WebAssembly's closest analog would be LLVM's IR, which many compilers like clang (for C/C++) or rustc output so that they can use LLVM's existing codegen. In We

WebAssembly's closest analog would be LLVM's IR, which many compilers like clang (for C/C++) or rustc output so that they can use LLVM's existing codegen. In WebAsm's case, however, the backend would be the different browsers and their sandboxes. The C ABI describes a common calling convention and a few other details to allow different compilers to use each other's binaries, but C is hardly a common language in the way WebAssembly is meant to be.