Rust tends to exercise code paths in LLVM that clang doesn't, so from Rust's perspective LLVM was never particularly stable (e.g. pointer aliasing has been brok

Rust tends to exercise code paths in LLVM that clang doesn't, so from Rust's perspective LLVM was never particularly stable (e.g. pointer aliasing has been broken in LLVM for years). In that case it's better to get fixes for known bugs in LLVM ASAP.