Add LLVM bitcode to Octopus

This LLVM pass will analyze the LLVM bitcode that was emitted by an LLVM front-end (such as clang) and create a program graph of it that can be loaded into Octopus.

Building

To build, do the following:

$ cd octopus-llvm
$ mkdir build
$ cd build
$ cmake ..
$ make
$ cd ..

Running

The basic form for running the plugin is:

$ clang -Xclang -load -Xclang build/skeleton/libOctopusGraphPass.* something.c

In practice, you want to add extra options, examples are in create_octopus_graph.sh.