RFR: 8301739: AArch64: Add optimized rules for vector compare with immediate for SVE [v3]

[Chang Peng]

On Thu, 20 Apr 2023 08:15:49 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Chang Peng has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Refactor some code
>
> src/hotspot/cpu/aarch64/aarch64_vector_ad.m4 line 3656:
> 
>> 3654:   ins_pipe(pipe_slow);
>> 3655: %}')dnl
>> 3656: VMASKCMP_SVE_IMM_I(immI5, cmp)
> 
> This is tricky to review because the two macros here seems to be almost, but not exactly, the same. Why is that?

This patch adds rules for vector comparing with immediate. These immediate may have different types and his manifests as different ConNodes in middle-end (ConI and ConL). ConI and ConL have  different methods to get the value, i.e., get_int() for ConI and get_long() for ConL. We should use this value in predicate, so I set two macros, one for integer (byte, short and int) and another one for long.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13200#discussion_r1172303063