An interface which takes an LLVM value at any point in the LLVM transformations pipeline and returns a string corresponding to the equivalent source-level expression. We are especially interested in using this interface to map addresses used in load/store instructions to equivalent source-level memory references. The primary objective of this project is to enhance the effectiveness of compiler-generated remarks and analysis reports for code optimization. These messages, while often comprehensive, lack direct connections to the corresponding source-level expressions. The goal is to bridge this gap by utilizing LLVM's intrinsic functions, which establish mappings between LLVM program entities and source-level expressions. The project specifically focuses on utilizing these intrinsic functions to generate or derive source expressions from LLVM values. This functionality is particularly important for enhancing memory access optimizations, including the reporting of memory access dependences that hinder vectorization.