[aarch64-port-dev ] RFC: JEP - One AArch64 Port, Not Two

[Andrew Haley]

On 08/27/2018 09:49 AM, Ningsheng Jian wrote:
> Yes, some benchmark data is unstable. We did analyze the arm64 and
> aarch64 codegen difference with microbenchmarks. AArch64 backend
> generates better code on most cases, and I believe that we have
> addressed those minor worse cases we found. E.g. JDK-8183533,
> JDK-8185786, JDK-8187601.

Mmm, and it's not really possible to show for sure that changes
generalize well. I'm still not convinced by tweaks to unrolling,
but they work spectacularly well in some small benchmarks.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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