--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CodeGenerator.java	Sat Feb 10 09:23:41 2018 -0800
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/CodeGenerator.java	Sun Feb 11 12:41:56 2018 +0100
@@ -1077,12 +1077,6 @@
             }
 
             @Override
-            public boolean enterCOMMALEFT(final BinaryNode binaryNode) {
-                loadCOMMALEFT(binaryNode, resultBounds);
-                return false;
-            }
-
-            @Override
             public boolean enterCOMMARIGHT(final BinaryNode binaryNode) {
                 loadCOMMARIGHT(binaryNode, resultBounds);
                 return false;
@@ -4247,11 +4241,6 @@
         loadMaybeDiscard(binaryNode, binaryNode.rhs(), resultBounds);
     }
 
-    private void loadCOMMALEFT(final BinaryNode binaryNode, final TypeBounds resultBounds) {
-        loadMaybeDiscard(binaryNode, binaryNode.lhs(), resultBounds);
-        loadAndDiscard(binaryNode.rhs());
-    }
-
     private void loadDIV(final BinaryNode binaryNode, final TypeBounds resultBounds) {
         new BinaryArith() {
             @Override