RFR: 8160821: VarHandle accesses are penalized when argument conversion is required [v7]

[Chen Liang]

On Fri, 5 Dec 2025 11:03:18 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> Chen Liang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Revert void special case removal due to C2 shortage causing TestZGCBarrierElision::testAtomicThenAtomicAnotherField failure
>
> test/hotspot/jtreg/compiler/c2/irTests/constantFold/VarHandleMismatchedTypeFold.java line 48:
> 
>> 46:     public static void main(String[] args) {
>> 47:         TestFramework.runWithFlags(
>> 48:             "-XX:+UnlockExperimentalVMOptions"
> 
> Why is this flag needed?

Indeed, simplified this to `TestFramework.run()`

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PR Review Comment: https://git.openjdk.org/jdk/pull/28585#discussion_r2596827495