RFR: 8302780: Add support for vectorized arraycopy GC barriers [v3]

[Erik Österlund]

On Fri, 24 Feb 2023 10:26:41 GMT, Roberto Castañeda Lozano <rcastanedalo at openjdk.org> wrote:

>> Erik Österlund has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Update src/hotspot/cpu/x86/stubGenerator_x86_64_arraycopy.cpp
>>   
>>   Co-authored-by: Roberto Castañeda Lozano <robcasloz at users.noreply.github.com>
>
> src/hotspot/cpu/x86/stubGenerator_x86_64_arraycopy.cpp line 1831:
> 
>> 1829:   BarrierSetAssembler *bs = BarrierSet::barrier_set()->barrier_set_assembler();
>> 1830: #if COMPILER2_OR_JVMCI
>> 1831:   if ((!is_oop || bs->supports_avx3_masked_arraycopy()) && VM_Version::supports_avx512vlbw() && VM_Version::supports_bmi2() && MaxVectorSize  >= 32) {
> 
> Consider extending the test similarly in `generate_disjoint_int_oop_copy()` and `generate_conjoint_int_oop_copy()`, for consistency.

Good point. Will do.

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PR: https://git.openjdk.org/jdk/pull/12670