There was, but it was removed in LLVM 3.1 [1].

It seems as there have been some attempts to revitalize it [2] but these are targeting older versions and would probably require a lot more work to ever get back in-tree.

[1] http://releases.llvm.org/3.1/docs/ReleaseNotes.html

[2] https://github.com/JuliaComputing/llvm-cbe