1 /*
   2  * Copyright (c) 2017, 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 
  26 import jdk.incubator.mvt.ValueType;
  27 
  28 import java.lang.invoke.MethodHandle;
  29 import java.lang.invoke.MethodHandles;
  30 
  31 import static java.lang.invoke.MethodType.methodType;
  32 import org.testng.annotations.*;
  33 
  34 import static org.testng.Assert.assertEquals;
  35 
  36 /*
  37  * @test
  38  * @run testng/othervm -XX:+EnableMVT VectorTest
  39  */
  40 
  41 @Test
  42 public class VectorTest {
  43     static final ValueType<?> VT = ValueType.forClass(Long2.class);
  44 
  45     static /* QLong2[] */ Object initL2Array(int length) {
  46         try {
  47             Object arr = MethodHandles.arrayConstructor(VT.arrayValueClass()).invoke(length);
  48             for (int i = 0; i < length; i++) {
  49                 Long2 v = new Long2(2 * i, 2 * i + 1);
  50                 MethodHandles.arrayElementSetter(VT.arrayValueClass()).invoke(arr, i, v);
  51             }
  52             return arr;
  53         } catch (Throwable e) {
  54             throw new Error(e);
  55         }
  56     }
  57 
  58     static final MethodHandle SUM_ARRAY_L2 =
  59             VectorUtils.reducerLoop(VT, VectorLibrary.L2.ADD_L, VectorLibrary.L2.HADD_L, VT.defaultValueConstant()).
  60                     asType(methodType(long.class, Object.class));
  61 
  62     /**
  63      * long sum(QLong2[] a) {
  64      *   QLong2 v = QLong2.default; // (0,0)
  65      *   for (int i = 0; i < a.length; i++) {
  66      *     v = QLong2(v.lo + a[i].lo, v.hi + a[i].hi);
  67      *   }
  68      *   return v.lo + v.hi;
  69      * }
  70      */
  71     // @DontInline
  72     static long sumArrayL2(Object arr) {
  73         try {
  74             return (long) SUM_ARRAY_L2.invokeExact(arr);
  75         } catch (Throwable e) {
  76             throw new Error(e);
  77         }
  78     }
  79 
  80     @Test(dataProvider = "arraySizes")
  81     public void testSumArray(Integer size) {
  82         Object arr = initL2Array(size); // QLong2[size]
  83         long expected = size * (2*size - 1);
  84         for (int i = 0; i < 20_000; i++) {
  85             long sum = sumArrayL2(arr);
  86             assertEquals(expected, sum);
  87         }
  88     }
  89 
  90     /*========================================================*/
  91 
  92     static MethodHandle createConditional() {
  93         // T target(A...,B...);
  94         // T fallback(A...,B...);
  95         // T adapter(A... a,B... b) {
  96         //   if (test(a...))
  97         //     return target(a..., b...);
  98         //   else
  99         //     return fallback(a..., b...);
 100         // }
 101         MethodHandle test = MethodHandles.identity(boolean.class);
 102 
 103         MethodHandle add = VectorLibrary.L2.ADD_L;
 104         MethodHandle addVL = MethodHandles.filterArguments(add, 1, VT.unbox());
 105         MethodHandle inc = MethodHandles.insertArguments(addVL, 1, new Long2(1L, 1L));
 106         MethodHandle incZ = MethodHandles.dropArguments(inc, 0, boolean.class);
 107 
 108         MethodHandle idZ = MethodHandles.dropArguments(VT.identity(), 0, boolean.class);
 109 
 110         // (boolean, QLong2)QLong2
 111         MethodHandle gwt = MethodHandles.guardWithTest(test, incZ, idZ);
 112         return gwt;
 113     }
 114 
 115     static final MethodHandle conditionalMH = createConditional().
 116             asType(methodType(Long2.class, boolean.class, Long2.class));
 117 
 118     // @DontInline
 119     static Long2 conditional(boolean b, Long2 v) {
 120         try {
 121             return (Long2) conditionalMH.invokeExact(b, v);
 122         } catch (Throwable e) {
 123             throw new Error(e);
 124         }
 125     }
 126 
 127     public void testConditional() {
 128         Long2 v = new Long2(1L, 2L);
 129         for (int i = 0; i < 20_000; i++) {
 130             conditional(true,  v);
 131             conditional(false, v);
 132         }
 133     }
 134 
 135     @DataProvider(name = "arraySizes")
 136     public Object[][] arraySizes() {
 137         return new Object[][] {
 138             new Object[] { 1 },
 139             new Object[] { 5 },
 140             new Object[] { 10 },
 141             new Object[] { 0 }
 142         };
 143     }
 144 }
 145 
--- EOF ---