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 Double128Vector extends DoubleVector {
 43     static final DoubleSpecies VSPECIES =
 44         (DoubleSpecies) DoubleVector.SPECIES_128;
 45 
 46     static final VectorShape VSHAPE =
 47         VSPECIES.vectorShape();
 48 
 49     static final Class<Double128Vector> VCLASS = Double128Vector.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<Double> ETYPE = double.class; // used by the JVM
 56 
 57     Double128Vector(double[] v) {
 58         super(v);
 59     }
 60 
 61     // For compatibility as Double128Vector::new,
 62     // stored into species.vectorFactory.
 63     Double128Vector(Object v) {
 64         this((double[]) v);
 65     }
 66 
 67     static final Double128Vector ZERO = new Double128Vector(new double[VLENGTH]);
 68     static final Double128Vector IOTA = new Double128Vector(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 DoubleSpecies 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<Double> elementType() { return double.class; }
 92 
 93     @ForceInline
 94     @Override
 95     public final int elementSize() { return Double.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     double[] vec() {
117         return (double[])getPayload();
118     }
119 
120     // Virtualized constructors
121 
122     @Override
123     @ForceInline
124     public final Double128Vector broadcast(double e) {
125         return (Double128Vector) super.broadcastTemplate(e);  // specialize
126     }
127 
128     @Override
129     @ForceInline
130     public final Double128Vector broadcast(long e) {
131         return (Double128Vector) super.broadcastTemplate(e);  // specialize
132     }
133 
134     @Override
135     @ForceInline
136     Double128Mask maskFromArray(boolean[] bits) {
137         return new Double128Mask(bits);
138     }
139 
140     @Override
141     @ForceInline
142     Double128Shuffle iotaShuffle() { return Double128Shuffle.IOTA; }
143 
144     @ForceInline
145     Double128Shuffle iotaShuffle(int start, int step, boolean wrap) {
146       if (wrap) {
147         return (Double128Shuffle)VectorSupport.shuffleIota(ETYPE, Double128Shuffle.class, VSPECIES, VLENGTH, start, step, 1,
148                 (l, lstart, lstep, s) -> s.shuffleFromOp(i -> (VectorIntrinsics.wrapToRange(i*lstep + lstart, l))));
149       } else {
150         return (Double128Shuffle)VectorSupport.shuffleIota(ETYPE, Double128Shuffle.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     Double128Shuffle shuffleFromBytes(byte[] reorder) { return new Double128Shuffle(reorder); }
158 
159     @Override
160     @ForceInline
161     Double128Shuffle shuffleFromArray(int[] indexes, int i) { return new Double128Shuffle(indexes, i); }
162 
163     @Override
164     @ForceInline
165     Double128Shuffle shuffleFromOp(IntUnaryOperator fn) { return new Double128Shuffle(fn); }
166 
167     // Make a vector of the same species but the given elements:
168     @ForceInline
169     final @Override
170     Double128Vector vectorFactory(double[] vec) {
171         return new Double128Vector(vec);
172     }
173 
174     @ForceInline
175     final @Override
176     Byte128Vector asByteVectorRaw() {
177         return (Byte128Vector) 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     Double128Vector uOp(FUnOp f) {
191         return (Double128Vector) super.uOpTemplate(f);  // specialize
192     }
193 
194     @ForceInline
195     final @Override
196     Double128Vector uOp(VectorMask<Double> m, FUnOp f) {
197         return (Double128Vector)
198             super.uOpTemplate((Double128Mask)m, f);  // specialize
199     }
200 
201     // Binary operator
202 
203     @ForceInline
204     final @Override
205     Double128Vector bOp(Vector<Double> v, FBinOp f) {
206         return (Double128Vector) super.bOpTemplate((Double128Vector)v, f);  // specialize
207     }
208 
209     @ForceInline
210     final @Override
211     Double128Vector bOp(Vector<Double> v,
212                      VectorMask<Double> m, FBinOp f) {
213         return (Double128Vector)
214             super.bOpTemplate((Double128Vector)v, (Double128Mask)m,
215                               f);  // specialize
216     }
217 
218     // Ternary operator
219 
220     @ForceInline
221     final @Override
222     Double128Vector tOp(Vector<Double> v1, Vector<Double> v2, FTriOp f) {
223         return (Double128Vector)
224             super.tOpTemplate((Double128Vector)v1, (Double128Vector)v2,
225                               f);  // specialize
226     }
227 
228     @ForceInline
229     final @Override
230     Double128Vector tOp(Vector<Double> v1, Vector<Double> v2,
231                      VectorMask<Double> m, FTriOp f) {
232         return (Double128Vector)
233             super.tOpTemplate((Double128Vector)v1, (Double128Vector)v2,
234                               (Double128Mask)m, f);  // specialize
235     }
236 
237     @ForceInline
238     final @Override
239     double rOp(double v, VectorMask<Double> 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<Double,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 Double128Vector lanewise(Unary op) {
273         return (Double128Vector) super.lanewiseTemplate(op);  // specialize
274     }
275 
276     @Override
277     @ForceInline
278     public Double128Vector lanewise(Unary op, VectorMask<Double> m) {
279         return (Double128Vector) super.lanewiseTemplate(op, Double128Mask.class, (Double128Mask) m);  // specialize
280     }
281 
282     @Override
283     @ForceInline
284     public Double128Vector lanewise(Binary op, Vector<Double> v) {
285         return (Double128Vector) super.lanewiseTemplate(op, v);  // specialize
286     }
287 
288     @Override
289     @ForceInline
290     public Double128Vector lanewise(Binary op, Vector<Double> v, VectorMask<Double> m) {
291         return (Double128Vector) super.lanewiseTemplate(op, Double128Mask.class, v, (Double128Mask) m);  // specialize
292     }
293 
294 
295     /*package-private*/
296     @Override
297     @ForceInline
298     public final
299     Double128Vector
300     lanewise(Ternary op, Vector<Double> v1, Vector<Double> v2) {
301         return (Double128Vector) super.lanewiseTemplate(op, v1, v2);  // specialize
302     }
303 
304     @Override
305     @ForceInline
306     public final
307     Double128Vector
308     lanewise(Ternary op, Vector<Double> v1, Vector<Double> v2, VectorMask<Double> m) {
309         return (Double128Vector) super.lanewiseTemplate(op, Double128Mask.class, v1, v2, (Double128Mask) m);  // specialize
310     }
311 
312     @Override
313     @ForceInline
314     public final
315     Double128Vector addIndex(int scale) {
316         return (Double128Vector) super.addIndexTemplate(scale);  // specialize
317     }
318 
319     // Type specific horizontal reductions
320 
321     @Override
322     @ForceInline
323     public final double reduceLanes(VectorOperators.Associative op) {
324         return super.reduceLanesTemplate(op);  // specialized
325     }
326 
327     @Override
328     @ForceInline
329     public final double reduceLanes(VectorOperators.Associative op,
330                                     VectorMask<Double> m) {
331         return super.reduceLanesTemplate(op, Double128Mask.class, (Double128Mask) m);  // specialized
332     }
333 
334     @Override
335     @ForceInline
336     public final long reduceLanesToLong(VectorOperators.Associative op) {
337         return (long) super.reduceLanesTemplate(op);  // specialized
338     }
339 
340     @Override
341     @ForceInline
342     public final long reduceLanesToLong(VectorOperators.Associative op,
343                                         VectorMask<Double> m) {
344         return (long) super.reduceLanesTemplate(op, Double128Mask.class, (Double128Mask) m);  // specialized
345     }
346 
347     @ForceInline
348     public VectorShuffle<Double> toShuffle() {
349         return super.toShuffleTemplate(Double128Shuffle.class); // specialize
350     }
351 
352     // Specialized unary testing
353 
354     @Override
355     @ForceInline
356     public final Double128Mask test(Test op) {
357         return super.testTemplate(Double128Mask.class, op);  // specialize
358     }
359 
360     @Override
361     @ForceInline
362     public final Double128Mask test(Test op, VectorMask<Double> m) {
363         return super.testTemplate(Double128Mask.class, op, (Double128Mask) m);  // specialize
364     }
365 
366     // Specialized comparisons
367 
368     @Override
369     @ForceInline
370     public final Double128Mask compare(Comparison op, Vector<Double> v) {
371         return super.compareTemplate(Double128Mask.class, op, v);  // specialize
372     }
373 
374     @Override
375     @ForceInline
376     public final Double128Mask compare(Comparison op, double s) {
377         return super.compareTemplate(Double128Mask.class, op, s);  // specialize
378     }
379 
380     @Override
381     @ForceInline
382     public final Double128Mask compare(Comparison op, long s) {
383         return super.compareTemplate(Double128Mask.class, op, s);  // specialize
384     }
385 
386     @Override
387     @ForceInline
388     public final Double128Mask compare(Comparison op, Vector<Double> v, VectorMask<Double> m) {
389         return super.compareTemplate(Double128Mask.class, op, v, (Double128Mask) m);
390     }
391 
392 
393     @Override
394     @ForceInline
395     public Double128Vector blend(Vector<Double> v, VectorMask<Double> m) {
396         return (Double128Vector)
397             super.blendTemplate(Double128Mask.class,
398                                 (Double128Vector) v,
399                                 (Double128Mask) m);  // specialize
400     }
401 
402     @Override
403     @ForceInline
404     public Double128Vector slice(int origin, Vector<Double> v) {
405         return (Double128Vector) super.sliceTemplate(origin, v);  // specialize
406     }
407 
408     @Override
409     @ForceInline
410     public Double128Vector slice(int origin) {
411         return (Double128Vector) super.sliceTemplate(origin);  // specialize
412     }
413 
414     @Override
415     @ForceInline
416     public Double128Vector unslice(int origin, Vector<Double> w, int part) {
417         return (Double128Vector) super.unsliceTemplate(origin, w, part);  // specialize
418     }
419 
420     @Override
421     @ForceInline
422     public Double128Vector unslice(int origin, Vector<Double> w, int part, VectorMask<Double> m) {
423         return (Double128Vector)
424             super.unsliceTemplate(Double128Mask.class,
425                                   origin, w, part,
426                                   (Double128Mask) m);  // specialize
427     }
428 
429     @Override
430     @ForceInline
431     public Double128Vector unslice(int origin) {
432         return (Double128Vector) super.unsliceTemplate(origin);  // specialize
433     }
434 
435     @Override
436     @ForceInline
437     public Double128Vector rearrange(VectorShuffle<Double> s) {
438         return (Double128Vector)
439             super.rearrangeTemplate(Double128Shuffle.class,
440                                     (Double128Shuffle) s);  // specialize
441     }
442 
443     @Override
444     @ForceInline
445     public Double128Vector rearrange(VectorShuffle<Double> shuffle,
446                                   VectorMask<Double> m) {
447         return (Double128Vector)
448             super.rearrangeTemplate(Double128Shuffle.class,
449                                     Double128Mask.class,
450                                     (Double128Shuffle) shuffle,
451                                     (Double128Mask) m);  // specialize
452     }
453 
454     @Override
455     @ForceInline
456     public Double128Vector rearrange(VectorShuffle<Double> s,
457                                   Vector<Double> v) {
458         return (Double128Vector)
459             super.rearrangeTemplate(Double128Shuffle.class,
460                                     (Double128Shuffle) s,
461                                     (Double128Vector) v);  // specialize
462     }
463 
464     @Override
465     @ForceInline
466     public Double128Vector compress(VectorMask<Double> m) {
467         return (Double128Vector)
468             super.compressTemplate(Double128Mask.class,
469                                    (Double128Mask) m);  // specialize
470     }
471 
472     @Override
473     @ForceInline
474     public Double128Vector expand(VectorMask<Double> m) {
475         return (Double128Vector)
476             super.expandTemplate(Double128Mask.class,
477                                    (Double128Mask) m);  // specialize
478     }
479 
480     @Override
481     @ForceInline
482     public Double128Vector selectFrom(Vector<Double> v) {
483         return (Double128Vector)
484             super.selectFromTemplate((Double128Vector) v);  // specialize
485     }
486 
487     @Override
488     @ForceInline
489     public Double128Vector selectFrom(Vector<Double> v,
490                                    VectorMask<Double> m) {
491         return (Double128Vector)
492             super.selectFromTemplate((Double128Vector) v,
493                                      (Double128Mask) m);  // specialize
494     }
495 
496 
497     @ForceInline
498     @Override
499     public double lane(int i) {
500         long bits;
501         switch(i) {
502             case 0: bits = laneHelper(0); break;
503             case 1: bits = laneHelper(1); break;
504             default: throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
505         }
506         return Double.longBitsToDouble(bits);
507     }
508 
509     public long laneHelper(int i) {
510         return (long) VectorSupport.extract(
511                      VCLASS, ETYPE, VLENGTH,
512                      this, i,
513                      (vec, ix) -> {
514                      double[] vecarr = vec.vec();
515                      return (long)Double.doubleToLongBits(vecarr[ix]);
516                      });
517     }
518 
519     @ForceInline
520     @Override
521     public Double128Vector withLane(int i, double e) {
522         switch(i) {
523             case 0: return withLaneHelper(0, e);
524             case 1: return withLaneHelper(1, e);
525             default: throw new IllegalArgumentException("Index " + i + " must be zero or positive, and less than " + VLENGTH);
526         }
527     }
528 
529     public Double128Vector withLaneHelper(int i, double e) {
530         return VectorSupport.insert(
531                                 VCLASS, ETYPE, VLENGTH,
532                                 this, i, (long)Double.doubleToLongBits(e),
533                                 (v, ix, bits) -> {
534                                     double[] res = v.vec().clone();
535                                     res[ix] = Double.longBitsToDouble((long)bits);
536                                     return v.vectorFactory(res);
537                                 });
538     }
539 
540     // Mask
541 
542     static final class Double128Mask extends AbstractMask<Double> {
543         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
544         static final Class<Double> ETYPE = double.class; // used by the JVM
545 
546         Double128Mask(boolean[] bits) {
547             this(bits, 0);
548         }
549 
550         Double128Mask(boolean[] bits, int offset) {
551             super(prepare(bits, offset));
552         }
553 
554         Double128Mask(boolean val) {
555             super(prepare(val));
556         }
557 
558         private static boolean[] prepare(boolean[] bits, int offset) {
559             boolean[] newBits = new boolean[VSPECIES.laneCount()];
560             for (int i = 0; i < newBits.length; i++) {
561                 newBits[i] = bits[offset + i];
562             }
563             return newBits;
564         }
565 
566         private static boolean[] prepare(boolean val) {
567             boolean[] bits = new boolean[VSPECIES.laneCount()];
568             Arrays.fill(bits, val);
569             return bits;
570         }
571 
572         @ForceInline
573         final @Override
574         public DoubleSpecies vspecies() {
575             // ISSUE:  This should probably be a @Stable
576             // field inside AbstractMask, rather than
577             // a megamorphic method.
578             return VSPECIES;
579         }
580 
581         @ForceInline
582         boolean[] getBits() {
583             return (boolean[])getPayload();
584         }
585 
586         @Override
587         Double128Mask uOp(MUnOp f) {
588             boolean[] res = new boolean[vspecies().laneCount()];
589             boolean[] bits = getBits();
590             for (int i = 0; i < res.length; i++) {
591                 res[i] = f.apply(i, bits[i]);
592             }
593             return new Double128Mask(res);
594         }
595 
596         @Override
597         Double128Mask bOp(VectorMask<Double> m, MBinOp f) {
598             boolean[] res = new boolean[vspecies().laneCount()];
599             boolean[] bits = getBits();
600             boolean[] mbits = ((Double128Mask)m).getBits();
601             for (int i = 0; i < res.length; i++) {
602                 res[i] = f.apply(i, bits[i], mbits[i]);
603             }
604             return new Double128Mask(res);
605         }
606 
607         @ForceInline
608         @Override
609         public final
610         Double128Vector toVector() {
611             return (Double128Vector) super.toVectorTemplate();  // specialize
612         }
613 
614         /**
615          * Helper function for lane-wise mask conversions.
616          * This function kicks in after intrinsic failure.
617          */
618         @ForceInline
619         private final <E>
620         VectorMask<E> defaultMaskCast(AbstractSpecies<E> dsp) {
621             if (length() != dsp.laneCount())
622                 throw new IllegalArgumentException("VectorMask length and species length differ");
623             boolean[] maskArray = toArray();
624             return  dsp.maskFactory(maskArray).check(dsp);
625         }
626 
627         @Override
628         @ForceInline
629         public <E> VectorMask<E> cast(VectorSpecies<E> dsp) {
630             AbstractSpecies<E> species = (AbstractSpecies<E>) dsp;
631             if (length() != species.laneCount())
632                 throw new IllegalArgumentException("VectorMask length and species length differ");
633 
634             return VectorSupport.convert(VectorSupport.VECTOR_OP_CAST,
635                 this.getClass(), ETYPE, VLENGTH,
636                 species.maskType(), species.elementType(), VLENGTH,
637                 this, species,
638                 (m, s) -> s.maskFactory(m.toArray()).check(s));
639         }
640 
641         @Override
642         @ForceInline
643         public Double128Mask eq(VectorMask<Double> mask) {
644             Objects.requireNonNull(mask);
645             Double128Mask m = (Double128Mask)mask;
646             return xor(m.not());
647         }
648 
649         // Unary operations
650 
651         @Override
652         @ForceInline
653         public Double128Mask not() {
654             return xor(maskAll(true));
655         }
656 
657         @Override
658         @ForceInline
659         public Double128Mask compress() {
660             return (Double128Mask)VectorSupport.comExpOp(VectorSupport.VECTOR_OP_MASK_COMPRESS,
661                 Double128Vector.class, Double128Mask.class, ETYPE, VLENGTH, null, this,
662                 (v1, m1) -> VSPECIES.iota().compare(VectorOperators.LT, m1.trueCount()));
663         }
664 
665 
666         // Binary operations
667 
668         @Override
669         @ForceInline
670         public Double128Mask and(VectorMask<Double> mask) {
671             Objects.requireNonNull(mask);
672             Double128Mask m = (Double128Mask)mask;
673             return VectorSupport.binaryOp(VECTOR_OP_AND, Double128Mask.class, null, long.class, VLENGTH,
674                                           this, m, null,
675                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a & b));
676         }
677 
678         @Override
679         @ForceInline
680         public Double128Mask or(VectorMask<Double> mask) {
681             Objects.requireNonNull(mask);
682             Double128Mask m = (Double128Mask)mask;
683             return VectorSupport.binaryOp(VECTOR_OP_OR, Double128Mask.class, null, long.class, VLENGTH,
684                                           this, m, null,
685                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a | b));
686         }
687 
688         @ForceInline
689         /* package-private */
690         Double128Mask xor(VectorMask<Double> mask) {
691             Objects.requireNonNull(mask);
692             Double128Mask m = (Double128Mask)mask;
693             return VectorSupport.binaryOp(VECTOR_OP_XOR, Double128Mask.class, null, long.class, VLENGTH,
694                                           this, m, null,
695                                           (m1, m2, vm) -> m1.bOp(m2, (i, a, b) -> a ^ b));
696         }
697 
698         // Mask Query operations
699 
700         @Override
701         @ForceInline
702         public int trueCount() {
703             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TRUECOUNT, Double128Mask.class, long.class, VLENGTH, this,
704                                                       (m) -> trueCountHelper(m.getBits()));
705         }
706 
707         @Override
708         @ForceInline
709         public int firstTrue() {
710             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_FIRSTTRUE, Double128Mask.class, long.class, VLENGTH, this,
711                                                       (m) -> firstTrueHelper(m.getBits()));
712         }
713 
714         @Override
715         @ForceInline
716         public int lastTrue() {
717             return (int) VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_LASTTRUE, Double128Mask.class, long.class, VLENGTH, this,
718                                                       (m) -> lastTrueHelper(m.getBits()));
719         }
720 
721         @Override
722         @ForceInline
723         public long toLong() {
724             if (length() > Long.SIZE) {
725                 throw new UnsupportedOperationException("too many lanes for one long");
726             }
727             return VectorSupport.maskReductionCoerced(VECTOR_OP_MASK_TOLONG, Double128Mask.class, long.class, VLENGTH, this,
728                                                       (m) -> toLongHelper(m.getBits()));
729         }
730 
731         // Reductions
732 
733         @Override
734         @ForceInline
735         public boolean anyTrue() {
736             return VectorSupport.test(BT_ne, Double128Mask.class, long.class, VLENGTH,
737                                          this, vspecies().maskAll(true),
738                                          (m, __) -> anyTrueHelper(((Double128Mask)m).getBits()));
739         }
740 
741         @Override
742         @ForceInline
743         public boolean allTrue() {
744             return VectorSupport.test(BT_overflow, Double128Mask.class, long.class, VLENGTH,
745                                          this, vspecies().maskAll(true),
746                                          (m, __) -> allTrueHelper(((Double128Mask)m).getBits()));
747         }
748 
749         @ForceInline
750         /*package-private*/
751         static Double128Mask maskAll(boolean bit) {
752             return VectorSupport.fromBitsCoerced(Double128Mask.class, long.class, VLENGTH,
753                                                  (bit ? -1 : 0), MODE_BROADCAST, null,
754                                                  (v, __) -> (v != 0 ? TRUE_MASK : FALSE_MASK));
755         }
756         private static final Double128Mask  TRUE_MASK = new Double128Mask(true);
757         private static final Double128Mask FALSE_MASK = new Double128Mask(false);
758 
759     }
760 
761     // Shuffle
762 
763     static final class Double128Shuffle extends AbstractShuffle<Double> {
764         static final int VLENGTH = VSPECIES.laneCount();    // used by the JVM
765         static final Class<Double> ETYPE = double.class; // used by the JVM
766 
767         Double128Shuffle(byte[] reorder) {
768             super(VLENGTH, reorder);
769         }
770 
771         public Double128Shuffle(int[] reorder) {
772             super(VLENGTH, reorder);
773         }
774 
775         public Double128Shuffle(int[] reorder, int i) {
776             super(VLENGTH, reorder, i);
777         }
778 
779         public Double128Shuffle(IntUnaryOperator fn) {
780             super(VLENGTH, fn);
781         }
782 
783         @Override
784         public DoubleSpecies vspecies() {
785             return VSPECIES;
786         }
787 
788         static {
789             // There must be enough bits in the shuffle lanes to encode
790             // VLENGTH valid indexes and VLENGTH exceptional ones.
791             assert(VLENGTH < Byte.MAX_VALUE);
792             assert(Byte.MIN_VALUE <= -VLENGTH);
793         }
794         static final Double128Shuffle IOTA = new Double128Shuffle(IDENTITY);
795 
796         @Override
797         @ForceInline
798         public Double128Vector toVector() {
799             return VectorSupport.shuffleToVector(VCLASS, ETYPE, Double128Shuffle.class, this, VLENGTH,
800                                                     (s) -> ((Double128Vector)(((AbstractShuffle<Double>)(s)).toVectorTemplate())));
801         }
802 
803         @Override
804         @ForceInline
805         public <F> VectorShuffle<F> cast(VectorSpecies<F> s) {
806             AbstractSpecies<F> species = (AbstractSpecies<F>) s;
807             if (length() != species.laneCount())
808                 throw new IllegalArgumentException("VectorShuffle length and species length differ");
809             int[] shuffleArray = toArray();
810             return s.shuffleFromArray(shuffleArray, 0).check(s);
811         }
812 
813         @ForceInline
814         @Override
815         public Double128Shuffle rearrange(VectorShuffle<Double> shuffle) {
816             Double128Shuffle s = (Double128Shuffle) shuffle;
817             byte[] reorder1 = reorder();
818             byte[] reorder2 = s.reorder();
819             byte[] r = new byte[reorder1.length];
820             for (int i = 0; i < reorder1.length; i++) {
821                 int ssi = reorder2[i];
822                 r[i] = reorder1[ssi];  // throws on exceptional index
823             }
824             return new Double128Shuffle(r);
825         }
826     }
827 
828     // ================================================
829 
830     // Specialized low-level memory operations.
831 
832     @ForceInline
833     @Override
834     final
835     DoubleVector fromArray0(double[] a, int offset) {
836         return super.fromArray0Template(a, offset);  // specialize
837     }
838 
839     @ForceInline
840     @Override
841     final
842     DoubleVector fromArray0(double[] a, int offset, VectorMask<Double> m) {
843         return super.fromArray0Template(Double128Mask.class, a, offset, (Double128Mask) m);  // specialize
844     }
845 
846     @ForceInline
847     @Override
848     final
849     DoubleVector fromArray0(double[] a, int offset, int[] indexMap, int mapOffset, VectorMask<Double> m) {
850         return super.fromArray0Template(Double128Mask.class, a, offset, indexMap, mapOffset, (Double128Mask) m);
851     }
852 
853 
854 
855     @ForceInline
856     @Override
857     final
858     DoubleVector fromMemorySegment0(MemorySegment ms, long offset) {
859         return super.fromMemorySegment0Template(ms, offset);  // specialize
860     }
861 
862     @ForceInline
863     @Override
864     final
865     DoubleVector fromMemorySegment0(MemorySegment ms, long offset, VectorMask<Double> m) {
866         return super.fromMemorySegment0Template(Double128Mask.class, ms, offset, (Double128Mask) m);  // specialize
867     }
868 
869     @ForceInline
870     @Override
871     final
872     void intoArray0(double[] a, int offset) {
873         super.intoArray0Template(a, offset);  // specialize
874     }
875 
876     @ForceInline
877     @Override
878     final
879     void intoArray0(double[] a, int offset, VectorMask<Double> m) {
880         super.intoArray0Template(Double128Mask.class, a, offset, (Double128Mask) m);
881     }
882 
883     @ForceInline
884     @Override
885     final
886     void intoArray0(double[] a, int offset, int[] indexMap, int mapOffset, VectorMask<Double> m) {
887         super.intoArray0Template(Double128Mask.class, a, offset, indexMap, mapOffset, (Double128Mask) m);
888     }
889 
890 
891     @ForceInline
892     @Override
893     final
894     void intoMemorySegment0(MemorySegment ms, long offset, VectorMask<Double> m) {
895         super.intoMemorySegment0Template(Double128Mask.class, ms, offset, (Double128Mask) m);
896     }
897 
898 
899     // End of specialized low-level memory operations.
900 
901     // ================================================
902 
903 }