TestSplitThroughPhi.java

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/*
 * @test
 * @bug 8224957
 * @summary Test splitting a boxed field load through a loop Phi.
 * @run main/othervm -XX:-TieredCompilation -XX:-ProfileInterpreter
 *                   -XX:CompileOnly=compiler.eliminateAutobox.TestSplitThroughPhi::test
 *                   compiler.eliminateAutobox.TestSplitThroughPhi
 */

package compiler.eliminateAutobox;

public class TestSplitThroughPhi {

  static volatile boolean loop = true;

  public static void test(Object obj) {
      for (int i = 0; i == 0; ) {
          // OSR compilation generates Region with 3 input paths
          while (true) {
              // Load from boxed int
              int val = (Integer)obj;
              if (val == i++) break;
              if (!loop) break;
          }
      }
  }

  public static void main(String[] args) {
      test(100_000);
  }
}