| commit | 752e31c27c0d2888e23db9db63dedc316dbaa1a4 | [log] [tgz] |
|---|---|---|
| author | Utkarsh Saxena <usx@google.com> | Wed Jul 16 16:19:51 2025 +0200 |
| committer | GitHub <noreply@github.com> | Wed Jul 16 16:19:51 2025 +0200 |
| tree | 4217313a6311984b08f501a430f2411c6c282049 | |
| parent | a944e861f99f2bea9f2f5015deb52c1d82ac4f8a [diff] |
[LifetimeSafety] Make the dataflow analysis generic (#148222) Refactored the lifetime safety analysis to use a generic dataflow framework with a policy-based design. ### Changes - Introduced a generic `DataflowAnalysis` template class that can be specialized for different analyses - Renamed `LifetimeLattice` to `LoanPropagationLattice` to better reflect its purpose - Created a `LoanPropagationAnalysis` class that inherits from the generic framework - Moved transfer functions from the standalone `Transferer` class into the analysis class - Restructured the code to separate the dataflow engine from the specific analysis logic - Updated debug output and test expectations to use the new class names ### Motivation In order to add more analyses, e.g. [loan expiry](https://github.com/llvm/llvm-project/pull/148712) and origin liveness, the previous implementation would have separate, nearly identical dataflow runners for each analysis. This change creates a single, reusable component, which will make it much simpler to add subsequent analyses without repeating boilerplate code. This is quite close to the existing dataflow framework!
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