RFR: 8345178: RISC-V: Add gtests for narrow cmpxchg [v2]

[Fei Yang]

On Fri, 29 Nov 2024 14:01:24 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

>> Hi, please consider.
>> 
>> This adds tests of aligned narrow cmpxchg.
>> 
>> 
>> Note: Google Test filter = *RiscV*
>> [==========] Running 5 tests from 1 test suite.
>> [----------] Global test environment set-up.
>> [----------] 5 tests from RiscV
>> ...
>> [ RUN      ] RiscV.cmpxchg_int16_lr_sc_vm
>> [       OK ] RiscV.cmpxchg_int16_lr_sc_vm (2 ms)
>> [ RUN      ] RiscV.cmpxchg_int8_lr_sc_vm
>> [       OK ] RiscV.cmpxchg_int8_lr_sc_vm (1 ms)
>> [ RUN      ] RiscV.cmpxchg_int16_maybe_zacas_vm
>> [       OK ] RiscV.cmpxchg_int16_maybe_zacas_vm (1 ms)
>> [ RUN      ] RiscV.cmpxchg_int8_maybe_zacas_vm
>> [       OK ] RiscV.cmpxchg_int8_maybe_zacas_vm (1 ms)
>> [----------] 5 tests from RiscV (20831 ms total)
>> 
>> [----------] Global test environment tear-down
>> [==========] 5 tests from 1 test suite ran. (20834 ms total)
>> [  PASSED  ] 5 tests.
>> 
>> 
>> Executed with -XX:+UnlockExperimentalVMOptions -XX:+UseZacas
>> 
>> Thanks, Robbin
>
> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove CMF barrier

Thanks.

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Marked as reviewed by fyang (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/22445#pullrequestreview-2471563946