[8u-dev] RFA: JDK-8068440 and JDK-8073159

[Fairoz Matte]

Hi,

Please approve the backport of JDK-8068440 and JDK-8073159 to 8u-dev 

JBS bug - https://bugs.openjdk.java.net/browse/JDK-8068440  and
	https://bugs.openjdk.java.net/browse/JDK-8073159 

Webrev - http://cr.openjdk.java.net/~fmatte/8068440/webrev.01/ 

Review thread - http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2018-October/030887.html

Thanks,
Fairoz