RFR: 8343767: Enumerate StubGen blobs, stubs and entries and generate code from declarations [v13]

[Andrew Dinn]

On Thu, 30 Jan 2025 12:50:29 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> @iwanowww @TheRealMDoerr The x86 failure happens when the test sets code cache segment size and alignment both to 1024. There are so many stubs in the compiler blob on x86_64 that this requires an extra 8000 bytes to be added to the current blob size. The slop for this case is only 900 bytes but the test is a fairly unrealistic scenario. With both values set to 512 we have over 13000 bytes of slop. So, I think I have added enough for realistic purposes.
>
> @adinn : Witnessed build errors after this change. Seems that this PR needs rebase before merging. It's strange that the bot didn't catch the merge conflicts in files like `src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp` or `src/hotspot/cpu/riscv/stubGenerator_riscv.cpp`.

@RealFYang @TheRealMDoerr
Please verify fix prepared in [PR 23368](https://github.com/openjdk/jdk/pull/23368) on riscv/ppc. GHA for the pR should also confirm it is ok.

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PR Comment: https://git.openjdk.org/jdk/pull/21957#issuecomment-2624591895