RFR: 8339063: [aarch64] Skip verify_sve_vector_length after native calls if SVE supports 128 bits VL only [v2]

[Fei Gao]

On Wed, 28 Aug 2024 08:51:11 GMT, Joshua Zhu <jzhu at openjdk.org> wrote:

>> Please review this minor enhancement that skips verify_sve_vector_length after native calls.
>> It works on SVE micro-architecture that only supports 128-bit vector length.
>
> Joshua Zhu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix compilation failure with --disable-precompiled-headers

src/hotspot/cpu/aarch64/aarch64_vector.ad line 158:

> 156: 
> 157:     int length_in_bytes = vlen * type2aelembytes(bt);
> 158:     if (UseSVE == 0 && length_in_bytes > FloatRegister::neon_vl) {

Should we also update `aarch64_vector_ad.m4` to avoid any mismatch :) ?

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PR Review Comment: https://git.openjdk.org/jdk/pull/20724#discussion_r1735911352