Support directly invoking interface default methods

With the Java 8 Language one is allowed to directly call default
interface methods of interfaces one (directly) implements through the
use of the super keyword. We support this behavior through the
invoke-super opcode with the target being an interface.

We add 3 tests for this behavior.

Currently only supports slow-path interpreter.

Invoke-super is currently extremely slow.

Bug: 24618811

Change-Id: I7e06e17326f7dbae0116bd7dfefca151f0092bd2

1 files changed, 6 insertions, 1 deletions

diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index ce879ba2ee..a9e6f06725 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -848,6 +848,11 @@ class MANAGED Class FINAL : public Object {
   ArtMethod* FindVirtualMethodForSuper(ArtMethod* method, size_t pointer_size)
       SHARED_REQUIRES(Locks::mutator_lock_);
 
+  // Given a method from some implementor of this interface, return the specific implementation
+  // method for this class.
+  ArtMethod* FindVirtualMethodForInterfaceSuper(ArtMethod* method, size_t pointer_size)
+      SHARED_REQUIRES(Locks::mutator_lock_);
+
   // Given a method implemented by this class, but potentially from a
   // super class or interface, return the specific implementation
   // method for this class.
@@ -1058,7 +1063,7 @@ class MANAGED Class FINAL : public Object {
       SHARED_REQUIRES(Locks::mutator_lock_);
 
   pid_t GetClinitThreadId() SHARED_REQUIRES(Locks::mutator_lock_) {
-    DCHECK(IsIdxLoaded() || IsErroneous());
+    DCHECK(IsIdxLoaded() || IsErroneous()) << PrettyClass(this);
     return GetField32(OFFSET_OF_OBJECT_MEMBER(Class, clinit_thread_id_));
   }