Comment by synthetigram

What isn't clear to me is why tail calls need to be implemented in WASM, rather than in the compiler? The post linked to Josh Habermans post on tail calls, which show how tail calls can help the compiler decide where to inline (cool!). But that was needed for the C++ text, not the LLVM code. It feels like tail calls are too high level of a concept to be in an "assembly" language.