RFR: 8309129: AArch64: guarantee(T != T2S) failed: "incorrect arrangement" after JDK-8307795

[Chang Peng]

On Wed, 31 May 2023 16:58:11 GMT, Alexander Zvegintsev <azvegint at openjdk.org> wrote:

>> This patch fixes the issue introduced by JDK-8307795. Since addv[1] cannot support "T2S" SIMD arrangement, we should use addp[2] in this case.
>> 
>> TEST passed on AArch64:
>> hotspot:compiler/vectorapi, jdk:jdk/incubator/vector, tier1-3
>> 
>> [1]: https://developer.arm.com/documentation/ddi0596/2020-12/SIMD-FP-Instructions/ADDV--Add-across-Vector-
>> [2]: https://developer.arm.com/documentation/ddi0596/2020-12/SIMD-FP-Instructions/ADDP--vector---Add-Pairwise--vector--
>
> Please note that the associated test is now in the problem list, see #14250

@azvegint @dcubed-ojdk Thanks, I will remove it.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/14245#issuecomment-1571205982