{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"Hexagon(HexagonInlineAsmRegClass::preg)"}]}
            Hexagon(HexagonInlineAsmRegClass::preg) => unreachable!("clobber-only"),
            Hexagon(HexagonInlineAsmRegClass::reg) => "r",
            LoongArch(LoongArchInlineAsmRegClass::reg) => "r",