test/micro/org/openjdk/bench/vm/gc/Alloc.java

 38 public class Alloc {
 39
 40 public static final int LENGTH = 400;
 41 public static final int ARR_LEN = 100;
 42 public int largeLen = 100;
 43 public int smalllen = 6;
...
 54 @Benchmark
 55 public void testLargeVariableArray(Blackhole bh) throws Exception {
 56 int localArrlen = largeLen;
 57 for (int i = 0; i < LENGTH; i++) {
 58 Object[] tmp = new Object[localArrlen];
 59 bh.consume(tmp);
 60 }
 61 }
 62
 63 @Benchmark
 64 public void testSmallConstArray(Blackhole bh) throws Exception {
 65 int localArrlen = largeLen;
 66 for (int i = 0; i < LENGTH; i++) {
 67 Object[] tmp = new Object[localArrlen];
 68 bh.consume(tmp);
 69 }
 70 }

testLargeVariableArray and testSmallConstArray are the same, the localArrlen of testSmallConstArray should be small and const.