[aarch64-port-dev ] RFR (XS) 8229123: Revert build fixes for aarch64/zero

[Aleksey Shipilev]

On 8/5/19 12:21 PM, Andrew Dinn wrote:
> Ah, sorry, I think I got the wrong end of the stick here. You are
> talking about deleting this from jdk8u-aarch64 in order not to push it
> up into jdk8u.

Yup. We have to explain why the divergence from 8u upstream is needed. If there is no good
explanation, I think the change needs to go. If it does not happen in this RFR, it would inevitably
pop up when the "upstreaming" webrev is generated:

https://builds.shipilev.net/patch-openjdk-jdk8-aarch64/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp.sdiff.html

> However, if anyone has actually been using zero then they I think they
> may well have been using a Linux build and, for recent builds, that
> means they will likely have been using the jdk8u-aarch64 code.

I am pretty sure hardly anybody builds/maintains aarch64/zero to begin with, and if somebody does,
they probably either against 8u upstream and have only Zero, or they go full-JIT version from
aarch64-port, not something in between.

-- 
Thanks,
-Aleksey