RFR: 8319577: x86_64 AVX2 intrinsics for Arrays.sort methods (int, float arrays) [v8]

[Srinivas Vamsi Parasa]

On Mon, 4 Dec 2023 11:48:44 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>>> But you are saying that you want to skip building this library unless you have a gcc version that supports c++17?
>>> 
>> Yes, the request is to skip building the simdsort library if GCC version is < 8 as only GCC >= 8 supports C++17 features.
>
> Then you must add logic to check for this. Now the build will just fail if building with an older gcc. That is not acceptable.

Hi Marcus (@magicus), please see the updated code which added guards to check for GCC version >= 7.5 in `src/java.base/linux/native/libsimdsort/{avx2-linux-qsort.cpp, avx512-linux-qsort.cpp}`. GCC >= 7.5 is needed to compile libsimdsort using C++17 features. Made sure that OpenJDK builds without errors using both GCC 7.5 and GCC 6.4.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16534#discussion_r1414570644