Improvements for Relocatable Compilations

[dsouzai]

Ongoing issue tracking improvements for AOT

• Add Symbol Validation Manager Add Symbol Validation Manager #3011
• Exploit Symbol Validation Manager Exploit Symbol Validation Manager #3012
• Enable String Peepholes Enable String Peepholes under AOT #3013
• Enable CheckCast Inlining Enable Check Cast Inlining under AOT #3014
• Other Misc AOT Improvements Misc AOT Improvements #3015
• Validate Method Symbols Use Symbol Validation Manager for Method Symbols #3029
• Clean up the logic in TR::SymbolValidationManager::storeValidationRecordIfNecessary Clean up the logic in TR::SymbolValidationManager::storeValidationRecordIfNecessary  #3032
• Don't retry an AOT compilation if it fails for certain reasons. Don't retry an AOT compilation if it fails for certain reasons #3033
• Documentation to help developers understand when they need to add a new validation record. Add further SVM documentation #4762
• Add a Guaranteed ID for a NULL symbol (addressed in Make SVM generate few enough records to enable it during startup #3752)
• Add a validation record for isClassVisible to remember the answer Add a validation record for isClassVisible #4765
• AOT support for FSD AOT Support for FSD #11376
• TR_RelocationRecordClassAddress is relocated incorrectly on platforms that use an ordered pair TR_RelocationRecordClassAddress is relocated incorrectly on platforms that use an ordered pair #15696
• Enable SVM during startup Re-Enable SVM during startup #5195
• Enable Symbol Validation Manager on all platforms Enable Symbol Validation Manager on all platforms #3028
• Ensure code guarded by canDevirtualizeDispatch does not impact trivial devirtualization opportunities under AOT Revisit canDevirtualizeDispatch query under AOT #3030
• Clean up AOT infrastructure Clean up AOT infrastructure #3031
• Implement class sub-chains Implement class sub-chains #4847
• AOT support for JProfiling AOT support for JProfiling #4848
• AOT support for OSR AOT Support for OSR #4849
• AOT support for NextGenHCR AOT Support for NextGenHCR #11377
• AOT support for Method Handles AOT Support for Method Handles (OpenJDK Implementation) #19993
• AOT Support for Value Types AOT Support for Value Types #15479
• Minimize AOT load failures Minimize AOT Load failures #4897
• Enable disabled loads of constants in AOT Enable disabled loads of constants in AOT #9106
• TR_MethodObject is relocated incorrectly TR_MethodObject is relocated incorrectly #6479
• Re-enable inlining of checkcast/instanceof tests Re-Enable Profiled Class test for instanceof/checkcast in AOT when SVM is enabled #12246
• Fix test failures in AOT PR tests Fix test failures in AOT PR tests #6057

Related OMR issue:
eclipse-omr/omr#3029

[dsouzai]

@mstoodle @vijaysun-omr @mpirvu @jdmpapin

[mstoodle]

Request: Documentation to help developers understand when they need to add a new validation record.

[dsouzai]

@mstoodle @vijaysun-omr @mpirvu @jdmpapin I've updated this issue to reflect the fact that there is only one OMR and OpenJ9 PR each (so that guys know which is the canonical PR for review purposes)

[pshipton]

It doesn't seem like it, but is any update to the user guide required for this change? New command line options or diagnostics or ?
https://www.eclipse.org/openj9/docs/aot/

[dsouzai]

No new updates; there are a couple of JIT options to control the new infrastructure, but I don't know if that should be explicitly documented (considering that the goal is to have the new infrastructure eventually be the default).

[mstoodle]

Some duplication with what's here, but an issue to collect the OMR pieces of ongoing work is here: eclipse-omr/omr#3029 .

[irinarada]

@dsouzai - any update?

[vijaysun-omr]

Code was delivered yesterday to OpenJ9. So this is now done for v0.11 of OpenJ9.

[pshipton]

The improvements for the 0.12 release have been delivered. This will continue in the next release.