When lli runs the below IR, it emits in-memory debug objects and registers them with the GDB JIT interface. The tests dump and check the registered information. IR has limited ability to produce complex output in a portable way. Instead the tests rely on built-in functions implemented in lli. They use a new command line flag -generate=function-name to instruct the ORC JIT to expose the built-in function with the given name to the JITed program.
debug-descriptor-elf-minimal.ll calls __dump_jit_debug_descriptor() to reflect the list of debug entries issued for itself after emitting the main module. The output is textual and can be checked straight away.
debug-objects-elf-minimal.ll calls __dump_jit_debug_objects(), which instructs lli to walk through the list of debug entries and append the encountered in-memory objects to the program output. We feed this output into llvm-dwarfdump to parse the DWARF in each file and dump their structures.
We can do the same for JITLink once D97335 has landed.
clang-tidy: warning: invalid case style for class 'jit_code_entry' [readability-identifier-naming]
not useful