src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/PrimitiveStamp.java

@@ -37,10 +37,15 @@
     protected PrimitiveStamp(int bits, ArithmeticOpTable ops) {
         super(ops);
         this.bits = bits;
     }
 
+    @Override
+    public void accept(Visitor v) {
+        v.visitInt(bits);
+    }
+
     /**
      * The width in bits of the value described by this stamp.
      */
     public int getBits() {
         return bits;