Redux is a playground in which I have been experimenting with compiler development using LLVM. I can't promise you'll find HEAD in a working state, but there is a Makefile which you can use to compile redux. You're far better off reading the code than attempting to make redux do something useful for you.
But if you insist:
Usage: redux [options] file...
Options:
-d Extremely verbose output
-i Launch interactive mode
-c Compile redux files specified by filename and output
-z Enable LLVM code optimizations
redux will parse and just-in-time compile anything it finds on STDIN.