[8u-dev] Request for Approval: Backport of 8184271 and 8184009

[Tobias Hartmann]

Hi,

please approve the backports of the following fixes to JDK 8u:

8184271: Time related C1 intrinsics produce inconsistent results when floating around
https://bugs.openjdk.java.net/browse/JDK-8184271
http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2017-July/026681.html
http://cr.openjdk.java.net/~thartmann/8184271/webrev.00/
http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/cc2bc9993d64

The patch does not apply cleanly but requires a (trivial) merge:
http://cr.openjdk.java.net/~thartmann/8184271_8u/webrev.00/

8184009: Missing null pointer check in InterpreterRuntime::update_mdp_for_ret()
https://bugs.openjdk.java.net/browse/JDK-8184009
http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-July/027514.html
http://cr.openjdk.java.net/~thartmann/8184009/webrev.00/
http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/56a68e37d23b

Both fixes were pushed to JDK 10 and testing showed no problems.

Thanks,
Tobias