MSVC always was the default backend for Windows platforms.
Codegen was still done via LLVM. LLVM supports the MSVC _runtime_, here they're talking about using their (arguably worse) backend directly to generate code and do optimisations
alt Hacker News
Codegen was still done via LLVM. LLVM supports the MSVC _runtime_, here they're talking about using their (arguably worse) backend directly to generate code and do optimisations