[8u] RFR for backport of JDK-8164920: ppc: enhancement of CRC32 intrinsic to jdk8u-dev
gromero at linux.vnet.ibm.com
Fri May 25 12:12:34 UTC 2018
Do you have any recommendation about that CRC32 backport I sent some time ago?
Do you think it's feasible?
The more radical changes I did (to make it PPC64-only) was in your change "8086069".
The other changes a quite straightforward.
On 03/26/2018 06:37 PM, Gustavo Romero wrote:
> Hi Goetz, Lutz, and Hiroshi,
> I would like to backport the CRC32 intrinsics [1,3] and so I've
> backported the following patchset necessary to accomplish that:
>  8086069: Adapt runtime calls to recent intrinsics to pass ints as long (Needed by 8131048. Changes in shared code were removed)
> Author: goetz
>  8131048: ppc: implement CRC32 intrinsic
> Author: lutz
>  8077838: Recent developments for ppc. (Just the implementation of has_vpmsumb() is needed by 8164920)
> Author: goetz
>  8164920: ppc: enhancement of CRC32 intrinsic (Hiroshi's intrinsic for C2)
> Author: hiroshi
> None applied cleanly so could you please review them? I kept them not
> squashed in order to ease the review. Please let me know if a single patch
> is better. The patchset is PPC64-only and I tested it on Linux PPC64 LE, so
> I need a help to test on AIX and Linux BE as well.
> The bulk of changes are in  and .
> I'm aware that SAP is heavily working on JDK11 right now but since the
> absence of the CRC32 intrinsics hurts workloads like Apache Cassandra
> I would be very glad if that change could make its way into jdk8u.
> Thank you.
> Best regards,
>  8086069: Adapt runtime calls to recent intrinsics to pass ints as long (https://bugs.openjdk.java.net/browse/JDK-8086069)
>  8131048: ppc: implement CRC32 intrinsic (https://bugs.openjdk.java.net/browse/JDK-8131048)
>  8077838: Recent developments for ppc. (https://bugs.openjdk.java.net/browse/JDK-8077838)
>  8164920: ppc: enhancement of CRC32 intrinsic (https://bugs.openjdk.java.net/browse/JDK-8164920)
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