[8u] RFR(s) 8170153: PPC64/s390x/aarch64: Poor StrictMath performance due to non-optimized compilation

[Volker Simonis]

Hi Gustavo,

your changes look good, but you still use the new, backport bug id
8170873. Please update them to use the initial bug id 8170873.

There's also no need to create a bug for a backport manually. Once you
push a change with the original bug ID to the 8u-dev repositroy, a new
downport issue will be automatically created for you.

Once you've updated the webrevs and they are approved for 8u I can
sponsor the change for you.

Regards,
Volker



On Tue, Dec 13, 2016 at 6:57 PM, Gustavo Romero
<gromero at linux.vnet.ibm.com> wrote:
> Hi,
>
> Re-sending with the correct subject and adding the ppc-aix-port ML.
>
> Could the following webrev be reviewed please?
>
> webrev 1/2: http://cr.openjdk.java.net/~gromero/8170873/v2/
> webrev 2/2: http://cr.openjdk.java.net/~gromero/8170873/v2/jdk/
> bug       : https://bugs.openjdk.java.net/browse/JDK-8170873
>
> It's a backport of 8170153:
>
> 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/jdk9/rev/3c7b02f5fa7c
> URL 2/2   : http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/b6bad6302dc8
>
> The original change affects s390x and aarch64 as well but since both
> architectures are not present on 8u both were excluded from this new webrev
> turning it, in effect, a ppc-only fix on 8u.
>
> I understand that that change is particularly important to PPC64 since [1] is
> not planned to be backported.
>
> I've tested the same way I did on 9 (jtreg) and no regression was observed [2].
>
> I did not run against the JCK tests as performend by Martin [3]
> since I'm still in the process of solving an issue related to the OCTLA.
>
> Thank you.
>
>
> Regards,
> Gustavo
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8134780
> [2] http://mail.openjdk.java.net/pipermail/hotspot-dev/2016-November/025283.html
> [3] http://mail.openjdk.java.net/pipermail/hotspot-dev/2016-November/025317.html
>