1 /*
  2  * Copyright (c) 2017, 2022, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.  Oracle designates this
  8  * particular file as subject to the "Classpath" exception as provided
  9  * by Oracle in the LICENSE file that accompanied this code.
 10  *
 11  * This code is distributed in the hope that it will be useful, but WITHOUT
 12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 14  * version 2 for more details (a copy is included in the LICENSE file that
 15  * accompanied this code).
 16  *
 17  * You should have received a copy of the GNU General Public License version
 18  * 2 along with this work; if not, write to the Free Software Foundation,
 19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 20  *
 21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 22  * or visit www.oracle.com if you need additional information or have any
 23  * questions.
 24  */
 25 package jdk.incubator.vector;
 26 
 27 import java.util.Arrays;
 28 import java.util.Objects;
 29 import java.util.function.IntUnaryOperator;
 30 
 31 import jdk.incubator.foreign.MemorySegment;
 32 import jdk.internal.vm.annotation.ForceInline;
 33 import jdk.internal.vm.vector.VectorSupport;
 34 
 35 import static jdk.internal.vm.vector.VectorSupport.*;
 36 
 37 import static jdk.incubator.vector.VectorOperators.*;
 38 
 39 // -- This file was mechanically generated: Do not edit! -- //
 40 
 41 @SuppressWarnings("cast")  // warning: redundant cast
 42 final class Byte256Vector extends ByteVector {
 43     static final ByteSpecies VSPECIES =
 44         (ByteSpecies) ByteVector.SPECIES_256;
 45 
 46     static final VectorShape VSHAPE =
 47         VSPECIES.vectorShape();
 48 
 49     static final Class<Byte256Vector> VCLASS = Byte256Vector.class;
 50 
 51     static final int VSIZE = VSPECIES.vectorBitSize();
 52 
 53     static final int VLENGTH = VSPECIES.laneCount(); // used by the JVM
 54 
 55     static final Class<Byte> ETYPE = byte.class; // used by the JVM
 56 
 57     Byte256Vector(byte[] v) {
 58         super(v);
 59     }
 60 
 61     // For compatibility as Byte256Vector::new,
 62     // stored into species.vectorFactory.
 63     Byte256Vector(Object v) {
 64         this((byte[]) v);
 65     }
 66 
 67     static final Byte256Vector ZERO = new Byte256Vector(new byte[VLENGTH]);
 68     static final Byte256Vector IOTA = new Byte256Vector(VSPECIES.iotaArray());
 69 
 70     static {
 71         // Warm up a few species caches.
 72         // If we do this too much we will
 73         // get NPEs from bootstrap circularity.
 74         VSPECIES.dummyVector();
 75         VSPECIES.withLanes(LaneType.BYTE);
 76     }
 77 
 78     // Specialized extractors
 79 
 80     @ForceInline
 81     final @Override
 82     public ByteSpecies vspecies() {
 83         // ISSUE:  This should probably be a @Stable
 84         // field inside AbstractVector, rather than
 85         // a megamorphic method.
 86         return VSPECIES;
 87     }
 88 
 89     @ForceInline
 90     @Override
 91     public final Class<Byte> elementType() { return byte.class; }
 92 
 93     @ForceInline
 94     @Override
 95     public final int elementSize() { return Byte.SIZE; }
 96 
 97     @ForceInline
 98     @Override
 99     public final VectorShape shape() { return VSHAPE; }
100 
101     @ForceInline
102     @Override
103     public final int length() { return VLENGTH; }
104 
105     @ForceInline
106     @Override
107     public final int bitSize() { return VSIZE; }
108 
109     @ForceInline
110     @Override
111     public final int byteSize() { return VSIZE / Byte.SIZE; }
112 
113     /*package-private*/
114     @ForceInline
115     final @Override
116     byte[] vec() {
117         return (byte[])getPayload();
118     }
119 
120     // Virtualized constructors
121 
122     @Override
123     @ForceInline
124     public final Byte256Vector broadcast(byte e) {
125         return (Byte256Vector) super.broadcastTemplate(e);  // specialize
126     }
127 
128     @Override
129     @ForceInline
130     public final Byte256Vector broadcast(long e) {
131         return (Byte256Vector) super.broadcastTemplate(e);  // specialize
132     }
133 
134     @Override
135     @ForceInline
136     Byte256Mask maskFromArray(boolean[] bits) {
137         return new Byte256Mask(bits);
138     }
139 
140     @Override
141     @ForceInline
142     Byte256Shuffle iotaShuffle() { return Byte256Shuffle.IOTA; }
143 
144     @ForceInline
145     Byte256Shuffle iotaShuffle(int start, int step, boolean wrap) {
146       if (wrap) {
147         return (Byte256Shuffle)VectorSupport.shuffleIota(ETYPE, Byte256Shuffle.class, VSPECIES, VLENGTH, start, step, 1,
148                 (l, lstart, lstep, s) -> s.shuffleFromOp(i -> (VectorIntrinsics.wrapToRange(i*lstep + lstart, l))));
149       } else {
150         return (Byte256Shuffle)VectorSupport.shuffleIota(ETYPE, Byte256Shuffle.class, VSPECIES, VLENGTH, start, step, 0,
151                 (l, lstart, lstep, s) -> s.shuffleFromOp(i -> (i*lstep + lstart)));
152       }
153     }
154 
155     @Override
156     @ForceInline
157     Byte256Shuffle shuffleFromBytes(byte[] reorder) { return new Byte256Shuffle(reorder); }
158 
159     @Override
160     @ForceInline
161     Byte256Shuffle shuffleFromArray(int[] indexes, int i) { return new Byte256Shuffle(indexes, i); }
162 
163     @Override
164     @ForceInline
165     Byte256Shuffle shuffleFromOp(IntUnaryOperator fn) { return new Byte256Shuffle(fn); }
166 
167     // Make a vector of the same species but the given elements:
168     @ForceInline
169     final @Override
170     Byte256Vector vectorFactory(byte[] vec) {
171         return new Byte256Vector(vec);
172     }
173 
174     @ForceInline
175     final @Override
176     Byte256Vector asByteVectorRaw() {
177         return (Byte256Vector) super.asByteVectorRawTemplate();  // specialize
178     }
179 
180     @ForceInline
181     final @Override
182     AbstractVector<?> asVectorRaw(LaneType laneType) {
183         return super.asVectorRawTemplate(laneType);  // specialize
184     }
185 
186     // Unary operator
187 
188     @ForceInline
189     final @Override
190     Byte256Vector uOp(FUnOp f) {
191         return (Byte256Vector) super.uOpTemplate(f);  // specialize
192     }
193 
194     @ForceInline
195     final @Override
196     Byte256Vector uOp(VectorMask<Byte> m, FUnOp f) {
197         return (Byte256Vector)
198             super.uOpTemplate((Byte256Mask)m, f);  // specialize
199     }
200 
201     // Binary operator
202 
203     @ForceInline
204     final @Override
205     Byte256Vector bOp(Vector<Byte> v, FBinOp f) {
206         return (Byte256Vector) super.bOpTemplate((Byte256Vector)v, f);  // specialize
207     }
208 
209     @ForceInline
210     final @Override
211     Byte256Vector bOp(Vector<Byte> v,
212                      VectorMask<Byte> m, FBinOp f) {
213         return (Byte256Vector)
214             super.bOpTemplate((Byte256Vector)v, (Byte256Mask)m,
215                               f);  // specialize
216     }
217 
218     // Ternary operator
219 
220     @ForceInline
221     final @Override
222     Byte256Vector tOp(Vector<Byte> v1, Vector<Byte> v2, FTriOp f) {
223         return (Byte256Vector)
224             super.tOpTemplate((Byte256Vector)v1, (Byte256Vector)v2,
225                               f);  // specialize
226     }
227 
228     @ForceInline
229     final @Override
230     Byte256Vector tOp(Vector<Byte> v1, Vector<Byte> v2,
231                      VectorMask<Byte> m, FTriOp f) {
232         return (Byte256Vector)
233             super.tOpTemplate((Byte256Vector)v1, (Byte256Vector)v2,
234                               (Byte256Mask)m, f);  // specialize
235     }
236 
237     @ForceInline
238     final @Override
239     byte rOp(byte v, VectorMask<Byte> m, FBinOp f) {
240         return super.rOpTemplate(v, m, f);  // specialize
241     }
242 
243     @Override
244     @ForceInline
245     public final <F>
246     Vector<F> convertShape(VectorOperators.Conversion<Byte,F> conv,
247                            VectorSpecies<F> rsp, int part) {
248         return super.convertShapeTemplate(conv, rsp, part);  // specialize
249     }
250 
251     @Override
252     @ForceInline
253     public final <F>
254     Vector<F> reinterpretShape(VectorSpecies<F> toSpecies, int part) {
255         return super.reinterpretShapeTemplate(toSpecies, part);  // specialize
256     }
257 
258     // Specialized algebraic operations:
259 
260     // The following definition forces a specialized version of this
261     // crucial method into the v-table of this class.  A call to add()
262     // will inline to a call to lanewise(ADD,), at which point the JIT
263     // intrinsic will have the opcode of ADD, plus all the metadata
264     // for this particular class, enabling it to generate precise
265     // code.
266     //
267     // There is probably no benefit to the JIT to specialize the
268     // masked or broadcast versions of the lanewise method.
269 
270     @Override
271     @ForceInline
272     public Byte256Vector lanewise(Unary op) {
273         return (Byte256Vector) super.lanewiseTemplate(op);  // specialize
274     }
275 
276     @Override
277     @ForceInline
278     public Byte256Vector lanewise(Unary op, VectorMask<Byte> m) {
279         return (Byte256Vector) super.lanewiseTemplate(op, Byte256Mask.class, (Byte256Mask) m);  // specialize
280     }
281 
282     @Override
283     @ForceInline
284     public Byte256Vector lanewise(Binary op, Vector<Byte> v) {
285         return (Byte256Vector) super.lanewiseTemplate(op, v);  // specialize
286     }
287 
288     @Override
289     @ForceInline
290     public Byte256Vector lanewise(Binary op, Vector<Byte> v, VectorMask<Byte> m) {
291         return (Byte256Vector) super.lanewiseTemplate(op, Byte256Mask.class, v, (Byte256Mask) m);  // specialize
292     }
293 
294     /*package-private*/
295     @Override
296     @ForceInline Byte256Vector
297     lanewiseShift(VectorOperators.Binary op, int e) {
298         return (Byte256Vector) super.lanewiseShiftTemplate(op, e);  // specialize
299     }
300 
301     /*package-private*/
302     @Override
303     @ForceInline Byte256Vector
304     lanewiseShift(VectorOperators.Binary op, int e, VectorMask<Byte> m) {
305         return (Byte256Vector) super.lanewiseShiftTemplate(op, Byte256Mask.class, e, (Byte256Mask) m);  // specialize
306     }
307 
308     /*package-private*/
309     @Override
310     @ForceInline
311     public final
312     Byte256Vector
313     lanewise(Ternary op, Vector<Byte> v1, Vector<Byte> v2) {
314         return (Byte256Vector) super.lanewiseTemplate(op, v1, v2);  // specialize
315     }
316 
317     @Override
318     @ForceInline
319     public final
320     Byte256Vector
321     lanewise(Ternary op, Vector<Byte> v1, Vector<Byte> v2, VectorMask<Byte> m) {
322         return (Byte256Vector) super.lanewiseTemplate(op, Byte256Mask.class, v1, v2, (Byte256Mask) m);  // specialize
323     }
324 
325     @Override
326     @ForceInline
327     public final
328     Byte256Vector addIndex(int scale) {
329         return (Byte256Vector) super.addIndexTemplate(scale);  // specialize
330     }
331 
332     // Type specific horizontal reductions
333 
334     @Override
335     @ForceInline
336     public final byte reduceLanes(VectorOperators.Associative op) {
337         return super.reduceLanesTemplate(op);  // specialized
338     }
339 
340     @Override
341     @ForceInline
342     public final byte reduceLanes(VectorOperators.Associative op,
343                                     VectorMask<Byte> m) {
344         return super.reduceLanesTemplate(op, Byte256Mask.class, (Byte256Mask) m);  // specialized
345     }
346 
347     @Override
348     @ForceInline
349     public final long reduceLanesToLong(VectorOperators.Associative op) {
350         return (long) super.reduceLanesTemplate(op);  // specialized
351     }
352 
353     @Override
354     @ForceInline
355     public final long reduceLanesToLong(VectorOperators.Associative op,
356                                         VectorMask<Byte> m) {
357         return (long) super.reduceLanesTemplate(op, Byte256Mask.class, (Byte256Mask) m);  // specialized
358     }
359 
360     @ForceInline
361     public VectorShuffle<Byte> toShuffle() {
362         return super.toShuffleTemplate(Byte256Shuffle.class); // specialize
363     }
364 
365     // Specialized unary testing
366 
367     @Override
368     @ForceInline
369     public final Byte256Mask test(Test op) {
370         return super.testTemplate(Byte256Mask.class, op);  // specialize
371     }
372 
373     @Override
374     @ForceInline
375     public final Byte256Mask test(Test op, VectorMask<Byte> m) {
376         return super.testTemplate(Byte256Mask.class, op, (Byte256Mask) m);  // specialize
377     }
378 
379     // Specialized comparisons
380 
381     @Override
382     @ForceInline
383     public final Byte256Mask compare(Comparison op, Vector<Byte> v) {
384         return super.compareTemplate(Byte256Mask.class, op, v);  // specialize
385     }
386 
387     @Override
388     @ForceInline
389     public final Byte256Mask compare(Comparison op, byte s) {
390         return super.compareTemplate(Byte256Mask.class, op, s);  // specialize
391     }
392 
393     @Override
394     @ForceInline
395     public final Byte256Mask compare(Comparison op, long s) {
396         return super.compareTemplate(Byte256Mask.class, op, s);  // specialize
397     }
398 
399     @Override
400     @ForceInline
401     public final Byte256Mask compare(Comparison op, Vector<Byte> v, VectorMask<Byte> m) {
402         return super.compareTemplate(Byte256Mask.class, op, v, (Byte256Mask) m);
403     }
404 
405 
406     @Override
407     @ForceInline
408     public Byte256Vector blend(Vector<Byte> v, VectorMask<Byte> m) {
409         return (Byte256Vector)
410             super.blendTemplate(Byte256Mask.class,
411                                 (Byte256Vector) v,
412                                 (Byte256Mask) m);  // specialize
413     }
414 
415     @Override
416     @ForceInline
417     public Byte256Vector slice(int origin, Vector<Byte> v) {
418         return (Byte256Vector) super.sliceTemplate(origin, v);  // specialize
419     }
420 
421     @Override
422     @ForceInline
423     public Byte256Vector slice(int origin) {
424         return (Byte256Vector) super.sliceTemplate(origin);  // specialize
425     }
426 
427     @Override
428     @ForceInline
429     public Byte256Vector unslice(int origin, Vector<Byte> w, int part) {
430         return (Byte256Vector) super.unsliceTemplate(origin, w, part);  // specialize
431     }
432 
433     @Override
434     @ForceInline
435     public Byte256Vector unslice(int origin, Vector<Byte> w, int part, VectorMask<Byte> m) {
436         return (Byte256Vector)
437             super.unsliceTemplate(Byte256Mask.class,
438                                   origin, w, part,
439                                   (Byte256Mask) m);  // specialize
440     }
441 
442     @Override
443     @ForceInline
444     public Byte256Vector unslice(int origin) {
445         return (Byte256Vector) super.unsliceTemplate(origin);  // specialize
446     }
447 
448     @Override
449     @ForceInline
450     public Byte256Vector rearrange(VectorShuffle<Byte> s) {
451         return (Byte256Vector)
452             super.rearrangeTemplate(Byte256Shuffle.class,
453                                     (Byte256Shuffle) s);  // specialize
454     }
455 
456     @Override
457     @ForceInline
458     public Byte256Vector rearrange(VectorShuffle<Byte> shuffle,
459                                   VectorMask<Byte> m) {
460         return (Byte256Vector)
461             super.rearrangeTemplate(Byte256Shuffle.class,
462                                     Byte256Mask.class,
463                                     (Byte256Shuffle) shuffle,
464                                     (Byte256Mask) m);  // specialize
465     }
466 
467     @Override
468     @ForceInline
469     public Byte256Vector rearrange(VectorShuffle<Byte> s,
470                                   Vector<Byte> v) {
471         return (Byte256Vector)
472             super.rearrangeTemplate(Byte256Shuffle.class,
473                                     (Byte256Shuffle) s,
474                                     (Byte256Vector) v);  // specialize
475     }
476 
477     @Override
478     @ForceInline
479     public Byte256Vector compress(VectorMask<Byte> m) {
480         return (Byte256Vector)
481             super.compressTemplate(Byte256Mask.class,
482                                    (Byte256Mask) m);  // specialize
483     }
484 
485     @Override
486     @ForceInline
487     public Byte256Vector expand(VectorMask<Byte> m) {
488         return (Byte256Vector)
489             super.expandTemplate(Byte256Mask.class,
490                                    (Byte256Mask) m);  // specialize
491     }
492 
493     @Override
494     @ForceInline
495     public Byte256Vector selectFrom(Vector<Byte> v) {
496         return (Byte256Vector)
497             super.selectFromTemplate((Byte256Vector) v);  // specialize
498     }
499 
500     @Override
501     @ForceInline
502     public Byte256Vector selectFrom(Vector<Byte> v,
503                                    VectorMask<Byte> m) {
504         return (Byte256Vector)
505             super.selectFromTemplate((Byte256Vector) v,
506                                      (Byte256Mask) m);  // specialize
507     }
508 
509 
510     @ForceInline
511     @Override
512     public byte lane(int i) {
513         switch(i) {
514             case 0: return laneHelper(0);
515             case 1: return laneHelper(1);
516             case 2: return laneHelper(2);
517             case 3: return laneHelper(3);
518             case 4: return laneHelper(4);
519             case 5: return laneHelper(5);
520             case 6: return laneHelper(6);
521             case 7: return laneHelper(7);
522             case 8: return laneHelper(8);
523             case 9: return laneHelper(9);
524             case 10: return laneHelper(10);
525             case 11: return laneHelper(11);
526             case 12: return laneHelper(12);
527             case 13: return laneHelper(13);
528             case 14: return laneHelper(14);
529             case 15: return laneHelper(15);
530             case 16: return laneHelper(16);
531             case 17: return laneHelper(17);
532             case 18: return laneHelper(18);
533             case 19: return laneHelper(19);
534             case 20: return laneHelper(20);
535             case 21: return laneHelper(21);
536             case 22: return laneHelper(22);
537             case 23: return laneHelper(23);
538             case 24: return laneHelper(24);
539             case 25: return laneHelper(25);
540             case 26: return laneHelper(26);
541             case 27: return laneHelper(27);
542             case 28: return laneHelper(28);
543             case 29: return laneHelper(29);
544             case 30: return laneHelper(30);
545             case 31: return laneHelper(31);
546             default: throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
547         }
548     }
549 
550     public byte laneHelper(int i) {
551         return (byte) VectorSupport.extract(
552                                 VCLASS, ETYPE, VLENGTH,
553                                 this, i,
554                                 (vec, ix) -> {
555                                     byte[] vecarr = vec.vec();
556                                     return (long)vecarr[ix];
557                                 });
558     }
559 
560     @ForceInline
561     @Override
562     public Byte256Vector withLane(int i, byte e) {
563         switch (i) {
564             case 0: return withLaneHelper(0, e);
565             case 1: return withLaneHelper(1, e);
566             case 2: return withLaneHelper(2, e);
567             case 3: return withLaneHelper(3, e);
568             case 4: return withLaneHelper(4, e);
569             case 5: return withLaneHelper(5, e);
570             case 6: return withLaneHelper(6, e);
571             case 7: return withLaneHelper(7, e);
572             case 8: return withLaneHelper(8, e);
573             case 9: return withLaneHelper(9, e);
574             case 10: return withLaneHelper(10, e);
575             case 11: return withLaneHelper(11, e);
576             case 12: return withLaneHelper(12, e);
577             case 13: return withLaneHelper(13, e);
578             case 14: return withLaneHelper(14, e);
579             case 15: return withLaneHelper(15, e);
580             case 16: return withLaneHelper(16, e);
581             case 17: return withLaneHelper(17, e);
582             case 18: return withLaneHelper(18, e);
583             case 19: return withLaneHelper(19, e);
584             case 20: return withLaneHelper(20, e);
585             case 21: return withLaneHelper(21, e);
586             case 22: return withLaneHelper(22, e);
587             case 23: return withLaneHelper(23, e);
588             case 24: return withLaneHelper(24, e);
589             case 25: return withLaneHelper(25, e);
590             case 26: return withLaneHelper(26, e);
591             case 27: return withLaneHelper(27, e);
592             case 28: return withLaneHelper(28, e);
593             case 29: return withLaneHelper(29, e);
594             case 30: return withLaneHelper(30, e);
595             case 31: return withLaneHelper(31, e);
596             default: throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
597         }
598     }
599 
600     public Byte256Vector withLaneHelper(int i, byte e) {
601         return VectorSupport.insert(
602                                 VCLASS, ETYPE, VLENGTH,
603                                 this, i, (long)e,
604                                 (v, ix, bits) -> {
605                                     byte[] res = v.vec().clone();
606                                     res[ix] = (byte)bits;
607                                     return v.vectorFactory(res);
608                                 });
609     }
610 
611     // Mask
612 
613     static final class Byte256Mask extends AbstractMask<Byte> {
614         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
615         static final Class<Byte> ETYPE = byte.class; // used by the JVM
616 
617         Byte256Mask(boolean[] bits) {
618             this(bits, 0);
619         }
620 
621         Byte256Mask(boolean[] bits, int offset) {
622             super(prepare(bits, offset));
623         }
624 
625         Byte256Mask(boolean val) {
626             super(prepare(val));
627         }
628 
629         private static boolean[] prepare(boolean[] bits, int offset) {
630             boolean[] newBits = new boolean[VSPECIES.laneCount()];
631             for (int i = 0; i < newBits.length; i++) {
632                 newBits[i] = bits[offset + i];
633             }
634             return newBits;
635         }
636 
637         private static boolean[] prepare(boolean val) {
638             boolean[] bits = new boolean[VSPECIES.laneCount()];
639             Arrays.fill(bits, val);
640             return bits;
641         }
642 
643         @ForceInline
644         final @Override
645         public ByteSpecies vspecies() {
646             // ISSUE:  This should probably be a @Stable
647             // field inside AbstractMask, rather than
648             // a megamorphic method.
649             return VSPECIES;
650         }
651 
652         @ForceInline
653         boolean[] getBits() {
654             return (boolean[])getPayload();
655         }
656 
657         @Override
658         Byte256Mask uOp(MUnOp f) {
659             boolean[] res = new boolean[vspecies().laneCount()];
660             boolean[] bits = getBits();
661             for (int i = 0; i < res.length; i++) {
662                 res[i] = f.apply(i, bits[i]);
663             }
664             return new Byte256Mask(res);
665         }
666 
667         @Override
668         Byte256Mask bOp(VectorMask<Byte> m, MBinOp f) {
669             boolean[] res = new boolean[vspecies().laneCount()];
670             boolean[] bits = getBits();
671             boolean[] mbits = ((Byte256Mask)m).getBits();
672             for (int i = 0; i < res.length; i++) {
673                 res[i] = f.apply(i, bits[i], mbits[i]);
674             }
675             return new Byte256Mask(res);
676         }
677 
678         @ForceInline
679         @Override
680         public final
681         Byte256Vector toVector() {
682             return (Byte256Vector) super.toVectorTemplate();  // specialize
683         }
684 
685         /**
686          * Helper function for lane-wise mask conversions.
687          * This function kicks in after intrinsic failure.
688          */
689         @ForceInline
690         private final <E>
691         VectorMask<E> defaultMaskCast(AbstractSpecies<E> dsp) {
692             if (length() != dsp.laneCount())
693                 throw new IllegalArgumentException("VectorMask length and species length differ");
694             boolean[] maskArray = toArray();
695             return  dsp.maskFactory(maskArray).check(dsp);
696         }
697 
698         @Override
699         @ForceInline
700         public <E> VectorMask<E> cast(VectorSpecies<E> dsp) {
701             AbstractSpecies<E> species = (AbstractSpecies<E>) dsp;
702             if (length() != species.laneCount())
703                 throw new IllegalArgumentException("VectorMask length and species length differ");
704 
705             return VectorSupport.convert(VectorSupport.VECTOR_OP_CAST,
706                 this.getClass(), ETYPE, VLENGTH,
707                 species.maskType(), species.elementType(), VLENGTH,
708                 this, species,
709                 (m, s) -> s.maskFactory(m.toArray()).check(s));
710         }
711 
712         @Override
713         @ForceInline
714         public Byte256Mask eq(VectorMask<Byte> mask) {
715             Objects.requireNonNull(mask);
716             Byte256Mask m = (Byte256Mask)mask;
717             return xor(m.not());
718         }
719 
720         // Unary operations
721 
722         @Override
723         @ForceInline
724         public Byte256Mask not() {
725             return xor(maskAll(true));
726         }
727 
728         @Override
729         @ForceInline
730         public Byte256Mask compress() {
731             return (Byte256Mask)VectorSupport.comExpOp(VectorSupport.VECTOR_OP_MASK_COMPRESS,
732                 Byte256Vector.class, Byte256Mask.class, ETYPE, VLENGTH, null, this,
733                 (v1, m1) -> VSPECIES.iota().compare(VectorOperators.LT, m1.trueCount()));
734         }
735 
736 
737         // Binary operations
738 
739         @Override
740         @ForceInline
741         public Byte256Mask and(VectorMask<Byte> mask) {
742             Objects.requireNonNull(mask);
743             Byte256Mask m = (Byte256Mask)mask;
744             return VectorSupport.binaryOp(VECTOR_OP_AND, Byte256Mask.class, null, byte.class, VLENGTH,
745                                           this, m, null,
746                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a & b));
747         }
748 
749         @Override
750         @ForceInline
751         public Byte256Mask or(VectorMask<Byte> mask) {
752             Objects.requireNonNull(mask);
753             Byte256Mask m = (Byte256Mask)mask;
754             return VectorSupport.binaryOp(VECTOR_OP_OR, Byte256Mask.class, null, byte.class, VLENGTH,
755                                           this, m, null,
756                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a | b));
757         }
758 
759         @ForceInline
760         /* package-private */
761         Byte256Mask xor(VectorMask<Byte> mask) {
762             Objects.requireNonNull(mask);
763             Byte256Mask m = (Byte256Mask)mask;
764             return VectorSupport.binaryOp(VECTOR_OP_XOR, Byte256Mask.class, null, byte.class, VLENGTH,
765                                           this, m, null,
766                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a ^ b));
767         }
768 
769         // Mask Query operations
770 
771         @Override
772         @ForceInline
773         public int trueCount() {
774             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TRUECOUNT, Byte256Mask.class, byte.class, VLENGTH, this,
775                                                       (m) -> trueCountHelper(m.getBits()));
776         }
777 
778         @Override
779         @ForceInline
780         public int firstTrue() {
781             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_FIRSTTRUE, Byte256Mask.class, byte.class, VLENGTH, this,
782                                                       (m) -> firstTrueHelper(m.getBits()));
783         }
784 
785         @Override
786         @ForceInline
787         public int lastTrue() {
788             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_LASTTRUE, Byte256Mask.class, byte.class, VLENGTH, this,
789                                                       (m) -> lastTrueHelper(m.getBits()));
790         }
791 
792         @Override
793         @ForceInline
794         public long toLong() {
795             if (length() > Long.SIZE) {
796                 throw new UnsupportedOperationException("too many lanes for one long");
797             }
798             return VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TOLONG, Byte256Mask.class, byte.class, VLENGTH, this,
799                                                       (m) -> toLongHelper(m.getBits()));
800         }
801 
802         // Reductions
803 
804         @Override
805         @ForceInline
806         public boolean anyTrue() {
807             return VectorSupport.test(BT_ne, Byte256Mask.class, byte.class, VLENGTH,
808                                          this, vspecies().maskAll(true),
809                                          (m, __) -> anyTrueHelper(((Byte256Mask)m).getBits()));
810         }
811 
812         @Override
813         @ForceInline
814         public boolean allTrue() {
815             return VectorSupport.test(BT_overflow, Byte256Mask.class, byte.class, VLENGTH,
816                                          this, vspecies().maskAll(true),
817                                          (m, __) -> allTrueHelper(((Byte256Mask)m).getBits()));
818         }
819 
820         @ForceInline
821         /*package-private*/
822         static Byte256Mask maskAll(boolean bit) {
823             return VectorSupport.fromBitsCoerced(Byte256Mask.class, byte.class, VLENGTH,
824                                                  (bit ? -1 : 0), MODE_BROADCAST, null,
825                                                  (v, __) -> (v != 0 ? TRUE_MASK : FALSE_MASK));
826         }
827         private static final Byte256Mask  TRUE_MASK = new Byte256Mask(true);
828         private static final Byte256Mask FALSE_MASK = new Byte256Mask(false);
829 
830     }
831 
832     // Shuffle
833 
834     static final class Byte256Shuffle extends AbstractShuffle<Byte> {
835         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
836         static final Class<Byte> ETYPE = byte.class; // used by the JVM
837 
838         Byte256Shuffle(byte[] reorder) {
839             super(VLENGTH, reorder);
840         }
841 
842         public Byte256Shuffle(int[] reorder) {
843             super(VLENGTH, reorder);
844         }
845 
846         public Byte256Shuffle(int[] reorder, int i) {
847             super(VLENGTH, reorder, i);
848         }
849 
850         public Byte256Shuffle(IntUnaryOperator fn) {
851             super(VLENGTH, fn);
852         }
853 
854         @Override
855         public ByteSpecies vspecies() {
856             return VSPECIES;
857         }
858 
859         static {
860             // There must be enough bits in the shuffle lanes to encode
861             // VLENGTH valid indexes and VLENGTH exceptional ones.
862             assert(VLENGTH < Byte.MAX_VALUE);
863             assert(Byte.MIN_VALUE <= -VLENGTH);
864         }
865         static final Byte256Shuffle IOTA = new Byte256Shuffle(IDENTITY);
866 
867         @Override
868         @ForceInline
869         public Byte256Vector toVector() {
870             return VectorSupport.shuffleToVector(VCLASS, ETYPE, Byte256Shuffle.class, this, VLENGTH,
871                                                     (s) -> ((Byte256Vector)(((AbstractShuffle<Byte>)(s)).toVectorTemplate())));
872         }
873 
874         @Override
875         @ForceInline
876         public <F> VectorShuffle<F> cast(VectorSpecies<F> s) {
877             AbstractSpecies<F> species = (AbstractSpecies<F>) s;
878             if (length() != species.laneCount())
879                 throw new IllegalArgumentException("VectorShuffle length and species length differ");
880             int[] shuffleArray = toArray();
881             return s.shuffleFromArray(shuffleArray, 0).check(s);
882         }
883 
884         @ForceInline
885         @Override
886         public Byte256Shuffle rearrange(VectorShuffle<Byte> shuffle) {
887             Byte256Shuffle s = (Byte256Shuffle) shuffle;
888             byte[] reorder1 = reorder();
889             byte[] reorder2 = s.reorder();
890             byte[] r = new byte[reorder1.length];
891             for (int i = 0; i < reorder1.length; i++) {
892                 int ssi = reorder2[i];
893                 r[i] = reorder1[ssi];  // throws on exceptional index
894             }
895             return new Byte256Shuffle(r);
896         }
897     }
898 
899     // ================================================
900 
901     // Specialized low-level memory operations.
902 
903     @ForceInline
904     @Override
905     final
906     ByteVector fromArray0(byte[] a, int offset) {
907         return super.fromArray0Template(a, offset);  // specialize
908     }
909 
910     @ForceInline
911     @Override
912     final
913     ByteVector fromArray0(byte[] a, int offset, VectorMask<Byte> m) {
914         return super.fromArray0Template(Byte256Mask.class, a, offset, (Byte256Mask) m);  // specialize
915     }
916 
917 
918 
919     @ForceInline
920     @Override
921     final
922     ByteVector fromBooleanArray0(boolean[] a, int offset) {
923         return super.fromBooleanArray0Template(a, offset);  // specialize
924     }
925 
926     @ForceInline
927     @Override
928     final
929     ByteVector fromBooleanArray0(boolean[] a, int offset, VectorMask<Byte> m) {
930         return super.fromBooleanArray0Template(Byte256Mask.class, a, offset, (Byte256Mask) m);  // specialize
931     }
932 
933     @ForceInline
934     @Override
935     final
936     ByteVector fromMemorySegment0(MemorySegment ms, long offset) {
937         return super.fromMemorySegment0Template(ms, offset);  // specialize
938     }
939 
940     @ForceInline
941     @Override
942     final
943     ByteVector fromMemorySegment0(MemorySegment ms, long offset, VectorMask<Byte> m) {
944         return super.fromMemorySegment0Template(Byte256Mask.class, ms, offset, (Byte256Mask) m);  // specialize
945     }
946 
947     @ForceInline
948     @Override
949     final
950     void intoArray0(byte[] a, int offset) {
951         super.intoArray0Template(a, offset);  // specialize
952     }
953 
954     @ForceInline
955     @Override
956     final
957     void intoArray0(byte[] a, int offset, VectorMask<Byte> m) {
958         super.intoArray0Template(Byte256Mask.class, a, offset, (Byte256Mask) m);
959     }
960 
961 
962     @ForceInline
963     @Override
964     final
965     void intoBooleanArray0(boolean[] a, int offset, VectorMask<Byte> m) {
966         super.intoBooleanArray0Template(Byte256Mask.class, a, offset, (Byte256Mask) m);
967     }
968 
969     @ForceInline
970     @Override
971     final
972     void intoMemorySegment0(MemorySegment ms, long offset, VectorMask<Byte> m) {
973         super.intoMemorySegment0Template(Byte256Mask.class, ms, offset, (Byte256Mask) m);
974     }
975 
976 
977     // End of specialized low-level memory operations.
978 
979     // ================================================
980 
981 }