1 /*
  2  * Copyright (c) 2017, 2021, 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 Int256Vector extends IntVector {
 43     static final IntSpecies VSPECIES =
 44         (IntSpecies) IntVector.SPECIES_256;
 45 
 46     static final VectorShape VSHAPE =
 47         VSPECIES.vectorShape();
 48 
 49     static final Class<Int256Vector> VCLASS = Int256Vector.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<Integer> ETYPE = int.class; // used by the JVM
 56 
 57     Int256Vector(int[] v) {
 58         super(v);
 59     }
 60 
 61     // For compatibility as Int256Vector::new,
 62     // stored into species.vectorFactory.
 63     Int256Vector(Object v) {
 64         this((int[]) v);
 65     }
 66 
 67     static final Int256Vector ZERO = new Int256Vector(new int[VLENGTH]);
 68     static final Int256Vector IOTA = new Int256Vector(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 IntSpecies 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<Integer> elementType() { return int.class; }
 92 
 93     @ForceInline
 94     @Override
 95     public final int elementSize() { return Integer.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     int[] vec() {
117         return (int[])getPayload();
118     }
119 
120     // Virtualized constructors
121 
122     @Override
123     @ForceInline
124     public final Int256Vector broadcast(int e) {
125         return (Int256Vector) super.broadcastTemplate(e);  // specialize
126     }
127 
128     @Override
129     @ForceInline
130     public final Int256Vector broadcast(long e) {
131         return (Int256Vector) super.broadcastTemplate(e);  // specialize
132     }
133 
134     @Override
135     @ForceInline
136     Int256Mask maskFromArray(boolean[] bits) {
137         return new Int256Mask(bits);
138     }
139 
140     @Override
141     @ForceInline
142     Int256Shuffle iotaShuffle() { return Int256Shuffle.IOTA; }
143 
144     @ForceInline
145     Int256Shuffle iotaShuffle(int start, int step, boolean wrap) {
146       if (wrap) {
147         return (Int256Shuffle)VectorSupport.shuffleIota(ETYPE, Int256Shuffle.class, VSPECIES, VLENGTH, start, step, 1,
148                 (l, lstart, lstep, s) -> s.shuffleFromOp(i -> (VectorIntrinsics.wrapToRange(i*lstep + lstart, l))));
149       } else {
150         return (Int256Shuffle)VectorSupport.shuffleIota(ETYPE, Int256Shuffle.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     Int256Shuffle shuffleFromBytes(byte[] reorder) { return new Int256Shuffle(reorder); }
158 
159     @Override
160     @ForceInline
161     Int256Shuffle shuffleFromArray(int[] indexes, int i) { return new Int256Shuffle(indexes, i); }
162 
163     @Override
164     @ForceInline
165     Int256Shuffle shuffleFromOp(IntUnaryOperator fn) { return new Int256Shuffle(fn); }
166 
167     // Make a vector of the same species but the given elements:
168     @ForceInline
169     final @Override
170     Int256Vector vectorFactory(int[] vec) {
171         return new Int256Vector(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     Int256Vector uOp(FUnOp f) {
191         return (Int256Vector) super.uOpTemplate(f);  // specialize
192     }
193 
194     @ForceInline
195     final @Override
196     Int256Vector uOp(VectorMask<Integer> m, FUnOp f) {
197         return (Int256Vector)
198             super.uOpTemplate((Int256Mask)m, f);  // specialize
199     }
200 
201     // Binary operator
202 
203     @ForceInline
204     final @Override
205     Int256Vector bOp(Vector<Integer> v, FBinOp f) {
206         return (Int256Vector) super.bOpTemplate((Int256Vector)v, f);  // specialize
207     }
208 
209     @ForceInline
210     final @Override
211     Int256Vector bOp(Vector<Integer> v,
212                      VectorMask<Integer> m, FBinOp f) {
213         return (Int256Vector)
214             super.bOpTemplate((Int256Vector)v, (Int256Mask)m,
215                               f);  // specialize
216     }
217 
218     // Ternary operator
219 
220     @ForceInline
221     final @Override
222     Int256Vector tOp(Vector<Integer> v1, Vector<Integer> v2, FTriOp f) {
223         return (Int256Vector)
224             super.tOpTemplate((Int256Vector)v1, (Int256Vector)v2,
225                               f);  // specialize
226     }
227 
228     @ForceInline
229     final @Override
230     Int256Vector tOp(Vector<Integer> v1, Vector<Integer> v2,
231                      VectorMask<Integer> m, FTriOp f) {
232         return (Int256Vector)
233             super.tOpTemplate((Int256Vector)v1, (Int256Vector)v2,
234                               (Int256Mask)m, f);  // specialize
235     }
236 
237     @ForceInline
238     final @Override
239     int rOp(int v, VectorMask<Integer> 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<Integer,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 Int256Vector lanewise(Unary op) {
273         return (Int256Vector) super.lanewiseTemplate(op);  // specialize
274     }
275 
276     @Override
277     @ForceInline
278     public Int256Vector lanewise(Unary op, VectorMask<Integer> m) {
279         return (Int256Vector) super.lanewiseTemplate(op, Int256Mask.class, (Int256Mask) m);  // specialize
280     }
281 
282     @Override
283     @ForceInline
284     public Int256Vector lanewise(Binary op, Vector<Integer> v) {
285         return (Int256Vector) super.lanewiseTemplate(op, v);  // specialize
286     }
287 
288     @Override
289     @ForceInline
290     public Int256Vector lanewise(Binary op, Vector<Integer> v, VectorMask<Integer> m) {
291         return (Int256Vector) super.lanewiseTemplate(op, Int256Mask.class, v, (Int256Mask) m);  // specialize
292     }
293 
294     /*package-private*/
295     @Override
296     @ForceInline Int256Vector
297     lanewiseShift(VectorOperators.Binary op, int e) {
298         return (Int256Vector) super.lanewiseShiftTemplate(op, e);  // specialize
299     }
300 
301     /*package-private*/
302     @Override
303     @ForceInline Int256Vector
304     lanewiseShift(VectorOperators.Binary op, int e, VectorMask<Integer> m) {
305         return (Int256Vector) super.lanewiseShiftTemplate(op, Int256Mask.class, e, (Int256Mask) m);  // specialize
306     }
307 
308     /*package-private*/
309     @Override
310     @ForceInline
311     public final
312     Int256Vector
313     lanewise(Ternary op, Vector<Integer> v1, Vector<Integer> v2) {
314         return (Int256Vector) super.lanewiseTemplate(op, v1, v2);  // specialize
315     }
316 
317     @Override
318     @ForceInline
319     public final
320     Int256Vector
321     lanewise(Ternary op, Vector<Integer> v1, Vector<Integer> v2, VectorMask<Integer> m) {
322         return (Int256Vector) super.lanewiseTemplate(op, Int256Mask.class, v1, v2, (Int256Mask) m);  // specialize
323     }
324 
325     @Override
326     @ForceInline
327     public final
328     Int256Vector addIndex(int scale) {
329         return (Int256Vector) super.addIndexTemplate(scale);  // specialize
330     }
331 
332     // Type specific horizontal reductions
333 
334     @Override
335     @ForceInline
336     public final int reduceLanes(VectorOperators.Associative op) {
337         return super.reduceLanesTemplate(op);  // specialized
338     }
339 
340     @Override
341     @ForceInline
342     public final int reduceLanes(VectorOperators.Associative op,
343                                     VectorMask<Integer> m) {
344         return super.reduceLanesTemplate(op, Int256Mask.class, (Int256Mask) 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<Integer> m) {
357         return (long) super.reduceLanesTemplate(op, Int256Mask.class, (Int256Mask) m);  // specialized
358     }
359 
360     @ForceInline
361     public VectorShuffle<Integer> toShuffle() {
362         return super.toShuffleTemplate(Int256Shuffle.class); // specialize
363     }
364 
365     // Specialized unary testing
366 
367     @Override
368     @ForceInline
369     public final Int256Mask test(Test op) {
370         return super.testTemplate(Int256Mask.class, op);  // specialize
371     }
372 
373     // Specialized comparisons
374 
375     @Override
376     @ForceInline
377     public final Int256Mask compare(Comparison op, Vector<Integer> v) {
378         return super.compareTemplate(Int256Mask.class, op, v);  // specialize
379     }
380 
381     @Override
382     @ForceInline
383     public final Int256Mask compare(Comparison op, int s) {
384         return super.compareTemplate(Int256Mask.class, op, s);  // specialize
385     }
386 
387     @Override
388     @ForceInline
389     public final Int256Mask compare(Comparison op, long s) {
390         return super.compareTemplate(Int256Mask.class, op, s);  // specialize
391     }
392 
393     @Override
394     @ForceInline
395     public final Int256Mask compare(Comparison op, Vector<Integer> v, VectorMask<Integer> m) {
396         return super.compareTemplate(Int256Mask.class, op, v, (Int256Mask) m);
397     }
398 
399 
400     @Override
401     @ForceInline
402     public Int256Vector blend(Vector<Integer> v, VectorMask<Integer> m) {
403         return (Int256Vector)
404             super.blendTemplate(Int256Mask.class,
405                                 (Int256Vector) v,
406                                 (Int256Mask) m);  // specialize
407     }
408 
409     @Override
410     @ForceInline
411     public Int256Vector slice(int origin, Vector<Integer> v) {
412         return (Int256Vector) super.sliceTemplate(origin, v);  // specialize
413     }
414 
415     @Override
416     @ForceInline
417     public Int256Vector slice(int origin) {
418         return (Int256Vector) super.sliceTemplate(origin);  // specialize
419     }
420 
421     @Override
422     @ForceInline
423     public Int256Vector unslice(int origin, Vector<Integer> w, int part) {
424         return (Int256Vector) super.unsliceTemplate(origin, w, part);  // specialize
425     }
426 
427     @Override
428     @ForceInline
429     public Int256Vector unslice(int origin, Vector<Integer> w, int part, VectorMask<Integer> m) {
430         return (Int256Vector)
431             super.unsliceTemplate(Int256Mask.class,
432                                   origin, w, part,
433                                   (Int256Mask) m);  // specialize
434     }
435 
436     @Override
437     @ForceInline
438     public Int256Vector unslice(int origin) {
439         return (Int256Vector) super.unsliceTemplate(origin);  // specialize
440     }
441 
442     @Override
443     @ForceInline
444     public Int256Vector rearrange(VectorShuffle<Integer> s) {
445         return (Int256Vector)
446             super.rearrangeTemplate(Int256Shuffle.class,
447                                     (Int256Shuffle) s);  // specialize
448     }
449 
450     @Override
451     @ForceInline
452     public Int256Vector rearrange(VectorShuffle<Integer> shuffle,
453                                   VectorMask<Integer> m) {
454         return (Int256Vector)
455             super.rearrangeTemplate(Int256Shuffle.class,
456                                     Int256Mask.class,
457                                     (Int256Shuffle) shuffle,
458                                     (Int256Mask) m);  // specialize
459     }
460 
461     @Override
462     @ForceInline
463     public Int256Vector rearrange(VectorShuffle<Integer> s,
464                                   Vector<Integer> v) {
465         return (Int256Vector)
466             super.rearrangeTemplate(Int256Shuffle.class,
467                                     (Int256Shuffle) s,
468                                     (Int256Vector) v);  // specialize
469     }
470 
471     @Override
472     @ForceInline
473     public Int256Vector selectFrom(Vector<Integer> v) {
474         return (Int256Vector)
475             super.selectFromTemplate((Int256Vector) v);  // specialize
476     }
477 
478     @Override
479     @ForceInline
480     public Int256Vector selectFrom(Vector<Integer> v,
481                                    VectorMask<Integer> m) {
482         return (Int256Vector)
483             super.selectFromTemplate((Int256Vector) v,
484                                      (Int256Mask) m);  // specialize
485     }
486 
487 
488     @ForceInline
489     @Override
490     public int lane(int i) {
491         switch(i) {
492             case 0: return laneHelper(0);
493             case 1: return laneHelper(1);
494             case 2: return laneHelper(2);
495             case 3: return laneHelper(3);
496             case 4: return laneHelper(4);
497             case 5: return laneHelper(5);
498             case 6: return laneHelper(6);
499             case 7: return laneHelper(7);
500             default: throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
501         }
502     }
503 
504     public int laneHelper(int i) {
505         return (int) VectorSupport.extract(
506                                 VCLASS, ETYPE, VLENGTH,
507                                 this, i,
508                                 (vec, ix) -> {
509                                     int[] vecarr = vec.vec();
510                                     return (long)vecarr[ix];
511                                 });
512     }
513 
514     @ForceInline
515     @Override
516     public Int256Vector withLane(int i, int e) {
517         switch (i) {
518             case 0: return withLaneHelper(0, e);
519             case 1: return withLaneHelper(1, e);
520             case 2: return withLaneHelper(2, e);
521             case 3: return withLaneHelper(3, e);
522             case 4: return withLaneHelper(4, e);
523             case 5: return withLaneHelper(5, e);
524             case 6: return withLaneHelper(6, e);
525             case 7: return withLaneHelper(7, e);
526             default: throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
527         }
528     }
529 
530     public Int256Vector withLaneHelper(int i, int e) {
531         return VectorSupport.insert(
532                                 VCLASS, ETYPE, VLENGTH,
533                                 this, i, (long)e,
534                                 (v, ix, bits) -> {
535                                     int[] res = v.vec().clone();
536                                     res[ix] = (int)bits;
537                                     return v.vectorFactory(res);
538                                 });
539     }
540 
541     // Mask
542 
543     static final class Int256Mask extends AbstractMask<Integer> {
544         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
545         static final Class<Integer> ETYPE = int.class; // used by the JVM
546 
547         Int256Mask(boolean[] bits) {
548             this(bits, 0);
549         }
550 
551         Int256Mask(boolean[] bits, int offset) {
552             super(prepare(bits, offset));
553         }
554 
555         Int256Mask(boolean val) {
556             super(prepare(val));
557         }
558 
559         private static boolean[] prepare(boolean[] bits, int offset) {
560             boolean[] newBits = new boolean[VSPECIES.laneCount()];
561             for (int i = 0; i < newBits.length; i++) {
562                 newBits[i] = bits[offset + i];
563             }
564             return newBits;
565         }
566 
567         private static boolean[] prepare(boolean val) {
568             boolean[] bits = new boolean[VSPECIES.laneCount()];
569             Arrays.fill(bits, val);
570             return bits;
571         }
572 
573         @ForceInline
574         final @Override
575         public IntSpecies vspecies() {
576             // ISSUE:  This should probably be a @Stable
577             // field inside AbstractMask, rather than
578             // a megamorphic method.
579             return VSPECIES;
580         }
581 
582         @ForceInline
583         boolean[] getBits() {
584             return (boolean[])getPayload();
585         }
586 
587         @Override
588         Int256Mask uOp(MUnOp f) {
589             boolean[] res = new boolean[vspecies().laneCount()];
590             boolean[] bits = getBits();
591             for (int i = 0; i < res.length; i++) {
592                 res[i] = f.apply(i, bits[i]);
593             }
594             return new Int256Mask(res);
595         }
596 
597         @Override
598         Int256Mask bOp(VectorMask<Integer> m, MBinOp f) {
599             boolean[] res = new boolean[vspecies().laneCount()];
600             boolean[] bits = getBits();
601             boolean[] mbits = ((Int256Mask)m).getBits();
602             for (int i = 0; i < res.length; i++) {
603                 res[i] = f.apply(i, bits[i], mbits[i]);
604             }
605             return new Int256Mask(res);
606         }
607 
608         @ForceInline
609         @Override
610         public final
611         Int256Vector toVector() {
612             return (Int256Vector) super.toVectorTemplate();  // specialize
613         }
614 
615         /**
616          * Helper function for lane-wise mask conversions.
617          * This function kicks in after intrinsic failure.
618          */
619         @ForceInline
620         private final <E>
621         VectorMask<E> defaultMaskCast(AbstractSpecies<E> dsp) {
622             if (length() != dsp.laneCount())
623                 throw new IllegalArgumentException("VectorMask length and species length differ");
624             boolean[] maskArray = toArray();
625             return  dsp.maskFactory(maskArray).check(dsp);
626         }
627 
628         @Override
629         @ForceInline
630         public <E> VectorMask<E> cast(VectorSpecies<E> dsp) {
631             AbstractSpecies<E> species = (AbstractSpecies<E>) dsp;
632             if (length() != species.laneCount())
633                 throw new IllegalArgumentException("VectorMask length and species length differ");
634 
635             return VectorSupport.convert(VectorSupport.VECTOR_OP_CAST,
636                 this.getClass(), ETYPE, VLENGTH,
637                 species.maskType(), species.elementType(), VLENGTH,
638                 this, species,
639                 (m, s) -> s.maskFactory(m.toArray()).check(s));
640         }
641 
642         @Override
643         @ForceInline
644         public Int256Mask eq(VectorMask<Integer> mask) {
645             Objects.requireNonNull(mask);
646             Int256Mask m = (Int256Mask)mask;
647             return xor(m.not());
648         }
649 
650         // Unary operations
651 
652         @Override
653         @ForceInline
654         public Int256Mask not() {
655             return xor(maskAll(true));
656         }
657 
658         // Binary operations
659 
660         @Override
661         @ForceInline
662         public Int256Mask and(VectorMask<Integer> mask) {
663             Objects.requireNonNull(mask);
664             Int256Mask m = (Int256Mask)mask;
665             return VectorSupport.binaryOp(VECTOR_OP_AND, Int256Mask.class, null, int.class, VLENGTH,
666                                           this, m, null,
667                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a & b));
668         }
669 
670         @Override
671         @ForceInline
672         public Int256Mask or(VectorMask<Integer> mask) {
673             Objects.requireNonNull(mask);
674             Int256Mask m = (Int256Mask)mask;
675             return VectorSupport.binaryOp(VECTOR_OP_OR, Int256Mask.class, null, int.class, VLENGTH,
676                                           this, m, null,
677                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a | b));
678         }
679 
680         @ForceInline
681         /* package-private */
682         Int256Mask xor(VectorMask<Integer> mask) {
683             Objects.requireNonNull(mask);
684             Int256Mask m = (Int256Mask)mask;
685             return VectorSupport.binaryOp(VECTOR_OP_XOR, Int256Mask.class, null, int.class, VLENGTH,
686                                           this, m, null,
687                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a ^ b));
688         }
689 
690         // Mask Query operations
691 
692         @Override
693         @ForceInline
694         public int trueCount() {
695             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TRUECOUNT, Int256Mask.class, int.class, VLENGTH, this,
696                                                       (m) -> trueCountHelper(m.getBits()));
697         }
698 
699         @Override
700         @ForceInline
701         public int firstTrue() {
702             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_FIRSTTRUE, Int256Mask.class, int.class, VLENGTH, this,
703                                                       (m) -> firstTrueHelper(m.getBits()));
704         }
705 
706         @Override
707         @ForceInline
708         public int lastTrue() {
709             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_LASTTRUE, Int256Mask.class, int.class, VLENGTH, this,
710                                                       (m) -> lastTrueHelper(m.getBits()));
711         }
712 
713         @Override
714         @ForceInline
715         public long toLong() {
716             if (length() > Long.SIZE) {
717                 throw new UnsupportedOperationException("too many lanes for one long");
718             }
719             return VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TOLONG, Int256Mask.class, int.class, VLENGTH, this,
720                                                       (m) -> toLongHelper(m.getBits()));
721         }
722 
723         // Reductions
724 
725         @Override
726         @ForceInline
727         public boolean anyTrue() {
728             return VectorSupport.test(BT_ne, Int256Mask.class, int.class, VLENGTH,
729                                          this, vspecies().maskAll(true),
730                                          (m, __) -> anyTrueHelper(((Int256Mask)m).getBits()));
731         }
732 
733         @Override
734         @ForceInline
735         public boolean allTrue() {
736             return VectorSupport.test(BT_overflow, Int256Mask.class, int.class, VLENGTH,
737                                          this, vspecies().maskAll(true),
738                                          (m, __) -> allTrueHelper(((Int256Mask)m).getBits()));
739         }
740 
741         @ForceInline
742         /*package-private*/
743         static Int256Mask maskAll(boolean bit) {
744             return VectorSupport.broadcastCoerced(Int256Mask.class, int.class, VLENGTH,
745                                                   (bit ? -1 : 0), null,
746                                                   (v, __) -> (v != 0 ? TRUE_MASK : FALSE_MASK));
747         }
748         private static final Int256Mask  TRUE_MASK = new Int256Mask(true);
749         private static final Int256Mask FALSE_MASK = new Int256Mask(false);
750 
751     }
752 
753     // Shuffle
754 
755     static final class Int256Shuffle extends AbstractShuffle<Integer> {
756         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
757         static final Class<Integer> ETYPE = int.class; // used by the JVM
758 
759         Int256Shuffle(byte[] reorder) {
760             super(VLENGTH, reorder);
761         }
762 
763         public Int256Shuffle(int[] reorder) {
764             super(VLENGTH, reorder);
765         }
766 
767         public Int256Shuffle(int[] reorder, int i) {
768             super(VLENGTH, reorder, i);
769         }
770 
771         public Int256Shuffle(IntUnaryOperator fn) {
772             super(VLENGTH, fn);
773         }
774 
775         @Override
776         public IntSpecies vspecies() {
777             return VSPECIES;
778         }
779 
780         static {
781             // There must be enough bits in the shuffle lanes to encode
782             // VLENGTH valid indexes and VLENGTH exceptional ones.
783             assert(VLENGTH < Byte.MAX_VALUE);
784             assert(Byte.MIN_VALUE <= -VLENGTH);
785         }
786         static final Int256Shuffle IOTA = new Int256Shuffle(IDENTITY);
787 
788         @Override
789         @ForceInline
790         public Int256Vector toVector() {
791             return VectorSupport.shuffleToVector(VCLASS, ETYPE, Int256Shuffle.class, this, VLENGTH,
792                                                     (s) -> ((Int256Vector)(((AbstractShuffle<Integer>)(s)).toVectorTemplate())));
793         }
794 
795         @Override
796         @ForceInline
797         public <F> VectorShuffle<F> cast(VectorSpecies<F> s) {
798             AbstractSpecies<F> species = (AbstractSpecies<F>) s;
799             if (length() != species.laneCount())
800                 throw new IllegalArgumentException("VectorShuffle length and species length differ");
801             int[] shuffleArray = toArray();
802             return s.shuffleFromArray(shuffleArray, 0).check(s);
803         }
804 
805         @ForceInline
806         @Override
807         public Int256Shuffle rearrange(VectorShuffle<Integer> shuffle) {
808             Int256Shuffle s = (Int256Shuffle) shuffle;
809             byte[] reorder1 = reorder();
810             byte[] reorder2 = s.reorder();
811             byte[] r = new byte[reorder1.length];
812             for (int i = 0; i < reorder1.length; i++) {
813                 int ssi = reorder2[i];
814                 r[i] = reorder1[ssi];  // throws on exceptional index
815             }
816             return new Int256Shuffle(r);
817         }
818     }
819 
820     // ================================================
821 
822     // Specialized low-level memory operations.
823 
824     @ForceInline
825     @Override
826     final
827     IntVector fromArray0(int[] a, int offset) {
828         return super.fromArray0Template(a, offset);  // specialize
829     }
830 
831     @ForceInline
832     @Override
833     final
834     IntVector fromArray0(int[] a, int offset, VectorMask<Integer> m) {
835         return super.fromArray0Template(Int256Mask.class, a, offset, (Int256Mask) m);  // specialize
836     }
837 
838     @ForceInline
839     @Override
840     final
841     IntVector fromArray0(int[] a, int offset, int[] indexMap, int mapOffset, VectorMask<Integer> m) {
842         return super.fromArray0Template(Int256Mask.class, a, offset, indexMap, mapOffset, (Int256Mask) m);
843     }
844 
845 
846 
847     @ForceInline
848     @Override
849     final
850     IntVector fromByteArray0(byte[] a, int offset) {
851         return super.fromByteArray0Template(a, offset);  // specialize
852     }
853 
854     @ForceInline
855     @Override
856     final
857     IntVector fromByteArray0(byte[] a, int offset, VectorMask<Integer> m) {
858         return super.fromByteArray0Template(Int256Mask.class, a, offset, (Int256Mask) m);  // specialize
859     }
860 
861     @ForceInline
862     @Override
863     final
864     IntVector fromByteBuffer0(ByteBuffer bb, int offset) {
865         return super.fromByteBuffer0Template(bb, offset);  // specialize
866     }
867 
868     @ForceInline
869     @Override
870     final
871     IntVector fromByteBuffer0(ByteBuffer bb, int offset, VectorMask<Integer> m) {
872         return super.fromByteBuffer0Template(Int256Mask.class, bb, offset, (Int256Mask) m);  // specialize
873     }
874 
875     @ForceInline
876     @Override
877     final
878     void intoArray0(int[] a, int offset) {
879         super.intoArray0Template(a, offset);  // specialize
880     }
881 
882     @ForceInline
883     @Override
884     final
885     void intoArray0(int[] a, int offset, VectorMask<Integer> m) {
886         super.intoArray0Template(Int256Mask.class, a, offset, (Int256Mask) m);
887     }
888 
889     @ForceInline
890     @Override
891     final
892     void intoArray0(int[] a, int offset, int[] indexMap, int mapOffset, VectorMask<Integer> m) {
893         super.intoArray0Template(Int256Mask.class, a, offset, indexMap, mapOffset, (Int256Mask) m);
894     }
895 
896 
897     @ForceInline
898     @Override
899     final
900     void intoByteArray0(byte[] a, int offset) {
901         super.intoByteArray0Template(a, offset);  // specialize
902     }
903 
904     @ForceInline
905     @Override
906     final
907     void intoByteArray0(byte[] a, int offset, VectorMask<Integer> m) {
908         super.intoByteArray0Template(Int256Mask.class, a, offset, (Int256Mask) m);  // specialize
909     }
910 
911     @ForceInline
912     @Override
913     final
914     void intoByteBuffer0(ByteBuffer bb, int offset, VectorMask<Integer> m) {
915         super.intoByteBuffer0Template(Int256Mask.class, bb, offset, (Int256Mask) m);
916     }
917 
918 
919     // End of specialized low-level memory operations.
920 
921     // ================================================
922 
923 }