Following the JDK-8154755, we need to push the VM intrinsics for weakCompareAndSetVolatile too.
            
- blocks
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JDK-8141635 Implement VarHandles/Unsafe intrinsics on POWER
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     - Resolved
 
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JDK-8141633 Implement VarHandles/Unsafe intrinsics on AArch64
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     - Resolved
 
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JDK-8141634 Implement VarHandles/Unsafe intrinsics on SPARC
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     - Resolved
 
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- relates to
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JDK-8154755 Add a VarHandle weakCompareAndSet with volatile semantics
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     - Resolved
 
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