{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"Arm(ArmInlineAsmRegClass::reg)"}]}
            Arm(ArmInlineAsmRegClass::reg) => "r",
            AArch64(AArch64InlineAsmRegClass::preg) => unreachable!("clobber-only"),
            Arm(ArmInlineAsmRegClass::sreg)