1 /*
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  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  */
 23 
 24 /**
 25  * @test
 26  * @bug 8074981
 27  * @summary Add C2 x86 Superword support for scalar product reduction optimizations : float test
 28  * @requires os.arch=="x86" | os.arch=="i386" | os.arch=="amd64" | os.arch=="x86_64" | os.arch=="aarch64" | os.arch=="riscv64"
 29  *
 30  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 31  *      -XX:CompileThresholdScaling=0.1
 32  *      -XX:+SuperWordReductions
 33  *      -XX:LoopMaxUnroll=2
 34  *      compiler.loopopts.superword.ProdRed_Float
 35  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 36  *      -XX:CompileThresholdScaling=0.1
 37  *      -XX:-SuperWordReductions
 38  *      -XX:LoopMaxUnroll=2
 39  *      compiler.loopopts.superword.ProdRed_Float
 40  *
 41  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 42  *      -XX:CompileThresholdScaling=0.1
 43  *      -XX:+SuperWordReductions
 44  *      -XX:LoopMaxUnroll=4
 45  *      compiler.loopopts.superword.ProdRed_Float
 46  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 47  *      -XX:CompileThresholdScaling=0.1
 48  *      -XX:-SuperWordReductions
 49  *      -XX:LoopMaxUnroll=4
 50  *      compiler.loopopts.superword.ProdRed_Float
 51  *
 52  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 53  *      -XX:CompileThresholdScaling=0.1
 54  *      -XX:+SuperWordReductions
 55  *      -XX:LoopMaxUnroll=8
 56  *      compiler.loopopts.superword.ProdRed_Float
 57  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 58  *      -XX:CompileThresholdScaling=0.1
 59  *      -XX:-SuperWordReductions
 60  *      -XX:LoopMaxUnroll=8
 61  *      compiler.loopopts.superword.ProdRed_Float
 62  *
 63  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 64  *      -XX:CompileThresholdScaling=0.1
 65  *      -XX:+SuperWordReductions
 66  *      -XX:LoopMaxUnroll=16
 67  *      compiler.loopopts.superword.ProdRed_Float
 68  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 69  *      -XX:CompileThresholdScaling=0.1
 70  *      -XX:-SuperWordReductions
 71  *      -XX:LoopMaxUnroll=16
 72  *      compiler.loopopts.superword.ProdRed_Float
 73  */
 74 
 75 package compiler.loopopts.superword;
 76 
 77 public class ProdRed_Float {
 78     public static void main(String[] args) throws Exception {
 79         float[] a = new float[256 * 1024];
 80         float[] b = new float[256 * 1024];
 81         prodReductionInit(a, b);
 82         float valid = 2000;
 83         float total = 0;
 84         for (int j = 0; j < 2000; j++) {
 85             total = j + 1;
 86             total = prodReductionImplement(a, b, total);
 87         }
 88         if (total == valid) {
 89             System.out.println("Success");
 90         } else {
 91             System.out.println("Invalid sum of elements variable in total: " + total);
 92             System.out.println("Expected value = " + valid);
 93             throw new Exception("Failed");
 94         }
 95     }
 96 
 97     public static void prodReductionInit(float[] a, float[] b) {
 98         for (int i = 0; i < a.length; i++) {
 99             a[i] = i + 2;
100             b[i] = i + 1;
101         }
102     }
103 
104     public static float prodReductionImplement(float[] a, float[] b, float total) {
105         for (int i = 0; i < a.length; i++) {
106             total *= a[i] - b[i];
107         }
108         return total;
109     }
110 
111 }