llvm-project

0f032f19 - [LifetimeSafety] Fix duplicate loan generation for ImplicitCastExpr (#153661)

[LifetimeSafety] Fix duplicate loan generation for ImplicitCastExpr (#153661) This PR fixes a bug in the lifetime safety analysis where `ImplicitCastExpr` nodes were causing duplicate loan generation. The changes: 1. Remove the recursive `Visit(ICE->getSubExpr())` call in `VisitImplicitCastExpr` to prevent duplicate processing of the same expression 2. Ensure the CFG build options are properly configured for lifetime safety analysis by moving the flag check earlier 3. Enhance the unit test infrastructure to properly handle multiple loans per variable 4. Add a test case that verifies implicit casts to const don't create duplicate loans 5. Add a test case for ternary operators with a FIXME note about origin propagation These changes prevent the analysis from generating duplicate loans when expressions are wrapped in implicit casts, which improves the accuracy of the lifetime safety analysis.