/*
 * Copyright (c) 2022, 2023, Oracle and/or its affiliates. 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 8294588
 * @summary Auto-vectorize Float.floatToFloat16, Float.float16ToFloat APIs
 * @requires vm.compiler2.enabled
 * @requires (os.simpleArch == "x64" & (vm.cpu.features ~= ".*avx512f.*" | vm.cpu.features ~= ".*f16c.*")) | os.arch == "aarch64"
 * @library /test/lib /
 * @run driver compiler.vectorization.TestFloatConversionsVector
 */

package compiler.vectorization;

import compiler.lib.ir_framework.*;
import jdk.test.lib.Asserts;

public class TestFloatConversionsVector {
    private static final int ARRLEN = 1024;
    private static final int ITERS  = 11000;
    private static float  [] finp;
    private static short  [] sout;
    private static short  [] sinp;
    private static float  [] fout;

    public static void main(String args[]) {
        TestFramework.runWithFlags("-XX:-TieredCompilation",
                                   "-XX:CompileThresholdScaling=0.3");
        System.out.println("PASSED");
    }

    @Test
    @IR(counts = {IRNode.VECTOR_CAST_F2HF, "> 0"})
    public void test_float_float16(short[] sout, float[] finp) {
        for (int i = 0; i < finp.length; i++) {
            sout[i] = Float.floatToFloat16(finp[i]);
        }
    }

    @Run(test = {"test_float_float16"}, mode = RunMode.STANDALONE)
    public void kernel_test_float_float16() {
        finp = new float[ARRLEN];
        sout = new short[ARRLEN];

        for (int i = 0; i < ARRLEN; i++) {
            finp[i] = (float) i * 1.4f;
        }

        for (int i = 0; i < ITERS; i++) {
            test_float_float16(sout, finp);
        }

        // Verifying the result
        for (int i = 0; i < ARRLEN; i++) {
            Asserts.assertEquals(Float.floatToFloat16(finp[i]), sout[i]);
        }
    }

    @Test
    @IR(counts = {IRNode.VECTOR_CAST_HF2F, "> 0"})
    public void test_float16_float(float[] fout, short[] sinp) {
        for (int i = 0; i < sinp.length; i++) {
            fout[i] = Float.float16ToFloat(sinp[i]);
        }
    }

    @Run(test = {"test_float16_float"}, mode = RunMode.STANDALONE)
    public void kernel_test_float16_float() {
        sinp = new short[ARRLEN];
        fout = new float[ARRLEN];

        for (int i = 0; i < ARRLEN; i++) {
            sinp[i] = (short)i;
        }

        for (int i = 0; i < ITERS; i++) {
            test_float16_float(fout, sinp);
        }

        // Verifying the result
        for (int i = 0; i < ARRLEN; i++) {
            Asserts.assertEquals(Float.float16ToFloat(sinp[i]), fout[i]);
        }
    }
}