syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"\"disable"}]}
source_snippet:         "disable LLVM's SLP vectorization pass"),
context_before:     no_vectorize_slp: bool = (false, parse_no_value, [TRACKED],
context_after:     opt_level: String = ("0".to_string(), parse_string, [TRACKED],