[aarch64-port-dev ] RFR: 8081289: aarch64: add support for RewriteFrequentPairs in interpreter

[Edward Nevill]

Hi,

Just a polite ping. I submitted this patch for review by a JDK9 reviewer
over a week ago and there has been no response.

This patch was contributed by Alexander Alexeev who is a new contributer to
OpenJDK.

The patch affects only _arch64 files and both Alexander and I have verified
it by running JTreg hotspot with -Xint.

Thanks for your help,
Ed,

On 27 May 2015 at 14:21, Edward Nevill <edward.nevill at linaro.org> wrote:

> Hi,
>
> The following webrev adds support for RewriteFrequentPairs to the template
> interpreter for aarch64.
>
> http://cr.openjdk.java.net/~enevill/8081289/webrev.00
>
> This was contributed by Alexander Alexeev (
> alexander.alexeev at caviumnetworks.com)
>
> This gives a small improvement to the interpreter on aarch64, and brings
> it in line with all the other ports (x86, sparc, ppc, zero) which all
> support RewriteFrequentPairs.
>
> I have done some performance measurement using -Xint with some micro
> benchmarks and I see a small improvement on each.
>
> java dhrystone: +9%
> embedded caffeinemark: +4%
> grinderbench: +1%
> dacapo (avrora): +1%
>
> Tested with hotspot jtreg:-
>
> Original: Test results: passed: 787; failed: 24; error: 44
> With patch: Test results: passed: 785; failed: 24; error: 46
>
> The difference in the # of errors is due to timeouts because we are
> running -Xint.
>
> Please review and if OK I will push.
>
> All the best,
> Ed.
>
>
>