RFR (S): 8188133: C2: Static field accesses in clinit can trigger deoptimizations
vladimir.x.ivanov at oracle.com
Fri Feb 1 18:14:42 UTC 2019
> If we consider solving general case, I had the following idea in mind:
> compile special versions for method of not-yet-initialized classes and
> throw them away once the class is fully initialized.
> Special versions would contain 2 guards:
> (1) if holder_klass is initialized, then deoptimize and recompile;
> (2) if current_thread != thread_running_clinit, then deoptimize and
> The former eliminates initialization check once it becomes redundant and
> the latter blocks invocations from other threads until the class is
> fully initialized.
Also, former check (holder_klass is initialized) can be implemented as a
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