compiler: Use LLVM's Comdat support Acting on these long-ago issues: - https://github.com/rust-lang/rust/issues/46437 - https://github.com/rust-lang/rust/issues/68955
compiler: Use LLVM's Comdat support Acting on these long-ago issues: - https://github.com/rust-lang/rust/issues/46437 - https://github.com/rust-lang/rust/issues/68955