syntax_data: {"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"ymm7:"}]}
source_snippet:         ymm7: ymm_reg = ["ymm7"],
context_before:         ymm6: ymm_reg = ["ymm6"],
context_after:         ymm8: ymm_reg = ["ymm8"] % x86_64_only,