RFR: 8144856 (XS): Fix assert in CompiledStaticCall::set_to_interpreted

[Dean Long]

I'm wondering if this fix is enough, because 8067247 reported the same 
problem, and it is still happening,
even after the fix on x86 to read the data value only once.

dl

On 12/11/2015 1:37 AM, Jamsheed C m wrote:
> Hi All,
>
>
> Summary: Assert code in CompiledStaticCall::set_to_interpreted is 
> fixed. Previous implementation did multiple reads for multiple valid 
> state check in same assert for the MT safe updates that can happen 
> from other threads. This could cause bogus failures as after each read 
> state could have changed. As a fix to this, made the code to read the 
> value at once.
>
> Bug:https://bugs.openjdk.java.net/browse/JDK-8144856
>
> webrev: http://cr.openjdk.java.net/~thartmann/8144856/webrev.00/
>
> Testing: jprt hotspot.
>
> Thanks and Best Regards,
> Jamsheed
>
>