trying to implementing collafl.
Inorder to use this, we have to install llvm gold linker first. check this out.
I only modify llvm_mode/afl-llvm-pass.so.cc file to support computing hash described in CollAFL: Path Sensitive Fuzzing paper
I hope anyone who knows llvm well can help me implementing the rest, I am new in this field, I can only implement some part of it.