[14] RFR (S): 8226411: C2: Avoid memory barriers around off-heap unsafe accesses

[Vladimir Ivanov]

Thanks, Tobias.

>> It (almost completely) recovers performance on the microbenchmark provided in JDK-8224182 [1].
> 
> Is the remaining regression due to JDK-8226396?

Yes.

Best regards,
Vladimir Ivanov