Correct identity check.

Author: MichaelHaas99

src/jdk.internal.vm.ci/share/classes/jdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl.java

@@ -450,7 +450,10 @@ public boolean isInterface() {
 
     @Override
     public boolean isIdentity() {
-        return (getAccessFlags() & config().jvmAccIdentity) != 0;
+        if (!config().valhallaEnabled) {
+            return !isInterface();
+        }
+        return isArray() || (getAccessFlags() & config().jvmAccIdentity) != 0;
     }
 
     @Override
@@ -1284,9 +1287,5 @@ private List<AnnotationData> getAnnotationData0(ResolvedJavaType... filter) {
         byte[] encoded = compilerToVM().getEncodedClassAnnotationData(this, filter);
         return VMSupport.decodeAnnotations(encoded, AnnotationDataDecoder.INSTANCE);
     }
-
-    public boolean canBePassedAsFields() {
-        if (isStatic() || isInterface() || !isIdentity()) return false;
-        return compilerToVM().canBePassedAsFields(this);
-    }
+    
 }

src/jdk.internal.vm.ci/share/classes/jdk/vm/ci/hotspot/HotSpotVMConfig.java

@@ -71,6 +71,7 @@ String getHostArchitectureName() {
     final int objectAlignment = getFlag("ObjectAlignmentInBytes", Integer.class);
 
     final int klassOffsetInBytes = getFieldValue("CompilerToVM::Data::oopDesc_klass_offset_in_bytes", Integer.class, "int");
+    public final boolean valhallaEnabled = getFlag("EnableValhalla", Boolean.class);
 
     final int subklassOffset = getFieldOffset("Klass::_subklass", Integer.class, "Klass*");
     final int superOffset = getFieldOffset("Klass::_super", Integer.class, "Klass*");