test/micro/org/openjdk/bench/java/math/BigIntegers.java

*** 135,140 ****
--- 135,174 ----
              }
              tmp = tmp.add(s);
          }
          bh.consume(tmp);
      }
+ 
+     /** Invokes the shiftLeft method of BigInteger with different values. */
+     @Benchmark
+     @OperationsPerInvocation(TESTSIZE)
+     public void testLeftShift(Blackhole bh) {
+         Random rand = new Random();
+         int shift = rand.nextInt(30) + 1;
+         BigInteger tmp = null;
+         for (BigInteger s : hugeArray) {
+             if (tmp == null) {
+                 tmp = s;
+                 continue;
+             }
+             tmp = tmp.shiftLeft(shift);
+         }
+         bh.consume(tmp);
+     }
+ 
+     /** Invokes the shiftRight method of BigInteger with different values. */
+     @Benchmark
+     @OperationsPerInvocation(TESTSIZE)
+     public void testRightShift(Blackhole bh) {
+         Random rand = new Random();
+         int shift = rand.nextInt(30) + 1;
+         BigInteger tmp = null;
+         for (BigInteger s : hugeArray) {
+             if (tmp == null) {
+                 tmp = s;
+                 continue;
+             }
+             tmp = tmp.shiftRight(shift);
+         }
+         bh.consume(tmp);
+     }
  }