Remove unnecessary QueueForMarkOnExitNode

Author: eregon

src/main/java/org/truffleruby/cext/CExtNodes.java

@@ -445,9 +445,9 @@ public abstract static class MarkObjectOnCallExit extends PrimitiveArrayArgument
 
         @Specialization
         Object markOnCallExit(Object object,
-                @Cached WrapNode wrapNode,
-                @Cached MarkingServiceNodes.QueueForMarkOnExitNode markOnExitNode) {
-            markOnExitNode.execute(wrapNode.execute(object));
+                @Cached WrapNode wrapNode) {
+            ValueWrapper wrapper = wrapNode.execute(object);
+            getLanguage().getCurrentThread().getCurrentFiber().extensionCallStack.markOnExitObject(wrapper);
             return nil;
         }
     }

src/main/java/org/truffleruby/core/MarkingServiceNodes.java

@@ -11,7 +11,6 @@
 
 import com.oracle.truffle.api.dsl.GenerateCached;
 import com.oracle.truffle.api.dsl.GenerateInline;
-import com.oracle.truffle.api.dsl.NeverDefault;
 import com.oracle.truffle.api.dsl.NonIdempotent;
 import com.oracle.truffle.api.nodes.Node;
 import com.oracle.truffle.api.profiles.InlinedConditionProfile;
@@ -76,22 +75,6 @@ protected static ExtensionCallStack getStack(Node node) {
         }
     }
 
-    public static final class QueueForMarkOnExitNode extends RubyBaseNode {
-
-        @NeverDefault
-        public static QueueForMarkOnExitNode create() {
-            return new QueueForMarkOnExitNode();
-        }
-
-        public void execute(ValueWrapper object) {
-            addToList(getLanguage().getCurrentThread().getCurrentFiber().extensionCallStack, object);
-        }
-
-        protected void addToList(ExtensionCallStack stack, ValueWrapper object) {
-            stack.markOnExitObject(object);
-        }
-    }
-
     @GenerateInline
     @GenerateCached(false)
     public abstract static class RunMarkOnExitNode extends RubyBaseNode {