/*

 * Copyright (c) 2014, 2018, 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

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 * questions.

 */

/**

 * @test ConstantGettersTransitionsTest

 * @summary Test the correctness of compilation level transitions for constant getters methods

 * @library /test/lib /

 * @modules java.base/jdk.internal.misc

 *          java.management

 *

 * @build sun.hotspot.WhiteBox

 *        compiler.tiered.ConstantGettersTransitionsTest

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm/timeout=240 -Xmixed -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

 *      -XX:+WhiteBoxAPI -XX:+TieredCompilation -XX:-UseCounterDecay

 *      -XX:CompileCommand=compileonly,compiler.tiered.ConstantGettersTransitionsTest$ConstantGettersTestCase$TrivialMethods::*

 *      compiler.tiered.ConstantGettersTransitionsTest

 */

package compiler.tiered;

import compiler.whitebox.CompilerWhiteBoxTest;

import jtreg.SkippedException;

import java.lang.reflect.Executable;

import java.util.concurrent.Callable;

public class ConstantGettersTransitionsTest extends LevelTransitionTest {

    public static void main(String[] args) {

        if (CompilerWhiteBoxTest.skipOnTieredCompilation(false)) {

            throw new SkippedException("Test isn't applicable for non-tiered mode");

        }

        // run test cases

        for (TestCase testCase : ConstantGettersTestCase.values()) {

            new ConstantGettersTransitionsTest(testCase).runTest();

        }

    }

    @Override

    protected boolean isTrivial() {

        return true;

    }

    private ConstantGettersTransitionsTest(TestCase testCase) {

        super(testCase);

    }

    private static enum ConstantGettersTestCase implements CompilerWhiteBoxTest.TestCase {

        ICONST_M1,

        ICONST_0,

        ICONST_1,

        ICONST_2,

        ICONST_3,

        ICONST_4,

        ICONST_5,

        LCONST_0,

        LCONST_1,

        FCONST_0,

        FCONST_1,

        FCONST_2,

        DCONST_0,

        DCONST_1,

        DCONST_W,

        BYTE,

        SHORT,

        CHAR;

        private final Executable executable;

        private final Callable<Integer> callable;

        @Override

        public Executable getExecutable() {

            return executable;

        }

        @Override

        public Callable<Integer> getCallable() {

            return callable;

        }

        @Override

        public boolean isOsr() {

            return false;

        }

        private ConstantGettersTestCase() {

            String name = "make" + this.name();

            this.executable = LevelTransitionTest.Helper.getMethod(TrivialMethods.class, name);

            this.callable = LevelTransitionTest.Helper.getCallable(new TrivialMethods(), name);

        }

        /**

         * Contains methods that load constants with certain types of bytecodes

         * See JVMS 2.11.2. Load and Store Instructions

         * Note that it doesn't have a method for ldc_w instruction

         */

        private static class TrivialMethods {

            public static int makeICONST_M1() {

                return -1;

            }

            public static int makeICONST_0() {

                return 0;

            }

            public static int makeICONST_1() {

                return 1;

            }

            public static int makeICONST_2() {

                return 2;

            }

            public static int makeICONST_3() {

                return 3;

            }

            public static int makeICONST_4() {

                return 4;

            }

            public static int makeICONST_5() {

                return 5;

            }

            public static long makeLCONST_0() {

                return 0L;

            }

            public static long makeLCONST_1() {

                return 1L;

            }

            public static float makeFCONST_0() {

                return 0F;

            }

            public static float makeFCONST_1() {

                return 1F;

            }

            public static float makeFCONST_2() {

                return 2F;

            }

            public static double makeDCONST_0() {

                return 0D;

            }

            public static double makeDCONST_1() {

                return 1D;

            }

            public static double makeDCONST_W() {

                // ldc2_w

                return Double.MAX_VALUE;

            }

            public static Object makeOBJECT() {

                // aconst_null

                return null;

            }

            public static byte makeBYTE() {

                // bipush

                return (byte) 0x7F;

            }

            public static short makeSHORT() {

                // sipush

                return (short) 0x7FFF;

            }

            public static char makeCHAR() {

                // ldc

                return (char) 0xFFFF;

            }

            public static boolean makeBOOLEAN() {

                return true;

            }

        }

    }

}