jdk/test/hotspot/jtreg/compiler/escapeAnalysis/TestMemoryPhiAlias.java

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/**
 * @test
 * @bug 8350971
 * @summary C2 compilation fails with assert(idx == alias_idx) failed: Following Phi nodes should be on the same memory slice
 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:-TieredCompilation -Xbatch -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestMemoryPhiAlias::main
 *                   compiler.escapeAnalysis.TestMemoryPhiAlias
 */

package compiler.escapeAnalysis;

import java.util.function.*;

public class TestMemoryPhiAlias {
    static int[] iArrFld = new int[400];
    static int counter = 0;
    static int doWork() {
        int[] more = {94};
        java.util.function.Predicate<Integer> check = m -> m == 0;
        java.util.function.IntConsumer decrement = x -> more[0]--;
        java.util.function.BooleanSupplier innerLoop = () -> {
            while (!check.test(more[0])) {
                decrement.accept(0);
            }
            return true;
        };
        counter++;
        if (counter == 10000000) {
            throw new RuntimeException("excepted");
        }
        innerLoop.getAsBoolean();
        java.util.function.BooleanSupplier process = () -> check.test(more[0]);
        while (!process.getAsBoolean()) {
        }
        return 0;
    }

    public static void main(String[] strArr) {
        int i14 = 1;
        do {
            iArrFld[i14] = 211;
            for (int i15 = 1; i15 < 4; ++i15)
                try {
                    TestMemoryPhiAlias.doWork();
                } catch (RuntimeException e) {
                    return;
                }
        } while (i14 < 5);
    }
}