jdk/test/hotspot/jtreg/compiler/c2/TestReducePhiOnCmpWithNoOptPtrCompare.java

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/*
 * @test
 * @bug 8361140
 * @summary Test ConnectionGraph::reduce_phi_on_cmp when OptimizePtrCompare is disabled
 * @library /test/lib /
 * @run driver compiler.c2.TestReducePhiOnCmpWithNoOptPtrCompare
 */

package compiler.c2;

import java.util.Random;
import jdk.test.lib.Asserts;
import compiler.lib.ir_framework.*;

public class TestReducePhiOnCmpWithNoOptPtrCompare {

    public static void main(String[] args) {
        TestFramework.runWithFlags("-XX:-OptimizePtrCompare","-XX:+VerifyReduceAllocationMerges","-XX:+IgnoreUnrecognizedVMOptions");
    }

    @Run(test = {"testReducePhiOnCmp_C2"})
    public void runner(RunInfo info) {
        Random random = info.getRandom();
        boolean cond = random.nextBoolean();
        int x = random.nextInt();
        int y = random.nextInt();
        Asserts.assertEQ(testReducePhiOnCmp_Interp(cond, x, y),testReducePhiOnCmp_C2(cond, x, y));
    }

    @Test
    int testReducePhiOnCmp_C2(boolean cond, int x, int y) { return testReducePhiOnCmp(cond, x, y); }

    @DontCompile
    int testReducePhiOnCmp_Interp(boolean cond, int x, int y) { return testReducePhiOnCmp(cond, x, y); }

    int testReducePhiOnCmp(boolean cond,int x,int y) {
        Point p = null;

        if (cond) {
            p = new Point(x*x, y*y);
        } else if (x > y) {
            p = new Point(x+y, x*y);
        }

        if (p != null) {
            return p.x * p.y;
        } else {
            return 1984;
        }
    }

    static class Point {
        int x, y;
        Point(int x, int y) {
            this.x = x;
            this.y = y;
        }

        @Override
        public boolean equals(Object o) {
            if (o == this) return true;
            if (!(o instanceof Point)) return false;
            Point p = (Point) o;
            return (p.x == x) && (p.y == y);
        }
    }
}