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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/**
 * @test
 * @bug 8276455
 * @summary Test C2 iterative Escape Analysis
 * @library /test/lib /
 *
 * @requires vm.flagless
 * @requires vm.compiler2.enabled & vm.debug == true
 *
 * @run driver TestIterativeEA
 */

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

public class TestIterativeEA {

  public static void main(String[] args) throws Exception {
    ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
                "-server", "-XX:-TieredCompilation", "-Xbatch", "-XX:+PrintEliminateAllocations",
                 Launcher.class.getName());

    OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());

    System.out.println(analyzer.getOutput());

    analyzer.shouldHaveExitValue(0);
    analyzer.shouldContain("++++ Eliminated: 26 Allocate");
    analyzer.shouldContain("++++ Eliminated: 48 Allocate");
    analyzer.shouldContain("++++ Eliminated: 78 Allocate");
  }

  static class A {
    int i;

    public A(int i) {
      this.i = i;
    }
  }

  static class B {
    A a;

    public B(A a) {
      this.a = a;
    }
  }

  static class C {
    B b;

    public C(B b) {
      this.b = b;
    }
  }

  static int test(int i) {
    C c = new C(new B(new A(i)));
    return c.b.a.i;
  }

  static class Launcher {
    public static void main(String[] args) {
      for (int i = 0; i < 12000; ++i) {
        int j = test(i);
      }
    }
  }

}