syntax_data: {"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"(\"widekl\","}]}
source_snippet:     ("widekl", Stable, &["kl"]),
context_before:     ("vpclmulqdq", Stable, &["avx", "pclmulqdq"]),
context_after:     ("x87", Unstable(sym::x87_target_feature), &[]),