diff --git a/compiler/driver/compiler_driver.h b/compiler/driver/compiler_driver.h
index b756244..24b6f17 100644
--- a/compiler/driver/compiler_driver.h
+++ b/compiler/driver/compiler_driver.h
@@ -45,6 +45,10 @@
 
 namespace art {
 
+namespace mirror {
+class DexCache;
+}  // namespace mirror
+
 namespace verifier {
 class MethodVerifier;
 }  // namespace verifier
@@ -107,8 +111,11 @@
                   TimingLogger* timings)
       LOCKS_EXCLUDED(Locks::mutator_lock_);
 
+  CompiledMethod* CompileMethod(Thread* self, mirror::ArtMethod*)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) WARN_UNUSED;
+
   // Compile a single Method.
-  void CompileOne(mirror::ArtMethod* method, TimingLogger* timings)
+  void CompileOne(Thread* self, mirror::ArtMethod* method, TimingLogger* timings)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   VerificationResults* GetVerificationResults() const {
@@ -172,6 +179,9 @@
   size_t GetNonRelativeLinkerPatchCount() const
       LOCKS_EXCLUDED(compiled_methods_lock_);
 
+  // Remove and delete a compiled method.
+  void RemoveCompiledMethod(const MethodReference& method_ref);
+
   void AddRequiresConstructorBarrier(Thread* self, const DexFile* dex_file,
                                      uint16_t class_def_index);
   bool RequiresConstructorBarrier(Thread* self, const DexFile* dex_file, uint16_t class_def_index);
@@ -226,6 +236,13 @@
       uint32_t field_idx, bool is_static)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
+  // Resolve a field with a given dex file.
+  mirror::ArtField* ResolveFieldWithDexFile(
+      const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
+      Handle<mirror::ClassLoader> class_loader, const DexFile* dex_file,
+      uint32_t field_idx, bool is_static)
+    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
   // Get declaration location of a resolved field.
   void GetResolvedFieldDexFileLocation(
       mirror::ArtField* resolved_field, const DexFile** declaring_dex_file,
@@ -235,6 +252,10 @@
   bool IsFieldVolatile(mirror::ArtField* field) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   MemberOffset GetFieldOffset(mirror::ArtField* field) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
+  // Find a dex cache for a dex file.
+  inline mirror::DexCache* FindDexCache(const DexFile* dex_file)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
   // Can we fast-path an IGET/IPUT access to an instance field? If yes, compute the field offset.
   std::pair<bool, bool> IsFastInstanceField(
       mirror::DexCache* dex_cache, mirror::Class* referrer_class,
@@ -261,7 +282,7 @@
   mirror::ArtMethod* ResolveMethod(
       ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache,
       Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit,
-      uint32_t method_idx, InvokeType invoke_type)
+      uint32_t method_idx, InvokeType invoke_type, bool check_incompatible_class_change = true)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   // Get declaration location of a resolved field.
@@ -295,6 +316,13 @@
   void ProcessedStaticField(bool resolved, bool local);
   void ProcessedInvoke(InvokeType invoke_type, int flags);
 
+  void ComputeFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit,
+                        const ScopedObjectAccess& soa, bool is_static,
+                        mirror::ArtField** resolved_field,
+                        mirror::Class** referrer_class,
+                        mirror::DexCache** dex_cache)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
   // Can we fast path instance field access? Computes field's offset and volatility.
   bool ComputeInstanceFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, bool is_put,
                                 MemberOffset* field_offset, bool* is_volatile)
@@ -380,6 +408,13 @@
     return timings_logger_;
   }
 
+  void SetDedupeEnabled(bool dedupe_enabled) {
+    dedupe_enabled_ = dedupe_enabled;
+  }
+  bool DedupeEnabled() const {
+    return dedupe_enabled_;
+  }
+
   // Checks if class specified by type_idx is one of the image_classes_
   bool IsImageClass(const char* descriptor) const;
 
@@ -484,7 +519,7 @@
                       const std::vector<const DexFile*>& dex_files,
                       ThreadPool* thread_pool, TimingLogger* timings)
       LOCKS_EXCLUDED(Locks::mutator_lock_);
-  void CompileMethod(const DexFile::CodeItem* code_item, uint32_t access_flags,
+  void CompileMethod(Thread* self, const DexFile::CodeItem* code_item, uint32_t access_flags,
                      InvokeType invoke_type, uint16_t class_def_idx, uint32_t method_idx,
                      jobject class_loader, const DexFile& dex_file,
                      DexToDexCompilationLevel dex_to_dex_compilation_level,
@@ -545,6 +580,7 @@
   class AOTCompilationStats;
   std::unique_ptr<AOTCompilationStats> stats_;
 
+  bool dedupe_enabled_;
   bool dump_stats_;
   const bool dump_passes_;
   const std::string& dump_cfg_file_name_;