RFR (S): 8250628: ZGC: `fixup_partial_loads` was removed, but still are referenced

[Albert Yang]

I have further tested with tier1 and vmTestbase_nsk_jvmti (with the 
patch or explicitly setting them `true`), and find no failure. Any other 
tests that might be relevant?

On 2020-08-01 09:14, Kim Barrett wrote:
>> On Jul 29, 2020, at 8:19 AM, Albert Yang <albert.m.yang at oracle.com> wrote:
>>
>> Hi,
>>
>> https://bugs.openjdk.java.net/browse/JDK-8250628
>>
>> http://cr.openjdk.java.net/~lkorinth/albert/8250628/0/
>>
>> Case 2&3 can be removed, since all roots will go through the load barrier before a safepoint. To be safe, I have tried setting them to true via `FLAG_SET_DEFAULT(_, true);`, and no failures are observed for hotspot-gc.
>>
>> Tested: hotspot-gc
>>
>> /Albert
> The change looks okay, but I'm not sure about the testing.
>
> VerifyBeforeIteration is (only) used by jvmti heap iteration
> functions, and I don't think the hotspot_gc test group includes any
> jvmti tests.
>
-- 
/Albert