RFR: 8343827: RISC-V: set AlignVector as false if applicable to enable SLP

[Hamlin Li]

On Tue, 12 Nov 2024 00:22:27 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> hello Hamlin, this could to be wrong.
>> for example: kendryte 230 with c908 core with rv64gcv 
>> it has fast misaligned access but only for scalars(rv64gc), not for vectors(rvv)
>> i dont know if it's just a corner case or a possible common practice in future.
>
>> hello Hamlin, this could to be wrong. for example: kendryte 230 with c908 core with rv64gcv it has fast misaligned access but only for scalars(rv64gc), not for vectors(rvv) i dont know if it's just a corner case or a possible common practice in future.
> 
> Interesting. Could it be an issue for the kernel running on this platform? I don't understand why it would declare fast misaligned access when it's not the case for the vector part.

@RealFYang @luhenry just made a minor improvement, can you take another look?

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PR Comment: https://git.openjdk.org/jdk/pull/21974#issuecomment-2486107707