Is there a way using LLVM and clang++ to generate a Control Flow Graph with x86 basic blocks?

Question

I've referenced this and am able to generate control flow graphs using clang++ and LLVM's opt, but the CFG's basic blocks contain LLVM IR. Instead, I would like the basic blocks to contain x86 assembly.

Ideally this tool would be useful for visualizing optimization passes that a compiler makes to the code and ultimately the assembly.

Thanks!