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 * Copyright (c) 2022, Arm Limited. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

/*
 * @test
 * @summary Vectorization test on basic byte operations
 * @library /test/lib /
 *
 * @build sun.hotspot.WhiteBox
 *        compiler.vectorization.runner.VectorizationTestRunner
 *
 * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm -Xbootclasspath/a:.
 *                   -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+WhiteBoxAPI
 *                   compiler.vectorization.runner.BasicByteOpTest
 *
 * @requires vm.compiler2.enabled & vm.flagless
 */

package compiler.vectorization.runner;

public class BasicByteOpTest extends VectorizationTestRunner {

    private static final int SIZE = 2345;

    private byte[] a;
    private byte[] b;
    private byte[] c;

    public BasicByteOpTest() {
        a = new byte[SIZE];
        b = new byte[SIZE];
        c = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            a[i] = (byte) (-3 * i);
            b[i] = (byte) (i + 4);
            c[i] = (byte) -90;
        }
    }

    // ---------------- Arithmetic ----------------
    @Test
    public byte[] vectorNeg() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) -a[i];
        }
        return res;
    }

    @Test
    public byte[] vectorAbs() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) Math.abs(a[i]);
        }
        return res;
    }

    @Test
    public byte[] vectorAdd() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] + b[i]);
        }
        return res;
    }

    @Test
    public byte[] vectorSub() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] - b[i]);
        }
        return res;
    }

    @Test
    public byte[] vectorMul() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] * b[i]);
        }
        return res;
    }

    @Test
    public byte[] vectorMulAdd() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (c[i] + a[i] * b[i]);
        }
        return res;
    }

    @Test
    public byte[] vectorMulSub() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (c[i] - a[i] * b[i]);
        }
        return res;
    }

    // ---------------- Logic ----------------
    @Test
    public byte[] vectorNot() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) ~a[i];
        }
        return res;
    }

    @Test
    public byte[] vectorAnd() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] & b[i]);
        }
        return res;
    }

    @Test
    public byte[] vectorOr() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] | b[i]);
        }
        return res;
    }

    @Test
    public byte[] vectorXor() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] ^ b[i]);
        }
        return res;
    }

    // ---------------- Shift ----------------
    @Test
    public byte[] vectorShiftLeft() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] << 3);
        }
        return res;
    }

    @Test
    public byte[] vectorSignedShiftRight() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] >> 2);
        }
        return res;
    }

    @Test
    // Note that unsigned shift right on subword signed integer types can
    // not be vectorized since the sign extension bit would be lost.
    public byte[] vectorUnsignedShiftRight() {
        byte[] res = new byte[SIZE];
        for (int i = 0; i < SIZE; i++) {
            res[i] = (byte) (a[i] >>> 5);
        }
        return res;
    }
}