LLVM_HARNESS_DISCOVERY
Discover interface functions from compiled LLVM IR (module.ll).
Sources and sinks are discovered by scanning demangled LLVM symbols for the hard-coded harness symbol templates:
harness::SourceGroup<harness::SourceLeaf<harness::SinkGroup<harness::SinkLeaf<
Controlled by AnalysisDepth: GROUP, LEAF, or BOTH. No source() / sink() declarations needed in the DSL.