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package compiler.corelibs;

import java.util.Optional;

import compiler.lib.ir_framework.Check;
import compiler.lib.ir_framework.IR;
import compiler.lib.ir_framework.IRNode;
import compiler.lib.ir_framework.Test;
import compiler.lib.ir_framework.TestFramework;

/*
 * @test
 * @bug 8372696
 * @summary Verify constant folding for Optional, both present and absent
 * @library /test/lib /
 * @run driver ${test.main.class}
 */
public class OptionalFold {

    public static void main(String[] args) {
        // Somehow fails with -XX:-TieredCompilation
        TestFramework.runWithFlags("-XX:+TieredCompilation");
    }

    // Ensure both present and empty values can fold
    static final Optional<Integer> ONE = Optional.of(5), TWO = Optional.empty();

    @Test
    @IR(failOn = {IRNode.ADD_I})
    public int testSum() {
        return ONE.orElse(7) + TWO.orElse(12);
    }

    @Check(test = "testSum")
    public void checkTestSum(int res) {
        if (res != 5 + 12) {
            throw new RuntimeException("incorrect result: " + res);
        }
    }

}