src/jdk.incubator.vector/share/classes/jdk/incubator/vector/Byte512Vector.java

rev 55589 : 8221816: [vector] IndexOutOfBoundsException for fromArray/intoArray with unset mask lanes
Reviewed-by: duke

*** 834,856 ****
      @Override
      @ForceInline
      public void intoArray(byte[] a, int ix) {
          Objects.requireNonNull(a);
          ix = VectorIntrinsics.checkIndex(ix, a.length, LENGTH);
          VectorIntrinsics.store(Byte512Vector.class, byte.class, LENGTH,
                                 a, (((long) ix) << ARRAY_SHIFT) + Unsafe.ARRAY_BYTE_BASE_OFFSET,
                                 this,
                                 a, ix,
                                 (arr, idx, v) -> v.forEach((i, e) -> arr[idx + i] = e));
      }
  
      @Override
      @ForceInline
      public final void intoArray(byte[] a, int ax, Mask<Byte> m) {
!         ByteVector oldVal = ByteVector.fromArray(SPECIES, a, ax);
          ByteVector newVal = oldVal.blend(this, m);
!         newVal.intoArray(a, ax);
      }
  
      @Override
      @ForceInline
      public void intoByteArray(byte[] a, int ix) {
--- 834,866 ----
      @Override
      @ForceInline
      public void intoArray(byte[] a, int ix) {
          Objects.requireNonNull(a);
          ix = VectorIntrinsics.checkIndex(ix, a.length, LENGTH);
+         intoArrayWithoutCheck(a, ix);
+     }
+ 
+     @ForceInline
+     private void intoArrayWithoutCheck(byte[] a, int ix) {
          VectorIntrinsics.store(Byte512Vector.class, byte.class, LENGTH,
                                 a, (((long) ix) << ARRAY_SHIFT) + Unsafe.ARRAY_BYTE_BASE_OFFSET,
                                 this,
                                 a, ix,
                                 (arr, idx, v) -> v.forEach((i, e) -> arr[idx + i] = e));
      }
  
      @Override
      @ForceInline
      public final void intoArray(byte[] a, int ax, Mask<Byte> m) {
!         Objects.requireNonNull(a);
!         if (ax + LENGTH <= a.length) {
!             ByteVector oldVal = ByteVector.fromArrayWithoutCheck(SPECIES, a, ax);
              ByteVector newVal = oldVal.blend(this, m);
!             ((Byte512Vector)newVal).intoArrayWithoutCheck(a, ax);
!         } else {
!             forEach(m, (i, e) -> a[ax + i] = e);
!         }
      }
  
      @Override
      @ForceInline
      public void intoByteArray(byte[] a, int ix) {