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 ByteMaxVector extends ByteVector {
 43     static final ByteSpecies VSPECIES =
 44         (ByteSpecies) ByteVector.SPECIES_MAX;
 45 
 46     static final VectorShape VSHAPE =
 47         VSPECIES.vectorShape();
 48 
 49     static final Class<ByteMaxVector> VCLASS = ByteMaxVector.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     ByteMaxVector(byte[] v) {
 58         super(v);
 59     }
 60 
 61     // For compatibility as ByteMaxVector::new,
 62     // stored into species.vectorFactory.
 63     ByteMaxVector(Object v) {
 64         this((byte[]) v);
 65     }
 66 
 67     static final ByteMaxVector ZERO = new ByteMaxVector(new byte[VLENGTH]);
 68     static final ByteMaxVector IOTA = new ByteMaxVector(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 ByteMaxVector broadcast(byte e) {
125         return (ByteMaxVector) super.broadcastTemplate(e);  // specialize
126     }
127 
128     @Override
129     @ForceInline
130     public final ByteMaxVector broadcast(long e) {
131         return (ByteMaxVector) super.broadcastTemplate(e);  // specialize
132     }
133 
134     @Override
135     @ForceInline
136     ByteMaxMask maskFromArray(boolean[] bits) {
137         return new ByteMaxMask(bits);
138     }
139 
140     @Override
141     @ForceInline
142     ByteMaxShuffle iotaShuffle() { return ByteMaxShuffle.IOTA; }
143 
144     @ForceInline
145     ByteMaxShuffle iotaShuffle(int start, int step, boolean wrap) {
146       if (wrap) {
147         return (ByteMaxShuffle)VectorSupport.shuffleIota(ETYPE, ByteMaxShuffle.class, VSPECIES, VLENGTH, start, step, 1,
148                 (l, lstart, lstep, s) -> s.shuffleFromOp(i -> (VectorIntrinsics.wrapToRange(i*lstep + lstart, l))));
149       } else {
150         return (ByteMaxShuffle)VectorSupport.shuffleIota(ETYPE, ByteMaxShuffle.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     ByteMaxShuffle shuffleFromBytes(byte[] reorder) { return new ByteMaxShuffle(reorder); }
158 
159     @Override
160     @ForceInline
161     ByteMaxShuffle shuffleFromArray(int[] indexes, int i) { return new ByteMaxShuffle(indexes, i); }
162 
163     @Override
164     @ForceInline
165     ByteMaxShuffle shuffleFromOp(IntUnaryOperator fn) { return new ByteMaxShuffle(fn); }
166 
167     // Make a vector of the same species but the given elements:
168     @ForceInline
169     final @Override
170     ByteMaxVector vectorFactory(byte[] vec) {
171         return new ByteMaxVector(vec);
172     }
173 
174     @ForceInline
175     final @Override
176     ByteMaxVector asByteVectorRaw() {
177         return (ByteMaxVector) 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     ByteMaxVector uOp(FUnOp f) {
191         return (ByteMaxVector) super.uOpTemplate(f);  // specialize
192     }
193 
194     @ForceInline
195     final @Override
196     ByteMaxVector uOp(VectorMask<Byte> m, FUnOp f) {
197         return (ByteMaxVector)
198             super.uOpTemplate((ByteMaxMask)m, f);  // specialize
199     }
200 
201     // Binary operator
202 
203     @ForceInline
204     final @Override
205     ByteMaxVector bOp(Vector<Byte> v, FBinOp f) {
206         return (ByteMaxVector) super.bOpTemplate((ByteMaxVector)v, f);  // specialize
207     }
208 
209     @ForceInline
210     final @Override
211     ByteMaxVector bOp(Vector<Byte> v,
212                      VectorMask<Byte> m, FBinOp f) {
213         return (ByteMaxVector)
214             super.bOpTemplate((ByteMaxVector)v, (ByteMaxMask)m,
215                               f);  // specialize
216     }
217 
218     // Ternary operator
219 
220     @ForceInline
221     final @Override
222     ByteMaxVector tOp(Vector<Byte> v1, Vector<Byte> v2, FTriOp f) {
223         return (ByteMaxVector)
224             super.tOpTemplate((ByteMaxVector)v1, (ByteMaxVector)v2,
225                               f);  // specialize
226     }
227 
228     @ForceInline
229     final @Override
230     ByteMaxVector tOp(Vector<Byte> v1, Vector<Byte> v2,
231                      VectorMask<Byte> m, FTriOp f) {
232         return (ByteMaxVector)
233             super.tOpTemplate((ByteMaxVector)v1, (ByteMaxVector)v2,
234                               (ByteMaxMask)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 ByteMaxVector lanewise(Unary op) {
273         return (ByteMaxVector) super.lanewiseTemplate(op);  // specialize
274     }
275 
276     @Override
277     @ForceInline
278     public ByteMaxVector lanewise(Unary op, VectorMask<Byte> m) {
279         return (ByteMaxVector) super.lanewiseTemplate(op, ByteMaxMask.class, (ByteMaxMask) m);  // specialize
280     }
281 
282     @Override
283     @ForceInline
284     public ByteMaxVector lanewise(Binary op, Vector<Byte> v) {
285         return (ByteMaxVector) super.lanewiseTemplate(op, v);  // specialize
286     }
287 
288     @Override
289     @ForceInline
290     public ByteMaxVector lanewise(Binary op, Vector<Byte> v, VectorMask<Byte> m) {
291         return (ByteMaxVector) super.lanewiseTemplate(op, ByteMaxMask.class, v, (ByteMaxMask) m);  // specialize
292     }
293 
294     /*package-private*/
295     @Override
296     @ForceInline ByteMaxVector
297     lanewiseShift(VectorOperators.Binary op, int e) {
298         return (ByteMaxVector) super.lanewiseShiftTemplate(op, e);  // specialize
299     }
300 
301     /*package-private*/
302     @Override
303     @ForceInline ByteMaxVector
304     lanewiseShift(VectorOperators.Binary op, int e, VectorMask<Byte> m) {
305         return (ByteMaxVector) super.lanewiseShiftTemplate(op, ByteMaxMask.class, e, (ByteMaxMask) m);  // specialize
306     }
307 
308     /*package-private*/
309     @Override
310     @ForceInline
311     public final
312     ByteMaxVector
313     lanewise(Ternary op, Vector<Byte> v1, Vector<Byte> v2) {
314         return (ByteMaxVector) super.lanewiseTemplate(op, v1, v2);  // specialize
315     }
316 
317     @Override
318     @ForceInline
319     public final
320     ByteMaxVector
321     lanewise(Ternary op, Vector<Byte> v1, Vector<Byte> v2, VectorMask<Byte> m) {
322         return (ByteMaxVector) super.lanewiseTemplate(op, ByteMaxMask.class, v1, v2, (ByteMaxMask) m);  // specialize
323     }
324 
325     @Override
326     @ForceInline
327     public final
328     ByteMaxVector addIndex(int scale) {
329         return (ByteMaxVector) 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, ByteMaxMask.class, (ByteMaxMask) 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, ByteMaxMask.class, (ByteMaxMask) m);  // specialized
358     }
359 
360     @ForceInline
361     public VectorShuffle<Byte> toShuffle() {
362         return super.toShuffleTemplate(ByteMaxShuffle.class); // specialize
363     }
364 
365     // Specialized unary testing
366 
367     @Override
368     @ForceInline
369     public final ByteMaxMask test(Test op) {
370         return super.testTemplate(ByteMaxMask.class, op);  // specialize
371     }
372 
373     @Override
374     @ForceInline
375     public final ByteMaxMask test(Test op, VectorMask<Byte> m) {
376         return super.testTemplate(ByteMaxMask.class, op, (ByteMaxMask) m);  // specialize
377     }
378 
379     // Specialized comparisons
380 
381     @Override
382     @ForceInline
383     public final ByteMaxMask compare(Comparison op, Vector<Byte> v) {
384         return super.compareTemplate(ByteMaxMask.class, op, v);  // specialize
385     }
386 
387     @Override
388     @ForceInline
389     public final ByteMaxMask compare(Comparison op, byte s) {
390         return super.compareTemplate(ByteMaxMask.class, op, s);  // specialize
391     }
392 
393     @Override
394     @ForceInline
395     public final ByteMaxMask compare(Comparison op, long s) {
396         return super.compareTemplate(ByteMaxMask.class, op, s);  // specialize
397     }
398 
399     @Override
400     @ForceInline
401     public final ByteMaxMask compare(Comparison op, Vector<Byte> v, VectorMask<Byte> m) {
402         return super.compareTemplate(ByteMaxMask.class, op, v, (ByteMaxMask) m);
403     }
404 
405 
406     @Override
407     @ForceInline
408     public ByteMaxVector blend(Vector<Byte> v, VectorMask<Byte> m) {
409         return (ByteMaxVector)
410             super.blendTemplate(ByteMaxMask.class,
411                                 (ByteMaxVector) v,
412                                 (ByteMaxMask) m);  // specialize
413     }
414 
415     @Override
416     @ForceInline
417     public ByteMaxVector slice(int origin, Vector<Byte> v) {
418         return (ByteMaxVector) super.sliceTemplate(origin, v);  // specialize
419     }
420 
421     @Override
422     @ForceInline
423     public ByteMaxVector slice(int origin) {
424         return (ByteMaxVector) super.sliceTemplate(origin);  // specialize
425     }
426 
427     @Override
428     @ForceInline
429     public ByteMaxVector unslice(int origin, Vector<Byte> w, int part) {
430         return (ByteMaxVector) super.unsliceTemplate(origin, w, part);  // specialize
431     }
432 
433     @Override
434     @ForceInline
435     public ByteMaxVector unslice(int origin, Vector<Byte> w, int part, VectorMask<Byte> m) {
436         return (ByteMaxVector)
437             super.unsliceTemplate(ByteMaxMask.class,
438                                   origin, w, part,
439                                   (ByteMaxMask) m);  // specialize
440     }
441 
442     @Override
443     @ForceInline
444     public ByteMaxVector unslice(int origin) {
445         return (ByteMaxVector) super.unsliceTemplate(origin);  // specialize
446     }
447 
448     @Override
449     @ForceInline
450     public ByteMaxVector rearrange(VectorShuffle<Byte> s) {
451         return (ByteMaxVector)
452             super.rearrangeTemplate(ByteMaxShuffle.class,
453                                     (ByteMaxShuffle) s);  // specialize
454     }
455 
456     @Override
457     @ForceInline
458     public ByteMaxVector rearrange(VectorShuffle<Byte> shuffle,
459                                   VectorMask<Byte> m) {
460         return (ByteMaxVector)
461             super.rearrangeTemplate(ByteMaxShuffle.class,
462                                     ByteMaxMask.class,
463                                     (ByteMaxShuffle) shuffle,
464                                     (ByteMaxMask) m);  // specialize
465     }
466 
467     @Override
468     @ForceInline
469     public ByteMaxVector rearrange(VectorShuffle<Byte> s,
470                                   Vector<Byte> v) {
471         return (ByteMaxVector)
472             super.rearrangeTemplate(ByteMaxShuffle.class,
473                                     (ByteMaxShuffle) s,
474                                     (ByteMaxVector) v);  // specialize
475     }
476 
477     @Override
478     @ForceInline
479     public ByteMaxVector compress(VectorMask<Byte> m) {
480         return (ByteMaxVector)
481             super.compressTemplate(ByteMaxMask.class,
482                                    (ByteMaxMask) m);  // specialize
483     }
484 
485     @Override
486     @ForceInline
487     public ByteMaxVector expand(VectorMask<Byte> m) {
488         return (ByteMaxVector)
489             super.expandTemplate(ByteMaxMask.class,
490                                    (ByteMaxMask) m);  // specialize
491     }
492 
493     @Override
494     @ForceInline
495     public ByteMaxVector selectFrom(Vector<Byte> v) {
496         return (ByteMaxVector)
497             super.selectFromTemplate((ByteMaxVector) v);  // specialize
498     }
499 
500     @Override
501     @ForceInline
502     public ByteMaxVector selectFrom(Vector<Byte> v,
503                                    VectorMask<Byte> m) {
504         return (ByteMaxVector)
505             super.selectFromTemplate((ByteMaxVector) v,
506                                      (ByteMaxMask) m);  // specialize
507     }
508 
509 
510     @ForceInline
511     @Override
512     public byte lane(int i) {
513         if (i < 0 || i >= VLENGTH) {
514             throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
515         }
516         return laneHelper(i);
517     }
518 
519     public byte laneHelper(int i) {
520         return (byte) VectorSupport.extract(
521                                 VCLASS, ETYPE, VLENGTH,
522                                 this, i,
523                                 (vec, ix) -> {
524                                     byte[] vecarr = vec.vec();
525                                     return (long)vecarr[ix];
526                                 });
527     }
528 
529     @ForceInline
530     @Override
531     public ByteMaxVector withLane(int i, byte e) {
532         if (i < 0 || i >= VLENGTH) {
533             throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
534         }
535         return withLaneHelper(i, e);
536     }
537 
538     public ByteMaxVector withLaneHelper(int i, byte e) {
539         return VectorSupport.insert(
540                                 VCLASS, ETYPE, VLENGTH,
541                                 this, i, (long)e,
542                                 (v, ix, bits) -> {
543                                     byte[] res = v.vec().clone();
544                                     res[ix] = (byte)bits;
545                                     return v.vectorFactory(res);
546                                 });
547     }
548 
549     // Mask
550 
551     static final class ByteMaxMask extends AbstractMask<Byte> {
552         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
553         static final Class<Byte> ETYPE = byte.class; // used by the JVM
554 
555         ByteMaxMask(boolean[] bits) {
556             this(bits, 0);
557         }
558 
559         ByteMaxMask(boolean[] bits, int offset) {
560             super(prepare(bits, offset));
561         }
562 
563         ByteMaxMask(boolean val) {
564             super(prepare(val));
565         }
566 
567         private static boolean[] prepare(boolean[] bits, int offset) {
568             boolean[] newBits = new boolean[VSPECIES.laneCount()];
569             for (int i = 0; i < newBits.length; i++) {
570                 newBits[i] = bits[offset + i];
571             }
572             return newBits;
573         }
574 
575         private static boolean[] prepare(boolean val) {
576             boolean[] bits = new boolean[VSPECIES.laneCount()];
577             Arrays.fill(bits, val);
578             return bits;
579         }
580 
581         @ForceInline
582         final @Override
583         public ByteSpecies vspecies() {
584             // ISSUE:  This should probably be a @Stable
585             // field inside AbstractMask, rather than
586             // a megamorphic method.
587             return VSPECIES;
588         }
589 
590         @ForceInline
591         boolean[] getBits() {
592             return (boolean[])getPayload();
593         }
594 
595         @Override
596         ByteMaxMask uOp(MUnOp f) {
597             boolean[] res = new boolean[vspecies().laneCount()];
598             boolean[] bits = getBits();
599             for (int i = 0; i < res.length; i++) {
600                 res[i] = f.apply(i, bits[i]);
601             }
602             return new ByteMaxMask(res);
603         }
604 
605         @Override
606         ByteMaxMask bOp(VectorMask<Byte> m, MBinOp f) {
607             boolean[] res = new boolean[vspecies().laneCount()];
608             boolean[] bits = getBits();
609             boolean[] mbits = ((ByteMaxMask)m).getBits();
610             for (int i = 0; i < res.length; i++) {
611                 res[i] = f.apply(i, bits[i], mbits[i]);
612             }
613             return new ByteMaxMask(res);
614         }
615 
616         @ForceInline
617         @Override
618         public final
619         ByteMaxVector toVector() {
620             return (ByteMaxVector) super.toVectorTemplate();  // specialize
621         }
622 
623         /**
624          * Helper function for lane-wise mask conversions.
625          * This function kicks in after intrinsic failure.
626          */
627         @ForceInline
628         private final <E>
629         VectorMask<E> defaultMaskCast(AbstractSpecies<E> dsp) {
630             if (length() != dsp.laneCount())
631                 throw new IllegalArgumentException("VectorMask length and species length differ");
632             boolean[] maskArray = toArray();
633             return  dsp.maskFactory(maskArray).check(dsp);
634         }
635 
636         @Override
637         @ForceInline
638         public <E> VectorMask<E> cast(VectorSpecies<E> dsp) {
639             AbstractSpecies<E> species = (AbstractSpecies<E>) dsp;
640             if (length() != species.laneCount())
641                 throw new IllegalArgumentException("VectorMask length and species length differ");
642 
643             return VectorSupport.convert(VectorSupport.VECTOR_OP_CAST,
644                 this.getClass(), ETYPE, VLENGTH,
645                 species.maskType(), species.elementType(), VLENGTH,
646                 this, species,
647                 (m, s) -> s.maskFactory(m.toArray()).check(s));
648         }
649 
650         @Override
651         @ForceInline
652         public ByteMaxMask eq(VectorMask<Byte> mask) {
653             Objects.requireNonNull(mask);
654             ByteMaxMask m = (ByteMaxMask)mask;
655             return xor(m.not());
656         }
657 
658         // Unary operations
659 
660         @Override
661         @ForceInline
662         public ByteMaxMask not() {
663             return xor(maskAll(true));
664         }
665 
666         @Override
667         @ForceInline
668         public ByteMaxMask compress() {
669             return (ByteMaxMask)VectorSupport.comExpOp(VectorSupport.VECTOR_OP_MASK_COMPRESS,
670                 ByteMaxVector.class, ByteMaxMask.class, ETYPE, VLENGTH, null, this,
671                 (v1, m1) -> VSPECIES.iota().compare(VectorOperators.LT, m1.trueCount()));
672         }
673 
674 
675         // Binary operations
676 
677         @Override
678         @ForceInline
679         public ByteMaxMask and(VectorMask<Byte> mask) {
680             Objects.requireNonNull(mask);
681             ByteMaxMask m = (ByteMaxMask)mask;
682             return VectorSupport.binaryOp(VECTOR_OP_AND, ByteMaxMask.class, null, byte.class, VLENGTH,
683                                           this, m, null,
684                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a & b));
685         }
686 
687         @Override
688         @ForceInline
689         public ByteMaxMask or(VectorMask<Byte> mask) {
690             Objects.requireNonNull(mask);
691             ByteMaxMask m = (ByteMaxMask)mask;
692             return VectorSupport.binaryOp(VECTOR_OP_OR, ByteMaxMask.class, null, byte.class, VLENGTH,
693                                           this, m, null,
694                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a | b));
695         }
696 
697         @ForceInline
698         /* package-private */
699         ByteMaxMask xor(VectorMask<Byte> mask) {
700             Objects.requireNonNull(mask);
701             ByteMaxMask m = (ByteMaxMask)mask;
702             return VectorSupport.binaryOp(VECTOR_OP_XOR, ByteMaxMask.class, null, byte.class, VLENGTH,
703                                           this, m, null,
704                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a ^ b));
705         }
706 
707         // Mask Query operations
708 
709         @Override
710         @ForceInline
711         public int trueCount() {
712             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TRUECOUNT, ByteMaxMask.class, byte.class, VLENGTH, this,
713                                                       (m) -> trueCountHelper(m.getBits()));
714         }
715 
716         @Override
717         @ForceInline
718         public int firstTrue() {
719             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_FIRSTTRUE, ByteMaxMask.class, byte.class, VLENGTH, this,
720                                                       (m) -> firstTrueHelper(m.getBits()));
721         }
722 
723         @Override
724         @ForceInline
725         public int lastTrue() {
726             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_LASTTRUE, ByteMaxMask.class, byte.class, VLENGTH, this,
727                                                       (m) -> lastTrueHelper(m.getBits()));
728         }
729 
730         @Override
731         @ForceInline
732         public long toLong() {
733             if (length() > Long.SIZE) {
734                 throw new UnsupportedOperationException("too many lanes for one long");
735             }
736             return VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TOLONG, ByteMaxMask.class, byte.class, VLENGTH, this,
737                                                       (m) -> toLongHelper(m.getBits()));
738         }
739 
740         // Reductions
741 
742         @Override
743         @ForceInline
744         public boolean anyTrue() {
745             return VectorSupport.test(BT_ne, ByteMaxMask.class, byte.class, VLENGTH,
746                                          this, vspecies().maskAll(true),
747                                          (m, __) -> anyTrueHelper(((ByteMaxMask)m).getBits()));
748         }
749 
750         @Override
751         @ForceInline
752         public boolean allTrue() {
753             return VectorSupport.test(BT_overflow, ByteMaxMask.class, byte.class, VLENGTH,
754                                          this, vspecies().maskAll(true),
755                                          (m, __) -> allTrueHelper(((ByteMaxMask)m).getBits()));
756         }
757 
758         @ForceInline
759         /*package-private*/
760         static ByteMaxMask maskAll(boolean bit) {
761             return VectorSupport.fromBitsCoerced(ByteMaxMask.class, byte.class, VLENGTH,
762                                                  (bit ? -1 : 0), MODE_BROADCAST, null,
763                                                  (v, __) -> (v != 0 ? TRUE_MASK : FALSE_MASK));
764         }
765         private static final ByteMaxMask  TRUE_MASK = new ByteMaxMask(true);
766         private static final ByteMaxMask FALSE_MASK = new ByteMaxMask(false);
767 
768     }
769 
770     // Shuffle
771 
772     static final class ByteMaxShuffle extends AbstractShuffle<Byte> {
773         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
774         static final Class<Byte> ETYPE = byte.class; // used by the JVM
775 
776         ByteMaxShuffle(byte[] reorder) {
777             super(VLENGTH, reorder);
778         }
779 
780         public ByteMaxShuffle(int[] reorder) {
781             super(VLENGTH, reorder);
782         }
783 
784         public ByteMaxShuffle(int[] reorder, int i) {
785             super(VLENGTH, reorder, i);
786         }
787 
788         public ByteMaxShuffle(IntUnaryOperator fn) {
789             super(VLENGTH, fn);
790         }
791 
792         @Override
793         public ByteSpecies vspecies() {
794             return VSPECIES;
795         }
796 
797         static {
798             // There must be enough bits in the shuffle lanes to encode
799             // VLENGTH valid indexes and VLENGTH exceptional ones.
800             assert(VLENGTH < Byte.MAX_VALUE);
801             assert(Byte.MIN_VALUE <= -VLENGTH);
802         }
803         static final ByteMaxShuffle IOTA = new ByteMaxShuffle(IDENTITY);
804 
805         @Override
806         @ForceInline
807         public ByteMaxVector toVector() {
808             return VectorSupport.shuffleToVector(VCLASS, ETYPE, ByteMaxShuffle.class, this, VLENGTH,
809                                                     (s) -> ((ByteMaxVector)(((AbstractShuffle<Byte>)(s)).toVectorTemplate())));
810         }
811 
812         @Override
813         @ForceInline
814         public <F> VectorShuffle<F> cast(VectorSpecies<F> s) {
815             AbstractSpecies<F> species = (AbstractSpecies<F>) s;
816             if (length() != species.laneCount())
817                 throw new IllegalArgumentException("VectorShuffle length and species length differ");
818             int[] shuffleArray = toArray();
819             return s.shuffleFromArray(shuffleArray, 0).check(s);
820         }
821 
822         @ForceInline
823         @Override
824         public ByteMaxShuffle rearrange(VectorShuffle<Byte> shuffle) {
825             ByteMaxShuffle s = (ByteMaxShuffle) shuffle;
826             byte[] reorder1 = reorder();
827             byte[] reorder2 = s.reorder();
828             byte[] r = new byte[reorder1.length];
829             for (int i = 0; i < reorder1.length; i++) {
830                 int ssi = reorder2[i];
831                 r[i] = reorder1[ssi];  // throws on exceptional index
832             }
833             return new ByteMaxShuffle(r);
834         }
835     }
836 
837     // ================================================
838 
839     // Specialized low-level memory operations.
840 
841     @ForceInline
842     @Override
843     final
844     ByteVector fromArray0(byte[] a, int offset) {
845         return super.fromArray0Template(a, offset);  // specialize
846     }
847 
848     @ForceInline
849     @Override
850     final
851     ByteVector fromArray0(byte[] a, int offset, VectorMask<Byte> m) {
852         return super.fromArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);  // specialize
853     }
854 
855 
856 
857     @ForceInline
858     @Override
859     final
860     ByteVector fromBooleanArray0(boolean[] a, int offset) {
861         return super.fromBooleanArray0Template(a, offset);  // specialize
862     }
863 
864     @ForceInline
865     @Override
866     final
867     ByteVector fromBooleanArray0(boolean[] a, int offset, VectorMask<Byte> m) {
868         return super.fromBooleanArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);  // specialize
869     }
870 
871     @ForceInline
872     @Override
873     final
874     ByteVector fromMemorySegment0(MemorySegment ms, long offset) {
875         return super.fromMemorySegment0Template(ms, offset);  // specialize
876     }
877 
878     @ForceInline
879     @Override
880     final
881     ByteVector fromMemorySegment0(MemorySegment ms, long offset, VectorMask<Byte> m) {
882         return super.fromMemorySegment0Template(ByteMaxMask.class, ms, offset, (ByteMaxMask) m);  // specialize
883     }
884 
885     @ForceInline
886     @Override
887     final
888     void intoArray0(byte[] a, int offset) {
889         super.intoArray0Template(a, offset);  // specialize
890     }
891 
892     @ForceInline
893     @Override
894     final
895     void intoArray0(byte[] a, int offset, VectorMask<Byte> m) {
896         super.intoArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);
897     }
898 
899 
900     @ForceInline
901     @Override
902     final
903     void intoBooleanArray0(boolean[] a, int offset, VectorMask<Byte> m) {
904         super.intoBooleanArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);
905     }
906 
907     @ForceInline
908     @Override
909     final
910     void intoMemorySegment0(MemorySegment ms, long offset, VectorMask<Byte> m) {
911         super.intoMemorySegment0Template(ByteMaxMask.class, ms, offset, (ByteMaxMask) m);
912     }
913 
914 
915     // End of specialized low-level memory operations.
916 
917     // ================================================
918 
919 }