< prev index next >
src/jdk.incubator.vector/share/classes/jdk/incubator/vector/Double256Vector.java
Print this page
@@ -1165,52 +1165,67 @@
return new Long256Vector(res);
}
@Override
+ @ForceInline
public Double256Vector rotateLanesLeft(int j) {
- double[] vec = getElements();
- double[] res = new double[length()];
- for (int i = 0; i < length(); i++){
- res[(j + i) % length()] = vec[i];
+ int L = length();
+ if (j < 0) {
+ throw new IllegalArgumentException("Index " + j + " must be zero or positive");
+ } else {
+ j = j & (L-1);
+ VectorShuffle<Double> PermMask = VectorShuffle.shuffleIota(SPECIES, L - j);
+ return this.rearrange(PermMask);
}
- return new Double256Vector(res);
}
@Override
+ @ForceInline
public Double256Vector rotateLanesRight(int j) {
- double[] vec = getElements();
- double[] res = new double[length()];
- for (int i = 0; i < length(); i++){
- int z = i - j;
- if(j < 0) {
- res[length() + z] = vec[i];
+ int L = length();
+ if (j < 0) {
+ throw new IllegalArgumentException("Index " + j + " must be zero or positive");
} else {
- res[z] = vec[i];
- }
+ j = j & (L-1);
+ VectorShuffle<Double> PermMask = VectorShuffle.shuffleIota(SPECIES, j);
+ return this.rearrange(PermMask);
}
- return new Double256Vector(res);
}
@Override
+ @ForceInline
+ @SuppressWarnings("unchecked")
public Double256Vector shiftLanesLeft(int j) {
- double[] vec = getElements();
- double[] res = new double[length()];
- for (int i = 0; i < length() - j; i++) {
- res[i] = vec[i + j];
+ int L = length();
+ if (j < 0) {
+ throw new IllegalArgumentException("Index " + j + " must be zero or positive");
+ } else if ( j >= L ) {
+ return ZERO;
+ } else {
+ Double256Shuffle Iota = (Double256Shuffle)(VectorShuffle.shuffleIota(SPECIES, L-j));
+ VectorMask<Double> BlendMask = Iota.toVector().lessThan(Double256Vector.broadcast(SPECIES, (double)(L-j)));
+ Iota = (Double256Shuffle)(VectorShuffle.shuffleIota(SPECIES, L -j));
+ return ZERO.blend(this.rearrange(Iota),BlendMask);
}
- return new Double256Vector(res);
}
@Override
+ @ForceInline
+ @SuppressWarnings("unchecked")
public Double256Vector shiftLanesRight(int j) {
- double[] vec = getElements();
- double[] res = new double[length()];
- for (int i = 0; i < length() - j; i++){
- res[i + j] = vec[i];
+ int L = length();
+ if (j < 0) {
+ throw new IllegalArgumentException("Index " + j + " must be zero or positive");
+ } else if ( j >= L ) {
+ return ZERO;
+ } else {
+ Double256Shuffle Iota = (Double256Shuffle)(VectorShuffle.shuffleIota(SPECIES, j));
+ VectorMask<Double> BlendMask = Iota.toVector().greaterThanEq(Double256Vector.broadcast(SPECIES, (double)(j)));
+ Iota = (Double256Shuffle)(VectorShuffle.shuffleIota(SPECIES, j));
+ return ZERO.blend(this.rearrange(Iota),BlendMask);
}
- return new Double256Vector(res);
}
@Override
@ForceInline
public Double256Vector rearrange(Vector<Double> v,
@@ -1446,21 +1461,28 @@
@Override
public VectorSpecies<Double> species() {
return SPECIES;
}
- @Override
- public DoubleVector toVector() {
+ private DoubleVector toVector_helper() {
double[] va = new double[SPECIES.length()];
for (int i = 0; i < va.length; i++) {
va[i] = (double) lane(i);
}
return DoubleVector.fromArray(SPECIES, va, 0);
}
@Override
@ForceInline
+ public DoubleVector toVector() {
+ return VectorIntrinsics.shuffleToVector(Double256Vector.class, double.class, Double256Shuffle.class, this,
+ SPECIES.length(),
+ (s) -> (((Double256Shuffle)(s)).toVector_helper()));
+ }
+
+ @Override
+ @ForceInline
@SuppressWarnings("unchecked")
public <F> VectorShuffle<F> cast(VectorSpecies<F> species) {
if (length() != species.length())
throw new IllegalArgumentException("Shuffle length and species length differ");
Class<?> stype = species.elementType();
@@ -1480,10 +1502,11 @@
} else {
throw new UnsupportedOperationException("Bad lane type for casting.");
}
}
+
@Override
public Double256Shuffle rearrange(VectorShuffle<Double> o) {
Double256Shuffle s = (Double256Shuffle) o;
byte[] r = new byte[reorder.length];
for (int i = 0; i < reorder.length; i++) {
< prev index next >