hg: jdk/submit: 8236641: Improve Set.of(...).iterator() warmup characteristics

[claes.redestad at oracle.com]

Changeset: 519b7d1292ac
Author:    redestad
Date:      2020-01-21 22:21 +0100
URL:       https://hg.openjdk.java.net/jdk/submit/rev/519b7d1292ac

8236641: Improve Set.of(...).iterator() warmup characteristics
Reviewed-by: smarks, jrose, fweimer

! src/java.base/share/classes/java/util/ImmutableCollections.java