RFR: JDK-8206407: Primitive atomic_cmpxchg_in_heap_at() in BarrierSet::Access needs to call non-oop raw method

[Aleksey Shipilev]

On 07/05/2018 04:42 PM, Roman Kennke wrote:
> BarrierSet::Access:atomic_cmpxchg_in_heap_at() is currently calling
> Raw::oop_atomic_cmpxchg_at() which is obviously wrong.
> 
> We've been lucky because primitive is not bound in default OpenJDK.
> 
> Even in Shenandoah land we've been lucky because primitives don't match
> narrowOop and thus don't get (attempted to) encoded/decoded.
> 
> Lucky us.
> 
> Let's fix it anyway:
> http://cr.openjdk.java.net/~rkennke/JDK-8206407/webrev.00/

Fix looks good to me.

-Aleksey

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