syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"xmm9:"}]}
source_snippet:         xmm9: xmm_reg = ["xmm9"] % x86_64_only,
context_before:         xmm8: xmm_reg = ["xmm8"] % x86_64_only,
context_after:         xmm10: xmm_reg = ["xmm10"] % x86_64_only,