[lworld] RFR: 8377451: [lworld] Add ValuePayload abstraction [v17]

[Axel Boldt-Christmas]

On Mon, 9 Feb 2026 11:07:36 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> Axel Boldt-Christmas has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   ZGC Barrier assert to strict
>
> src/hotspot/share/gc/z/zBarrierSet.inline.hpp line 480:
> 
>> 478:   }
>> 479: 
>> 480:   void* dst_payload = (void*)(address(dst) + copied_bytes);
> 
> Follow-up: constify locals and consider not having the side-effect of updating `copied_bytes` in this function.

Created [JDK-8378525](https://bugs.openjdk.org/browse/JDK-8378525).

> src/hotspot/share/interpreter/interpreterRuntime.cpp line 238:
> 
>> 236: JRT_BLOCK_ENTRY(void, InterpreterRuntime::read_flat_field(JavaThread* current, oopDesc* obj, ResolvedFieldEntry* entry))
>> 237:   assert(oopDesc::is_oop(obj), "Sanity check");
>> 238: #ifdef ASSERT
> 
> Follow-up: I wonder if this assert could be folded into FlatFieldPayload.

Created [JDK-8378519](https://bugs.openjdk.org/browse/JDK-8378519).

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PR Review Comment: https://git.openjdk.org/valhalla/pull/2068#discussion_r2844911242
PR Review Comment: https://git.openjdk.org/valhalla/pull/2068#discussion_r2844913688