Hash-based dex cache type array.

Test: m test-art-host (Interpreter, Optimizing, JIT)
Test: m test-art-target on Nexus 6P (Interpreter, Optimizing, JIT)
Test: Nexus 6P boots
Test: m valgrind-test-art-host
Bug: 30627598
Bug: 34659969
Bug: 30419309
Change-Id: Ic00eda89e58088a3573fc9ec0ad04c0e69e161d1
diff --git a/compiler/image_writer.h b/compiler/image_writer.h
index cc7df1c..bdc7146 100644
--- a/compiler/image_writer.h
+++ b/compiler/image_writer.h
@@ -51,8 +51,13 @@
 }  // namespace space
 }  // namespace gc
 
+namespace mirror {
+class ClassLoader;
+}  // namespace mirror
+
 class ClassLoaderVisitor;
 class ClassTable;
+class ImtConflictTable;
 
 static constexpr int kInvalidFd = -1;
 
@@ -79,6 +84,11 @@
     return true;
   }
 
+  ObjPtr<mirror::ClassLoader> GetClassLoader() {
+    CHECK_EQ(class_loaders_.size(), compile_app_image_ ? 1u : 0u);
+    return compile_app_image_ ? *class_loaders_.begin() : nullptr;
+  }
+
   template <typename T>
   T* GetImageAddress(T* object) const REQUIRES_SHARED(Locks::mutator_lock_) {
     if (object == nullptr || IsInBootImage(object)) {