test/jdk/jdk/incubator/vector/Byte256VectorTests.java

*** 257,10 ***
--- 257,59 ---
              int idx = i + j;
              Assert.assertEquals(r[i+j], a[i+order[i+j]], "at index #" + idx + ", input = " + a[i+order[i+j]]);
          }
      }
  
+     static void assertcompressArraysEquals(byte[] r, byte[] a, boolean[] m, int vector_len) {
+         int i = 0, j = 0, k = 0;
+         try {
+             for (; i < a.length; i += vector_len) {
+                 k = 0;
+                 for (j = 0; j < vector_len; j++) {
+                     if (m[(i + j) % SPECIES.length()]) {
+                         Assert.assertEquals(r[i + k], a[i + j]);
+                         k++;
+                     }
+                 }
+                 for (; k < vector_len; k++) {
+                     Assert.assertEquals(r[i + k], (byte)0);
+                 }
+             }
+         } catch (AssertionError e) {
+             int idx = i + k;
+             if (m[(i + j) % SPECIES.length()]) {
+                 Assert.assertEquals(r[idx], a[i + j], "at index #" + idx);
+             } else {
+                 Assert.assertEquals(r[idx], (byte)0, "at index #" + idx);
+             }
+         }
+     }
+ 
+     static void assertexpandArraysEquals(byte[] r, byte[] a, boolean[] m, int vector_len) {
+         int i = 0, j = 0, k = 0;
+         try {
+             for (; i < a.length; i += vector_len) {
+                 k = 0;
+                 for (j = 0; j < vector_len; j++) {
+                     if (m[(i + j) % SPECIES.length()]) {
+                         Assert.assertEquals(r[i + j], a[i + k]);
+                         k++;
+                     } else {
+                         Assert.assertEquals(r[i + j], (byte)0);
+                     }
+                 }
+             }
+         } catch (AssertionError e) {
+             int idx = i + j;
+             if (m[idx % SPECIES.length()]) {
+                 Assert.assertEquals(r[idx], a[i + k], "at index #" + idx);
+             } else {
+                 Assert.assertEquals(r[idx], (byte)0, "at index #" + idx);
+             }
+         }
+     }
+ 
      static void assertSelectFromArraysEquals(byte[] r, byte[] a, byte[] order, int vector_len) {
          int i = 0, j = 0;
          try {
              for (; i < a.length; i += vector_len) {
                  for (j = 0; j < vector_len; j++) {

*** 4222,10 ***
--- 4271,46 ---
              av.rearrange(VectorShuffle.fromArray(SPECIES, order, i), vmask).intoArray(r, i);
          }
  
          assertRearrangeArraysEquals(r, a, order, mask, SPECIES.length());
      }
+ 
+     @Test(dataProvider = "byteUnaryOpMaskProvider")
+     static void compressByte256VectorTests(IntFunction<byte[]> fa,
+                                                 IntFunction<boolean[]> fm) {
+         byte[] a = fa.apply(SPECIES.length());
+         byte[] r = fr.apply(SPECIES.length());
+         boolean[] mask = fm.apply(SPECIES.length());
+         VectorMask<Byte> vmask = VectorMask.fromArray(SPECIES, mask, 0);
+ 
+         for (int ic = 0; ic < INVOC_COUNT; ic++) {
+             for (int i = 0; i < a.length; i += SPECIES.length()) {
+                 ByteVector av = ByteVector.fromArray(SPECIES, a, i);
+                 av.compress(vmask).intoArray(r, i);
+             }
+         }
+ 
+         assertcompressArraysEquals(r, a, mask, SPECIES.length());
+     }
+ 
+     @Test(dataProvider = "byteUnaryOpMaskProvider")
+     static void expandByte256VectorTests(IntFunction<byte[]> fa,
+                                                 IntFunction<boolean[]> fm) {
+         byte[] a = fa.apply(SPECIES.length());
+         byte[] r = fr.apply(SPECIES.length());
+         boolean[] mask = fm.apply(SPECIES.length());
+         VectorMask<Byte> vmask = VectorMask.fromArray(SPECIES, mask, 0);
+ 
+         for (int ic = 0; ic < INVOC_COUNT; ic++) {
+             for (int i = 0; i < a.length; i += SPECIES.length()) {
+                 ByteVector av = ByteVector.fromArray(SPECIES, a, i);
+                 av.expand(vmask).intoArray(r, i);
+             }
+         }
+ 
+         assertexpandArraysEquals(r, a, mask, SPECIES.length());
+     }
      @Test(dataProvider = "byteUnaryOpProvider")
      static void getByte256VectorTests(IntFunction<byte[]> fa) {
          byte[] a = fa.apply(SPECIES.length());
          byte[] r = fr.apply(SPECIES.length());
  

*** 5496,10 ***
--- 5581,27 ---
          }
  
          assertMaskReductionArraysEquals(r, a, Byte256VectorTests::maskFirstTrue);
      }
  
+     @Test(dataProvider = "maskProvider")
+     static void maskCompressByte256VectorTestsSmokeTest(IntFunction<boolean[]> fa) {
+         int trueCount = 0;
+         boolean[] a = fa.apply(SPECIES.length());
+ 
+         for (int ic = 0; ic < INVOC_COUNT * INVOC_COUNT; ic++) {
+             for (int i = 0; i < a.length; i += SPECIES.length()) {
+                 var vmask = SPECIES.loadMask(a, i);
+                 trueCount = vmask.trueCount();
+                 var rmask = vmask.compress();
+                 for (int j = 0; j < SPECIES.length(); j++)  {
+                     Assert.assertEquals(rmask.laneIsSet(j), j < trueCount);
+                 }
+             }
+         }
+     }
+ 
      @DataProvider
      public static Object[][] longMaskProvider() {
          return new Object[][]{
                  {0xFFFFFFFFFFFFFFFFL},
                  {0x0000000000000000L},