[vectorIntrinsics] RFR: 8258072: Add Reinterpret nodes implementation for Arm SVE [v2]

[Xiaohong Gong]

On Thu, 7 Jan 2021 02:26:20 GMT, Wang Huang <whuang at openjdk.org> wrote:

>> Add reduction nodes support for Arm SVE. Add the backend codegen for node like "VectorReinterpret" .
>> In this patch, We implement these instructs: 
>> *  reinterpret (src == dst)
>> *  reinterpretResize, including,
>>   1）  reinterpret（Expand） (src < dst)
>>   2） reinterpret（Shrink） (src > dst)
>> 
>> At the same time, we fix a bug (JDK-8258989) because it is not merged in panama-vector/vectorIntrinsics.
>
> Wang Huang has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR.

src/hotspot/cpu/aarch64/aarch64_sve_ad.m4 line 374:

> 372:   ins_pipe(pipe_class_empty);
> 373: %}')dnl
> 374: REINTERPRET(16)

Can it directly use the instruct itself instead of the macro here?

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PR: https://git.openjdk.java.net/panama-vector/pull/30