We have written a database in zero GC java and one thing I have not seen any evidence of "escape analysis".

   @State(Scope.Thread)
   @BenchmarkMode(Mode.AverageTime)
   @OutputTimeUnit(TimeUnit.NANOSECONDS)
   public class EscBenchmark {

       Rnd rnd = new Rnd();

       public static void main(String[] args) throws RunnerException {
           Options opt = new OptionsBuilder()
                   .include(EscBenchmark.class.getSimpleName())
                   .warmupIterations(5)
                   .measurementIterations(5)
                   .forks(1)
                   .addProfiler(GCProfiler.class)
                   .build();

           new Runner(opt).run();
       }

       @Benchmark
       public int testEscapeAnalysis() {
           int[] tuple = {0, 2}; // esc analysis? where are you?
           return tuple[rnd.nextPositiveInt() % 2];
       }
   }

And the output of GC profiler:

  Benchmark                                                     Mode  Cnt     Score     Error   Units
  EscBenchmark.testEscapeAnalysis                               avgt    5     8.234 ±   0.029   ns/op
  EscBenchmark.testEscapeAnalysis:·gc.alloc.rate                avgt    5  2647.216 ±   9.275  MB/sec
  EscBenchmark.testEscapeAnalysis:·gc.alloc.rate.norm           avgt    5    24.000 ±   0.001    B/op
  EscBenchmark.testEscapeAnalysis:·gc.churn.G1_Eden_Space       avgt    5  2643.140 ± 177.137  MB/sec
  EscBenchmark.testEscapeAnalysis:·gc.churn.G1_Eden_Space.norm  avgt    5    23.963 ±   1.613    B/op
  EscBenchmark.testEscapeAnalysis:·gc.count                     avgt    5   157.000            counts
  EscBenchmark.testEscapeAnalysis:·gc.time                      avgt    5   103.000                ms