RFR: Introduce ShenandoahSelfFixing flag

[Aleksey Shipilev]

On 7/3/19 4:37 PM, Roman Kennke wrote:
>> On 7/3/19 1:40 PM, Roman Kennke wrote:
>>> http://cr.openjdk.java.net/~rkennke/sfx-flag/webrev.00/
>>
>> Looks good. I wonder if that check should be in ShenandoahBarrierC2Support::get_load_addr itself.
> 
> Yes, that was my initial thought too. But then it would uselessly create
> the visited set, and check the flag for each recursive call too. It
> doesn't hurt much, but this way seems cleaner. The block could be
> extracted to another method though...?

Whatever is simpler. We can leave it as is.

-- 
Thanks,
-Aleksey