Using specific command line arguments make the compilation take very long

[megalithos]

I try to build a simple hello world program with llvm-obfuscator but using commands like
-mllvm -sub -mllvm -sub_loop=10 -> takes very long to build
-mllvm -bcf -> takes very long to build

I have tried max 15 minutes of building with these commands and no success.

I am also using -v argument for verbose mode.
The build process is stuck at this line: 1>End of search list.