On Wed, 11 Oct 2023 19:06:24 GMT, Vladimir Kozlov <[email protected]> wrote:
>> @vnkozlov Please advice if we can integrate this PR or if you would like to
>> run some tests first.
>
> Okay. I will start testing for current changes. @sviswa7 please file RFE for
> Zen 4. If we get patch for it we do followup changes in that RFE.
> @vnkozlov
> Are there any options to be sure that C2 JIT compiler is used during tests?
May be you already figure out that. Use `-XX:+PrintCompilation
-XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining -XX:-TieredCompilation` flags
(Tiered is off to use only C2) and look for something like next
82 20 java.util.Random::next (47 bytes)
@ 3 java.util.Random::next (47 bytes) inline
(hot)
@ 8 java.util.concurrent.atomic.AtomicLong::get
(5 bytes) accessor
@ 32
java.util.concurrent.atomic.AtomicLong::compareAndSet (13 bytes) inline (hot)
@ 9
jdk.internal.misc.Unsafe::compareAndSetLong (0 bytes) (intrinsic)
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PR Comment: https://git.openjdk.org/jdk/pull/16124#issuecomment-1758406966
