WIP: Load default value instance if the class is initialized

[a7ehuo]

trafficstars

ILGen:

• aconst_init: Load the default value instance if the class is initialized. This enhancement can be disabled by setting env variable TR_DisableLoadStaticDefaultValueInstance.

SymRef:

• Create symbol reference for default value instance of value class.

AOT (X86):

• Add new relocation record TR_RelocationRecordStaticDefaultValueInstance to materialize the default value instance slot address on AOT load.

Depends on

• [ ] https://github.com/eclipse/omr/pull/6641

Signed-off-by: Annabelle Huo [email protected]

[a7ehuo]

This PR has dependency on https://github.com/eclipse/omr/pull/6641 and should be reviewed together with it

[a7ehuo]

@dsouzai @hzongaro May I ask you to review this change along with https://github.com/eclipse/omr/pull/6641? Thank you!

[a7ehuo]

@hzongaro @dsouzai All comments are addressed. Ready for another review. Thanks!

[a7ehuo]

Removed WIP. The OMR dependency https://github.com/eclipse/omr/pull/6641 has been merged to https://github.com/eclipse-openj9/openj9-omr. This PR is ready for another review and PR build test.

[dsouzai]

AOT changes look good to me. @hzongaro do you mind being committer for this one?

[hzongaro]

Jenkins test sanity all jdk17

[a7ehuo]

@hzongaro For this PR, JDKNext standard and JDKNext valhalla should be tested as well. You probably already plan to do so. Just a reminder

[hzongaro]

Jenkins test sanity,extended xlinuxval jdknext

[hzongaro]

xlinuxval build failure appears to be unrelated to this pull request.

[hzongaro]

Jenkins test sanity+aot xlinux jdknext

[hzongaro]

Jenkins test sanity,extended xlinuxval jdknext