Can I use LLVM to compile the examples?

Hi, experts. I am trying out Corstone 300 examples from AWS (microspeech, etc).
It seems like the current build chain relies on cbuild.sh.
I wonder if I can instead use LLVM to replace the entire toolchain, or if some part (e.g., maybe U-55 related code?) is not supported.

I have been using LLVM for my other ARM chips and really liked it, so I would rather not switch if using LLVM is possible.

Thank you,