From 6b17dc92e4cdc42c092eb4a2cd237778661c1751 Mon Sep 17 00:00:00 2001
From: Fabio Niephaus <code@fniephaus.com>
Date: Wed, 3 Mar 2021 09:58:22 +0100
Subject: [PATCH] Turn HandlePrimitiveFailedNoopNode into singleton

---
 .../nodes/HandlePrimitiveFailedNode.java      | 22 +++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/nodes/HandlePrimitiveFailedNode.java b/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/nodes/HandlePrimitiveFailedNode.java
index 6dbfd7a37..3585a59aa 100644
--- a/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/nodes/HandlePrimitiveFailedNode.java
+++ b/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/nodes/HandlePrimitiveFailedNode.java
@@ -10,6 +10,7 @@
 import com.oracle.truffle.api.dsl.CachedContext;
 import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.frame.VirtualFrame;
+import com.oracle.truffle.api.nodes.Node;
 import com.oracle.truffle.api.nodes.NodeCost;
 import com.oracle.truffle.api.nodes.NodeInfo;
 
@@ -21,13 +22,12 @@
 import de.hpi.swa.trufflesqueak.nodes.accessing.ArrayObjectNodes.ArrayObjectSizeNode;
 import de.hpi.swa.trufflesqueak.nodes.context.frame.FrameStackPushNode;
 
-@NodeInfo(cost = NodeCost.NONE)
 public abstract class HandlePrimitiveFailedNode extends AbstractNode {
     public static HandlePrimitiveFailedNode create(final CompiledCodeObject code) {
         if (code.hasStoreIntoTemp1AfterCallPrimitive()) {
             return HandlePrimitiveFailedImplNodeGen.create();
         } else {
-            return new HandlePrimitiveFailedNoopNode();
+            return HandlePrimitiveFailedNoopNode.SINGLETON;
         }
     }
 
@@ -57,10 +57,28 @@ protected static final void doHandleRawValue(final VirtualFrame frame, final int
         }
     }
 
+    @NodeInfo(cost = NodeCost.NONE)
     private static final class HandlePrimitiveFailedNoopNode extends HandlePrimitiveFailedNode {
+        private static final HandlePrimitiveFailedNoopNode SINGLETON = new HandlePrimitiveFailedNoopNode();
+
         @Override
         public void executeHandle(final VirtualFrame frame, final int reasonCode) {
             // nothing to do
         }
+
+        @Override
+        public boolean isAdoptable() {
+            return false;
+        }
+
+        @Override
+        public Node copy() {
+            return SINGLETON;
+        }
+
+        @Override
+        public Node deepCopy() {
+            return SINGLETON;
+        }
     }
 }