hg: jdk/sandbox: 8225339: Optimize HashMap.keySet()/HashMap.values()/HashSet toArray() methods

[chris.hegarty at oracle.com]

Changeset: 1afe0cb93482
Author:    tvaleev
Date:      2019-06-14 05:02 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/1afe0cb93482

8225339: Optimize HashMap.keySet()/HashMap.values()/HashSet toArray() methods
Reviewed-by: rriggs, redestad, smarks

! src/java.base/share/classes/java/util/HashMap.java
! src/java.base/share/classes/java/util/HashSet.java
! src/java.base/share/classes/java/util/LinkedHashMap.java
+ test/jdk/java/util/HashMap/ToArray.java
+ test/micro/org/openjdk/bench/java/util/HashMapToArray.java