LLVM Utility Layer

include/Utils/LLVM/ and lib/Utils/LLVM/ provide the common LLVM-facing support code reused by front-ends and analysis passes.

Main components:

• IO/ReadIR and IO/WriteIR for reading and writing LLVM modules.

• InstructionUtils and Demangle for IR inspection.

• GraphWriter and LLVMBgl for graph traversal and visualization.

• Statistics, RecursiveTimer, and Log for diagnostics.

This layer is the shared glue between Lotus analyses and LLVM infrastructure.

Using the layer

Tools should use the module I/O helpers instead of open-coding bitcode loading and writing, so diagnostics and command-line behavior remain consistent. Analysis code can use the instruction and demangling helpers when it needs to recognize IR patterns without duplicating LLVM-specific boilerplate. Keep LLVM-version compatibility work in this layer where it can be shared.

See also Utility Libraries.