[8u] 8164508: unexpected profiling mismatch in c1 generated code

[David Buck]

Hi!

Please approve this backport of JDK-8158639 from JDK 9 to 8u-dev.

Bug Report:
[ 8164508: unexpected profiling mismatch in c1 generated code ]
https://bugs.openjdk.java.net/browse/JDK-8164508

8u Code Review:
http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2016-December/025057.html

JDK 9 changeset:
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/f940af863003

8u-dev Webrev:
http://cr.openjdk.java.net/~dbuck/jdk8164508_8u_01/

Testing:
Manual verification and JPRT (hotspot testset)

Cheers,
-Buck