{"ast_node_type":"function","tokens":[{"end":91,"kind":"keyword","start":0,"text":"pub(crate)"}]}
pub(crate) fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> Option<LLVMFeature<'a>> {
/// if the oldest tested / supported LLVM version doesn't yet support the relevant intrinsics.
    let arch = if sess.target.arch == "x86_64" {