test/hotspot/jtreg/compiler/loopopts/LoopReductionHasControlOrBadInput.java

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/*
 * @test
 * @bug 8350576
 * @summary Optimization bails out and hits an assert:
 *          assert(false) failed: reduction has ctrl or bad vector_input
 * @run main/othervm -Xbatch -XX:-TieredCompilation
 *      -XX:CompileCommand=compileonly,compiler.loopopts.LoopReductionHasControlOrBadInput::*
 *      compiler.loopopts.LoopReductionHasControlOrBadInput
 * @run main compiler.loopopts.LoopReductionHasControlOrBadInput
 *
 */

package compiler.loopopts;

public class LoopReductionHasControlOrBadInput {
    static long lFld;
    static long lArr[] = new long[400];

    static void test() {
        int i = 1;
        do {
            long x = -1;
            lArr[i] = i;
            lFld += i | x;
        } while (++i < 355);
    }

    public static void main(String[] strArr) {
        for (int i = 0; i < 100; i++) {
            test();
        }
    }
}