src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorSpecies.java

*** 42,56 ****
       * @return the primitive element type
       */
      public abstract Class<E> elementType();
  
      /**
!      * Returns the vector box type for this species
       *
!      * @return the box type
       */
!     abstract Class<?> boxType();
  
      /**
       * Returns the vector mask type for this species
       *
       * @return the box type
--- 42,56 ----
       * @return the primitive element type
       */
      public abstract Class<E> elementType();
  
      /**
!      * Returns the vector type corresponding to this species
       *
!      * @return the vector type corresponding to this species
       */
!     abstract Class<?> vectorType();
  
      /**
       * Returns the vector mask type for this species
       *
       * @return the box type
*** 93,102 ****
--- 93,112 ----
       *
       * @return the total vector size, in bits
       */
      default public int bitSize() { return shape().bitSize(); }
  
+     /**
+      * Helper function to calculate the loop terminating condition when iterating over an array of given length.
+      * Returns the result of {@code (length & ~(this.length() - 1))}
+      *
+      * @return the result of {@code (length & ~(this.length() - 1))}
+      */
+     default public int loopBound(int length) {
+         return length & ~(this.length() - 1);
+     }
+ 
      // Factory
  
      /**
       * Finds a species for an element type and shape.
       *