Awesome summary @tlively. Thank you.
I think we can start working toward distributing lld with Rust, and using it for an experimental wasm backend. This is a long-term goal for many reasons (cc @japaric). I’d suggest we name it rust-lld, distribute it with every host configuration (even when unused) and put it in /bin though I know @alexcrichton is inclined to put it in rustlib/$target/bin like we do with gcc on windows.
And we can go ahead and initiate the LLVM upgrade at any time. We have to agree with @kripken on an LLVM commit and have him do the emscripten upgrade while we start the rust LLVM upgrade. I’ll send an email to both of you to make sure he’s aware of this thread.