RFR: 8320448: Accelerate IndexOf using AVX2 [v34]

Thu May 23 23:00:10 UTC 2024

On Thu, 23 May 2024 21:56:39 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> src/hotspot/cpu/x86/stubGenerator_x86_64.cpp line 4250:
>> 
>>> 4248:   generate_chacha_stubs();
>>> 4249: 
>>> 4250:   if ((UseAVX == 2) && EnableX86ECoreOpts && VM_Version::supports_avx2()) {
>> 
>> `#ifdef COMPILER2` around this code to exclude JVMCI only case.
>
> You don't need to check `VM_Version::supports_avx2()` because we reset `UseAVX` if avx2 is not supported.

Done.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16753#discussion_r1612396114