[aarch64-port-dev ] RFR: JDK-8184900 AArch64: Fix overflow in immediate cmp instruction

[Felix Yang]

Hi,

    Here is the history:

    For jdk9: issue was fixed by: 8161190: AArch64: Fix overflow in
immediate cmp instruction (
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/fbd5edf4d6e3). But this
was not backport to jdk8u-aarch64.

    For jdk10: issue reintroduced by: 8179444: AArch64: Put zero_words on a
diet (http://hg.openjdk.java.net/jdk10/jdk10/hotspot/rev/bd7fe2f1094d) and
was fixed recently by
http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/23e687f0c874

    For jdk8u-aarch64 repo, I'm backporting patch for 8161190:
http://cr.openjdk.java.net/~fyang/8161190-backport/webrev.00/

    Tested with JTreg hotspot, OK to push?

Thanks,
Felix

On 26 July 2017 at 18:48, Felix Yang <felix.yang at linaro.org> wrote:

> I haven't look into the difference.  But I can take a look if you want.
>
> On 26 July 2017 at 18:40, Andrew Haley <aph at redhat.com> wrote:
>
>> On 26/07/17 11:33, Felix Yang wrote:
>> > Shall I do a backport for jdk8u-aarch64 repo? It has the same issue.
>> JDK9 seems fine.
>>
>> Do you know why there is such a difference between 8 and 9?
>>
>> --
>> Andrew Haley
>> Java Platform Lead Engineer
>> Red Hat UK Ltd. <https://www.redhat.com>
>> EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
>>
>
>