[8u] Request for backporting some issues affecting hotspot-compiler

[chengjingwei]

Hi, all

Would someone help to approve the backport of the following issues?

- Issue list:

JDK-8202952

JDK-8134883

- Details:

JDK-8202952:

Reproduced on 8u:[Yes]

Bug: https://bugs.openjdk.java.net/browse/JDK-8202952

Patch is clean:[Yes]

JDK13 Changeset: http://hg.openjdk.java.net/jdk/jdk/rev/80b55cf3a804

JDK-8134883

Reproduced on 8u:[Yes]

Bug: https://bugs.openjdk.java.net/browse/JDK-8134883

Patch is clean:[Yes]

JDK9 Changeset:
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/338c42ecdaf1

These issues are decreasing the stability of our applications. They are
always reproducible

with jdk built from the latest jdk8u master repo.