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  1. JDK
  2. JDK-8334247

[PPC64] Consider trap based nmethod entry barriers

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      BarrierSetAssembler::nmethod_entry_barrier currently uses a comparison and an explicit call to StubRoutines::method_entry_barrier(). We could replace it by a conditional trap instruction and dispatch to the stub in the signal handler. The old code should still be usable. The new code could be made available by a new diagnostic flag similar to e.g. TrapBasedICMissChecks.

            varadam Varada M
            mdoerr Martin Doerr
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