LLVM dot-callgraph is one of the LLVM passes that will generate dot files of the
program graph. Apart from dot-callgraph, there are also the following passes:
dot pass nameDescriptiondot-callgraphPrint call graph to 'dot' filedot-cfgPrint
CFG of function to 'dot' filedot-cfg-onlyPrint CFG of function to 'dot&