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

[Wu Yan]

On Wed, 18 Aug 2021 08:55:35 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Wang Huang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   fix codes
>
> src/hotspot/cpu/aarch64/aarch64_neon.ad line 430:
> 
>> 428:   %}
>> 429:   ins_pipe(pipe_class_default);
>> 430: %}
> 
> These VectorCast patterns should be combined.

Sorry, what does "combine" mean. These VectorCast patterns are generated by https://github.com/openjdk/jdk/blob/aa4937cb012185425c852fe582aac41b6a477e77/src/hotspot/cpu/aarch64/aarch64_neon_ad.m4#L256 
the code is already relatively concise.

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