[8u] Request for approval for 8170873 - PPC64: Poor StrictMath performance due to non-optimized compilation

[Gustavo Romero]

Hi,

Could you please approve the backport to jdk8u-dev of the following fix:

8170153: PPC64/s390x/aarch64: Poor StrictMath performance due to non-optimized
compilation

Bug       : https://bugs.openjdk.java.net/browse/JDK-8170153
Webrev 1/2: http://cr.openjdk.java.net/~gromero/8170153/v2/
Webreb 2/2: http://cr.openjdk.java.net/~gromero/8170153/v2/jdk/
Review    : http://mail.openjdk.java.net/pipermail/hotspot-dev/2016-November/025348.html
URL 1/2   : http://hg.openjdk.java.net/jdk9/dev/rev/3c7b02f5fa7c
URL 2/2   : http://hg.openjdk.java.net/jdk9/dev/jdk/rev/b6bad6302dc8

The original change affects s390x and aarch64 as well but since both
architectures are not present on 8u I propose a new webrev which just excludes
them turning it a ppc-only fix on 8u:

Webrev 1/2: http://cr.openjdk.java.net/~gromero/8170873/
Webreb 2/2: http://cr.openjdk.java.net/~gromero/8170873/jdk/

I also need a sponsor for pushing that change if the approval is granted.

Thank you.


Best regards,
Gustavo