RFR: 8270517: Add Zero support for LoongArch [v2]

[Ao Qi]

On Thu, 15 Jul 2021 07:42:33 GMT, Ao Qi <aoqi at openjdk.org> wrote:

>> LoongArch is a new RISC ISA. This issue proposes adding Zero support for LoongArch. Only 64-bit support is proposed at present.
>> 
>> linux-loongarch64-zero-{release, fastdebug} build tested:
>> 
>> $ ./build/linux-loongarch64-zero-fastdebug/jdk/bin/java -version
>> openjdk version "18-internal" 2022-03-15
>> OpenJDK Runtime Environment (fastdebug build 18-internal+0-adhoc.aoqi.jdk)
>> OpenJDK 64-Bit Zero VM (fastdebug build 18-internal+0-adhoc.aoqi.jdk, interpreted mode)
>
> Ao Qi has updated the pull request incrementally with one additional commit since the last revision:
> 
>   removed redundant whitespaces

I apologized that I type "/integrate" too early. I will pay close attention to this issue in the next few days in case any problems arise.

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PR: https://git.openjdk.java.net/jdk/pull/4787