[clang] [lld] [llvm] [WebAssembly] Enable nontrapping-fptoint and bulk-memory by default. (PR #112049)

[Heejin Ahn via cfe-commits]

https://github.com/aheejin approved this pull request.

This LGTM, but I guess we need to wait until Emscripten disables them by default, because there are some failing Emscripten tests and Binaryen doesn't yet have lowering passes for these. I don't think we need to block this on all these; we would just need to disable these two feature in Emscripten by default in the meantime.

https://github.com/llvm/llvm-project/pull/112049