[clang] [llvm] [WebAssembly] Implement an alternative translation for -wasm-enable-sjlj (PR #84137)

[Sam Clegg via cfe-commits]

https://github.com/sbc100 commented:

In terms of getting this landed and tested, I wonder which path we should take:

1.  Land this now, without tests, then update emscripten then come back and flip the default, at which point the existing tests will get updated.
2. Duplicate/update the the existing tests to tests both modes, then delete those changes once we flip the default.

Personally I think I'd be happy with (1) since this is a behind and experimental flag.

What do others think?  @aheejin ?


https://github.com/llvm/llvm-project/pull/84137