Release v2.2

[ahueck]

Support for LLVM versions up to 22 and introduction of global variables as type descriptors for runtime type registration. Parallel building with TypeART is supported.

Key Changes

• LLVM Support: Updates for compatibility with LLVM 21 and 22, including pass manager and API adjustments.
• Global Type Descriptors: Implementation of a type serialization mode that emits type information as global variables with _typeart_ prefixes within each LLVM module.
• Instrumentation Pass: TypeIDProvider to manage type IDs to support different type serialization modes (inline (global type descriptor for all types), hybrid (global type descriptor for user-def types), file (yaml file for layout of user-def types)).
• Runtime lib:
  • Reduction of symbol visibility
  • Addition of GlobalTypeDefCallbacks for module-level type initialization.

Misc

• Updates for header guards and license headers.
• README with updated build instructions and architecture details.
• Testing: Addition of test cases for inlined types and runtime global registration.

[coveralls]

Coverage Report for CI Build 24397737785

Coverage increased (+1.3%) to 90.264%

Details

• Coverage increased (+1.3%) from the base build.
• Patch coverage: 55 uncovered changes across 9 files (880 of 935 lines covered, 94.12%).
• 17 coverage regressions across 3 files.

Uncovered Changes

File	Changed	Covered	%
lib/passes/TypeARTPass.cpp	155	138	89.03%
lib/runtime/AllocationTracking.cpp	56	41	73.21%
lib/passes/instrumentation/TypeARTFunctions.cpp	106	100	94.34%
lib/passes/analysis/MemInstFinder.cpp	44	39	88.64%
lib/runtime/GlobalTypeDefCallbacks.cpp	116	111	95.69%
lib/passes/support/Util.h	13	11	84.62%
lib/runtime/GlobalTypeDefCallbacks.h	6	4	66.67%
lib/typelib/TypeDB.cpp	6	4	66.67%
lib/runtime/TypeResolution.cpp	22	21	95.45%

Coverage Regressions

17 previously-covered lines in 3 files lost coverage.

File	Lines Losing Coverage	Coverage
lib/typelib/TypeDB.cpp	11	78.35%
lib/support/System.cpp	5	82.05%
lib/runtime/AllocationTracking.cpp	1	91.67%

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Coverage Stats

Relevant Lines:	5413
Covered Lines:	4886
Line Coverage:	90.26%
Coverage Strength:	38873.79 hits per line

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💛 - Coveralls