{"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"(\"aarch64\","}]}
        ("aarch64", "fpmr") => None, // only existed in 18
        // Filter out features that are not supported by the current LLVM version
        ("arm", "fp16") => Some(LLVMFeature::new("fullfp16")),