syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"zmm29:"}]}
source_snippet:         zmm29: zmm_reg = ["zmm29", "xmm29", "ymm29"] % x86_64_only,
context_before:         zmm28: zmm_reg = ["zmm28", "xmm28", "ymm28"] % x86_64_only,
context_after:         zmm30: zmm_reg = ["zmm30", "xmm30", "ymm30"] % x86_64_only,