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.nio.ByteBuffer;
 28 import java.util.Arrays;
 29 import java.util.Objects;
 30 import java.util.function.IntUnaryOperator;
 31 
 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 selectFrom(Vector<Byte> v) {
480         return (ByteMaxVector)
481             super.selectFromTemplate((ByteMaxVector) v);  // specialize
482     }
483 
484     @Override
485     @ForceInline
486     public ByteMaxVector selectFrom(Vector<Byte> v,
487                                    VectorMask<Byte> m) {
488         return (ByteMaxVector)
489             super.selectFromTemplate((ByteMaxVector) v,
490                                      (ByteMaxMask) m);  // specialize
491     }
492 
493 
494     @ForceInline
495     @Override
496     public byte lane(int i) {
497         if (i < 0 || i >= VLENGTH) {
498             throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
499         }
500         return laneHelper(i);
501     }
502 
503     public byte laneHelper(int i) {
504         return (byte) VectorSupport.extract(
505                                 VCLASS, ETYPE, VLENGTH,
506                                 this, i,
507                                 (vec, ix) -> {
508                                     byte[] vecarr = vec.vec();
509                                     return (long)vecarr[ix];
510                                 });
511     }
512 
513     @ForceInline
514     @Override
515     public ByteMaxVector withLane(int i, byte e) {
516         if (i < 0 || i >= VLENGTH) {
517             throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
518         }
519         return withLaneHelper(i, e);
520     }
521 
522     public ByteMaxVector withLaneHelper(int i, byte e) {
523         return VectorSupport.insert(
524                                 VCLASS, ETYPE, VLENGTH,
525                                 this, i, (long)e,
526                                 (v, ix, bits) -> {
527                                     byte[] res = v.vec().clone();
528                                     res[ix] = (byte)bits;
529                                     return v.vectorFactory(res);
530                                 });
531     }
532 
533     // Mask
534 
535     static final class ByteMaxMask extends AbstractMask<Byte> {
536         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
537         static final Class<Byte> ETYPE = byte.class; // used by the JVM
538 
539         ByteMaxMask(boolean[] bits) {
540             this(bits, 0);
541         }
542 
543         ByteMaxMask(boolean[] bits, int offset) {
544             super(prepare(bits, offset));
545         }
546 
547         ByteMaxMask(boolean val) {
548             super(prepare(val));
549         }
550 
551         private static boolean[] prepare(boolean[] bits, int offset) {
552             boolean[] newBits = new boolean[VSPECIES.laneCount()];
553             for (int i = 0; i < newBits.length; i++) {
554                 newBits[i] = bits[offset + i];
555             }
556             return newBits;
557         }
558 
559         private static boolean[] prepare(boolean val) {
560             boolean[] bits = new boolean[VSPECIES.laneCount()];
561             Arrays.fill(bits, val);
562             return bits;
563         }
564 
565         @ForceInline
566         final @Override
567         public ByteSpecies vspecies() {
568             // ISSUE:  This should probably be a @Stable
569             // field inside AbstractMask, rather than
570             // a megamorphic method.
571             return VSPECIES;
572         }
573 
574         @ForceInline
575         boolean[] getBits() {
576             return (boolean[])getPayload();
577         }
578 
579         @Override
580         ByteMaxMask uOp(MUnOp f) {
581             boolean[] res = new boolean[vspecies().laneCount()];
582             boolean[] bits = getBits();
583             for (int i = 0; i < res.length; i++) {
584                 res[i] = f.apply(i, bits[i]);
585             }
586             return new ByteMaxMask(res);
587         }
588 
589         @Override
590         ByteMaxMask bOp(VectorMask<Byte> m, MBinOp f) {
591             boolean[] res = new boolean[vspecies().laneCount()];
592             boolean[] bits = getBits();
593             boolean[] mbits = ((ByteMaxMask)m).getBits();
594             for (int i = 0; i < res.length; i++) {
595                 res[i] = f.apply(i, bits[i], mbits[i]);
596             }
597             return new ByteMaxMask(res);
598         }
599 
600         @ForceInline
601         @Override
602         public final
603         ByteMaxVector toVector() {
604             return (ByteMaxVector) super.toVectorTemplate();  // specialize
605         }
606 
607         /**
608          * Helper function for lane-wise mask conversions.
609          * This function kicks in after intrinsic failure.
610          */
611         @ForceInline
612         private final <E>
613         VectorMask<E> defaultMaskCast(AbstractSpecies<E> dsp) {
614             if (length() != dsp.laneCount())
615                 throw new IllegalArgumentException("VectorMask length and species length differ");
616             boolean[] maskArray = toArray();
617             return  dsp.maskFactory(maskArray).check(dsp);
618         }
619 
620         @Override
621         @ForceInline
622         public <E> VectorMask<E> cast(VectorSpecies<E> dsp) {
623             AbstractSpecies<E> species = (AbstractSpecies<E>) dsp;
624             if (length() != species.laneCount())
625                 throw new IllegalArgumentException("VectorMask length and species length differ");
626 
627             return VectorSupport.convert(VectorSupport.VECTOR_OP_CAST,
628                 this.getClass(), ETYPE, VLENGTH,
629                 species.maskType(), species.elementType(), VLENGTH,
630                 this, species,
631                 (m, s) -> s.maskFactory(m.toArray()).check(s));
632         }
633 
634         @Override
635         @ForceInline
636         public ByteMaxMask eq(VectorMask<Byte> mask) {
637             Objects.requireNonNull(mask);
638             ByteMaxMask m = (ByteMaxMask)mask;
639             return xor(m.not());
640         }
641 
642         // Unary operations
643 
644         @Override
645         @ForceInline
646         public ByteMaxMask not() {
647             return xor(maskAll(true));
648         }
649 
650         // Binary operations
651 
652         @Override
653         @ForceInline
654         public ByteMaxMask and(VectorMask<Byte> mask) {
655             Objects.requireNonNull(mask);
656             ByteMaxMask m = (ByteMaxMask)mask;
657             return VectorSupport.binaryOp(VECTOR_OP_AND, ByteMaxMask.class, null, byte.class, VLENGTH,
658                                           this, m, null,
659                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a & b));
660         }
661 
662         @Override
663         @ForceInline
664         public ByteMaxMask or(VectorMask<Byte> mask) {
665             Objects.requireNonNull(mask);
666             ByteMaxMask m = (ByteMaxMask)mask;
667             return VectorSupport.binaryOp(VECTOR_OP_OR, ByteMaxMask.class, null, byte.class, VLENGTH,
668                                           this, m, null,
669                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a | b));
670         }
671 
672         @ForceInline
673         /* package-private */
674         ByteMaxMask xor(VectorMask<Byte> mask) {
675             Objects.requireNonNull(mask);
676             ByteMaxMask m = (ByteMaxMask)mask;
677             return VectorSupport.binaryOp(VECTOR_OP_XOR, ByteMaxMask.class, null, byte.class, VLENGTH,
678                                           this, m, null,
679                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a ^ b));
680         }
681 
682         // Mask Query operations
683 
684         @Override
685         @ForceInline
686         public int trueCount() {
687             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TRUECOUNT, ByteMaxMask.class, byte.class, VLENGTH, this,
688                                                       (m) -> trueCountHelper(m.getBits()));
689         }
690 
691         @Override
692         @ForceInline
693         public int firstTrue() {
694             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_FIRSTTRUE, ByteMaxMask.class, byte.class, VLENGTH, this,
695                                                       (m) -> firstTrueHelper(m.getBits()));
696         }
697 
698         @Override
699         @ForceInline
700         public int lastTrue() {
701             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_LASTTRUE, ByteMaxMask.class, byte.class, VLENGTH, this,
702                                                       (m) -> lastTrueHelper(m.getBits()));
703         }
704 
705         @Override
706         @ForceInline
707         public long toLong() {
708             if (length() > Long.SIZE) {
709                 throw new UnsupportedOperationException("too many lanes for one long");
710             }
711             return VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TOLONG, ByteMaxMask.class, byte.class, VLENGTH, this,
712                                                       (m) -> toLongHelper(m.getBits()));
713         }
714 
715         // Reductions
716 
717         @Override
718         @ForceInline
719         public boolean anyTrue() {
720             return VectorSupport.test(BT_ne, ByteMaxMask.class, byte.class, VLENGTH,
721                                          this, vspecies().maskAll(true),
722                                          (m, __) -> anyTrueHelper(((ByteMaxMask)m).getBits()));
723         }
724 
725         @Override
726         @ForceInline
727         public boolean allTrue() {
728             return VectorSupport.test(BT_overflow, ByteMaxMask.class, byte.class, VLENGTH,
729                                          this, vspecies().maskAll(true),
730                                          (m, __) -> allTrueHelper(((ByteMaxMask)m).getBits()));
731         }
732 
733         @ForceInline
734         /*package-private*/
735         static ByteMaxMask maskAll(boolean bit) {
736             return VectorSupport.fromBitsCoerced(ByteMaxMask.class, byte.class, VLENGTH,
737                                                  (bit ? -1 : 0), MODE_BROADCAST, null,
738                                                  (v, __) -> (v != 0 ? TRUE_MASK : FALSE_MASK));
739         }
740         private static final ByteMaxMask  TRUE_MASK = new ByteMaxMask(true);
741         private static final ByteMaxMask FALSE_MASK = new ByteMaxMask(false);
742 
743     }
744 
745     // Shuffle
746 
747     static final class ByteMaxShuffle extends AbstractShuffle<Byte> {
748         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
749         static final Class<Byte> ETYPE = byte.class; // used by the JVM
750 
751         ByteMaxShuffle(byte[] reorder) {
752             super(VLENGTH, reorder);
753         }
754 
755         public ByteMaxShuffle(int[] reorder) {
756             super(VLENGTH, reorder);
757         }
758 
759         public ByteMaxShuffle(int[] reorder, int i) {
760             super(VLENGTH, reorder, i);
761         }
762 
763         public ByteMaxShuffle(IntUnaryOperator fn) {
764             super(VLENGTH, fn);
765         }
766 
767         @Override
768         public ByteSpecies vspecies() {
769             return VSPECIES;
770         }
771 
772         static {
773             // There must be enough bits in the shuffle lanes to encode
774             // VLENGTH valid indexes and VLENGTH exceptional ones.
775             assert(VLENGTH < Byte.MAX_VALUE);
776             assert(Byte.MIN_VALUE <= -VLENGTH);
777         }
778         static final ByteMaxShuffle IOTA = new ByteMaxShuffle(IDENTITY);
779 
780         @Override
781         @ForceInline
782         public ByteMaxVector toVector() {
783             return VectorSupport.shuffleToVector(VCLASS, ETYPE, ByteMaxShuffle.class, this, VLENGTH,
784                                                     (s) -> ((ByteMaxVector)(((AbstractShuffle<Byte>)(s)).toVectorTemplate())));
785         }
786 
787         @Override
788         @ForceInline
789         public <F> VectorShuffle<F> cast(VectorSpecies<F> s) {
790             AbstractSpecies<F> species = (AbstractSpecies<F>) s;
791             if (length() != species.laneCount())
792                 throw new IllegalArgumentException("VectorShuffle length and species length differ");
793             int[] shuffleArray = toArray();
794             return s.shuffleFromArray(shuffleArray, 0).check(s);
795         }
796 
797         @ForceInline
798         @Override
799         public ByteMaxShuffle rearrange(VectorShuffle<Byte> shuffle) {
800             ByteMaxShuffle s = (ByteMaxShuffle) shuffle;
801             byte[] reorder1 = reorder();
802             byte[] reorder2 = s.reorder();
803             byte[] r = new byte[reorder1.length];
804             for (int i = 0; i < reorder1.length; i++) {
805                 int ssi = reorder2[i];
806                 r[i] = reorder1[ssi];  // throws on exceptional index
807             }
808             return new ByteMaxShuffle(r);
809         }
810     }
811 
812     // ================================================
813 
814     // Specialized low-level memory operations.
815 
816     @ForceInline
817     @Override
818     final
819     ByteVector fromArray0(byte[] a, int offset) {
820         return super.fromArray0Template(a, offset);  // specialize
821     }
822 
823     @ForceInline
824     @Override
825     final
826     ByteVector fromArray0(byte[] a, int offset, VectorMask<Byte> m) {
827         return super.fromArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);  // specialize
828     }
829 
830 
831 
832     @ForceInline
833     @Override
834     final
835     ByteVector fromBooleanArray0(boolean[] a, int offset) {
836         return super.fromBooleanArray0Template(a, offset);  // specialize
837     }
838 
839     @ForceInline
840     @Override
841     final
842     ByteVector fromBooleanArray0(boolean[] a, int offset, VectorMask<Byte> m) {
843         return super.fromBooleanArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);  // specialize
844     }
845 
846     @ForceInline
847     @Override
848     final
849     ByteVector fromByteArray0(byte[] a, int offset) {
850         return super.fromByteArray0Template(a, offset);  // specialize
851     }
852 
853     @ForceInline
854     @Override
855     final
856     ByteVector fromByteArray0(byte[] a, int offset, VectorMask<Byte> m) {
857         return super.fromByteArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);  // specialize
858     }
859 
860     @ForceInline
861     @Override
862     final
863     ByteVector fromByteBuffer0(ByteBuffer bb, int offset) {
864         return super.fromByteBuffer0Template(bb, offset);  // specialize
865     }
866 
867     @ForceInline
868     @Override
869     final
870     ByteVector fromByteBuffer0(ByteBuffer bb, int offset, VectorMask<Byte> m) {
871         return super.fromByteBuffer0Template(ByteMaxMask.class, bb, offset, (ByteMaxMask) m);  // specialize
872     }
873 
874     @ForceInline
875     @Override
876     final
877     void intoArray0(byte[] a, int offset) {
878         super.intoArray0Template(a, offset);  // specialize
879     }
880 
881     @ForceInline
882     @Override
883     final
884     void intoArray0(byte[] a, int offset, VectorMask<Byte> m) {
885         super.intoArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);
886     }
887 
888 
889     @ForceInline
890     @Override
891     final
892     void intoBooleanArray0(boolean[] a, int offset, VectorMask<Byte> m) {
893         super.intoBooleanArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);
894     }
895 
896     @ForceInline
897     @Override
898     final
899     void intoByteArray0(byte[] a, int offset) {
900         super.intoByteArray0Template(a, offset);  // specialize
901     }
902 
903     @ForceInline
904     @Override
905     final
906     void intoByteArray0(byte[] a, int offset, VectorMask<Byte> m) {
907         super.intoByteArray0Template(ByteMaxMask.class, a, offset, (ByteMaxMask) m);  // specialize
908     }
909 
910     @ForceInline
911     @Override
912     final
913     void intoByteBuffer0(ByteBuffer bb, int offset, VectorMask<Byte> m) {
914         super.intoByteBuffer0Template(ByteMaxMask.class, bb, offset, (ByteMaxMask) m);
915     }
916 
917 
918     // End of specialized low-level memory operations.
919 
920     // ================================================
921 
922 }