod** methods = (dex_file->NumMethodIds() == 0u) ? nullptr :
       reinterpret_cast<ArtMethod**>(raw_arrays + layout.MethodsOffset());
   ArtField** fields = (dex_file->NumFieldIds() == 0u) ? nullptr :
@@ -69,6 +69,10 @@
   if (dex_file->NumStringIds() < num_strings) {
     num_strings = dex_file->NumStringIds();
   }
+  size_t num_types = mirror::DexCache::kDexCacheTypeCacheSize;
+  if (dex_file->NumTypeIds() < num_types) {
+    num_types = dex_file->NumTypeIds();
+  }
 
   // Note that we allocate the method type dex caches regardless of this flag,
   // and we make sure here that they're not used by the runtime. This is in the
@@ -108,8 +112,9 @@
       CHECK_EQ(strings[i].load(std::memory_order_relaxed).index, 0u);
       CHECK(strings[i].load(std::memory_order_relaxed).object.IsNull());
     }
-    for (size_t i = 0; i < dex_file->NumTypeIds(); ++i) {
-      CHECK(types[i].IsNull());
+    for (size_t i = 0; i < num_types; ++i) {
+      CHECK_EQ(types[i].load(std::memory_order_relaxed).index, 0u);
+      CHECK(types[i].load(std::memory_order_relaxed).object.IsNull());
     }
     for (size_t i = 0; i < dex_file->NumMethodIds(); ++i) {
       CHECK(mirror::DexCache::GetElementPtrSize(methods, i, image_pointer_size) == nullptr);
@@ -128,6 +133,9 @@
   if (strings != nullptr) {
     mirror::StringDexCachePair::Initialize(strings);
   }
+  if (types != nullptr) {
+    mirror::TypeDexCachePair::Initialize(types);
+  }
   if (method_types != nullptr) {
     mirror::MethodTypeDexCachePair::Initialize(method_types);
   }
@@ -136,7 +144,7 @@
                   strings,
                   num_strings,
                   types,
-                  dex_file->NumTypeIds(),
+                  num_types,
                   methods,
                   dex_file->NumMethodIds(),
                   fields,
@@ -152,7 +160,7 @@
                     ObjPtr<String> location,
                     StringDexCacheType* strings,
                     uint32_t num_strings,
-                    GcRoot<Class>* resolved_types,
+                    TypeDexCacheType* resolved_types,
                     uint32_t num_resolved_types,
                     ArtMethod** resolved_methods,
                     uint32_t num_resolved_methods,
diff --git a/runtime/mirror/dex_cache.h b/runtime/mirror/dex_cache.h
index 10bb5aa..0579198 100644
--- a/runtime/mirror/dex_cache.h
+++ b/runtime/mirror/dex_cache.h
@@ -18,14 +18,14 @@
 #define ART_RUNTIME_MIRROR_DEX_CACHE_H_
 
 #include "array.h"
-#include "art_field.h"
-#include "class.h"
+#include "base/bit_utils.h"
 #include "dex_file_types.h"
 #include "object.h"
 #include "object_array.h"
 
 namespace art {
 
+class ArtField;
 class ArtMethod;
 struct DexCacheOffsets;
 class DexFile;
@@ -37,6 +37,7 @@
 namespace mirror {
 
 class CallSite;
+class Class;
 class MethodType;
 class String;
 
@@ -61,7 +62,7 @@
   // it's always non-null if the id branch succeeds (except for the 0th id).
   // Set the initial state for the 0th entry to be {0,1} which is guaranteed to fail
   // the lookup id == stored id branch.
-  DexCachePair(T* object, uint32_t index)
+  DexCachePair(ObjPtr<T> object, uint32_t index)
       : object(object),
         index(index) {}
   DexCachePair() = default;
@@ -75,39 +76,28 @@
     dex_cache[0].store(first_elem, std::memory_order_relaxed);
   }
 
-  static GcRoot<T> Lookup(std::atomic<DexCachePair<T>>* dex_cache,
-                          uint32_t idx,
-                          uint32_t cache_size) {
-    DCHECK_NE(cache_size, 0u);
-    DexCachePair<T> element = dex_cache[idx % cache_size].load(std::memory_order_relaxed);
-    if (idx != element.index) {
-      return GcRoot<T>(nullptr);
-    }
-
-    DCHECK(!element.object.IsNull());
-    return element.object;
-  }
-
-  static void Assign(std::atomic<DexCachePair<T>>* dex_cache,
-                     uint32_t idx,
-                     T* object,
-                     uint32_t cache_size) {
-    DCHECK_LT(idx % cache_size, cache_size);
-    dex_cache[idx % cache_size].store(
-        DexCachePair<T>(object, idx), std::memory_order_relaxed);
-  }
-
   static uint32_t InvalidIndexForSlot(uint32_t slot) {
     // Since the cache size is a power of two, 0 will always map to slot 0.
     // Use 1 for slot 0 and 0 for all other slots.
     return (slot == 0) ? 1u : 0u;
   }
+
+  T* GetObjectForIndex(uint32_t idx) REQUIRES_SHARED(Locks::mutator_lock_) {
+    if (idx != index) {
+      return nullptr;
+    }
+    DCHECK(!object.IsNull());
+    return object.Read();
+  }
 };
 
-using StringDexCachePair = DexCachePair<mirror::String>;
+using TypeDexCachePair = DexCachePair<Class>;
+using TypeDexCacheType = std::atomic<TypeDexCachePair>;
+
+using StringDexCachePair = DexCachePair<String>;
 using StringDexCacheType = std::atomic<StringDexCachePair>;
 
-using MethodTypeDexCachePair = DexCachePair<mirror::MethodType>;
+using MethodTypeDexCachePair = DexCachePair<MethodType>;
 using MethodTypeDexCacheType = std::atomic<MethodTypeDexCachePair>;
 
 // C++ mirror of java.lang.DexCache.
@@ -116,6 +106,11 @@
   // Size of java.lang.DexCache.class.
   static uint32_t ClassSize(PointerSize pointer_size);
 
+  // Size of type dex cache. Needs to be a power of 2 for entrypoint assumptions to hold.
+  static constexpr size_t kDexCacheTypeCacheSize = 1024;
+  static_assert(IsPowerOfTwo(kDexCacheTypeCacheSize),
+                "Type dex cache size is not a power of 2.");
+
   // Size of string dex cache. Needs to be a power of 2 for entrypoint assumptions to hold.
   static constexpr size_t kDexCacheStringCacheSize = 1024;
   static_assert(IsPowerOfTwo(kDexCacheStringCacheSize),
@@ -127,6 +122,10 @@
   static_assert(IsPowerOfTwo(kDexCacheMethodTypeCacheSize),
                 "MethodType dex cache size is not a power of 2.");
 
+  static constexpr size_t StaticTypeSize() {
+    return kDexCacheTypeCacheSize;
+  }
+
   static constexpr size_t StaticStringSize() {
     return kDexCacheStringCacheSize;
   }
@@ -157,7 +156,7 @@
       REQUIRES_SHARED(Locks::mutator_lock_);
 
   template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor>
-  void FixupResolvedTypes(GcRoot<mirror::Class>* dest, const Visitor& visitor)
+  void FixupResolvedTypes(TypeDexCacheType* dest, const Visitor& visitor)
       REQUIRES_SHARED(Locks::mutator_lock_);
 
   template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier, typename Visitor>
@@ -224,7 +223,7 @@
     return OFFSET_OF_OBJECT_MEMBER(DexCache, num_resolved_call_sites_);
   }
 
-  mirror::String* GetResolvedString(dex::StringIndex string_idx) ALWAYS_INLINE
+  String* GetResolvedString(dex::StringIndex string_idx) ALWAYS_INLINE
       REQUIRES_SHARED(Locks::mutator_lock_);
 
   void SetResolvedString(dex::StringIndex string_idx, ObjPtr<mirror::String> resolved) ALWAYS_INLINE
@@ -239,6 +238,8 @@
   void SetResolvedType(dex::TypeIndex type_idx, ObjPtr<Class> resolved)
       REQUIRES_SHARED(Locks::mutator_lock_);
 
+  void ClearResolvedType(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+
   ALWAYS_INLINE ArtMethod* GetResolvedMethod(uint32_t method_idx, PointerSize ptr_size)
       REQUIRES_SHARED(Locks::mutator_lock_);
 
@@ -278,11 +279,11 @@
     SetFieldPtr<false>(StringsOffset(), strings);
   }
 
-  GcRoot<Class>* GetResolvedTypes() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) {
-    return GetFieldPtr<GcRoot<Class>*>(ResolvedTypesOffset());
+  TypeDexCacheType* GetResolvedTypes() ALWAYS_INLINE REQUIRES_SHARED(Locks::mutator_lock_) {
+    return GetFieldPtr<TypeDexCacheType*>(ResolvedTypesOffset());
   }
 
-  void SetResolvedTypes(GcRoot<Class>* resolved_types)
+  void SetResolvedTypes(TypeDexCacheType* resolved_types)
       ALWAYS_INLINE
       REQUIRES_SHARED(Locks::mutator_lock_) {
     SetFieldPtr<false>(ResolvedTypesOffset(), resolved_types);
@@ -363,7 +364,7 @@
     SetFieldPtr<false>(OFFSET_OF_OBJECT_MEMBER(DexCache, dex_file_), dex_file);
   }
 
-  void SetLocation(ObjPtr<mirror::String> location) REQUIRES_SHARED(Locks::mutator_lock_);
+  void SetLocation(ObjPtr<String> location) REQUIRES_SHARED(Locks::mutator_lock_);
 
   // NOTE: Get/SetElementPtrSize() are intended for working with ArtMethod** and ArtField**
   // provided by GetResolvedMethods/Fields() and ArtMethod::GetDexCacheResolvedMethods(),
@@ -380,7 +381,7 @@
             ObjPtr<String> location,
             StringDexCacheType* strings,
             uint32_t num_strings,
-            GcRoot<Class>* resolved_types,
+            TypeDexCacheType* resolved_types,
             uint32_t num_resolved_types,
             ArtMethod** resolved_methods,
             uint32_t num_resolved_methods,
@@ -393,12 +394,16 @@
             PointerSize pointer_size)
       REQUIRES_SHARED(Locks::mutator_lock_);
 
+  uint32_t StringSlotIndex(dex::StringIndex string_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+  uint32_t TypeSlotIndex(dex::TypeIndex type_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+  uint32_t MethodTypeSlotIndex(uint32_t proto_idx) REQUIRES_SHARED(Locks::mutator_lock_);
+
   // Visit instance fields of the dex cache as well as its associated arrays.
   template <bool kVisitNativeRoots,
             VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
             ReadBarrierOption kReadBarrierOption = kWithReadBarrier,
             typename Visitor>
-  void VisitReferences(ObjPtr<mirror::Class> klass, const Visitor& visitor)
+  void VisitReferences(ObjPtr<Class> klass, const Visitor& visitor)
       REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(Locks::heap_bitmap_lock_);
 
   HeapReference<Object> dex_;
@@ -410,7 +415,7 @@
   uint64_t resolved_method_types_;  // std::atomic<MethodTypeDexCachePair>* array with
                                     // num_resolved_method_types_ elements.
   uint64_t resolved_methods_;       // ArtMethod*, array with num_resolved_methods_ elements.
-  uint64_t resolved_types_;         // GcRoot<Class>*, array with num_resolved_types_ elements.
+  uint64_t resolved_types_;         // TypeDexCacheType*, array with num_resolved_types_ elements.
   uint64_t strings_;                // std::atomic<StringDexCachePair>*, array with num_strings_
                                     // elements.
 
diff --git a/runtime/mirror/dex_cache_test.cc b/runtime/mirror/dex_cache_test.cc
index 5a2ab71..ef0aaaa 100644
--- a/runtime/mirror/dex_cache_test.cc
+++ b/runtime/mirror/dex_cache_test.cc
@@ -51,7 +51,8 @@
 
   EXPECT_TRUE(dex_cache->StaticStringSize() == dex_cache->NumStrings()
       || java_lang_dex_file_->NumStringIds() == dex_cache->NumStrings());
-  EXPECT_EQ(java_lang_dex_file_->NumTypeIds(),   dex_cache->NumResolvedTypes());
+  EXPECT_TRUE(dex_cache->StaticTypeSize() == dex_cache->NumResolvedTypes()
+      || java_lang_dex_file_->NumTypeIds() == dex_cache->NumResolvedTypes());
   EXPECT_EQ(java_lang_dex_file_->NumMethodIds(), dex_cache->NumResolvedMethods());
   EXPECT_EQ(java_lang_dex_file_->NumFieldIds(),  dex_cache->NumResolvedFields());
   EXPECT_TRUE(dex_cache->StaticMethodTypeSize() == dex_cache->NumResolvedMethodTypes()