{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"(X86InlineAsmRegClass::ymm_reg,"}]}
            (X86InlineAsmRegClass::ymm_reg, None) => Some('t'),
            (X86InlineAsmRegClass::xmm_reg, None) => Some('x'),
            (X86InlineAsmRegClass::zmm_reg, None) => Some('g'),