[11u] Respin of JDK 11.0.9 with JDK-8250861 and JDK-8255603 -> 11.0.9.1

[Langer, Christoph]

Hi,

I hereby propose a re-spin of OpenJDK 11 update release 11.0.9 with the following two fixes to be added:

JDK-8250861: Crash in MinINode::Ideal(PhaseGVN*, bool) [0]
JDK-8255603: Memory/Performance regression after JDK-8210985 [1]

The first one is a potential crash which comes as a regression to one of the October CPU patches. The second one fixes a memory regression that was introduced with 11.0.5 already but has just been analyzed and fixed within the last few days.

The version number of the update would be 11.0.9.1, as Gil correctly pointed out [2]

I will wait for feedback/objections until Tuesday 03/11/20 EOB. In case nobody vetoes, Goetz and me will go ahead on Wednesday 04/11/20 and push these patches into the jdk11u repository, along with the required version bumps and tags.

Thanks and best regards,
Christoph

[0] https://bugs.openjdk.java.net/browse/JDK-8250861
[1] https://bugs.openjdk.java.net/browse/JDK-8255603
[2] https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2020-October/004055.html