[clang] [llvm] [X86] Enhance kCFI type IDs with a 3-bit arity indicator. (PR #117121)

ojeda wrote: > looks like rust is already tracking and willing to support it? > [Rust-for-Linux/linux#1132](https://github.com/Rust-for-Linux/linux/issues/1132) > (thanks @ojeda) You're welcome! Just in case: if the question is about the entry I added today, then that entry is intended to tra

[clang] [llvm] [X86] Extend kCFI with a 3-bit arity indicator (PR #121070)

@@ -254,6 +254,7 @@ FEATURE(is_trivially_constructible, LangOpts.CPlusPlus) FEATURE(is_trivially_copyable, LangOpts.CPlusPlus) FEATURE(is_union, LangOpts.CPlusPlus) FEATURE(kcfi, LangOpts.Sanitize.has(SanitizerKind::KCFI)) +FEATURE(kcfi_x86_arity, LangOpts.Sanitize.has(Sanitize