[13] RFR (S): 8218879: Keep track of memory accesses originated from Unsafe

[Vladimir Ivanov]

> wouldn't it make sense to add this information to MemNode::dump_spec()? Otherwise it's only
> available via a debugger.

Yes, good idea. Updated webrev in-place.

Best regards,
Vladimir Ivanov

> 
> Best regards,
> Tobias
> 
> 
> On 13.02.19 00:30, Vladimir Ivanov wrote:
>> http://cr.openjdk.java.net/~vlivanov/8218879/webrev.00/
>> https://bugs.openjdk.java.net/browse/JDK-8218879
>>
>> It may be useful to differentiate memory accesses originated from bytecode and Unsafe.
>>
>> While JVM performs access checks for field accesses and range checks for array accesses, it's user
>> responsibility to perform all necessary checks to ensure safety when it comes to Unsafe.
>>
>>  From compiler perspective, it may be useful to distinguish between those when it matters what kind
>> of checks have been performed.
>>
>> Testing: hs-precheckin-comp, tier1-5
>>
>> Best regards,
>> Vladimir Ivanov