syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"\"a"}]}
source_snippet:         "a list of arguments to pass to LLVM (space separated)"),
context_before:     llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
context_after:     #[rustc_lint_opt_deny_field_access("use `Session::lto` instead of this field")]