[8u] RFR(S) 8058564: Tiered compilation performance drop in PIT

[Igor Veresov]

jdk9 webrev: http://cr.openjdk.java.net/~iveresov/8058564/webrev.05
jdk8 webrev: http://cr.openjdk.java.net/~iveresov/8058564/webrev-8u/
JDK8 is slightly different - there’s no code aging.
jdk9 changeset: http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/75e7ad74fba8
JBS: https://bugs.openjdk.java.net/browse/JDK-8058564

Thanks,
igor