--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/visitor/NodeOperatorVisitor.java	Sat Feb 10 09:23:41 2018 -0800
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/visitor/NodeOperatorVisitor.java	Sun Feb 11 12:41:56 2018 +0100
@@ -143,8 +143,6 @@
             return enterBIT_XOR(binaryNode);
         case COMMARIGHT:
             return enterCOMMARIGHT(binaryNode);
-        case COMMALEFT:
-            return enterCOMMALEFT(binaryNode);
         case DIV:
             return enterDIV(binaryNode);
         case EQ:
@@ -227,8 +225,6 @@
             return leaveBIT_XOR(binaryNode);
         case COMMARIGHT:
             return leaveCOMMARIGHT(binaryNode);
-        case COMMALEFT:
-            return leaveCOMMALEFT(binaryNode);
         case DIV:
             return leaveDIV(binaryNode);
         case EQ:
@@ -815,28 +811,6 @@
     }
 
     /**
-     * Binary enter - callback for entering comma left operator
-     * (a, b) where the result is a
-     *
-     * @param  binaryNode the node
-     * @return true if traversal should continue and node children be traversed, false otherwise
-     */
-    public boolean enterCOMMALEFT(final BinaryNode binaryNode) {
-        return enterDefault(binaryNode);
-    }
-
-    /**
-     * Binary leave - callback for leaving a comma left operator
-     * (a, b) where the result is a
-     *
-     * @param  binaryNode the node
-     * @return processed node, which will replace the original one, or the original node
-     */
-    public Node leaveCOMMALEFT(final BinaryNode binaryNode) {
-        return leaveDefault(binaryNode);
-    }
-
-    /**
      * Binary enter - callback for entering comma right operator
      * (a, b) where the result is b
      *