RFR: 8259948: Aarch64: Add cast nodes for Aarch64 Neon backend [v3]

[Andrew Haley]

On Fri, 6 Aug 2021 15:38:04 GMT, Wu Yan <wuyan at openjdk.org> wrote:

>> src/hotspot/cpu/aarch64/aarch64_neon_ad.m4 line 200:
>> 
>>> 198:   %}
>>> 199:   ins_pipe(pipe_slow);
>>> 200: %}
>> 
>> I'm sure you can find a more brief way to write these four patterns. Please do.
>
> OK, refactored.

Please do so for the others. Thanks.

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PR: https://git.openjdk.java.net/jdk/pull/4839