RFR: 8358546: [premain] AOT code generation should support UseCompactObjectHeaders

[Vladimir Kozlov]

On Fri, 6 Jun 2025 14:11:00 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> src/hotspot/share/code/aotCodeCache.cpp line 771:
>> 
>>> 769:   }
>>> 770: 
>>> 771:   if ((_compressedKlassBase == nullptr || CompressedKlassPointers::base() == nullptr) && (_compressedKlassBase != CompressedKlassPointers::base())) {
>> 
>> I am guessing we only disable `AOTStubCaching`, and not `AOTCodeCaching` wholesale, because the normal code deals with this properly. Correct?
>
> yes
> I still did not figure out what is wrong with stubs.

Hmm, actually no. Normal JIT code will be also affected except adapters I think. This code from mainline and have to be adjusted for premain.

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PR Review Comment: https://git.openjdk.org/leyden/pull/78#discussion_r2132287456