Merge pull request #653 from mikepapadim/hotfix/object_repetition_with_shared_buffers

[hotfix] Object repetition with shared buffers on ON_DEVICE bytecodes

Author: stratika

tornado-runtime/src/main/java/uk/ac/manchester/tornado/runtime/graph/TornadoVMBytecodeBuilder.java

@@ -89,7 +89,7 @@ void emitAsyncNode(AbstractNode node, int dependencyBC, long offset, long batchS
         if (node instanceof AllocateMultipleBuffersNode allocateMultipleBuffersNode) {
             bitcodeASM.allocate(allocateMultipleBuffersNode.getValues(), batchSize);
         } else if (node instanceof OnDeviceObjectNode onDeviceObjectNode) {
-            bitcodeASM.onDevice(onDeviceObjectNode.getIndex(), dependencyBC, offset, batchSize); 
+            bitcodeASM.onDevice(onDeviceObjectNode.getValue().getIndex(), dependencyBC, offset, batchSize);
         } else if (node instanceof CopyInNode copyInNode) {
             bitcodeASM.transferToDeviceOnce(copyInNode.getValue().getIndex(), dependencyBC, offset, batchSize);
         } else if (node instanceof AllocateNode allocateNode) {

tornado-runtime/src/main/java/uk/ac/manchester/tornado/runtime/graph/nodes/OnDeviceObjectNode.java

@@ -12,7 +12,7 @@
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
@@ -28,23 +28,27 @@
 import java.util.List;
 
 public class OnDeviceObjectNode extends ContextOpNode {
+    private ObjectNode value;
+
     public OnDeviceObjectNode(ContextNode context) {
         super(context);
     }
 
-    private ObjectNode value;
+    public ObjectNode getValue() {
+        return value;
+    }
 
     public void setValue(ObjectNode object) {
         value = object;
     }
 
-    public ObjectNode getValue() {
-        return value;
-    }
-
     @Override
     public String toString() {
-        return String.format("[%d]: on-device object %d", id,  value.getIndex());
+        if (value == null) {
+            return String.format("[%d]: on-device object (value not set)", id);
+        } else {
+            return String.format("[%d]: on-device object %d", id, value.getIndex());
+        }
     }
 
     @Override